first commit

public/sdk/three/jsm/nodes/math/TriNoise3D.js

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+// https://github.com/cabbibo/glsl-tri-noise-3d
+
+import { loop } from '../utils/LoopNode.js';
+import { float, vec3, tslFn } from '../shadernode/ShaderNode.js';
+
+const tri = tslFn( ( [ x ] ) => {
+
+	return x.fract().sub( .5 ).abs();
+
+} );
+
+const tri3 = tslFn( ( [ p ] ) => {
+
+	return vec3( tri( p.z.add( tri( p.y.mul( 1. ) ) ) ), tri( p.z.add( tri( p.x.mul( 1. ) ) ) ), tri( p.y.add( tri( p.x.mul( 1. ) ) ) ) );
+
+} );
+
+const triNoise3D = tslFn( ( [ p_immutable, spd, time ] ) => {
+
+	const p = vec3( p_immutable ).toVar();
+	const z = float( 1.4 ).toVar();
+	const rz = float( 0.0 ).toVar();
+	const bp = vec3( p ).toVar();
+
+	loop( { start: float( 0.0 ), end: float( 3.0 ), type: 'float', condition: '<=' }, () => {
+
+		const dg = vec3( tri3( bp.mul( 2.0 ) ) ).toVar();
+		p.addAssign( dg.add( time.mul( float( 0.1 ).mul( spd ) ) ) );
+		bp.mulAssign( 1.8 );
+		z.mulAssign( 1.5 );
+		p.mulAssign( 1.2 );
+
+		const t = float( tri( p.z.add( tri( p.x.add( tri( p.y ) ) ) ) ) ).toVar();
+		rz.addAssign( t.div( z ) );
+		bp.addAssign( 0.14 );
+
+	} );
+
+	return rz;
+
+} );
+
+// layouts
+
+tri.setLayout( {
+	name: 'tri',
+	type: 'float',
+	inputs: [
+		{ name: 'x', type: 'float' }
+	]
+} );
+
+tri3.setLayout( {
+	name: 'tri3',
+	type: 'vec3',
+	inputs: [
+		{ name: 'p', type: 'vec3' }
+	]
+} );
+
+triNoise3D.setLayout( {
+	name: 'triNoise3D',
+	type: 'float',
+	inputs: [
+		{ name: 'p', type: 'vec3' },
+		{ name: 'spd', type: 'float' },
+		{ name: 'time', type: 'float' }
+	]
+} );
+
+export { tri, tri3, triNoise3D };