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fcc.html
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fcc.html
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<html>
<head>
<title>Face-centered cubic</title>
<script src="three.js-master/build/three.js"></script>
<script src="three.js-master/examples/js/controls/OrbitControls.js"></script>
<script src="three.js-master/examples/js/libs/dat.gui.min.js"></script>
</head>
<body>
<nav style="position: absolute; top:0; left:0, height:2vh; z-index:999">
<a href="." style="color: #66ffff">Back to index.</a>
</nav>
<script>
//Fix by removing "Buffer" from "BufferGeometry".
"use strict";
var container, renderer, scene, cells, camera, controls;
function Cell() {
THREE.Group.call(this);
var hemGeom = Cell.hemGeom;
var qrGeom = Cell.qrGeom;
var mat = Cell.mat;
var target = new THREE.Vector3();
var axes = ['x','y','z'];
for (let i = 0; i < 6; i++) {
let hemisphere = new THREE.Mesh(hemGeom, mat);
hemisphere.scale.copy(Cell.commonScale);
target[axes[i%3]] = (i%2-0.5)*2;
hemisphere.lookAt(target);
target[axes[i%3]] = 0;
hemisphere.position[axes[i%3]] = -(i%2-0.5);
this.add(hemisphere);
}
/*let count = 0;
outer:*/
for (let i = 0; i < 2; i++) {
for (let j = 0; j < 2; j++) {
let sign = 1-2*j;
for (let k = 0; k < 2; k++) {//(let k = j; k===0 || k===1; k+=sign) {
let ks = j+k*sign;
let qsphere = new THREE.Mesh(qrGeom, mat);
qsphere.scale.copy(Cell.commonScale);
qsphere.position.set((2*i-1)*0.5*s, (2*j-1)*0.5*s, (2*ks-1)*0.5*s);
if (i===1) {
qsphere.rotation.z = Math.PI;
}
qsphere.rotation.x = -(i+2*j+k)*Math.PI/2;
this.add(qsphere);
/*count++;
if (count === 8)
break outer;*/
}
}
}
this.add(new THREE.Box3Helper(new THREE.Box3(new THREE.Vector3(-s/2,-s/2,-s/2), new THREE.Vector3(s/2,s/2,s/2))));
}
Cell.prototype = Object.create(THREE.Group.prototype);
Cell.prototype.constructor = Cell;
var s = 1; //cell side length
var r = s*Math.sqrt(2)/4; //atom radius
Cell.hemGeom = new THREE.SphereBufferGeometry(r, 8,8, 0, Math.PI, 0, Math.PI);
Cell.qrGeom = new THREE.SphereBufferGeometry(r, 4,4, 0, Math.PI/2, 0, Math.PI/2);
Cell.qrGeom.rotateY(Math.PI/2);
//Cell.qrGeom.translate(s/2,-s/2,-s/2);
Cell.mat = new THREE.MeshPhongMaterial( {color: 0x8888ff, side: THREE.DoubleSide, transparent: true, opacity: 0.7} );
var pars = {
pr: 0.8
};
Cell.commonScale = new THREE.Vector3(pars.pr,pars.pr,pars.pr);
function addCell(xc,yc,zc) {
var cell = new Cell();
cell.position.set(xc,yc,zc);
cells.add(cell);
}
(function init() {
document.body.style = "overflow: hidden;";
container = document.createElement("div");
container.style = "position: absolute; top: 0; left: 0;"
document.body.appendChild(container);
renderer = new THREE.WebGLRenderer( {antialias: true} );
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setClearColor(0xcccccc);
container.appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera(45, window.innerWidth/window.innerHeight, 0.01, 100);
camera.position.set(2,2,2);
controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.target.set(0,0,0);
controls.maxDistance = 50;
controls.addEventListener("change", ()=>requestAnimationFrame(render));
controls.update();
scene = new THREE.Scene();
scene.add(camera);
scene.add(new THREE.AxesHelper(6000));
var light = new THREE.PointLight(0xffffff, 0.5);
light.position.set(10,10,10);
scene.add(light);
light = light.clone();
light.position.set(-10,-10,-10);
scene.add(light);
cells = new THREE.Group();
scene.add(cells);
for (var i=-1; i<2; i++) {
for (var j=-1; j<2; j++) {
for (var k=-1; k<2; k++) {
addCell(i*s,j*s,k*s);
}
}
}
window.addEventListener('resize', onWindowResize, false);
let gui = new dat.GUI();
gui.add(pars, "pr", 0.01, 1).onChange(function(value) {
Cell.commonScale.set(value,value,value);
cells.traverse(function(obj) {
if (obj.isMesh) {
obj.scale.copy(Cell.commonScale);
}
});
});
requestAnimationFrame(render);
})();
function render() {
renderer.render(scene, camera);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
requestAnimationFrame(render);
}
</script>
</body>
</html>