ngsolve_webgui.js

// JUPYTER_CODE_BEGIN
console.log("load ngsolve_webgui.js");
require.config({ paths: {
  THREE: "https://cdn.jsdelivr.net/npm/three@0.115.0/build/three.min",
  dat: "https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.js"
}});

require.undef('ngsolve_webgui');
console.log("define", define);
define('ngsolve_webgui', ["THREE","@jupyter-widgets/base"], function (THREE, widgets) {

/**
 * dat-gui JavaScript Controller Library
 * http://code.google.com/p/dat-gui
 *
 * Copyright 2011 Data Arts Team, Google Creative Lab
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 */

  let exports = {};
  console.log("build data module");
function exportDat(exports) {
function ___$insertStyle(css) {
  if (!css) {
    return;
  }
  if (typeof window === 'undefined') {
    return;
  }

  var style = document.createElement('style');

  style.setAttribute('type', 'text/css');
  style.innerHTML = css;
  document.head.appendChild(style);

  return css;
}

function colorToString (color, forceCSSHex) {
  var colorFormat = color.__state.conversionName.toString();
  var r = Math.round(color.r);
  var g = Math.round(color.g);
  var b = Math.round(color.b);
  var a = color.a;
  var h = Math.round(color.h);
  var s = color.s.toFixed(1);
  var v = color.v.toFixed(1);
  if (forceCSSHex || colorFormat === 'THREE_CHAR_HEX' || colorFormat === 'SIX_CHAR_HEX') {
    var str = color.hex.toString(16);
    while (str.length < 6) {
      str = '0' + str;
    }
    return '#' + str;
  } else if (colorFormat === 'CSS_RGB') {
    return 'rgb(' + r + ',' + g + ',' + b + ')';
  } else if (colorFormat === 'CSS_RGBA') {
    return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
  } else if (colorFormat === 'HEX') {
    return '0x' + color.hex.toString(16);
  } else if (colorFormat === 'RGB_ARRAY') {
    return '[' + r + ',' + g + ',' + b + ']';
  } else if (colorFormat === 'RGBA_ARRAY') {
    return '[' + r + ',' + g + ',' + b + ',' + a + ']';
  } else if (colorFormat === 'RGB_OBJ') {
    return '{r:' + r + ',g:' + g + ',b:' + b + '}';
  } else if (colorFormat === 'RGBA_OBJ') {
    return '{r:' + r + ',g:' + g + ',b:' + b + ',a:' + a + '}';
  } else if (colorFormat === 'HSV_OBJ') {
    return '{h:' + h + ',s:' + s + ',v:' + v + '}';
  } else if (colorFormat === 'HSVA_OBJ') {
    return '{h:' + h + ',s:' + s + ',v:' + v + ',a:' + a + '}';
  }
  return 'unknown format';
}

var ARR_EACH = Array.prototype.forEach;
var ARR_SLICE = Array.prototype.slice;
var Common = {
  BREAK: {},
  extend: function extend(target) {
    this.each(ARR_SLICE.call(arguments, 1), function (obj) {
      var keys = this.isObject(obj) ? Object.keys(obj) : [];
      keys.forEach(function (key) {
        if (!this.isUndefined(obj[key])) {
          target[key] = obj[key];
        }
      }.bind(this));
    }, this);
    return target;
  },
  defaults: function defaults(target) {
    this.each(ARR_SLICE.call(arguments, 1), function (obj) {
      var keys = this.isObject(obj) ? Object.keys(obj) : [];
      keys.forEach(function (key) {
        if (this.isUndefined(target[key])) {
          target[key] = obj[key];
        }
      }.bind(this));
    }, this);
    return target;
  },
  compose: function compose() {
    var toCall = ARR_SLICE.call(arguments);
    return function () {
      var args = ARR_SLICE.call(arguments);
      for (var i = toCall.length - 1; i >= 0; i--) {
        args = [toCall[i].apply(this, args)];
      }
      return args[0];
    };
  },
  each: function each(obj, itr, scope) {
    if (!obj) {
      return;
    }
    if (ARR_EACH && obj.forEach && obj.forEach === ARR_EACH) {
      obj.forEach(itr, scope);
    } else if (obj.length === obj.length + 0) {
      var key = void 0;
      var l = void 0;
      for (key = 0, l = obj.length; key < l; key++) {
        if (key in obj && itr.call(scope, obj[key], key) === this.BREAK) {
          return;
        }
      }
    } else {
      for (var _key in obj) {
        if (itr.call(scope, obj[_key], _key) === this.BREAK) {
          return;
        }
      }
    }
  },
  defer: function defer(fnc) {
    setTimeout(fnc, 0);
  },
  debounce: function debounce(func, threshold, callImmediately) {
    var timeout = void 0;
    return function () {
      var obj = this;
      var args = arguments;
      function delayed() {
        timeout = null;
        if (!callImmediately) func.apply(obj, args);
      }
      var callNow = callImmediately || !timeout;
      clearTimeout(timeout);
      timeout = setTimeout(delayed, threshold);
      if (callNow) {
        func.apply(obj, args);
      }
    };
  },
  toArray: function toArray(obj) {
    if (obj.toArray) return obj.toArray();
    return ARR_SLICE.call(obj);
  },
  isUndefined: function isUndefined(obj) {
    return obj === undefined;
  },
  isNull: function isNull(obj) {
    return obj === null;
  },
  isNaN: function (_isNaN) {
    function isNaN(_x) {
      return _isNaN.apply(this, arguments);
    }
    isNaN.toString = function () {
      return _isNaN.toString();
    };
    return isNaN;
  }(function (obj) {
    return isNaN(obj);
  }),
  isArray: Array.isArray || function (obj) {
    return obj.constructor === Array;
  },
  isObject: function isObject(obj) {
    return obj === Object(obj);
  },
  isNumber: function isNumber(obj) {
    return obj === obj + 0;
  },
  isString: function isString(obj) {
    return obj === obj + '';
  },
  isBoolean: function isBoolean(obj) {
    return obj === false || obj === true;
  },
  isFunction: function isFunction(obj) {
    return Object.prototype.toString.call(obj) === '[object Function]';
  }
};

var INTERPRETATIONS = [
{
  litmus: Common.isString,
  conversions: {
    THREE_CHAR_HEX: {
      read: function read(original) {
        var test = original.match(/^#([A-F0-9])([A-F0-9])([A-F0-9])$/i);
        if (test === null) {
          return false;
        }
        return {
          space: 'HEX',
          hex: parseInt('0x' + test[1].toString() + test[1].toString() + test[2].toString() + test[2].toString() + test[3].toString() + test[3].toString(), 0)
        };
      },
      write: colorToString
    },
    SIX_CHAR_HEX: {
      read: function read(original) {
        var test = original.match(/^#([A-F0-9]{6})$/i);
        if (test === null) {
          return false;
        }
        return {
          space: 'HEX',
          hex: parseInt('0x' + test[1].toString(), 0)
        };
      },
      write: colorToString
    },
    CSS_RGB: {
      read: function read(original) {
        var test = original.match(/^rgb\(\s*(.+)\s*,\s*(.+)\s*,\s*(.+)\s*\)/);
        if (test === null) {
          return false;
        }
        return {
          space: 'RGB',
          r: parseFloat(test[1]),
          g: parseFloat(test[2]),
          b: parseFloat(test[3])
        };
      },
      write: colorToString
    },
    CSS_RGBA: {
      read: function read(original) {
        var test = original.match(/^rgba\(\s*(.+)\s*,\s*(.+)\s*,\s*(.+)\s*,\s*(.+)\s*\)/);
        if (test === null) {
          return false;
        }
        return {
          space: 'RGB',
          r: parseFloat(test[1]),
          g: parseFloat(test[2]),
          b: parseFloat(test[3]),
          a: parseFloat(test[4])
        };
      },
      write: colorToString
    }
  }
},
{
  litmus: Common.isNumber,
  conversions: {
    HEX: {
      read: function read(original) {
        return {
          space: 'HEX',
          hex: original,
          conversionName: 'HEX'
        };
      },
      write: function write(color) {
        return color.hex;
      }
    }
  }
},
{
  litmus: Common.isArray,
  conversions: {
    RGB_ARRAY: {
      read: function read(original) {
        if (original.length !== 3) {
          return false;
        }
        return {
          space: 'RGB',
          r: original[0],
          g: original[1],
          b: original[2]
        };
      },
      write: function write(color) {
        return [color.r, color.g, color.b];
      }
    },
    RGBA_ARRAY: {
      read: function read(original) {
        if (original.length !== 4) return false;
        return {
          space: 'RGB',
          r: original[0],
          g: original[1],
          b: original[2],
          a: original[3]
        };
      },
      write: function write(color) {
        return [color.r, color.g, color.b, color.a];
      }
    }
  }
},
{
  litmus: Common.isObject,
  conversions: {
    RGBA_OBJ: {
      read: function read(original) {
        if (Common.isNumber(original.r) && Common.isNumber(original.g) && Common.isNumber(original.b) && Common.isNumber(original.a)) {
          return {
            space: 'RGB',
            r: original.r,
            g: original.g,
            b: original.b,
            a: original.a
          };
        }
        return false;
      },
      write: function write(color) {
        return {
          r: color.r,
          g: color.g,
          b: color.b,
          a: color.a
        };
      }
    },
    RGB_OBJ: {
      read: function read(original) {
        if (Common.isNumber(original.r) && Common.isNumber(original.g) && Common.isNumber(original.b)) {
          return {
            space: 'RGB',
            r: original.r,
            g: original.g,
            b: original.b
          };
        }
        return false;
      },
      write: function write(color) {
        return {
          r: color.r,
          g: color.g,
          b: color.b
        };
      }
    },
    HSVA_OBJ: {
      read: function read(original) {
        if (Common.isNumber(original.h) && Common.isNumber(original.s) && Common.isNumber(original.v) && Common.isNumber(original.a)) {
          return {
            space: 'HSV',
            h: original.h,
            s: original.s,
            v: original.v,
            a: original.a
          };
        }
        return false;
      },
      write: function write(color) {
        return {
          h: color.h,
          s: color.s,
          v: color.v,
          a: color.a
        };
      }
    },
    HSV_OBJ: {
      read: function read(original) {
        if (Common.isNumber(original.h) && Common.isNumber(original.s) && Common.isNumber(original.v)) {
          return {
            space: 'HSV',
            h: original.h,
            s: original.s,
            v: original.v
          };
        }
        return false;
      },
      write: function write(color) {
        return {
          h: color.h,
          s: color.s,
          v: color.v
        };
      }
    }
  }
}];
var result = void 0;
var toReturn = void 0;
var interpret = function interpret() {
  toReturn = false;
  var original = arguments.length > 1 ? Common.toArray(arguments) : arguments[0];
  Common.each(INTERPRETATIONS, function (family) {
    if (family.litmus(original)) {
      Common.each(family.conversions, function (conversion, conversionName) {
        result = conversion.read(original);
        if (toReturn === false && result !== false) {
          toReturn = result;
          result.conversionName = conversionName;
          result.conversion = conversion;
          return Common.BREAK;
        }
      });
      return Common.BREAK;
    }
  });
  return toReturn;
};

var tmpComponent = void 0;
var ColorMath = {
  hsv_to_rgb: function hsv_to_rgb(h, s, v) {
    var hi = Math.floor(h / 60) % 6;
    var f = h / 60 - Math.floor(h / 60);
    var p = v * (1.0 - s);
    var q = v * (1.0 - f * s);
    var t = v * (1.0 - (1.0 - f) * s);
    var c = [[v, t, p], [q, v, p], [p, v, t], [p, q, v], [t, p, v], [v, p, q]][hi];
    return {
      r: c[0] * 255,
      g: c[1] * 255,
      b: c[2] * 255
    };
  },
  rgb_to_hsv: function rgb_to_hsv(r, g, b) {
    var min = Math.min(r, g, b);
    var max = Math.max(r, g, b);
    var delta = max - min;
    var h = void 0;
    var s = void 0;
    if (max !== 0) {
      s = delta / max;
    } else {
      return {
        h: NaN,
        s: 0,
        v: 0
      };
    }
    if (r === max) {
      h = (g - b) / delta;
    } else if (g === max) {
      h = 2 + (b - r) / delta;
    } else {
      h = 4 + (r - g) / delta;
    }
    h /= 6;
    if (h < 0) {
      h += 1;
    }
    return {
      h: h * 360,
      s: s,
      v: max / 255
    };
  },
  rgb_to_hex: function rgb_to_hex(r, g, b) {
    var hex = this.hex_with_component(0, 2, r);
    hex = this.hex_with_component(hex, 1, g);
    hex = this.hex_with_component(hex, 0, b);
    return hex;
  },
  component_from_hex: function component_from_hex(hex, componentIndex) {
    return hex >> componentIndex * 8 & 0xFF;
  },
  hex_with_component: function hex_with_component(hex, componentIndex, value) {
    return value << (tmpComponent = componentIndex * 8) | hex & ~(0xFF << tmpComponent);
  }
};

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
  return typeof obj;
} : function (obj) {
  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};











var classCallCheck = function (instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
};

var createClass = function () {
  function defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  return function (Constructor, protoProps, staticProps) {
    if (protoProps) defineProperties(Constructor.prototype, protoProps);
    if (staticProps) defineProperties(Constructor, staticProps);
    return Constructor;
  };
}();







var get = function get(object, property, receiver) {
  if (object === null) object = Function.prototype;
  var desc = Object.getOwnPropertyDescriptor(object, property);

  if (desc === undefined) {
    var parent = Object.getPrototypeOf(object);

    if (parent === null) {
      return undefined;
    } else {
      return get(parent, property, receiver);
    }
  } else if ("value" in desc) {
    return desc.value;
  } else {
    var getter = desc.get;

    if (getter === undefined) {
      return undefined;
    }

    return getter.call(receiver);
  }
};

var inherits = function (subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
};











var possibleConstructorReturn = function (self, call) {
  if (!self) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return call && (typeof call === "object" || typeof call === "function") ? call : self;
};

var Color = function () {
  function Color() {
    classCallCheck(this, Color);
    this.__state = interpret.apply(this, arguments);
    if (this.__state === false) {
      throw new Error('Failed to interpret color arguments');
    }
    this.__state.a = this.__state.a || 1;
  }
  createClass(Color, [{
    key: 'toString',
    value: function toString() {
      return colorToString(this);
    }
  }, {
    key: 'toHexString',
    value: function toHexString() {
      return colorToString(this, true);
    }
  }, {
    key: 'toOriginal',
    value: function toOriginal() {
      return this.__state.conversion.write(this);
    }
  }]);
  return Color;
}();
function defineRGBComponent(target, component, componentHexIndex) {
  Object.defineProperty(target, component, {
    get: function get$$1() {
      if (this.__state.space === 'RGB') {
        return this.__state[component];
      }
      Color.recalculateRGB(this, component, componentHexIndex);
      return this.__state[component];
    },
    set: function set$$1(v) {
      if (this.__state.space !== 'RGB') {
        Color.recalculateRGB(this, component, componentHexIndex);
        this.__state.space = 'RGB';
      }
      this.__state[component] = v;
    }
  });
}
function defineHSVComponent(target, component) {
  Object.defineProperty(target, component, {
    get: function get$$1() {
      if (this.__state.space === 'HSV') {
        return this.__state[component];
      }
      Color.recalculateHSV(this);
      return this.__state[component];
    },
    set: function set$$1(v) {
      if (this.__state.space !== 'HSV') {
        Color.recalculateHSV(this);
        this.__state.space = 'HSV';
      }
      this.__state[component] = v;
    }
  });
}
Color.recalculateRGB = function (color, component, componentHexIndex) {
  if (color.__state.space === 'HEX') {
    color.__state[component] = ColorMath.component_from_hex(color.__state.hex, componentHexIndex);
  } else if (color.__state.space === 'HSV') {
    Common.extend(color.__state, ColorMath.hsv_to_rgb(color.__state.h, color.__state.s, color.__state.v));
  } else {
    throw new Error('Corrupted color state');
  }
};
Color.recalculateHSV = function (color) {
  var result = ColorMath.rgb_to_hsv(color.r, color.g, color.b);
  Common.extend(color.__state, {
    s: result.s,
    v: result.v
  });
  if (!Common.isNaN(result.h)) {
    color.__state.h = result.h;
  } else if (Common.isUndefined(color.__state.h)) {
    color.__state.h = 0;
  }
};
Color.COMPONENTS = ['r', 'g', 'b', 'h', 's', 'v', 'hex', 'a'];
defineRGBComponent(Color.prototype, 'r', 2);
defineRGBComponent(Color.prototype, 'g', 1);
defineRGBComponent(Color.prototype, 'b', 0);
defineHSVComponent(Color.prototype, 'h');
defineHSVComponent(Color.prototype, 's');
defineHSVComponent(Color.prototype, 'v');
Object.defineProperty(Color.prototype, 'a', {
  get: function get$$1() {
    return this.__state.a;
  },
  set: function set$$1(v) {
    this.__state.a = v;
  }
});
Object.defineProperty(Color.prototype, 'hex', {
  get: function get$$1() {
    if (!this.__state.space !== 'HEX') {
      this.__state.hex = ColorMath.rgb_to_hex(this.r, this.g, this.b);
    }
    return this.__state.hex;
  },
  set: function set$$1(v) {
    this.__state.space = 'HEX';
    this.__state.hex = v;
  }
});

var Controller = function () {
  function Controller(object, property) {
    classCallCheck(this, Controller);
    this.initialValue = object[property];
    this.domElement = document.createElement('div');
    this.object = object;
    this.property = property;
    this.__onChange = undefined;
    this.__onFinishChange = undefined;
  }
  createClass(Controller, [{
    key: 'onChange',
    value: function onChange(fnc) {
      this.__onChange = fnc;
      return this;
    }
  }, {
    key: 'onFinishChange',
    value: function onFinishChange(fnc) {
      this.__onFinishChange = fnc;
      return this;
    }
  }, {
    key: 'setValue',
    value: function setValue(newValue) {
      this.object[this.property] = newValue;
      if (this.__onChange) {
        this.__onChange.call(this, newValue);
      }
      this.updateDisplay();
      return this;
    }
  }, {
    key: 'getValue',
    value: function getValue() {
      return this.object[this.property];
    }
  }, {
    key: 'updateDisplay',
    value: function updateDisplay() {
      return this;
    }
  }, {
    key: 'isModified',
    value: function isModified() {
      return this.initialValue !== this.getValue();
    }
  }]);
  return Controller;
}();

var EVENT_MAP = {
  HTMLEvents: ['change'],
  MouseEvents: ['click', 'mousemove', 'mousedown', 'mouseup', 'mouseover'],
  KeyboardEvents: ['keydown']
};
var EVENT_MAP_INV = {};
Common.each(EVENT_MAP, function (v, k) {
  Common.each(v, function (e) {
    EVENT_MAP_INV[e] = k;
  });
});
var CSS_VALUE_PIXELS = /(\d+(\.\d+)?)px/;
function cssValueToPixels(val) {
  if (val === '0' || Common.isUndefined(val)) {
    return 0;
  }
  var match = val.match(CSS_VALUE_PIXELS);
  if (!Common.isNull(match)) {
    return parseFloat(match[1]);
  }
  return 0;
}
var dom = {
  makeSelectable: function makeSelectable(elem, selectable) {
    if (elem === undefined || elem.style === undefined) return;
    elem.onselectstart = selectable ? function () {
      return false;
    } : function () {};
    elem.style.MozUserSelect = selectable ? 'auto' : 'none';
    elem.style.KhtmlUserSelect = selectable ? 'auto' : 'none';
    elem.unselectable = selectable ? 'on' : 'off';
  },
  makeFullscreen: function makeFullscreen(elem, hor, vert) {
    var vertical = vert;
    var horizontal = hor;
    if (Common.isUndefined(horizontal)) {
      horizontal = true;
    }
    if (Common.isUndefined(vertical)) {
      vertical = true;
    }
    elem.style.position = 'absolute';
    if (horizontal) {
      elem.style.left = 0;
      elem.style.right = 0;
    }
    if (vertical) {
      elem.style.top = 0;
      elem.style.bottom = 0;
    }
  },
  fakeEvent: function fakeEvent(elem, eventType, pars, aux) {
    var params = pars || {};
    var className = EVENT_MAP_INV[eventType];
    if (!className) {
      throw new Error('Event type ' + eventType + ' not supported.');
    }
    var evt = document.createEvent(className);
    switch (className) {
      case 'MouseEvents':
        {
          var clientX = params.x || params.clientX || 0;
          var clientY = params.y || params.clientY || 0;
          evt.initMouseEvent(eventType, params.bubbles || false, params.cancelable || true, window, params.clickCount || 1, 0,
          0,
          clientX,
          clientY,
          false, false, false, false, 0, null);
          break;
        }
      case 'KeyboardEvents':
        {
          var init = evt.initKeyboardEvent || evt.initKeyEvent;
          Common.defaults(params, {
            cancelable: true,
            ctrlKey: false,
            altKey: false,
            shiftKey: false,
            metaKey: false,
            keyCode: undefined,
            charCode: undefined
          });
          init(eventType, params.bubbles || false, params.cancelable, window, params.ctrlKey, params.altKey, params.shiftKey, params.metaKey, params.keyCode, params.charCode);
          break;
        }
      default:
        {
          evt.initEvent(eventType, params.bubbles || false, params.cancelable || true);
          break;
        }
    }
    Common.defaults(evt, aux);
    elem.dispatchEvent(evt);
  },
  bind: function bind(elem, event, func, newBool) {
    var bool = newBool || false;
    if (elem.addEventListener) {
      elem.addEventListener(event, func, bool);
    } else if (elem.attachEvent) {
      elem.attachEvent('on' + event, func);
    }
    return dom;
  },
  unbind: function unbind(elem, event, func, newBool) {
    var bool = newBool || false;
    if (elem.removeEventListener) {
      elem.removeEventListener(event, func, bool);
    } else if (elem.detachEvent) {
      elem.detachEvent('on' + event, func);
    }
    return dom;
  },
  addClass: function addClass(elem, className) {
    if (elem.className === undefined) {
      elem.className = className;
    } else if (elem.className !== className) {
      var classes = elem.className.split(/ +/);
      if (classes.indexOf(className) === -1) {
        classes.push(className);
        elem.className = classes.join(' ').replace(/^\s+/, '').replace(/\s+$/, '');
      }
    }
    return dom;
  },
  removeClass: function removeClass(elem, className) {
    if (className) {
      if (elem.className === className) {
        elem.removeAttribute('class');
      } else {
        var classes = elem.className.split(/ +/);
        var index = classes.indexOf(className);
        if (index !== -1) {
          classes.splice(index, 1);
          elem.className = classes.join(' ');
        }
      }
    } else {
      elem.className = undefined;
    }
    return dom;
  },
  hasClass: function hasClass(elem, className) {
    return new RegExp('(?:^|\\s+)' + className + '(?:\\s+|$)').test(elem.className) || false;
  },
  getWidth: function getWidth(elem) {
    var style = getComputedStyle(elem);
    return cssValueToPixels(style['border-left-width']) + cssValueToPixels(style['border-right-width']) + cssValueToPixels(style['padding-left']) + cssValueToPixels(style['padding-right']) + cssValueToPixels(style.width);
  },
  getHeight: function getHeight(elem) {
    var style = getComputedStyle(elem);
    return cssValueToPixels(style['border-top-width']) + cssValueToPixels(style['border-bottom-width']) + cssValueToPixels(style['padding-top']) + cssValueToPixels(style['padding-bottom']) + cssValueToPixels(style.height);
  },
  getOffset: function getOffset(el) {
    var elem = el;
    var offset = { left: 0, top: 0 };
    if (elem.offsetParent) {
      do {
        offset.left += elem.offsetLeft;
        offset.top += elem.offsetTop;
        elem = elem.offsetParent;
      } while (elem);
    }
    return offset;
  },
  isActive: function isActive(elem) {
    return elem === document.activeElement && (elem.type || elem.href);
  }
};

var BooleanController = function (_Controller) {
  inherits(BooleanController, _Controller);
  function BooleanController(object, property) {
    classCallCheck(this, BooleanController);
    var _this2 = possibleConstructorReturn(this, (BooleanController.__proto__ || Object.getPrototypeOf(BooleanController)).call(this, object, property));
    var _this = _this2;
    _this2.__prev = _this2.getValue();
    _this2.__checkbox = document.createElement('input');
    _this2.__checkbox.setAttribute('type', 'checkbox');
    function onChange() {
      _this.setValue(!_this.__prev);
    }
    dom.bind(_this2.__checkbox, 'change', onChange, false);
    _this2.domElement.appendChild(_this2.__checkbox);
    _this2.updateDisplay();
    return _this2;
  }
  createClass(BooleanController, [{
    key: 'setValue',
    value: function setValue(v) {
      var toReturn = get(BooleanController.prototype.__proto__ || Object.getPrototypeOf(BooleanController.prototype), 'setValue', this).call(this, v);
      if (this.__onFinishChange) {
        this.__onFinishChange.call(this, this.getValue());
      }
      this.__prev = this.getValue();
      return toReturn;
    }
  }, {
    key: 'updateDisplay',
    value: function updateDisplay() {
      if (this.getValue() === true) {
        this.__checkbox.setAttribute('checked', 'checked');
        this.__checkbox.checked = true;
        this.__prev = true;
      } else {
        this.__checkbox.checked = false;
        this.__prev = false;
      }
      return get(BooleanController.prototype.__proto__ || Object.getPrototypeOf(BooleanController.prototype), 'updateDisplay', this).call(this);
    }
  }]);
  return BooleanController;
}(Controller);

var OptionController = function (_Controller) {
  inherits(OptionController, _Controller);
  function OptionController(object, property, opts) {
    classCallCheck(this, OptionController);
    var _this2 = possibleConstructorReturn(this, (OptionController.__proto__ || Object.getPrototypeOf(OptionController)).call(this, object, property));
    var options = opts;
    var _this = _this2;
    _this2.__select = document.createElement('select');
    if (Common.isArray(options)) {
      var map = {};
      Common.each(options, function (element) {
        map[element] = element;
      });
      options = map;
    }
    Common.each(options, function (value, key) {
      var opt = document.createElement('option');
      opt.innerHTML = key;
      opt.setAttribute('value', value);
      _this.__select.appendChild(opt);
    });
    _this2.updateDisplay();
    dom.bind(_this2.__select, 'change', function () {
      var desiredValue = this.options[this.selectedIndex].value;
      _this.setValue(desiredValue);
    });
    _this2.domElement.appendChild(_this2.__select);
    return _this2;
  }
  createClass(OptionController, [{
    key: 'setValue',
    value: function setValue(v) {
      var toReturn = get(OptionController.prototype.__proto__ || Object.getPrototypeOf(OptionController.prototype), 'setValue', this).call(this, v);
      if (this.__onFinishChange) {
        this.__onFinishChange.call(this, this.getValue());
      }
      return toReturn;
    }
  }, {
    key: 'updateDisplay',
    value: function updateDisplay() {
      if (dom.isActive(this.__select)) return this;
      this.__select.value = this.getValue();
      return get(OptionController.prototype.__proto__ || Object.getPrototypeOf(OptionController.prototype), 'updateDisplay', this).call(this);
    }
  }]);
  return OptionController;
}(Controller);

var StringController = function (_Controller) {
  inherits(StringController, _Controller);
  function StringController(object, property) {
    classCallCheck(this, StringController);
    var _this2 = possibleConstructorReturn(this, (StringController.__proto__ || Object.getPrototypeOf(StringController)).call(this, object, property));
    var _this = _this2;
    function onChange() {
      _this.setValue(_this.__input.value);
    }
    function onBlur() {
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }
    _this2.__input = document.createElement('input');
    _this2.__input.setAttribute('type', 'text');
    dom.bind(_this2.__input, 'keyup', onChange);
    dom.bind(_this2.__input, 'change', onChange);
    dom.bind(_this2.__input, 'blur', onBlur);
    dom.bind(_this2.__input, 'keydown', function (e) {
      if (e.keyCode === 13) {
        this.blur();
      }
    });
    _this2.updateDisplay();
    _this2.domElement.appendChild(_this2.__input);
    return _this2;
  }
  createClass(StringController, [{
    key: 'updateDisplay',
    value: function updateDisplay() {
      if (!dom.isActive(this.__input)) {
        this.__input.value = this.getValue();
      }
      return get(StringController.prototype.__proto__ || Object.getPrototypeOf(StringController.prototype), 'updateDisplay', this).call(this);
    }
  }]);
  return StringController;
}(Controller);

function numDecimals(x) {
  var _x = x.toString();
  if (_x.indexOf('.') > -1) {
    return _x.length - _x.indexOf('.') - 1;
  }
  return 0;
}
var NumberController = function (_Controller) {
  inherits(NumberController, _Controller);
  function NumberController(object, property, params) {
    classCallCheck(this, NumberController);
    var _this = possibleConstructorReturn(this, (NumberController.__proto__ || Object.getPrototypeOf(NumberController)).call(this, object, property));
    var _params = params || {};
    _this.__min = _params.min;
    _this.__max = _params.max;
    _this.__step = _params.step;
    if (Common.isUndefined(_this.__step)) {
      if (_this.initialValue === 0) {
        _this.__impliedStep = 1;
      } else {
        _this.__impliedStep = Math.pow(10, Math.floor(Math.log(Math.abs(_this.initialValue)) / Math.LN10)) / 10;
      }
    } else {
      _this.__impliedStep = _this.__step;
    }
    _this.__precision = numDecimals(_this.__impliedStep);
    return _this;
  }
  createClass(NumberController, [{
    key: 'setValue',
    value: function setValue(v) {
      var _v = v;
      if (this.__min !== undefined && _v < this.__min) {
        _v = this.__min;
      } else if (this.__max !== undefined && _v > this.__max) {
        _v = this.__max;
      }
      if (this.__step !== undefined && _v % this.__step !== 0) {
        _v = Math.round(_v / this.__step) * this.__step;
      }
      return get(NumberController.prototype.__proto__ || Object.getPrototypeOf(NumberController.prototype), 'setValue', this).call(this, _v);
    }
  }, {
    key: 'min',
    value: function min(minValue) {
      this.__min = minValue;
      return this;
    }
  }, {
    key: 'max',
    value: function max(maxValue) {
      this.__max = maxValue;
      return this;
    }
  }, {
    key: 'step',
    value: function step(stepValue) {
      this.__step = stepValue;
      this.__impliedStep = stepValue;
      this.__precision = numDecimals(stepValue);
      return this;
    }
  }]);
  return NumberController;
}(Controller);

function roundToDecimal(value, decimals) {
  var tenTo = Math.pow(10, decimals);
  return Math.round(value * tenTo) / tenTo;
}
var NumberControllerBox = function (_NumberController) {
  inherits(NumberControllerBox, _NumberController);
  function NumberControllerBox(object, property, params) {
    classCallCheck(this, NumberControllerBox);
    var _this2 = possibleConstructorReturn(this, (NumberControllerBox.__proto__ || Object.getPrototypeOf(NumberControllerBox)).call(this, object, property, params));
    _this2.__truncationSuspended = false;
    var _this = _this2;
    var prevY = void 0;
    function onChange() {
      var attempted = parseFloat(_this.__input.value);
      if (!Common.isNaN(attempted)) {
        _this.setValue(attempted);
      }
    }
    function onFinish() {
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }
    function onBlur() {
      onFinish();
    }
    function onMouseDrag(e) {
      var diff = prevY - e.clientY;
      _this.setValue(_this.getValue() + diff * _this.__impliedStep);
      prevY = e.clientY;
    }
    function onMouseUp() {
      dom.unbind(window, 'mousemove', onMouseDrag);
      dom.unbind(window, 'mouseup', onMouseUp);
      onFinish();
    }
    function onMouseDown(e) {
      dom.bind(window, 'mousemove', onMouseDrag);
      dom.bind(window, 'mouseup', onMouseUp);
      prevY = e.clientY;
    }
    _this2.__input = document.createElement('input');
    _this2.__input.setAttribute('type', 'text');
    dom.bind(_this2.__input, 'change', onChange);
    dom.bind(_this2.__input, 'blur', onBlur);
    dom.bind(_this2.__input, 'mousedown', onMouseDown);
    dom.bind(_this2.__input, 'keydown', function (e) {
      if (e.keyCode === 13) {
        _this.__truncationSuspended = true;
        this.blur();
        _this.__truncationSuspended = false;
        onFinish();
      }
    });
    _this2.updateDisplay();
    _this2.domElement.appendChild(_this2.__input);
    return _this2;
  }
  createClass(NumberControllerBox, [{
    key: 'updateDisplay',
    value: function updateDisplay() {
      this.__input.value = this.__truncationSuspended ? this.getValue() : roundToDecimal(this.getValue(), this.__precision);
      return get(NumberControllerBox.prototype.__proto__ || Object.getPrototypeOf(NumberControllerBox.prototype), 'updateDisplay', this).call(this);
    }
  }]);
  return NumberControllerBox;
}(NumberController);

function map(v, i1, i2, o1, o2) {
  return o1 + (o2 - o1) * ((v - i1) / (i2 - i1));
}
var NumberControllerSlider = function (_NumberController) {
  inherits(NumberControllerSlider, _NumberController);
  function NumberControllerSlider(object, property, min, max, step) {
    classCallCheck(this, NumberControllerSlider);
    var _this2 = possibleConstructorReturn(this, (NumberControllerSlider.__proto__ || Object.getPrototypeOf(NumberControllerSlider)).call(this, object, property, { min: min, max: max, step: step }));
    var _this = _this2;
    _this2.__background = document.createElement('div');
    _this2.__foreground = document.createElement('div');
    dom.bind(_this2.__background, 'mousedown', onMouseDown);
    dom.bind(_this2.__background, 'touchstart', onTouchStart);
    dom.addClass(_this2.__background, 'slider');
    dom.addClass(_this2.__foreground, 'slider-fg');
    function onMouseDown(e) {
      document.activeElement.blur();
      dom.bind(window, 'mousemove', onMouseDrag);
      dom.bind(window, 'mouseup', onMouseUp);
      onMouseDrag(e);
    }
    function onMouseDrag(e) {
      e.preventDefault();
      var bgRect = _this.__background.getBoundingClientRect();
      _this.setValue(map(e.clientX, bgRect.left, bgRect.right, _this.__min, _this.__max));
      return false;
    }
    function onMouseUp() {
      dom.unbind(window, 'mousemove', onMouseDrag);
      dom.unbind(window, 'mouseup', onMouseUp);
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }
    function onTouchStart(e) {
      if (e.touches.length !== 1) {
        return;
      }
      dom.bind(window, 'touchmove', onTouchMove);
      dom.bind(window, 'touchend', onTouchEnd);
      onTouchMove(e);
    }
    function onTouchMove(e) {
      var clientX = e.touches[0].clientX;
      var bgRect = _this.__background.getBoundingClientRect();
      _this.setValue(map(clientX, bgRect.left, bgRect.right, _this.__min, _this.__max));
    }
    function onTouchEnd() {
      dom.unbind(window, 'touchmove', onTouchMove);
      dom.unbind(window, 'touchend', onTouchEnd);
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }
    _this2.updateDisplay();
    _this2.__background.appendChild(_this2.__foreground);
    _this2.domElement.appendChild(_this2.__background);
    return _this2;
  }
  createClass(NumberControllerSlider, [{
    key: 'updateDisplay',
    value: function updateDisplay() {
      var pct = (this.getValue() - this.__min) / (this.__max - this.__min);
      this.__foreground.style.width = pct * 100 + '%';
      return get(NumberControllerSlider.prototype.__proto__ || Object.getPrototypeOf(NumberControllerSlider.prototype), 'updateDisplay', this).call(this);
    }
  }]);
  return NumberControllerSlider;
}(NumberController);

var FunctionController = function (_Controller) {
  inherits(FunctionController, _Controller);
  function FunctionController(object, property, text) {
    classCallCheck(this, FunctionController);
    var _this2 = possibleConstructorReturn(this, (FunctionController.__proto__ || Object.getPrototypeOf(FunctionController)).call(this, object, property));
    var _this = _this2;
    _this2.__button = document.createElement('div');
    _this2.__button.innerHTML = text === undefined ? 'Fire' : text;
    dom.bind(_this2.__button, 'click', function (e) {
      e.preventDefault();
      _this.fire();
      return false;
    });
    dom.addClass(_this2.__button, 'button');
    _this2.domElement.appendChild(_this2.__button);
    return _this2;
  }
  createClass(FunctionController, [{
    key: 'fire',
    value: function fire() {
      if (this.__onChange) {
        this.__onChange.call(this);
      }
      this.getValue().call(this.object);
      if (this.__onFinishChange) {
        this.__onFinishChange.call(this, this.getValue());
      }
    }
  }]);
  return FunctionController;
}(Controller);

var ColorController = function (_Controller) {
  inherits(ColorController, _Controller);
  function ColorController(object, property) {
    classCallCheck(this, ColorController);
    var _this2 = possibleConstructorReturn(this, (ColorController.__proto__ || Object.getPrototypeOf(ColorController)).call(this, object, property));
    _this2.__color = new Color(_this2.getValue());
    _this2.__temp = new Color(0);
    var _this = _this2;
    _this2.domElement = document.createElement('div');
    dom.makeSelectable(_this2.domElement, false);
    _this2.__selector = document.createElement('div');
    _this2.__selector.className = 'selector';
    _this2.__saturation_field = document.createElement('div');
    _this2.__saturation_field.className = 'saturation-field';
    _this2.__field_knob = document.createElement('div');
    _this2.__field_knob.className = 'field-knob';
    _this2.__field_knob_border = '2px solid ';
    _this2.__hue_knob = document.createElement('div');
    _this2.__hue_knob.className = 'hue-knob';
    _this2.__hue_field = document.createElement('div');
    _this2.__hue_field.className = 'hue-field';
    _this2.__input = document.createElement('input');
    _this2.__input.type = 'text';
    _this2.__input_textShadow = '0 1px 1px ';
    dom.bind(_this2.__input, 'keydown', function (e) {
      if (e.keyCode === 13) {
        onBlur.call(this);
      }
    });
    dom.bind(_this2.__input, 'blur', onBlur);
    dom.bind(_this2.__selector, 'mousedown', function ()        {
      dom.addClass(this, 'drag').bind(window, 'mouseup', function ()        {
        dom.removeClass(_this.__selector, 'drag');
      });
    });
    dom.bind(_this2.__selector, 'touchstart', function ()        {
      dom.addClass(this, 'drag').bind(window, 'touchend', function ()        {
        dom.removeClass(_this.__selector, 'drag');
      });
    });
    var valueField = document.createElement('div');
    Common.extend(_this2.__selector.style, {
      width: '122px',
      height: '102px',
      padding: '3px',
      backgroundColor: '#222',
      boxShadow: '0px 1px 3px rgba(0,0,0,0.3)'
    });
    Common.extend(_this2.__field_knob.style, {
      position: 'absolute',
      width: '12px',
      height: '12px',
      border: _this2.__field_knob_border + (_this2.__color.v < 0.5 ? '#fff' : '#000'),
      boxShadow: '0px 1px 3px rgba(0,0,0,0.5)',
      borderRadius: '12px',
      zIndex: 1
    });
    Common.extend(_this2.__hue_knob.style, {
      position: 'absolute',
      width: '15px',
      height: '2px',
      borderRight: '4px solid #fff',
      zIndex: 1
    });
    Common.extend(_this2.__saturation_field.style, {
      width: '100px',
      height: '100px',
      border: '1px solid #555',
      marginRight: '3px',
      display: 'inline-block',
      cursor: 'pointer'
    });
    Common.extend(valueField.style, {
      width: '100%',
      height: '100%',
      background: 'none'
    });
    linearGradient(valueField, 'top', 'rgba(0,0,0,0)', '#000');
    Common.extend(_this2.__hue_field.style, {
      width: '15px',
      height: '100px',
      border: '1px solid #555',
      cursor: 'ns-resize',
      position: 'absolute',
      top: '3px',
      right: '3px'
    });
    hueGradient(_this2.__hue_field);
    Common.extend(_this2.__input.style, {
      outline: 'none',
      textAlign: 'center',
      color: '#fff',
      border: 0,
      fontWeight: 'bold',
      textShadow: _this2.__input_textShadow + 'rgba(0,0,0,0.7)'
    });
    dom.bind(_this2.__saturation_field, 'mousedown', fieldDown);
    dom.bind(_this2.__saturation_field, 'touchstart', fieldDown);
    dom.bind(_this2.__field_knob, 'mousedown', fieldDown);
    dom.bind(_this2.__field_knob, 'touchstart', fieldDown);
    dom.bind(_this2.__hue_field, 'mousedown', fieldDownH);
    dom.bind(_this2.__hue_field, 'touchstart', fieldDownH);
    function fieldDown(e) {
      setSV(e);
      dom.bind(window, 'mousemove', setSV);
      dom.bind(window, 'touchmove', setSV);
      dom.bind(window, 'mouseup', fieldUpSV);
      dom.bind(window, 'touchend', fieldUpSV);
    }
    function fieldDownH(e) {
      setH(e);
      dom.bind(window, 'mousemove', setH);
      dom.bind(window, 'touchmove', setH);
      dom.bind(window, 'mouseup', fieldUpH);
      dom.bind(window, 'touchend', fieldUpH);
    }
    function fieldUpSV() {
      dom.unbind(window, 'mousemove', setSV);
      dom.unbind(window, 'touchmove', setSV);
      dom.unbind(window, 'mouseup', fieldUpSV);
      dom.unbind(window, 'touchend', fieldUpSV);
      onFinish();
    }
    function fieldUpH() {
      dom.unbind(window, 'mousemove', setH);
      dom.unbind(window, 'touchmove', setH);
      dom.unbind(window, 'mouseup', fieldUpH);
      dom.unbind(window, 'touchend', fieldUpH);
      onFinish();
    }
    function onBlur() {
      var i = interpret(this.value);
      if (i !== false) {
        _this.__color.__state = i;
        _this.setValue(_this.__color.toOriginal());
      } else {
        this.value = _this.__color.toString();
      }
    }
    function onFinish() {
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.__color.toOriginal());
      }
    }
    _this2.__saturation_field.appendChild(valueField);
    _this2.__selector.appendChild(_this2.__field_knob);
    _this2.__selector.appendChild(_this2.__saturation_field);
    _this2.__selector.appendChild(_this2.__hue_field);
    _this2.__hue_field.appendChild(_this2.__hue_knob);
    _this2.domElement.appendChild(_this2.__input);
    _this2.domElement.appendChild(_this2.__selector);
    _this2.updateDisplay();
    function setSV(e) {
      if (e.type.indexOf('touch') === -1) {
        e.preventDefault();
      }
      var fieldRect = _this.__saturation_field.getBoundingClientRect();
      var _ref = e.touches && e.touches[0] || e,
          clientX = _ref.clientX,
          clientY = _ref.clientY;
      var s = (clientX - fieldRect.left) / (fieldRect.right - fieldRect.left);
      var v = 1 - (clientY - fieldRect.top) / (fieldRect.bottom - fieldRect.top);
      if (v > 1) {
        v = 1;
      } else if (v < 0) {
        v = 0;
      }
      if (s > 1) {
        s = 1;
      } else if (s < 0) {
        s = 0;
      }
      _this.__color.v = v;
      _this.__color.s = s;
      _this.setValue(_this.__color.toOriginal());
      return false;
    }
    function setH(e) {
      if (e.type.indexOf('touch') === -1) {
        e.preventDefault();
      }
      var fieldRect = _this.__hue_field.getBoundingClientRect();
      var _ref2 = e.touches && e.touches[0] || e,
          clientY = _ref2.clientY;
      var h = 1 - (clientY - fieldRect.top) / (fieldRect.bottom - fieldRect.top);
      if (h > 1) {
        h = 1;
      } else if (h < 0) {
        h = 0;
      }
      _this.__color.h = h * 360;
      _this.setValue(_this.__color.toOriginal());
      return false;
    }
    return _this2;
  }
  createClass(ColorController, [{
    key: 'updateDisplay',
    value: function updateDisplay() {
      var i = interpret(this.getValue());
      if (i !== false) {
        var mismatch = false;
        Common.each(Color.COMPONENTS, function (component) {
          if (!Common.isUndefined(i[component]) && !Common.isUndefined(this.__color.__state[component]) && i[component] !== this.__color.__state[component]) {
            mismatch = true;
            return {};
          }
        }, this);
        if (mismatch) {
          Common.extend(this.__color.__state, i);
        }
      }
      Common.extend(this.__temp.__state, this.__color.__state);
      this.__temp.a = 1;
      var flip = this.__color.v < 0.5 || this.__color.s > 0.5 ? 255 : 0;
      var _flip = 255 - flip;
      Common.extend(this.__field_knob.style, {
        marginLeft: 100 * this.__color.s - 7 + 'px',
        marginTop: 100 * (1 - this.__color.v) - 7 + 'px',
        backgroundColor: this.__temp.toHexString(),
        border: this.__field_knob_border + 'rgb(' + flip + ',' + flip + ',' + flip + ')'
      });
      this.__hue_knob.style.marginTop = (1 - this.__color.h / 360) * 100 + 'px';
      this.__temp.s = 1;
      this.__temp.v = 1;
      linearGradient(this.__saturation_field, 'left', '#fff', this.__temp.toHexString());
      this.__input.value = this.__color.toString();
      Common.extend(this.__input.style, {
        backgroundColor: this.__color.toHexString(),
        color: 'rgb(' + flip + ',' + flip + ',' + flip + ')',
        textShadow: this.__input_textShadow + 'rgba(' + _flip + ',' + _flip + ',' + _flip + ',.7)'
      });
    }
  }]);
  return ColorController;
}(Controller);
var vendors = ['-moz-', '-o-', '-webkit-', '-ms-', ''];
function linearGradient(elem, x, a, b) {
  elem.style.background = '';
  Common.each(vendors, function (vendor) {
    elem.style.cssText += 'background: ' + vendor + 'linear-gradient(' + x + ', ' + a + ' 0%, ' + b + ' 100%); ';
  });
}
function hueGradient(elem) {
  elem.style.background = '';
  elem.style.cssText += 'background: -moz-linear-gradient(top,  #ff0000 0%, #ff00ff 17%, #0000ff 34%, #00ffff 50%, #00ff00 67%, #ffff00 84%, #ff0000 100%);';
  elem.style.cssText += 'background: -webkit-linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);';
  elem.style.cssText += 'background: -o-linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);';
  elem.style.cssText += 'background: -ms-linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);';
  elem.style.cssText += 'background: linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);';
}

var css = {
  load: function load(url, indoc) {
    var doc = indoc || document;
    var link = doc.createElement('link');
    link.type = 'text/css';
    link.rel = 'stylesheet';
    link.href = url;
    doc.getElementsByTagName('head')[0].appendChild(link);
  },
  inject: function inject(cssContent, indoc) {
    var doc = indoc || document;
    var injected = document.createElement('style');
    injected.type = 'text/css';
    injected.innerHTML = cssContent;
    var head = doc.getElementsByTagName('head')[0];
    try {
      head.appendChild(injected);
    } catch (e) {
    }
  }
};

var saveDialogContents = String.raw`<div id=\"dg-save\" class=\"dg dialogue\">\n\n  Here's the new load parameter for your <code>GUI</code>'s constructor:\n\n  <textarea id=\"dg-new-constructor\"></textarea>\n\n  <div id=\"dg-save-locally\">\n\n    <input id=\"dg-local-storage\" type=\"checkbox\"/> Automatically save\n    values to <code>localStorage</code> on exit.\n\n    <div id=\"dg-local-explain\">The values saved to <code>localStorage</code> will\n      override those passed to <code>dat.GUI</code>'s constructor. This makes it\n      easier to work incrementally, but <code>localStorage</code> is fragile,\n      and your friends may not see the same values you do.\n\n    </div>\n\n  </div>\n\n</div>`;

var ControllerFactory = function ControllerFactory(object, property) {
  var initialValue = object[property];
  if (Common.isArray(arguments[2]) || Common.isObject(arguments[2])) {
    return new OptionController(object, property, arguments[2]);
  }
  if (Common.isNumber(initialValue)) {
    if (Common.isNumber(arguments[2]) && Common.isNumber(arguments[3])) {
      if (Common.isNumber(arguments[4])) {
        return new NumberControllerSlider(object, property, arguments[2], arguments[3], arguments[4]);
      }
      return new NumberControllerSlider(object, property, arguments[2], arguments[3]);
    }
    if (Common.isNumber(arguments[4])) {
      return new NumberControllerBox(object, property, { min: arguments[2], max: arguments[3], step: arguments[4] });
    }
    return new NumberControllerBox(object, property, { min: arguments[2], max: arguments[3] });
  }
  if (Common.isString(initialValue)) {
    return new StringController(object, property);
  }
  if (Common.isFunction(initialValue)) {
    return new FunctionController(object, property, '');
  }
  if (Common.isBoolean(initialValue)) {
    return new BooleanController(object, property);
  }
  return null;
};

function requestAnimationFrame(callback) {
  setTimeout(callback, 1000 / 60);
}
var requestAnimationFrame$1 = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || requestAnimationFrame;

var CenteredDiv = function () {
  function CenteredDiv() {
    classCallCheck(this, CenteredDiv);
    this.backgroundElement = document.createElement('div');
    Common.extend(this.backgroundElement.style, {
      backgroundColor: 'rgba(0,0,0,0.8)',
      top: 0,
      left: 0,
      display: 'none',
      zIndex: '1000',
      opacity: 0,
      WebkitTransition: 'opacity 0.2s linear',
      transition: 'opacity 0.2s linear'
    });
    dom.makeFullscreen(this.backgroundElement);
    this.backgroundElement.style.position = 'fixed';
    this.domElement = document.createElement('div');
    Common.extend(this.domElement.style, {
      position: 'fixed',
      display: 'none',
      zIndex: '1001',
      opacity: 0,
      WebkitTransition: '-webkit-transform 0.2s ease-out, opacity 0.2s linear',
      transition: 'transform 0.2s ease-out, opacity 0.2s linear'
    });
    document.body.appendChild(this.backgroundElement);
    document.body.appendChild(this.domElement);
    var _this = this;
    dom.bind(this.backgroundElement, 'click', function () {
      _this.hide();
    });
  }
  createClass(CenteredDiv, [{
    key: 'show',
    value: function show() {
      var _this = this;
      this.backgroundElement.style.display = 'block';
      this.domElement.style.display = 'block';
      this.domElement.style.opacity = 0;
      this.domElement.style.webkitTransform = 'scale(1.1)';
      this.layout();
      Common.defer(function () {
        _this.backgroundElement.style.opacity = 1;
        _this.domElement.style.opacity = 1;
        _this.domElement.style.webkitTransform = 'scale(1)';
      });
    }
  }, {
    key: 'hide',
    value: function hide() {
      var _this = this;
      var hide = function hide() {
        _this.domElement.style.display = 'none';
        _this.backgroundElement.style.display = 'none';
        dom.unbind(_this.domElement, 'webkitTransitionEnd', hide);
        dom.unbind(_this.domElement, 'transitionend', hide);
        dom.unbind(_this.domElement, 'oTransitionEnd', hide);
      };
      dom.bind(this.domElement, 'webkitTransitionEnd', hide);
      dom.bind(this.domElement, 'transitionend', hide);
      dom.bind(this.domElement, 'oTransitionEnd', hide);
      this.backgroundElement.style.opacity = 0;
      this.domElement.style.opacity = 0;
      this.domElement.style.webkitTransform = 'scale(1.1)';
    }
  }, {
    key: 'layout',
    value: function layout() {
      this.domElement.style.left = window.innerWidth / 2 - dom.getWidth(this.domElement) / 2 + 'px';
      this.domElement.style.top = window.innerHeight / 2 - dom.getHeight(this.domElement) / 2 + 'px';
    }
  }]);
  return CenteredDiv;
}();

var styleSheet = ___$insertStyle(".dg ul{list-style:none;margin:0;padding:0;width:100%;clear:both}.dg.ac{position:fixed;top:0;left:0;right:0;height:0;z-index:0}.dg:not(.ac) .main{overflow:hidden}.dg.main{-webkit-transition:opacity .1s linear;-o-transition:opacity .1s linear;-moz-transition:opacity .1s linear;transition:opacity .1s linear}.dg.main.taller-than-window{overflow-y:auto}.dg.main.taller-than-window .close-button{opacity:1;margin-top:-1px;border-top:1px solid #2c2c2c}.dg.main ul.closed .close-button{opacity:1 !important}.dg.main:hover .close-button,.dg.main .close-button.drag{opacity:1}.dg.main .close-button{-webkit-transition:opacity .1s linear;-o-transition:opacity .1s linear;-moz-transition:opacity .1s linear;transition:opacity .1s linear;border:0;line-height:19px;height:20px;cursor:pointer;text-align:center;background-color:#000}.dg.main .close-button.close-top{position:relative}.dg.main .close-button.close-bottom{position:absolute}.dg.main .close-button:hover{background-color:#111}.dg.a{float:right;margin-right:15px;overflow-y:visible}.dg.a.has-save>ul.close-top{margin-top:0}.dg.a.has-save>ul.close-bottom{margin-top:27px}.dg.a.has-save>ul.closed{margin-top:0}.dg.a .save-row{top:0;z-index:1002}.dg.a .save-row.close-top{position:relative}.dg.a .save-row.close-bottom{position:fixed}.dg li{-webkit-transition:height .1s ease-out;-o-transition:height .1s ease-out;-moz-transition:height .1s ease-out;transition:height .1s ease-out;-webkit-transition:overflow .1s linear;-o-transition:overflow .1s linear;-moz-transition:overflow .1s linear;transition:overflow .1s linear}.dg li:not(.folder){cursor:auto;height:27px;line-height:27px;padding:0 4px 0 5px}.dg li.folder{padding:0;border-left:4px solid rgba(0,0,0,0)}.dg li.title{cursor:pointer;margin-left:-4px}.dg .closed li:not(.title),.dg .closed ul li,.dg .closed ul li>*{height:0;overflow:hidden;border:0}.dg .cr{clear:both;padding-left:3px;height:27px;overflow:hidden}.dg .property-name{cursor:default;float:left;clear:left;width:40%;overflow:hidden;text-overflow:ellipsis}.dg .c{float:left;width:60%;position:relative}.dg .c input[type=text]{border:0;margin-top:4px;padding:3px;width:100%;float:right}.dg .has-slider input[type=text]{width:30%;margin-left:0}.dg .slider{float:left;width:66%;margin-left:-5px;margin-right:0;height:19px;margin-top:4px}.dg .slider-fg{height:100%}.dg .c input[type=checkbox]{margin-top:7px}.dg .c select{margin-top:5px}.dg .cr.function,.dg .cr.function .property-name,.dg .cr.function *,.dg .cr.boolean,.dg .cr.boolean *{cursor:pointer}.dg .cr.color{overflow:visible}.dg .selector{display:none;position:absolute;margin-left:-9px;margin-top:23px;z-index:10}.dg .c:hover .selector,.dg .selector.drag{display:block}.dg li.save-row{padding:0}.dg li.save-row .button{display:inline-block;padding:0px 6px}.dg.dialogue{background-color:#222;width:460px;padding:15px;font-size:13px;line-height:15px}#dg-new-constructor{padding:10px;color:#222;font-family:Monaco, monospace;font-size:10px;border:0;resize:none;box-shadow:inset 1px 1px 1px #888;word-wrap:break-word;margin:12px 0;display:block;width:440px;overflow-y:scroll;height:100px;position:relative}#dg-local-explain{display:none;font-size:11px;line-height:17px;border-radius:3px;background-color:#333;padding:8px;margin-top:10px}#dg-local-explain code{font-size:10px}#dat-gui-save-locally{display:none}.dg{color:#eee;font:11px 'Lucida Grande', sans-serif;text-shadow:0 -1px 0 #111}.dg.main::-webkit-scrollbar{width:5px;background:#1a1a1a}.dg.main::-webkit-scrollbar-corner{height:0;display:none}.dg.main::-webkit-scrollbar-thumb{border-radius:5px;background:#676767}.dg li:not(.folder){background:#1a1a1a;border-bottom:1px solid #2c2c2c}.dg li.save-row{line-height:25px;background:#dad5cb;border:0}.dg li.save-row select{margin-left:5px;width:108px}.dg li.save-row .button{margin-left:5px;margin-top:1px;border-radius:2px;font-size:9px;line-height:7px;padding:4px 4px 5px 4px;background:#c5bdad;color:#fff;text-shadow:0 1px 0 #b0a58f;box-shadow:0 -1px 0 #b0a58f;cursor:pointer}.dg li.save-row .button.gears{background:#c5bdad url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAANCAYAAAB/9ZQ7AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAQJJREFUeNpiYKAU/P//PwGIC/ApCABiBSAW+I8AClAcgKxQ4T9hoMAEUrxx2QSGN6+egDX+/vWT4e7N82AMYoPAx/evwWoYoSYbACX2s7KxCxzcsezDh3evFoDEBYTEEqycggWAzA9AuUSQQgeYPa9fPv6/YWm/Acx5IPb7ty/fw+QZblw67vDs8R0YHyQhgObx+yAJkBqmG5dPPDh1aPOGR/eugW0G4vlIoTIfyFcA+QekhhHJhPdQxbiAIguMBTQZrPD7108M6roWYDFQiIAAv6Aow/1bFwXgis+f2LUAynwoIaNcz8XNx3Dl7MEJUDGQpx9gtQ8YCueB+D26OECAAQDadt7e46D42QAAAABJRU5ErkJggg==) 2px 1px no-repeat;height:7px;width:8px}.dg li.save-row .button:hover{background-color:#bab19e;box-shadow:0 -1px 0 #b0a58f}.dg li.folder{border-bottom:0}.dg li.title{padding-left:16px;background:#000 url(data:image/gif;base64,R0lGODlhBQAFAJEAAP////Pz8////////yH5BAEAAAIALAAAAAAFAAUAAAIIlI+hKgFxoCgAOw==) 6px 10px no-repeat;cursor:pointer;border-bottom:1px solid rgba(255,255,255,0.2)}.dg .closed li.title{background-image:url(data:image/gif;base64,R0lGODlhBQAFAJEAAP////Pz8////////yH5BAEAAAIALAAAAAAFAAUAAAIIlGIWqMCbWAEAOw==)}.dg .cr.boolean{border-left:3px solid #806787}.dg .cr.color{border-left:3px solid}.dg .cr.function{border-left:3px solid #e61d5f}.dg .cr.number{border-left:3px solid #2FA1D6}.dg .cr.number input[type=text]{color:#2FA1D6}.dg .cr.string{border-left:3px solid #1ed36f}.dg .cr.string input[type=text]{color:#1ed36f}.dg .cr.function:hover,.dg .cr.boolean:hover{background:#111}.dg .c input[type=text]{background:#303030;outline:none}.dg .c input[type=text]:hover{background:#3c3c3c}.dg .c input[type=text]:focus{background:#494949;color:#fff}.dg .c .slider{background:#303030;cursor:ew-resize}.dg .c .slider-fg{background:#2FA1D6;max-width:100%}.dg .c .slider:hover{background:#3c3c3c}.dg .c .slider:hover .slider-fg{background:#44abda}");

css.inject(styleSheet);
var CSS_NAMESPACE = 'dg';
var HIDE_KEY_CODE = 72;
var CLOSE_BUTTON_HEIGHT = 20;
var DEFAULT_DEFAULT_PRESET_NAME = 'Default';
var SUPPORTS_LOCAL_STORAGE = function () {
  try {
    return !!window.localStorage;
  } catch (e) {
    return false;
  }
}();
var SAVE_DIALOGUE = void 0;
var autoPlaceVirgin = true;
var autoPlaceContainer = void 0;
var hide = false;
var hideableGuis = [];
var GUI = function GUI(pars) {
  var _this = this;
  var params = pars || {};
  this.domElement = document.createElement('div');
  this.__ul = document.createElement('ul');
  this.domElement.appendChild(this.__ul);
  dom.addClass(this.domElement, CSS_NAMESPACE);
  this.__folders = {};
  this.__controllers = [];
  this.__rememberedObjects = [];
  this.__rememberedObjectIndecesToControllers = [];
  this.__listening = [];
  params = Common.defaults(params, {
    closeOnTop: false,
    autoPlace: true,
    width: GUI.DEFAULT_WIDTH
  });
  params = Common.defaults(params, {
    resizable: params.autoPlace,
    hideable: params.autoPlace
  });
  if (!Common.isUndefined(params.load)) {
    if (params.preset) {
      params.load.preset = params.preset;
    }
  } else {
    params.load = { preset: DEFAULT_DEFAULT_PRESET_NAME };
  }
  if (Common.isUndefined(params.parent) && params.hideable) {
    hideableGuis.push(this);
  }
  params.resizable = Common.isUndefined(params.parent) && params.resizable;
  if (params.autoPlace && Common.isUndefined(params.scrollable)) {
    params.scrollable = true;
  }
  var useLocalStorage = SUPPORTS_LOCAL_STORAGE && localStorage.getItem(getLocalStorageHash(this, 'isLocal')) === 'true';
  var saveToLocalStorage = void 0;
  var titleRow = void 0;
  Object.defineProperties(this,
  {
    parent: {
      get: function get$$1() {
        return params.parent;
      }
    },
    scrollable: {
      get: function get$$1() {
        return params.scrollable;
      }
    },
    autoPlace: {
      get: function get$$1() {
        return params.autoPlace;
      }
    },
    closeOnTop: {
      get: function get$$1() {
        return params.closeOnTop;
      }
    },
    preset: {
      get: function get$$1() {
        if (_this.parent) {
          return _this.getRoot().preset;
        }
        return params.load.preset;
      },
      set: function set$$1(v) {
        if (_this.parent) {
          _this.getRoot().preset = v;
        } else {
          params.load.preset = v;
        }
        setPresetSelectIndex(this);
        _this.revert();
      }
    },
    width: {
      get: function get$$1() {
        return params.width;
      },
      set: function set$$1(v) {
        params.width = v;
        setWidth(_this, v);
      }
    },
    name: {
      get: function get$$1() {
        return params.name;
      },
      set: function set$$1(v) {
        params.name = v;
        if (titleRow) {
          titleRow.innerHTML = params.name;
        }
      }
    },
    closed: {
      get: function get$$1() {
        return params.closed;
      },
      set: function set$$1(v) {
        params.closed = v;
        if (params.closed) {
          dom.addClass(_this.__ul, GUI.CLASS_CLOSED);
        } else {
          dom.removeClass(_this.__ul, GUI.CLASS_CLOSED);
        }
        this.onResize();
        if (_this.__closeButton) {
          _this.__closeButton.innerHTML = v ? GUI.TEXT_OPEN : GUI.TEXT_CLOSED;
        }
      }
    },
    load: {
      get: function get$$1() {
        return params.load;
      }
    },
    useLocalStorage: {
      get: function get$$1() {
        return useLocalStorage;
      },
      set: function set$$1(bool) {
        if (SUPPORTS_LOCAL_STORAGE) {
          useLocalStorage = bool;
          if (bool) {
            dom.bind(window, 'unload', saveToLocalStorage);
          } else {
            dom.unbind(window, 'unload', saveToLocalStorage);
          }
          localStorage.setItem(getLocalStorageHash(_this, 'isLocal'), bool);
        }
      }
    }
  });
  if (Common.isUndefined(params.parent)) {
    this.closed = params.closed || false;
    dom.addClass(this.domElement, GUI.CLASS_MAIN);
    dom.makeSelectable(this.domElement, false);
    if (SUPPORTS_LOCAL_STORAGE) {
      if (useLocalStorage) {
        _this.useLocalStorage = true;
        var savedGui = localStorage.getItem(getLocalStorageHash(this, 'gui'));
        if (savedGui) {
          params.load = JSON.parse(savedGui);
        }
      }
    }
    this.__closeButton = document.createElement('div');
    this.__closeButton.innerHTML = GUI.TEXT_CLOSED;
    dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_BUTTON);
    if (params.closeOnTop) {
      dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_TOP);
      this.domElement.insertBefore(this.__closeButton, this.domElement.childNodes[0]);
    } else {
      dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_BOTTOM);
      this.domElement.appendChild(this.__closeButton);
    }
    dom.bind(this.__closeButton, 'click', function () {
      _this.closed = !_this.closed;
    });
  } else {
    if (params.closed === undefined) {
      params.closed = true;
    }
    var titleRowName = document.createTextNode(params.name);
    dom.addClass(titleRowName, 'controller-name');
    titleRow = addRow(_this, titleRowName);
    var onClickTitle = function onClickTitle(e) {
      e.preventDefault();
      _this.closed = !_this.closed;
      return false;
    };
    dom.addClass(this.__ul, GUI.CLASS_CLOSED);
    dom.addClass(titleRow, 'title');
    dom.bind(titleRow, 'click', onClickTitle);
    if (!params.closed) {
      this.closed = false;
    }
  }
  if (params.autoPlace) {
    if (Common.isUndefined(params.parent)) {
      if (autoPlaceVirgin) {
        autoPlaceContainer = document.createElement('div');
        dom.addClass(autoPlaceContainer, CSS_NAMESPACE);
        dom.addClass(autoPlaceContainer, GUI.CLASS_AUTO_PLACE_CONTAINER);
        document.body.appendChild(autoPlaceContainer);
        autoPlaceVirgin = false;
      }
      autoPlaceContainer.appendChild(this.domElement);
      dom.addClass(this.domElement, GUI.CLASS_AUTO_PLACE);
    }
    if (!this.parent) {
      setWidth(_this, params.width);
    }
  }
  this.__resizeHandler = function () {
    _this.onResizeDebounced();
  };
  dom.bind(window, 'resize', this.__resizeHandler);
  dom.bind(this.__ul, 'webkitTransitionEnd', this.__resizeHandler);
  dom.bind(this.__ul, 'transitionend', this.__resizeHandler);
  dom.bind(this.__ul, 'oTransitionEnd', this.__resizeHandler);
  this.onResize();
  if (params.resizable) {
    addResizeHandle(this);
  }
  saveToLocalStorage = function saveToLocalStorage() {
    if (SUPPORTS_LOCAL_STORAGE && localStorage.getItem(getLocalStorageHash(_this, 'isLocal')) === 'true') {
      localStorage.setItem(getLocalStorageHash(_this, 'gui'), JSON.stringify(_this.getSaveObject()));
    }
  };
  this.saveToLocalStorageIfPossible = saveToLocalStorage;
  function resetWidth() {
    var root = _this.getRoot();
    root.width += 1;
    Common.defer(function () {
      root.width -= 1;
    });
  }
  if (!params.parent) {
    resetWidth();
  }
};
GUI.toggleHide = function () {
  hide = !hide;
  Common.each(hideableGuis, function (gui) {
    gui.domElement.style.display = hide ? 'none' : '';
  });
};
GUI.CLASS_AUTO_PLACE = 'a';
GUI.CLASS_AUTO_PLACE_CONTAINER = 'ac';
GUI.CLASS_MAIN = 'main';
GUI.CLASS_CONTROLLER_ROW = 'cr';
GUI.CLASS_TOO_TALL = 'taller-than-window';
GUI.CLASS_CLOSED = 'closed';
GUI.CLASS_CLOSE_BUTTON = 'close-button';
GUI.CLASS_CLOSE_TOP = 'close-top';
GUI.CLASS_CLOSE_BOTTOM = 'close-bottom';
GUI.CLASS_DRAG = 'drag';
GUI.DEFAULT_WIDTH = 245;
GUI.TEXT_CLOSED = 'Close Controls';
GUI.TEXT_OPEN = 'Open Controls';
GUI._keydownHandler = function (e) {
  if (document.activeElement.type !== 'text' && (e.which === HIDE_KEY_CODE || e.keyCode === HIDE_KEY_CODE)) {
    GUI.toggleHide();
  }
};
dom.bind(window, 'keydown', GUI._keydownHandler, false);
Common.extend(GUI.prototype,
{
  add: function add(object, property) {
    return _add(this, object, property, {
      factoryArgs: Array.prototype.slice.call(arguments, 2)
    });
  },
  addColor: function addColor(object, property) {
    return _add(this, object, property, {
      color: true
    });
  },
  remove: function remove(controller) {
    this.__ul.removeChild(controller.__li);
    this.__controllers.splice(this.__controllers.indexOf(controller), 1);
    var _this = this;
    Common.defer(function () {
      _this.onResize();
    });
  },
  destroy: function destroy() {
    if (this.parent) {
      throw new Error('Only the root GUI should be removed with .destroy(). ' + 'For subfolders, use gui.removeFolder(folder) instead.');
    }
    if (this.autoPlace) {
      autoPlaceContainer.removeChild(this.domElement);
    }
    var _this = this;
    Common.each(this.__folders, function (subfolder) {
      _this.removeFolder(subfolder);
    });
    dom.unbind(window, 'keydown', GUI._keydownHandler, false);
    removeListeners(this);
  },
  addFolder: function addFolder(name) {
    if (this.__folders[name] !== undefined) {
      throw new Error('You already have a folder in this GUI by the' + ' name "' + name + '"');
    }
    var newGuiParams = { name: name, parent: this };
    newGuiParams.autoPlace = this.autoPlace;
    if (this.load &&
    this.load.folders &&
    this.load.folders[name]) {
      newGuiParams.closed = this.load.folders[name].closed;
      newGuiParams.load = this.load.folders[name];
    }
    var gui = new GUI(newGuiParams);
    this.__folders[name] = gui;
    var li = addRow(this, gui.domElement);
    dom.addClass(li, 'folder');
    return gui;
  },
  removeFolder: function removeFolder(folder) {
    this.__ul.removeChild(folder.domElement.parentElement);
    delete this.__folders[folder.name];
    if (this.load &&
    this.load.folders &&
    this.load.folders[folder.name]) {
      delete this.load.folders[folder.name];
    }
    removeListeners(folder);
    var _this = this;
    Common.each(folder.__folders, function (subfolder) {
      folder.removeFolder(subfolder);
    });
    Common.defer(function () {
      _this.onResize();
    });
  },
  open: function open() {
    this.closed = false;
  },
  close: function close() {
    this.closed = true;
  },
  hide: function hide() {
    this.domElement.style.display = 'none';
  },
  show: function show() {
    this.domElement.style.display = '';
  },
  onResize: function onResize() {
    var root = this.getRoot();
    if (root.scrollable) {
      var top = dom.getOffset(root.__ul).top;
      var h = 0;
      Common.each(root.__ul.childNodes, function (node) {
        if (!(root.autoPlace && node === root.__save_row)) {
          h += dom.getHeight(node);
        }
      });
      if (window.innerHeight - top - CLOSE_BUTTON_HEIGHT < h) {
        dom.addClass(root.domElement, GUI.CLASS_TOO_TALL);
        root.__ul.style.height = window.innerHeight - top - CLOSE_BUTTON_HEIGHT + 'px';
      } else {
        dom.removeClass(root.domElement, GUI.CLASS_TOO_TALL);
        root.__ul.style.height = 'auto';
      }
    }
    if (root.__resize_handle) {
      Common.defer(function () {
        root.__resize_handle.style.height = root.__ul.offsetHeight + 'px';
      });
    }
    if (root.__closeButton) {
      root.__closeButton.style.width = root.width + 'px';
    }
  },
  onResizeDebounced: Common.debounce(function () {
    this.onResize();
  }, 50),
  remember: function remember() {
    if (Common.isUndefined(SAVE_DIALOGUE)) {
      SAVE_DIALOGUE = new CenteredDiv();
      SAVE_DIALOGUE.domElement.innerHTML = saveDialogContents;
    }
    if (this.parent) {
      throw new Error('You can only call remember on a top level GUI.');
    }
    var _this = this;
    Common.each(Array.prototype.slice.call(arguments), function (object) {
      if (_this.__rememberedObjects.length === 0) {
        addSaveMenu(_this);
      }
      if (_this.__rememberedObjects.indexOf(object) === -1) {
        _this.__rememberedObjects.push(object);
      }
    });
    if (this.autoPlace) {
      setWidth(this, this.width);
    }
  },
  getRoot: function getRoot() {
    var gui = this;
    while (gui.parent) {
      gui = gui.parent;
    }
    return gui;
  },
  getSaveObject: function getSaveObject() {
    var toReturn = this.load;
    toReturn.closed = this.closed;
    if (this.__rememberedObjects.length > 0) {
      toReturn.preset = this.preset;
      if (!toReturn.remembered) {
        toReturn.remembered = {};
      }
      toReturn.remembered[this.preset] = getCurrentPreset(this);
    }
    toReturn.folders = {};
    Common.each(this.__folders, function (element, key) {
      toReturn.folders[key] = element.getSaveObject();
    });
    return toReturn;
  },
  save: function save() {
    if (!this.load.remembered) {
      this.load.remembered = {};
    }
    this.load.remembered[this.preset] = getCurrentPreset(this);
    markPresetModified(this, false);
    this.saveToLocalStorageIfPossible();
  },
  saveAs: function saveAs(presetName) {
    if (!this.load.remembered) {
      this.load.remembered = {};
      this.load.remembered[DEFAULT_DEFAULT_PRESET_NAME] = getCurrentPreset(this, true);
    }
    this.load.remembered[presetName] = getCurrentPreset(this);
    this.preset = presetName;
    addPresetOption(this, presetName, true);
    this.saveToLocalStorageIfPossible();
  },
  revert: function revert(gui) {
    Common.each(this.__controllers, function (controller) {
      if (!this.getRoot().load.remembered) {
        controller.setValue(controller.initialValue);
      } else {
        recallSavedValue(gui || this.getRoot(), controller);
      }
      if (controller.__onFinishChange) {
        controller.__onFinishChange.call(controller, controller.getValue());
      }
    }, this);
    Common.each(this.__folders, function (folder) {
      folder.revert(folder);
    });
    if (!gui) {
      markPresetModified(this.getRoot(), false);
    }
  },
  listen: function listen(controller) {
    var init = this.__listening.length === 0;
    this.__listening.push(controller);
    if (init) {
      updateDisplays(this.__listening);
    }
  },
  updateDisplay: function updateDisplay() {
    Common.each(this.__controllers, function (controller) {
      controller.updateDisplay();
    });
    Common.each(this.__folders, function (folder) {
      folder.updateDisplay();
    });
  }
});
function addRow(gui, newDom, liBefore) {
  var li = document.createElement('li');
  if (newDom) {
    li.appendChild(newDom);
  }
  if (liBefore) {
    gui.__ul.insertBefore(li, liBefore);
  } else {
    gui.__ul.appendChild(li);
  }
  gui.onResize();
  return li;
}
function removeListeners(gui) {
  dom.unbind(window, 'resize', gui.__resizeHandler);
  if (gui.saveToLocalStorageIfPossible) {
    dom.unbind(window, 'unload', gui.saveToLocalStorageIfPossible);
  }
}
function markPresetModified(gui, modified) {
  var opt = gui.__preset_select[gui.__preset_select.selectedIndex];
  if (modified) {
    opt.innerHTML = opt.value + '*';
  } else {
    opt.innerHTML = opt.value;
  }
}
function augmentController(gui, li, controller) {
  controller.__li = li;
  controller.__gui = gui;
  Common.extend(controller,                                   {
    options: function options(_options) {
      if (arguments.length > 1) {
        var nextSibling = controller.__li.nextElementSibling;
        controller.remove();
        return _add(gui, controller.object, controller.property, {
          before: nextSibling,
          factoryArgs: [Common.toArray(arguments)]
        });
      }
      if (Common.isArray(_options) || Common.isObject(_options)) {
        var _nextSibling = controller.__li.nextElementSibling;
        controller.remove();
        return _add(gui, controller.object, controller.property, {
          before: _nextSibling,
          factoryArgs: [_options]
        });
      }
    },
    name: function name(_name) {
      controller.__li.firstElementChild.firstElementChild.innerHTML = _name;
      return controller;
    },
    listen: function listen() {
      controller.__gui.listen(controller);
      return controller;
    },
    remove: function remove() {
      controller.__gui.remove(controller);
      return controller;
    }
  });
  if (controller instanceof NumberControllerSlider) {
    var box = new NumberControllerBox(controller.object, controller.property, { min: controller.__min, max: controller.__max, step: controller.__step });
    Common.each(['updateDisplay', 'onChange', 'onFinishChange', 'step', 'min', 'max'], function (method) {
      var pc = controller[method];
      var pb = box[method];
      controller[method] = box[method] = function () {
        var args = Array.prototype.slice.call(arguments);
        pb.apply(box, args);
        return pc.apply(controller, args);
      };
    });
    dom.addClass(li, 'has-slider');
    controller.domElement.insertBefore(box.domElement, controller.domElement.firstElementChild);
  } else if (controller instanceof NumberControllerBox) {
    var r = function r(returned) {
      if (Common.isNumber(controller.__min) && Common.isNumber(controller.__max)) {
        var oldName = controller.__li.firstElementChild.firstElementChild.innerHTML;
        var wasListening = controller.__gui.__listening.indexOf(controller) > -1;
        controller.remove();
        var newController = _add(gui, controller.object, controller.property, {
          before: controller.__li.nextElementSibling,
          factoryArgs: [controller.__min, controller.__max, controller.__step]
        });
        newController.name(oldName);
        if (wasListening) newController.listen();
        return newController;
      }
      return returned;
    };
    controller.min = Common.compose(r, controller.min);
    controller.max = Common.compose(r, controller.max);
  } else if (controller instanceof BooleanController) {
    dom.bind(li, 'click', function () {
      dom.fakeEvent(controller.__checkbox, 'click');
    });
    dom.bind(controller.__checkbox, 'click', function (e) {
      e.stopPropagation();
    });
  } else if (controller instanceof FunctionController) {
    dom.bind(li, 'click', function () {
      dom.fakeEvent(controller.__button, 'click');
    });
    dom.bind(li, 'mouseover', function () {
      dom.addClass(controller.__button, 'hover');
    });
    dom.bind(li, 'mouseout', function () {
      dom.removeClass(controller.__button, 'hover');
    });
  } else if (controller instanceof ColorController) {
    dom.addClass(li, 'color');
    controller.updateDisplay = Common.compose(function (val) {
      li.style.borderLeftColor = controller.__color.toString();
      return val;
    }, controller.updateDisplay);
    controller.updateDisplay();
  }
  controller.setValue = Common.compose(function (val) {
    if (gui.getRoot().__preset_select && controller.isModified()) {
      markPresetModified(gui.getRoot(), true);
    }
    return val;
  }, controller.setValue);
}
function recallSavedValue(gui, controller) {
  var root = gui.getRoot();
  var matchedIndex = root.__rememberedObjects.indexOf(controller.object);
  if (matchedIndex !== -1) {
    var controllerMap = root.__rememberedObjectIndecesToControllers[matchedIndex];
    if (controllerMap === undefined) {
      controllerMap = {};
      root.__rememberedObjectIndecesToControllers[matchedIndex] = controllerMap;
    }
    controllerMap[controller.property] = controller;
    if (root.load && root.load.remembered) {
      var presetMap = root.load.remembered;
      var preset = void 0;
      if (presetMap[gui.preset]) {
        preset = presetMap[gui.preset];
      } else if (presetMap[DEFAULT_DEFAULT_PRESET_NAME]) {
        preset = presetMap[DEFAULT_DEFAULT_PRESET_NAME];
      } else {
        return;
      }
      if (preset[matchedIndex] && preset[matchedIndex][controller.property] !== undefined) {
        var value = preset[matchedIndex][controller.property];
        controller.initialValue = value;
        controller.setValue(value);
      }
    }
  }
}
function _add(gui, object, property, params) {
  if (object[property] === undefined) {
    throw new Error('Object "' + object + '" has no property "' + property + '"');
  }
  var controller = void 0;
  if (params.color) {
    controller = new ColorController(object, property);
  } else {
    var factoryArgs = [object, property].concat(params.factoryArgs);
    controller = ControllerFactory.apply(gui, factoryArgs);
  }
  if (params.before instanceof Controller) {
    params.before = params.before.__li;
  }
  recallSavedValue(gui, controller);
  dom.addClass(controller.domElement, 'c');
  var name = document.createElement('span');
  dom.addClass(name, 'property-name');
  name.innerHTML = controller.property;
  var container = document.createElement('div');
  container.appendChild(name);
  container.appendChild(controller.domElement);
  var li = addRow(gui, container, params.before);
  dom.addClass(li, GUI.CLASS_CONTROLLER_ROW);
  if (controller instanceof ColorController) {
    dom.addClass(li, 'color');
  } else {
    dom.addClass(li, _typeof(controller.getValue()));
  }
  augmentController(gui, li, controller);
  gui.__controllers.push(controller);
  return controller;
}
function getLocalStorageHash(gui, key) {
  return document.location.href + '.' + key;
}
function addPresetOption(gui, name, setSelected) {
  var opt = document.createElement('option');
  opt.innerHTML = name;
  opt.value = name;
  gui.__preset_select.appendChild(opt);
  if (setSelected) {
    gui.__preset_select.selectedIndex = gui.__preset_select.length - 1;
  }
}
function showHideExplain(gui, explain) {
  explain.style.display = gui.useLocalStorage ? 'block' : 'none';
}
function addSaveMenu(gui) {
  var div = gui.__save_row = document.createElement('li');
  dom.addClass(gui.domElement, 'has-save');
  gui.__ul.insertBefore(div, gui.__ul.firstChild);
  dom.addClass(div, 'save-row');
  var gears = document.createElement('span');
  gears.innerHTML = '&nbsp;';
  dom.addClass(gears, 'button gears');
  var button = document.createElement('span');
  button.innerHTML = 'Save';
  dom.addClass(button, 'button');
  dom.addClass(button, 'save');
  var button2 = document.createElement('span');
  button2.innerHTML = 'New';
  dom.addClass(button2, 'button');
  dom.addClass(button2, 'save-as');
  var button3 = document.createElement('span');
  button3.innerHTML = 'Revert';
  dom.addClass(button3, 'button');
  dom.addClass(button3, 'revert');
  var select = gui.__preset_select = document.createElement('select');
  if (gui.load && gui.load.remembered) {
    Common.each(gui.load.remembered, function (value, key) {
      addPresetOption(gui, key, key === gui.preset);
    });
  } else {
    addPresetOption(gui, DEFAULT_DEFAULT_PRESET_NAME, false);
  }
  dom.bind(select, 'change', function () {
    for (var index = 0; index < gui.__preset_select.length; index++) {
      gui.__preset_select[index].innerHTML = gui.__preset_select[index].value;
    }
    gui.preset = this.value;
  });
  div.appendChild(select);
  div.appendChild(gears);
  div.appendChild(button);
  div.appendChild(button2);
  div.appendChild(button3);
  if (SUPPORTS_LOCAL_STORAGE) {
    var explain = document.getElementById('dg-local-explain');
    var localStorageCheckBox = document.getElementById('dg-local-storage');
    var saveLocally = document.getElementById('dg-save-locally');
    saveLocally.style.display = 'block';
    if (localStorage.getItem(getLocalStorageHash(gui, 'isLocal')) === 'true') {
      localStorageCheckBox.setAttribute('checked', 'checked');
    }
    showHideExplain(gui, explain);
    dom.bind(localStorageCheckBox, 'change', function () {
      gui.useLocalStorage = !gui.useLocalStorage;
      showHideExplain(gui, explain);
    });
  }
  var newConstructorTextArea = document.getElementById('dg-new-constructor');
  dom.bind(newConstructorTextArea, 'keydown', function (e) {
    if (e.metaKey && (e.which === 67 || e.keyCode === 67)) {
      SAVE_DIALOGUE.hide();
    }
  });
  dom.bind(gears, 'click', function () {
    newConstructorTextArea.innerHTML = JSON.stringify(gui.getSaveObject(), undefined, 2);
    SAVE_DIALOGUE.show();
    newConstructorTextArea.focus();
    newConstructorTextArea.select();
  });
  dom.bind(button, 'click', function () {
    gui.save();
  });
  dom.bind(button2, 'click', function () {
    var presetName = prompt('Enter a new preset name.');
    if (presetName) {
      gui.saveAs(presetName);
    }
  });
  dom.bind(button3, 'click', function () {
    gui.revert();
  });
}
function addResizeHandle(gui) {
  var pmouseX = void 0;
  gui.__resize_handle = document.createElement('div');
  Common.extend(gui.__resize_handle.style, {
    width: '6px',
    marginLeft: '-3px',
    height: '200px',
    cursor: 'ew-resize',
    position: 'absolute'
  });
  function drag(e) {
    e.preventDefault();
    gui.width += pmouseX - e.clientX;
    gui.onResize();
    pmouseX = e.clientX;
    return false;
  }
  function dragStop() {
    dom.removeClass(gui.__closeButton, GUI.CLASS_DRAG);
    dom.unbind(window, 'mousemove', drag);
    dom.unbind(window, 'mouseup', dragStop);
  }
  function dragStart(e) {
    e.preventDefault();
    pmouseX = e.clientX;
    dom.addClass(gui.__closeButton, GUI.CLASS_DRAG);
    dom.bind(window, 'mousemove', drag);
    dom.bind(window, 'mouseup', dragStop);
    return false;
  }
  dom.bind(gui.__resize_handle, 'mousedown', dragStart);
  dom.bind(gui.__closeButton, 'mousedown', dragStart);
  gui.domElement.insertBefore(gui.__resize_handle, gui.domElement.firstElementChild);
}
function setWidth(gui, w) {
  gui.domElement.style.width = w + 'px';
  if (gui.__save_row && gui.autoPlace) {
    gui.__save_row.style.width = w + 'px';
  }
  if (gui.__closeButton) {
    gui.__closeButton.style.width = w + 'px';
  }
}
function getCurrentPreset(gui, useInitialValues) {
  var toReturn = {};
  Common.each(gui.__rememberedObjects, function (val, index) {
    var savedValues = {};
    var controllerMap = gui.__rememberedObjectIndecesToControllers[index];
    Common.each(controllerMap, function (controller, property) {
      savedValues[property] = useInitialValues ? controller.initialValue : controller.getValue();
    });
    toReturn[index] = savedValues;
  });
  return toReturn;
}
function setPresetSelectIndex(gui) {
  for (var index = 0; index < gui.__preset_select.length; index++) {
    if (gui.__preset_select[index].value === gui.preset) {
      gui.__preset_select.selectedIndex = index;
    }
  }
}
function updateDisplays(controllerArray) {
  if (controllerArray.length !== 0) {
    requestAnimationFrame$1.call(window, function () {
      updateDisplays(controllerArray);
    });
  }
  Common.each(controllerArray, function (c) {
    c.updateDisplay();
  });
}

var color = {
  Color: Color,
  math: ColorMath,
  interpret: interpret
};
var controllers = {
  Controller: Controller,
  BooleanController: BooleanController,
  OptionController: OptionController,
  StringController: StringController,
  NumberController: NumberController,
  NumberControllerBox: NumberControllerBox,
  NumberControllerSlider: NumberControllerSlider,
  FunctionController: FunctionController,
  ColorController: ColorController
};
var dom$1 = { dom: dom };
var gui = { GUI: GUI };
var GUI$1 = GUI;
var index = {
  color: color,
  controllers: controllers,
  dom: dom$1,
  gui: gui,
  GUI: GUI$1
};

exports.color = color;
exports.controllers = controllers;
exports.dom = dom$1;
exports.gui = gui;
exports.GUI = GUI$1;
exports['default'] = index;
}
 exportDat(exports);

 console.log("exports", exports);
var dat = exports;
  console.log("THREE", THREE);
//   console.log("Stats", Stats);
  console.log("dat", dat);
  console.log("widgets", widgets);
// JUPYTER_CODE_END

  function readB64(base64) {
    var binary_string = window.atob(base64);
    var len = binary_string.length;
    var bytes = new Uint8Array(len);
    for (var i = 0; i < len; i++) {
      bytes[i] = binary_string.charCodeAt(i);
    }
    return new Float32Array( bytes.buffer );
  }

  function setKeys (dst, src) {
    for(var key in dst) {
      if(typeof(dst[key])=="object" && src[key] !== undefined)
        setKeys(dst[key], src[key]);
      else
      {
        dst[key] = src[key];
      }
    }
  }

  function getShader(name, defines)
  {
    defines = {...defines}; // copy dictionary
    if(name.endsWith(".vert"))
      defines["VERTEX_SHADER"] = true;
    if(name.endsWith(".frag"))
      defines["FRAGMENT_SHADER"] = true;
    var s ="";
    for(var key in defines)
      s += "#define " + key + " " + defines[key] + "\\n"


    var utils = window.atob(render_data.shaders['utils.h']);
    var shader = window.atob(render_data.shaders[name]).trim();
    return s + "// START FILE: utils.h \\n" + utils +'\\n// START FILE: ' + name + "\\n" + shader;
  }


  function getCookie(cname) {
    var name = cname + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.split(';');
    for(var i = 0; i <ca.length; i++) {
      var c = ca[i];
      while (c.charAt(0) == ' ') {
        c = c.substring(1);
      }
      if (c.indexOf(name) == 0) {
        return c.substring(name.length, c.length);
      }
    }
    return "";
  }

  let CameraControls = function(cameraObject, scene, domElement) {
    if ( domElement === undefined ) console.log( 'domElement is undefined' );
    if ( domElement === document ) console.error( '"document" should not be used as the target "domElement". Please use "renderer.domElement" instead.' );
    if ( !cameraObject.isPerspectiveCamera ) console.error('camera must be perspective camera');

    this.scene = scene;
    this.mesh_radius = scene.mesh_radius;
    this.mesh_center = scene.mesh_center;

    this.cameraObject = cameraObject;
    this.pivotObject = scene.pivot;
    this.domElement = domElement;

    this.transmat = new THREE.Matrix4();
    this.rotmat = new THREE.Matrix4();
    this.centermat = new THREE.Matrix4();
    this.transformationmat = new THREE.Matrix4();
    this.scale = 1.0/this.mesh_radius;

    this.centermat.makeTranslation(-this.mesh_center.x, -this.mesh_center.y, -this.mesh_center.z);

    this.mode = null;

    this.keys = { LEFT: 37, UP: 38, RIGHT: 39, DOWN: 40, CLOCKWISE: 65, COUNTERCLOCKWISE: 83};

    this.rotation_step_degree = 0.05;
    this.pan_step = 0.05;
    this.camera_step = 0.2;

    // not to change from outside
    var changeEvent = { type: 'change' };

    var scope = this;

    this.reset = () => {
      scope.transmat.identity();
      scope.rotmat.identity();
      scope.centermat.identity();
      scope.transformationmat.identity();
      scope.scale = 1.0/this.mesh_radius;
      scope.centermat.makeTranslation(-this.mesh_center.x, -this.mesh_center.y, -this.mesh_center.z);
      scope.update();
    }

    this.update = function () {
      var scale_vec = new THREE.Vector3();
      return function update() {
        scale_vec.setScalar(scope.scale);
        scope.pivotObject.matrix.copy(scope.transmat).multiply(scope.rotmat).scale(scale_vec).multiply(scope.centermat);

        const aspect = window.innerWidth/window.innerHeight;
        this.scene.axes_object.matrixWorld.makeTranslation(-0.85*aspect, -0.85, 0).multiply(scope.rotmat);
        scope.dispatchEvent( changeEvent );
      };  
    }()

    this.rotateObject = function () {
      var mat = new THREE.Matrix4();
      return function(axis, rad) {
        mat.makeRotationAxis(axis, rad);
        scope.rotmat.premultiply(mat);
      };
    }();  

    this.panObject = function () {
      var mat = new THREE.Matrix4();
      return function(dir, dist) {
        mat.makeTranslation(dist*dir.x, dist*dir.y, dist*dir.z);
        scope.transmat.premultiply(mat);
      };
    }();  

    function keydown(event) {
      var needs_update = false;
      // TODO:  should a moving camera be allowed? 
      if (event.shiftKey){ // pan
        if (event.keyCode == scope.keys.DOWN) {
          needs_update = true;
          scope.panObject(new THREE.Vector3(0, -1, 0), scope.pan_step)
        } else if (event.keyCode == scope.keys.UP) {
          needs_update = true;
          scope.panObject(new THREE.Vector3(0, 1, 0), scope.pan_step)
        } else if (event.keyCode == scope.keys.LEFT) {
          needs_update = true;
          scope.panObject(new THREE.Vector3(-1, 0, 0), scope.pan_step)
        } else if (event.keyCode == scope.keys.RIGHT) {
          needs_update = true;
          scope.panObject(new THREE.Vector3(1, 0, 0), scope.pan_step)
        } 

      } else { // rotate
        if (event.keyCode == scope.keys.DOWN) {
          needs_update = true;
          scope.rotateObject(new THREE.Vector3(1, 0, 0), scope.rotation_step_degree)
        } else if (event.keyCode == scope.keys.UP) {
          needs_update = true;
          scope.rotateObject(new THREE.Vector3(-1, 0, 0), scope.rotation_step_degree)
        } else if (event.keyCode == scope.keys.LEFT) {
          needs_update = true;
          scope.rotateObject(new THREE.Vector3(0, -1, 0), scope.rotation_step_degree)
        } else if (event.keyCode == scope.keys.RIGHT) {
          needs_update = true;
          scope.rotateObject(new THREE.Vector3(0, 1, 0), scope.rotation_step_degree)
        } else if (event.keyCode == scope.keys.CLOCKWISE) {
          needs_update = true;
          scope.rotateObject(new THREE.Vector3(0, 0, 1), scope.rotation_step_degree)
        } else if (event.keyCode == scope.keys.COUNTERCLOCKWISE) {
          needs_update = true;
          scope.rotateObject(new THREE.Vector3(0, 0, -1), scope.rotation_step_degree)
        } 
      }

      if(needs_update) {
        event.preventDefault();
        scope.update();
      }

    }

    function onMouseDown(event) {
      if(event.button==0) {
        event.preventDefault();
        scope.mode = "rotate";
      }
      if(event.button==2) {
        event.preventDefault();
        scope.mode = "move";
      }
      event.stopPropagation();
    }

    function onMouseUp(event) {
      scope.mode = null;
      scope.dispatchEvent( changeEvent );
    }


    function onMouseMove(event) {
      var needs_update = false;

      if(scope.mode=="rotate")
      {
        needs_update = true;
        scope.rotateObject(new THREE.Vector3(1, 0, 0), 0.01*event.movementY);
        scope.rotateObject(new THREE.Vector3(0, 1, 0), 0.01*event.movementX);
      }

      if(scope.mode=="move")
      {
        needs_update = true;
        scope.panObject(new THREE.Vector3(1, 0, 0), 0.004*event.movementX);
        scope.panObject(new THREE.Vector3(0, -1, 0), 0.004*event.movementY);
      }

      if(needs_update) {
        event.preventDefault();
        scope.update();
      }
    }

    var oldtouch = new THREE.Vector2(0,0);
    var olddelta = 0;
    var touchfirst = true;

    function onTouchStart(event) {
      touchfirst = true;
    }

    function onTouchMove(event) {

      event.preventDefault();

      switch ( event.touches.length ) {
        case 1:
          var pos = new THREE.Vector2(event.touches[0].pageX, event.touches[0].pageY);
          if (!touchfirst) {
            scope.rotateObject(new THREE.Vector3(1, 0, 0), 0.01*(pos.y-oldtouch.y));
            scope.rotateObject(new THREE.Vector3(0, 1, 0), 0.01*(pos.x-oldtouch.x));
          }
          oldtouch = pos;
          touchfirst = false;
          scope.update();
          break;

        default: // 2 or more
          var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
          var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
          var delta = Math.sqrt( dx * dx + dy * dy );
          if (!touchfirst) {            
            var s = Math.exp(0.01*(delta-olddelta));
            scope.scale *=  s;
          }
          touchfirst = false;
          scope.update();            
          olddelta = delta;
          break;
      }
    }



    function wheel(event) {
      event.preventDefault();
      event.stopPropagation();

      var s = Math.exp(-0.001*event.deltaY);
      scope.scale *=  s ;
      scope.update();
    }

    function contextmenu( event ) {
      event.preventDefault();
    }


    // scope.domElement.addEventListener( 'mouseup', onMouseUp, false );
    window.addEventListener( 'mouseup', onMouseUp, false );
    scope.domElement.addEventListener( 'mousedown', onMouseDown, false );
    scope.domElement.addEventListener( 'contextmenu', contextmenu, false );
    window.addEventListener( 'mousemove', onMouseMove, false );

    scope.domElement.addEventListener( 'touchstart', onTouchStart, false );    
    scope.domElement.addEventListener( 'touchmove', onTouchMove, false );

    //   window.addEventListener( 'keydown', keydown, false );
    scope.domElement.addEventListener( 'wheel', wheel, false );


    // make sure element can receive keys.

    if ( scope.domElement.tabIndex === - 1 ) {

      scope.domElement.tabIndex = 0;

    }

    this.reset();
  };



  let NGSViewC = class {
    constructor(type) {
      // var scene, renderer, camera, mesh;
      // var ortho_camera;
      // var clipping_plane;
      // var three_clipping_plane;
      // var world_clipping_plane;
      // var light_dir;
      // 
      // var colormap_divs, colormap_labels;
      // 
      // var container, stats;

      this.uniforms = {};
      this.gui_status_default = {
        eval: 0,
        subdivision: 5,
        edges: true,
        elements: true,
        colormap_ncolors: 8,
        colormap_min: -1.0,
        colormap_max: 1.0,
        deformation: 0.0,
        Complex: { phase: 0.0, deform: 0.0, animate: false, speed: 0.01 },
        Clipping: { enable: false, function: true, x: 0.0, y: 0.0, z: 1.0, dist: 0.0 },
        Light: { ambient: 0.3, diffuse: 0.7, shininess: 10, specularity: 0.3},
        Vectors: { show: false, grid_size: 10, offset: 0.0 },
        Misc: { stats: "-1", reduce_subdivision: false, "version": true, "axes": true, "colormap": true },
      };
      this.gui_status = JSON.parse(JSON.stringify(this.gui_status_default)); // deep-copy settings
      this.gui_functions = { };
      // var phase_controller;

      // var axes_object;
      // var version_object;
      this.colormap_object = null;

      // var wireframe_object;
      // var mesh_object;
      // var clipping_function_object;
      // var clipping_vectors_object;
      // var controls;

      this.have_webgl2 = false;

      this.websocket = null;

      var buffer_scene;
      var buffer_object;
      var buffer_texture;
      var buffer_camera;

      var mesh_center;
      var mesh_radius;

      var pivot;

      var have_deformation = render_data.mesh_dim == render_data.funcdim && !render_data.is_complex;
      var have_z_deformation = render_data.mesh_dim == 2 && render_data.funcdim>0;

      this.label_style  = '-moz-user-select: none; -webkit-user-select: none; -ms-user-select:none; onselectstart="return false;';
      this.label_style += 'onmousedown="return false; user-select:none;-o-user-select:none;unselectable="on";';
      this.label_style += 'position: absolute; z-index: 100; display:block;';
      this.requestId = 0;
    }

    setGuiSettings (settings) {
      setKeys(this.gui_status, settings);
      stats.showPanel(parseInt(this.gui_status.Misc.stats));
      for (var i in this.gui.__controllers)
        this.gui.__controllers[i].updateDisplay();
      for (var f in this.gui.__folders) {
        const folder = this.gui.__folders[f];
        for (var i in folder.__controllers)
          folder.__controllers[i].updateDisplay();
      }
      this.animate();
    }

    onResize() {
      const w = window.innerWidth;
      const h = window.innerHeight;
      const aspect = w/h;
      this.ortho_camera = new THREE.OrthographicCamera( -aspect, aspect, 1.0, -1.0, -100, 100 );
      if(this.colormap_object)
      {
        const x0 = -aspect*0.93;
        const y0 = 0.93;
        this.colormap_object.position.set(x0, 0.95, 0.0);
        this.colormap_object.updateWorldMatrix();

        const n = this.colormap_labels.length;
        const y = Math.round(0.5*(0.05+0.07)*window.innerHeight);
        for(var i=0; i<n; i++)
        {
          const x = Math.round(0.5*window.innerWidth*(1.0 + (x0+i/(n-1))/aspect));
          this.colormap_divs[i].setAttribute("style",this.label_style+`transform: translate(-50%, 0%); left: ${x}px; top: ${y}px` );
        }
      }
      this.camera.aspect = aspect;
      this.camera.updateProjectionMatrix();
      this.renderer.setSize( window.innerWidth, window.innerHeight );
      this.animate();
    }

    updateColormapLabels()
    {
      const n = this.colormap_labels.length;
      const min = this.gui_status.colormap_min;
      const inc = (this.gui_status.colormap_max-min)/n;
      if(this.gui_status.Misc.colormap)
        for(var i=0; i<n; i++)
          this.colormap_labels[i].nodeValue = (min+inc*i).toPrecision(2);
      else
        for(var i=0; i<n; i++)
          this.colormap_labels[i].nodeValue = "";
      this.animate();
    }

    updateClippingPlaneCamera()
    {
      const n = gui_status.Vectors.grid_size;
      var plane_center = new THREE.Vector3();
      three_clipping_plane.projectPoint(mesh_center, plane_center);
      var plane0 = three_clipping_plane.clone();
      plane0.constant = 0.0;
      const normal = three_clipping_plane.normal;


      var t2 = new THREE.Vector3();
      if(normal.z<0.5)
        plane0.projectPoint(new THREE.Vector3(0,0,1), t2);
      else if(normal.y<0.5)
        plane0.projectPoint(new THREE.Vector3(0,1,0), t2);
      else
        plane0.projectPoint(new THREE.Vector3(1,0,0), t2);

      var t1 = new THREE.Vector3().crossVectors(t2, plane0.normal);
      t1.setLength(2*mesh_radius/n);
      t2.setLength(2*mesh_radius/n);

      var position = plane_center.clone();
      position.addScaledVector(plane0.normal, 1);
      var target = plane_center.clone();
      target.addScaledVector(plane0.normal, -1);

      buffer_camera.position.copy(position);
      buffer_camera.up = t2;
      buffer_camera.lookAt(target);
      buffer_camera.updateProjectionMatrix();
      buffer_camera.updateMatrix();

      this.uniforms.clipping_plane_c.value = plane_center;
      this.uniforms.clipping_plane_t1.value = t1;
      this.uniforms.clipping_plane_t2.value = t2;
      this.uniforms.grid_size.value = n;

      const geo = clipping_vectors_object.geometry;
      var arrowid = new Float32Array(2*n * n);
      for(var i=0; i<n; i++)
        for(var j=0; j<n; j++) {
          arrowid[2*(i*n + j)+0] = 1.0*(j+0.5)/n;
          arrowid[2*(i*n + j)+1] = 1.0*(i+0.5)/n;
        }
      geo.maxInstancedCount = n*n;
      geo.setAttribute( 'arrowid', new THREE.InstancedBufferAttribute( arrowid, 2 ) );
    }

    updateGridsize()
    {
      const n = this.gui_status.Vectors.grid_size;
      this.buffer_texture = new THREE.WebGLRenderTarget( n, n, { minFilter: THREE.LinearFilter, magFilter: THREE.NearestFilter, type: THREE.HalfFloatType, format: THREE.RGBAFormat });
      this.uniforms.tex_values = new THREE.Uniform(this.buffer_texture.texture);
      let r = this.mesh_radius;
      this.buffer_camera = new THREE.OrthographicCamera( -r, r, r, -r, -10, 10 );
      this.animate();
    }

    init (element) {
      console.log("THREE", THREE);
      console.log("dat", dat);
//       console.log("Stats", Stats);

      CameraControls.prototype = Object.create( THREE.EventDispatcher.prototype );
      CameraControls.prototype.constructor = CameraControls;

      this.mesh_center = new THREE.Vector3().fromArray(render_data.mesh_center);
      this.mesh_radius = render_data.mesh_radius;
      if (render_data.websocket_url)
        this.websocket = new WebSocket(render_data.websocket_url);
      var canvas = document.createElement( 'canvas' );

      var gl2 = canvas.getContext('webgl2');

      if (gl2) {
        console.log('webgl2 is supported!');
        var context = canvas.getContext( 'webgl2', { alpha: false } );
        this.have_webgl2 = true;
      }
      else
      {
        console.log('your browser/OS/drivers do not support WebGL2');
        var context = canvas.getContext( 'webgl', { alpha: false } );
      }

      this.renderer = new THREE.WebGLRenderer( { canvas: canvas, context: context } );
      this.renderer.autoClear = false;
      console.log("Renderer", this.renderer);


      //this is to get the correct pixel detail on portable devices
      this.renderer.setPixelRatio( window.devicePixelRatio );
      // renderer.domElement.addEventListener("click", console.log, true)

      //and this sets the canvas' size.
      this.renderer.setSize( window.innerWidth, window.innerHeight );
      this.renderer.setClearColor( 0xffffff, 1 );

      this.container = document.createElement( 'div' );
      //     document.body.appendChild( this.container );
      element.appendChild( this.container );

      this.container.appendChild( this.renderer.domElement );

      //   stats = new Stats();
      //   stats.showPanel(-1); // Panel -1 = hidden, 0 = fps, 1 = ms per frame, 2 = memory usage
      //   stats.domElement.style.cssText = 'position:absolute;top:0px;left:0px;';
      //   container.appendChild( stats.domElement );

      // label with NGSolve version at right lower corner
      this.version_object = document.createElement("div");
      var style = 'bottom: 10px; right: 10px';
      this.version_object.setAttribute("style",this.label_style+style);
      var version_text = document.createTextNode("NGSolve " + render_data.ngsolve_version);
      this.version_object.appendChild(version_text)
      this.container.appendChild(this.version_object);


      this.scene = new THREE.Scene();
      this.axes_object = new THREE.AxesHelper(0.15);
      this.axes_object.matrixAutoUpdate = false;

      this.pivot = new THREE.Group();
      this.pivot.matrixAutoUpdate = false;

      this.buffer_scene = new THREE.Scene();

      this.camera = new THREE.PerspectiveCamera(
        40,                                         //FOV
        window.innerWidth / window.innerHeight,     //aspect
        1,                                          //near clipping plane
        100                                         //far clipping plane
      );

      this.camera.position.set( 0.0, 0.0, 3 );

      window.addEventListener( 'resize', ()=>this.onResize(), false );

      this.clipping_plane = new THREE.Vector4(0,0,1,0);
      let uniforms = this.uniforms;
      uniforms.clipping_plane = new THREE.Uniform( this.clipping_plane ); 
      /* should cliping plane in pivot world be calculated in shader insted of passing it? 
    currently not done because it is needed here anyways
    */
      this.three_clipping_plane  = new THREE.Plane( );

      var light_dir = new THREE.Vector3(0.5,0.5,1.5);
      light_dir.normalize();
      uniforms.light_dir = new THREE.Uniform(light_dir);
      var light_mat = new THREE.Vector4(0.3, 0.7, 10, 0.3); // ambient, diffuse, shininess, specularity
      uniforms.light_mat = new THREE.Uniform(light_mat);

      uniforms.do_clipping = new THREE.Uniform( false );

      let gui = new dat.GUI({ autoPlace: false });
      this.container.appendChild(gui.domElement);
      this.gui = gui;
      console.log("GUI", gui);
      let gui_status = this.gui_status;
      let animate = ()=>this.animate();

      if(render_data.show_wireframe)
      {
        this.wireframe_object = this.createCurvedWireframe(render_data);
        this.pivot.add(this.wireframe_object);
        uniforms.n_segments = new THREE.Uniform(5);
        gui.add(gui_status, "subdivision", 1,20,1).onChange(animate);
        gui.add(gui_status, "edges").onChange(animate);
      }

      if(render_data.show_mesh)
      {
        this.mesh_object = this.createCurvedMesh(render_data);
        this.pivot.add( this.mesh_object );
        gui.add(gui_status, "elements").onChange(animate);
      }


      if(this.have_z_deformation || this.have_deformation)
      {
        gui.add(gui_status, "deformation", 0.0, 1.0, 0.0001).onChange(animate);
        uniforms.deformation = new THREE.Uniform( gui_status.deformation );
      }

      if(render_data.is_complex)
      {
        this.gui_status_default.eval = 5;
        gui_status.eval = 5;
        gui.add(gui_status, "eval", {"real": 5,"imag":6,"norm":7}).onChange(animate);

        cgui = gui.addFolder("Complex");
        this.phase_controller = cgui.add(gui_status.Complex, "phase", 0, 2*Math.PI, 0.001).onChange(animate);
        cgui.add(gui_status.Complex, "animate").onChange(animate);
        cgui.add(gui_status.Complex, "speed", 0.0, 1, 0.0001).onChange(animate);
        uniforms.complex_scale = new THREE.Uniform( new THREE.Vector2(1, 0) );
      }
      else if(render_data.funcdim==2)
        gui.add(gui_status, "eval", {"0": 0,"1":1,"norm":3}).onChange(animate);
      else if(render_data.funcdim==3)
        gui.add(gui_status, "eval", {"0": 0,"1":1,"2":2,"norm":3}).onChange(animate);


      if(render_data.mesh_dim == 3)
      {
        let gui_clipping = gui.addFolder("Clipping");
        if(render_data.show_clipping_function)
        {
          gui_clipping.add(gui_status.Clipping, "function").onChange(animate);

          this.clipping_function_object = this.createClippingPlaneMesh(render_data);
          this.pivot.add(this.clipping_function_object);
        }

        gui_clipping.add(gui_status.Clipping, "enable").onChange(animate);
        gui_clipping.add(gui_status.Clipping, "x", -1.0, 1.0).onChange(animate);
        gui_clipping.add(gui_status.Clipping, "y", -1.0, 1.0).onChange(animate);
        gui_clipping.add(gui_status.Clipping, "z", -1.0, 1.0).onChange(animate);
        gui_clipping.add(gui_status.Clipping, "dist", -1.2*this.mesh_radius, 1.2*this.mesh_radius).onChange(animate);
      }

      uniforms.function_mode = new THREE.Uniform( 0 );
      if(render_data.funcdim>1 && !render_data.is_complex)
      {
        let gui_vec = gui.addFolder("Vectors");
        gui_vec.add(gui_status.Vectors, "show").onChange(animate);
        gui_vec.add(gui_status.Vectors, "grid_size", 1, 100, 1).onChange(()=>this.updateGridsize());
        gui_vec.add(gui_status.Vectors, "offset", -1.0, 1.0, 0.001).onChange(animate);

        if(render_data.mesh_dim==2)
          this.buffer_object = this.mesh_object.clone();
        else
          this.buffer_object = this.clipping_function_object.clone();

        this.buffer_scene.add(this.buffer_object);

        uniforms.clipping_plane_c = new THREE.Uniform( new THREE.Vector3() );
        uniforms.clipping_plane_t1 = new THREE.Uniform( new THREE.Vector3() );
        uniforms.clipping_plane_t2 = new THREE.Uniform( new THREE.Vector3() );
        uniforms.vectors_offset = new THREE.Uniform( gui_status.Vectors.offset );
        uniforms.grid_size = new THREE.Uniform( gui_status.Vectors.grid_size );

        this.clipping_vectors_object = this.createClippingVectors(render_data);
        this.pivot.add(this.clipping_vectors_object);
        this.updateGridsize();
      }

      //   controls2.target.set(0.0, 0.0, 0.0);
      //   controls2.update();
      //   controls2.addEventListener('change', animate );

      if(render_data.show_clipping_function || render_data.show_surface_function)
      {
        const cmin = render_data.funcmin;
        const cmax = Math.abs(render_data.funcmax);
        gui_status.colormap_min = cmin;
        gui_status.colormap_max = cmax;
        this.gui_status_default.colormap_min = cmin;
        this.gui_status_default.colormap_max = cmax;

        const cstep = 1e-6 * (cmax-cmin);
        gui.add(gui_status, "colormap_min", cmin, 2*cmax, cstep).onChange(()=>this.updateColormapLabels());
        gui.add(gui_status, "colormap_max", cmin, 2*cmax, cstep).onChange(()=>this.updateColormapLabels());

        gui.add(gui_status, "colormap_ncolors", 2, 32,1).onChange(()=>this.updateColormap());
      }
      uniforms.colormap_min = new THREE.Uniform( gui_status.colormap_min );
      uniforms.colormap_max = new THREE.Uniform( gui_status.colormap_max );
      this.updateColormap();

      let gui_light = gui.addFolder("Light");
      gui_light.add(gui_status.Light, "ambient", 0.0, 1.0).onChange(animate);
      gui_light.add(gui_status.Light, "diffuse", 0.0, 1.0).onChange(animate);
      gui_light.add(gui_status.Light, "shininess", 0.0, 100.0).onChange(animate);
      gui_light.add(gui_status.Light, "specularity", 0.0, 1.0).onChange(animate);

      let gui_misc = gui.addFolder("Misc");
      //   gui_misc.add(gui_status.Misc, "stats", {"none":-1, "FPS":0, "ms":1, "memory":2}).onChange(function(show_fps) {
      //       stats.showPanel( parseInt(show_fps) );
      //   });
      let gui_functions = this.gui_functions;
      gui_functions['reset settings'] = () =>{
        setGuiSettings(gui_status_default);
      };
      gui_functions['store settings'] = () => {
        document.cookie = "gui_status="+btoa(JSON.stringify(gui_status));
      };
      gui_functions['load settings'] = () =>{
        var name = "gui_status="
        var decodedCookie = decodeURIComponent(document.cookie);
        var ca = decodedCookie.split(';');
        for(var i = 0; i <ca.length; i++) {
          var c = ca[i];
          while (c.charAt(0) == ' ') {
            c = c.substring(1);
          }
          if (c.indexOf(name) == 0) {
            const s = JSON.parse(atob(c.substring(name.length, c.length)));
            setGuiSettings(s);
          }
        }
      };
      gui_misc.add(gui_functions, "reset settings");
      gui_misc.add(gui_functions, "store settings");
      gui_misc.add(gui_functions, "load settings");

      gui_misc.add(gui_status.Misc, "reduce_subdivision");

      if(this.colormap_object)
        gui_misc.add(gui_status.Misc, "colormap").onChange(()=>this.updateColormapLabels());

      gui_misc.add(gui_status.Misc, "axes").onChange(animate);
      gui_misc.add(gui_status.Misc, "version").onChange(function(value) {
        version_object.style.visibility = value ? "visible" : "hidden";
      });

      gui_functions['center'] = ()=> {
        this.controls.reset();
      };
      gui.add(gui_functions, "center").onChange(animate);

      this.scene.add( this.pivot );

      this.controls = new CameraControls(this.camera, this, this.renderer.domElement );
      this.controls.addEventListener('change', animate);

      this.onResize();
    }

    updateColormap( )
    {
      var n_colors = this.gui_status.colormap_ncolors;
      var colormap_data = new Float32Array(4*n_colors);

      var col_blue = new THREE.Vector3(0,0,1);
      var col_cyan = new THREE.Vector3(0,1,1);
      var col_green = new THREE.Vector3(0,1,0);
      var col_yellow = new THREE.Vector3(1,1,0);
      var col_red = new THREE.Vector3(1,0,0);

      for (var i=0; i<n_colors; i++)
      {
        let x = 1.0/(n_colors-1) * i;
        let hx, color;
        if (x < 0.25)
        {
          hx = 4.0*x;
          color = col_blue.clone().multiplyScalar(1.0-hx).addScaledVector(col_cyan, hx);
        }
        else if (x < 0.5)
        {
          hx = 4.0*x-1.0;
          color = col_cyan.clone().multiplyScalar(1.0-hx).addScaledVector(col_green, hx);
        }
        else if (x < 0.75)
        {
          hx = 4.0*x-2.0;
          color = col_green.clone().multiplyScalar(1.0-hx).addScaledVector(col_yellow, hx);
        }
        else
        {
          hx = 4.0*x-3.0;
          color = col_yellow.clone().multiplyScalar(1.0-hx).addScaledVector(col_red, hx);
        }
        colormap_data[3*i+0] = color.x;
        colormap_data[3*i+1] = color.y;
        colormap_data[3*i+2] = color.z;
      }

      this.colormap_texture = new THREE.DataTexture( colormap_data, n_colors, 1, THREE.RGBFormat, THREE.FloatType );
      this.colormap_texture.magFilter = THREE.NearestFilter;
      this.colormap_texture.needsUpdate = true;
      this.uniforms.tex_colormap = { value: this.colormap_texture};

      if(render_data.funcdim>0 && this.colormap_object == null)
      {
        var geo = new THREE.Geometry();
        geo.vertices.push(new THREE.Vector3( 0,   0, 0.0));
        geo.vertices.push(new THREE.Vector3( 0,-0.07, 0.0));
        geo.vertices.push(new THREE.Vector3( 1,-0.07, 0.0));
        geo.vertices.push(new THREE.Vector3( 1,   0, 0.0));
        geo.faces.push(new THREE.Face3(0, 1, 2));
        geo.faces.push(new THREE.Face3(2, 3, 0));

        geo.faceVertexUvs[0] = [];
        geo.faceVertexUvs[0].push([
          new THREE.Vector2(0, 0),
          new THREE.Vector2(0, 0),
          new THREE.Vector2(1, 0)
        ]);
        geo.faceVertexUvs[0].push([
          new THREE.Vector2(1, 0),
          new THREE.Vector2(1, 0),
          new THREE.Vector2(0, 0)
        ]);

        geo.uvsNeedUpdate = true;
        var material = new THREE.MeshBasicMaterial({depthTest: false, map: this.colormap_texture, side: THREE.DoubleSide, wireframe: false});
        this.colormap_object = new THREE.Mesh( geo, material );

        // Create 5 html div/text elements for numbers
        this.colormap_labels = [];
        this.colormap_divs = [];
        var labels_object = document.createElement("div");
        for(var i=0; i<5; i++)
        {
          var label = document.createElement("div");
          var t = document.createTextNode("");
          label.appendChild(t)
          this.colormap_divs.push(label);
          this.colormap_labels.push(t);
          labels_object.appendChild(label);
        }
        this.container.appendChild(labels_object);
        this.updateColormapLabels();
      }

      if(this.colormap_object != null)
        this.colormap_object.material.map = this.colormap_texture;

      this.animate();
    }

    createCurvedMesh(data)
    {
      var geo = new THREE.InstancedBufferGeometry();
      var position = new Float32Array(6*20*20); // 20*20 triangles

      // subdivision mesh
      var ii = 0;
      for (var i=0; i<20; i++) {
        for (var j=0; j<=i; j++) {
          position[ii++] = j;
          position[ii++] = i-j;
          position[ii++] = j+1;
          position[ii++] = i-j;
          position[ii++] = j;
          position[ii++] = i-j+1;
        }
        for (var j=0; j<i; j++) {
          position[ii++] = j+1;
          position[ii++] = i-j-1;
          position[ii++] = j+1;
          position[ii++] = i-j;
          position[ii++] = j;
          position[ii++] = i-j;
        }
      }

      this.updateSolution = ( data ) => {
        var i = 0;
        const order = render_data.order2d;
        var names;

        if(order == 1) {
          names = ['p0', 'p1', 'p2']
          if(render_data.funcdim>1)
            names = names.concat(['v0', 'v1', 'v2' ]);
        }
        if(order == 2) {
          names = ['p00', 'p01', 'p02', 'p10', 'p11', 'p20'];
          if(render_data.funcdim>1)
            names = names.concat([ 'vec00_01', 'vec02_10', 'vec11_20' ]);
        }
        if(order == 3) {
          names = [ 'p00', 'p01', 'p02', 'p03', 'p10', 'p11', 'p12', 'p20', 'p21', 'p30'];
          if(render_data.funcdim>1)
            names = names.concat([ 'vec00_01', 'vec02_03', 'vec10_11', 'vec12_20', 'vec21_30']);
        }

        for (var i in names)
          geo.setAttribute( names[i], new THREE.InstancedBufferAttribute( readB64(data[i]), 4 ) );
        this.animate();
      }
      this.updateSolution(render_data.Bezier_trig_points);

      if(this.websocket != null)
      {
        this.websocket.onmessage = async function(ev) {
          fr = new FileReader();
          fr.onload = function() {
            updateSolution(JSON.parse(this.result));
          };
          fr.readAsText(ev.data);
        };
      }

      geo.setAttribute( 'position', new THREE.Float32BufferAttribute(position, 2 ));
      geo.boundingSphere = new THREE.Sphere(this.mesh_center, this.mesh_radius);

      var defines = {MESH_2D: 1, ORDER:render_data.order2d};
      if(this.have_deformation)
        defines.DEFORMATION = 1;
      else if(this.have_z_deformation)
        defines.DEFORMATION_2D = 1;

      var mesh_material = new THREE.RawShaderMaterial({
        vertexShader: getShader( 'trigsplines.vert', defines ),
        fragmentShader: getShader( 'function.frag', defines ),
        side: THREE.DoubleSide,
        uniforms: this.uniforms
      });

      mesh_material.polygonOffset = true;
      mesh_material.polygonOffsetFactor = 1;
      mesh_material.polygonOffsetUnits = 1;

      var mesh = new THREE.Mesh( geo, mesh_material );
      return mesh;
    }


    createCurvedWireframe(data)
    {
      const n_verts = render_data.Bezier_points[0].length/3/4*3/4; // 3 components, 3/4 b64 ratio, 4 bytes per float
      var geo = new THREE.InstancedBufferGeometry();

      var inst = new Float32Array(21); // 20 = max value of n_segments
      for (var i=0; i <= 20; i++)
        inst[i] = i;

      geo.setAttribute( 'position', new THREE.Float32BufferAttribute( inst, 1 ));
      geo.setAttribute( 'p0', new THREE.InstancedBufferAttribute( readB64( render_data.Bezier_points[0]), 3 ));
      geo.setAttribute( 'p1', new THREE.InstancedBufferAttribute( readB64( render_data.Bezier_points[1]), 3 ));
      if(render_data.order2d >= 2)
        geo.setAttribute( 'p2', new THREE.InstancedBufferAttribute( readB64( render_data.Bezier_points[2]), 3 ));
      if(render_data.order2d >= 3)
        geo.setAttribute( 'p3', new THREE.InstancedBufferAttribute( readB64( render_data.Bezier_points[3]), 3 ));

      geo.maxInstancedCount = n_verts;
      geo.boundingSphere = new THREE.Sphere(this.mesh_center, this.mesh_radius);

      const defines = {ORDER: render_data.order2d};
      var wireframe_material = new THREE.RawShaderMaterial({
        vertexShader: getShader( 'splines.vert', defines ),
        fragmentShader: getShader( 'splines.frag', defines ),
        uniforms: this.uniforms
      });

      var wireframe = new THREE.Line( geo, wireframe_material );
      return wireframe;
    }


    createClippingVectors(data)
    {
      var material = new THREE.RawShaderMaterial({
        vertexShader: getShader( 'vector_function.vert' ),
        fragmentShader: getShader( 'function.frag', {NO_CLIPPING: 1}),
        side: THREE.DoubleSide,
        uniforms: this.uniforms
      });


      const geo = new THREE.InstancedBufferGeometry().fromGeometry(new THREE.ConeGeometry(0.5, 1, 10));
      var mesh = new THREE.Mesh(geo, material);
      return mesh;
    }

    createClippingPlaneMesh(data)
    {
      const defines = {ORDER: render_data.order3d, SKIP_FACE_CHECK: 1, NO_CLIPPING: 1};
      var material = new THREE.RawShaderMaterial({
        vertexShader: getShader( 'clipping_vectors.vert', defines ),
        fragmentShader: getShader( 'function.frag', defines ),
        side: THREE.DoubleSide,
        uniforms: this.uniforms
      });


      const sd = 20;    // with texture: only 10
      const nverts = 6*sd*sd*sd;
      var vertid = new Float32Array(4*nverts);
      const D = render_data.funcdim;

      var ii = 0;
      var kk = 0;
      for (var i=0; i<sd; i++) {

        for (var j=0; j<=i; j++) {
          for (var k=0; k<=i-j; k++) {
            for (var l = 0; l < 6; l++) {
              vertid[4*kk+0] = 0*6 + l;
              vertid[4*kk+1] = j;
              vertid[4*kk+2] = k;
              vertid[4*kk+3] = i-j-k;
              kk++;
            }
          }
        }

        for (var j=0; j<=i-1; j++) {
          for (var k=0; k<=i-1-j; k++) {
            for (var m = 0; m < 4; m++)
              for (var l = 0; l < 6; l++) {
                vertid[4*kk+0] = (m+1)*6 + l;                    
                vertid[4*kk+1] = j;
                vertid[4*kk+2] = k;
                vertid[4*kk+3] = i-j-k-1;
                kk++;
              }
          }
        }

        // with i>2 hexes fit into subdivided tets, add tet with point (1,1,1) in hex
        for (var j=0; j<=i-2; j++) {
          for (var k=0; k<=i-2-j; k++) {
            for (var l = 0; l < 6; l++) {
              vertid[4*kk+0] = 5*6 + l;                                    
              vertid[4*kk+1] = j+1;
              vertid[4*kk+2] = k+1;
              vertid[4*kk+3] = i-1-j-k;
              kk++;
            }

          }
        }

      }

      var geo = new THREE.InstancedBufferGeometry();
      geo.setAttribute( 'position', new THREE.Float32BufferAttribute( vertid, 4 ));
      geo.setAttribute( 'vertid',   new THREE.Float32BufferAttribute( vertid, 4 ));

      var names = [ 'p0', 'p1', 'p2', 'p3' ];
      if(render_data.order3d==2)
        names = names.concat(['p03', 'p13', 'p23', 'p01', 'p02', 'p12' ]);

      if(render_data.funcdim>1)
      {
        names = names.concat(['v0_1', 'v2_3']);
        if(render_data.order3d==2)
          names = names.concat(['v03_13', 'v23_01', 'v02_12']);
      }

      for (var i in names)
        geo.setAttribute( names[i], new THREE.InstancedBufferAttribute( readB64(render_data.points3d[i]), 4 ) );

      let mesh = new THREE.Mesh( geo, material );

      return mesh;
    }

    animate () {
      // Don't request a frame if another one is currently in the pipeline
      if(this.requestId === 0)
        this.requestId = requestAnimationFrame( ()=>this.render() );

      //   stats.update();
    }

    render() {
      this.requestId = 0;

      let gui_status = this.gui_status;
      let uniforms = this.uniforms;

      this.axes_object.visible = gui_status.Misc.axes;
      var subdivision = gui_status.subdivision;
      if(gui_status.Misc.reduce_subdivision && controls.mode != null)
        subdivision = Math.ceil(subdivision/2);

      if( this.wireframe_object != null )
      {
        this.wireframe_object.visible = gui_status.edges;
        if(gui_status.subdivision !== undefined)
        {
          uniforms.n_segments.value = subdivision;
          this.wireframe_object.geometry.setDrawRange(0, subdivision+1)
        }
      }

      if( this.mesh_object != null )
      {
        this.mesh_object.visible = gui_status.elements;
        if(gui_status.subdivision !== undefined)
        {
          uniforms.n_segments.value = subdivision;
          this.mesh_object.geometry.setDrawRange(0, 3*subdivision*subdivision)
        }
      }


      if( this.clipping_function_object != null )
      {
        uniforms.n_segments.value = subdivision;
        const sd = subdivision;
        this.clipping_function_object.geometry.setDrawRange(0, 6*sd*sd*sd)
        this.clipping_function_object.visible = gui_status.Clipping.function && gui_status.Clipping.enable;
      }

      let three_clipping_plane = this.three_clipping_plane;
      three_clipping_plane.normal.set(gui_status.Clipping.x, gui_status.Clipping.y, gui_status.Clipping.z);
      three_clipping_plane.normal.normalize();
      three_clipping_plane.constant = gui_status.Clipping.dist; // -three_clipping_plane.normal.dot(mesh_center);

      // console.log("three_clipping_plane normal and const", three_clipping_plane.normal, three_clipping_plane.constant);

      this.clipping_plane.set(
        three_clipping_plane.normal.x,
        three_clipping_plane.normal.y,
        three_clipping_plane.normal.z,
        three_clipping_plane.constant);
      this.renderer.clippingPlanes = [];

      let world_clipping_plane = three_clipping_plane.clone();

      world_clipping_plane.constant = gui_status.Clipping.dist;
      world_clipping_plane.applyMatrix4( this.pivot.matrix)

      uniforms.do_clipping.value = gui_status.Clipping.enable;

      if(this.have_deformation || this.have_z_deformation)
        uniforms.deformation.value = gui_status.deformation;

      if(gui_status.Clipping.enable)
        this.renderer.clippingPlanes = [world_clipping_plane];

      if(gui_status.colormap_ncolors)
      {
        uniforms.colormap_min.value = gui_status.colormap_min;
        uniforms.colormap_max.value = gui_status.colormap_max;
      }

      if(this.clipping_vectors_object != null)
      {
        this.clipping_vectors_object.visible = gui_status.Vectors.show;
        uniforms.vectors_offset.value = gui_status.Vectors.offset;
      }

      if(render_data.is_complex)
      {
        uniforms.complex_scale.value.x = Math.cos(gui_status.Complex.phase);
        uniforms.complex_scale.value.y = Math.sin(gui_status.Complex.phase);
      }

      if(gui_status.Vectors.show)
      {
        this.updateClippingPlaneCamera();
        uniforms.function_mode.value = 4;
        this.renderer.setRenderTarget(buffer_texture);
        this.renderer.setClearColor( new THREE.Color(0.0,0.0,0.0) );
        this.renderer.clear(true, true, true);
        this.renderer.render(this.buffer_scene, this.buffer_camera);
      }


      uniforms.function_mode.value = parseInt(gui_status.eval);
      uniforms.light_mat.value.x = gui_status.Light.ambient;
      uniforms.light_mat.value.y = gui_status.Light.diffuse;
      uniforms.light_mat.value.z = gui_status.Light.shininess;
      uniforms.light_mat.value.w = gui_status.Light.specularity;

      this.renderer.setClearColor( new THREE.Color(1.0,1.0,1.0));
      this.renderer.clear(true, true, true);
      this.renderer.setRenderTarget(null);
      this.renderer.render( this.scene, this.camera );


      this.renderer.clippingPlanes = [];
      if(this.colormap_object && gui_status.Misc.colormap)
        this.renderer.render( this.colormap_object, this.ortho_camera );

      if(this.axes_object && gui_status.Misc.axes)
        this.renderer.render( this.axes_object, this.ortho_camera );


      if(gui_status.Complex.animate)
      {
        gui_status.Complex.phase += gui_status.Complex.speed;
        if(gui_status.Complex.phase>2*Math.PI)
          gui_status.Complex.phase -= 2*Math.PI;

        this.phase_controller.updateDisplay();
        this.animate();
      }
    }
  }

// JUPYTER_CODE_BEGIN
  // TODO: Don't set global variable render_data->store it in scene
  var render_data;

  let NGSView = widgets.DOMWidgetView.extend({
    defaults: _.extend({}, widgets.DOMWidgetModel.prototype.defaults, { value: '' }),
    render: function() {
      console.log("Render NGSView");
      render_data = this.model.get("render_data");
      console.log("render data", render_data);
      this.scene = new NGSViewC();
      this.scene.init(this.el);
      this.data_changed();
      this.model.on('change:render_data', this.data_changed, this);
    },
    data_changed: function() {
      console.log("NGSView data changed");
      render_data = this.model.get("render_data");
      // TODO: Update more data (mesh wireframe, 3d mesh data etc.)
      this.scene.updateSolution(render_data.Bezier_trig_points);
    },
  });

  return {NGSView};
});
// JUPYTER_CODE_END

// HTML_CODE_BEGIN
let scene = new NGSViewC();
scene.init(document.body);
// HTML_CODE_END