NodeMaterial: Add Noise2DNode, Noise3DNode, Fractal3DNode.

examples/jsm/nodes/Nodes.js

@@ -56,8 +56,10 @@ export { CondNode } from './math/CondNode.js';
 
 // procedural
 
-export { NoiseNode } from './procedural/NoiseNode.js';
+export { Noise2DNode } from './procedural/Noise2DNode.js';
+export { Noise3DNode } from './procedural/Noise3DNode.js';
 export { CheckerNode } from './procedural/CheckerNode.js';
+export { Fractal3DNode } from './procedural/Fractal3DNode.js';
 
 // misc
 

examples/jsm/nodes/procedural/Fractal3DNode.js

@@ -0,0 +1,105 @@
+import { TempNode } from '../core/TempNode.js';
+import { FunctionNode } from '../core/FunctionNode.js';
+import { FunctionCallNode } from '../core/FunctionCallNode.js';
+import { IntNode } from '../inputs/IntNode.js';
+import { FloatNode } from '../inputs/FloatNode.js';
+import { PositionNode } from '../accessors/PositionNode.js';
+import { Noise2DNode } from './Noise2DNode.js';
+import { Noise3DNode } from './Noise3DNode.js';
+
+const FRACTAL3D_SRC = `
+float fractal3d( vec3 p, float amplitude, int octaves, float lacunarity, float diminish ) {
+
+	float result = 0.0;
+
+	for (int i = 0;  i < octaves; ++i) {
+
+		result += noise3d(p, amplitude, 0.0);
+		amplitude *= diminish;
+		p *= lacunarity;
+
+	}
+
+	return result;
+
+}
+`.trim();
+
+/** Fractional Brownian motion. */
+class Fractal3DNode extends TempNode {
+
+	constructor( position = new PositionNode(), amplitude = new FloatNode( 1.0 ), octaves = 3.0, lacunarity = 2.0, diminish = 0.5 ) {
+
+		super( 'f' );
+
+		this.position = position;
+		this.amplitude = amplitude;
+		this.octaves = new IntNode( octaves ).setReadonly( true );
+		this.lacunarity = new FloatNode( lacunarity ).setReadonly( true );
+		this.diminish = new FloatNode( diminish ).setReadonly( true );
+
+	}
+
+	generate( builder, output ) {
+
+		const fractal3d = new FunctionCallNode( Fractal3DNode.Nodes.fractal3d, [
+
+			this.position,
+			this.amplitude,
+			this.octaves,
+			this.lacunarity,
+			this.diminish,
+
+		] );
+
+		return builder.format( fractal3d.generate( builder, output ), this.getType( builder ), output );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.position = source.position;
+		this.amplitude = source.amplitude;
+		this.octaves = source.octaves;
+		this.lacunarity = source.lacunarity;
+		this.diminish = source.diminish;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = this.getJSONNode( meta );
+
+		if ( ! data ) {
+
+			data = this.createJSONNode( meta );
+
+			data.position = this.position.toJSON( meta ).uuid;
+			data.amplitude = this.amplitude.toJSON( meta ).uuid;
+			data.octaves = this.octaves.toJSON( meta ).uuid;
+			data.lacunarity = this.lacunarity.toJSON( meta ).uuid;
+			data.diminish = this.diminish.toJSON( meta ).uuid;
+
+		}
+
+		return data;
+
+	}
+
+}
+
+Fractal3DNode.prototype.nodeType = 'Fractal3D';
+
+Fractal3DNode.Nodes = (function () {
+
+	const fractal3d = new FunctionNode( FRACTAL3D_SRC );
+
+	fractal3d.includes = [ Noise3DNode.Nodes.noise3d ];
+
+	return { fractal3d };
+
+})();
+
+export { Fractal3DNode };

examples/jsm/nodes/procedural/Noise2DNode.js

@@ -0,0 +1,150 @@
+import { TempNode } from '../core/TempNode.js';
+import { FunctionNode } from '../core/FunctionNode.js';
+import { FunctionCallNode } from '../core/FunctionCallNode.js';
+import { IntNode } from '../inputs/IntNode.js';
+import { FloatNode } from '../inputs/FloatNode.js';
+import { UVNode } from '../accessors/UVNode.js';
+
+const NOISE_COMMON_SRC = `
+vec3 mod289( vec3 x ) {
+
+	return x - floor( x * ( 1.0 / 289.0 ) ) * 289.0;
+
+}
+
+vec4 mod289( vec4 x ) {
+
+	return x - floor( x * ( 1.0 / 289.0 ) ) * 289.0;
+
+}
+
+vec4 permute( vec4 x ) {
+
+	return mod289( ( ( x * 34.0 ) + 1.0 ) * x );
+
+}
+
+vec4 taylorInvSqrt( vec4 r ) {
+
+	return 1.79284291400159 - 0.85373472095314 * r;
+
+}
+
+vec2 fade( vec2 t ) {
+
+	return t * t * t * ( t * ( t * 6.0 - 15.0 ) + 10.0 );
+
+}
+
+vec3 fade( vec3 t ) {
+
+	return t * t * t * ( t * ( t * 6.0 - 15.0 ) + 10.0 );
+
+}
+`.trim();
+
+const NOISE2D_SRC = `
+float noise2d( vec2 P, float amplitude, float pivot ) {
+
+	vec4 Pi = floor(P.xyxy) + vec4(0.0, 0.0, 1.0, 1.0);
+	vec4 Pf = fract(P.xyxy) - vec4(0.0, 0.0, 1.0, 1.0);
+	Pi = mod289(Pi); // To avoid truncation effects in permutation
+	vec4 ix = Pi.xzxz;
+	vec4 iy = Pi.yyww;
+	vec4 fx = Pf.xzxz;
+	vec4 fy = Pf.yyww;
+
+	vec4 i = permute(permute(ix) + iy);
+
+	vec4 gx = fract(i * (1.0 / 41.0)) * 2.0 - 1.0 ;
+	vec4 gy = abs(gx) - 0.5 ;
+	vec4 tx = floor(gx + 0.5);
+	gx = gx - tx;
+
+	vec2 g00 = vec2(gx.x,gy.x);
+	vec2 g10 = vec2(gx.y,gy.y);
+	vec2 g01 = vec2(gx.z,gy.z);
+	vec2 g11 = vec2(gx.w,gy.w);
+
+	vec4 norm = taylorInvSqrt(vec4(dot(g00, g00), dot(g01, g01), dot(g10, g10), dot(g11, g11)));
+	g00 *= norm.x;
+	g01 *= norm.y;
+	g10 *= norm.z;
+	g11 *= norm.w;
+
+	float n00 = dot(g00, vec2(fx.x, fy.x));
+	float n10 = dot(g10, vec2(fx.y, fy.y));
+	float n01 = dot(g01, vec2(fx.z, fy.z));
+	float n11 = dot(g11, vec2(fx.w, fy.w));
+
+	vec2 fade_xy = fade(Pf.xy);
+	vec2 n_x = mix(vec2(n00, n01), vec2(n10, n11), fade_xy.x);
+	float n_xy = mix(n_x.x, n_x.y, fade_xy.y);
+	return 2.3 * n_xy * amplitude + pivot;
+
+}
+`.trim();
+
+class Noise2DNode extends TempNode {
+
+	constructor( uv = new UVNode(), amplitude = new FloatNode( 1.0 ), pivot = new FloatNode( 0.0 ) ) {
+
+		super( 'f' );
+
+		this.uv = uv;
+		this.amplitude = amplitude;
+		this.pivot = pivot;
+
+	}
+
+	generate(builder, output) {
+
+		const noise2d = new FunctionCallNode( Noise2DNode.Nodes.noise2d, [ this.uv, this.amplitude, this.pivot ] );
+		return builder.format( noise2d.generate( builder, output ), this.getType( builder ), output );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.uv = source.uv;
+		this.amplitude = source.amplitude;
+		this.pivot = source.pivot;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = this.getJSONNode( meta );
+
+		if ( ! data ) {
+
+			data = this.createJSONNode( meta );
+
+			data.uv = this.uv.toJSON( meta ).uuid;
+			data.amplitude = this.amplitude.toJSON( meta ).uuid;
+			data.pivot = this.pivot.toJSON( meta ).uuid;
+
+		}
+
+		return data;
+
+	}
+
+}
+
+Noise2DNode.prototype.nodeType = 'Noise2D';
+
+Noise2DNode.Nodes = (function () {
+
+	const noiseCommon = new FunctionNode( NOISE_COMMON_SRC );
+	const noise2d = new FunctionNode( NOISE2D_SRC );
+
+	noise2d.includes = [ noiseCommon ];
+
+	return { noiseCommon, noise2d };
+
+})();
+
+export { Noise2DNode };