修改静态资源文件夹位置

public/sdk/three/jsm/nodes/materials/InstancedPointsNodeMaterial.js

@@ -0,0 +1,162 @@
+import NodeMaterial, { addNodeMaterial } from './NodeMaterial.js';
+import { varying } from '../core/VaryingNode.js';
+import { property } from '../core/PropertyNode.js';
+import { attribute } from '../core/AttributeNode.js';
+import { cameraProjectionMatrix } from '../accessors/CameraNode.js';
+import { materialColor, materialPointWidth } from '../accessors/MaterialNode.js'; // or should this be a property, instead?
+import { modelViewMatrix } from '../accessors/ModelNode.js';
+import { positionGeometry } from '../accessors/PositionNode.js';
+import { smoothstep } from '../math/MathNode.js';
+import { tslFn, vec2, vec4 } from '../shadernode/ShaderNode.js';
+import { uv } from '../accessors/UVNode.js';
+import { viewport } from '../display/ViewportNode.js';
+
+import { PointsMaterial } from 'three';
+
+const defaultValues = new PointsMaterial();
+
+class InstancedPointsNodeMaterial extends NodeMaterial {
+
+	constructor( params = {} ) {
+
+		super();
+
+		this.normals = false;
+
+		this.lights = false;
+
+		this.useAlphaToCoverage = true;
+
+		this.useColor = params.vertexColors;
+
+		this.pointWidth = 1;
+
+		this.pointColorNode = null;
+
+		this.setDefaultValues( defaultValues );
+
+		this.setupShaders();
+
+		this.setValues( params );
+
+	}
+
+	setupShaders() {
+
+		const useAlphaToCoverage = this.alphaToCoverage;
+		const useColor = this.useColor;
+
+		this.vertexNode = tslFn( () => {
+
+			//vUv = uv;
+			varying( vec2(), 'vUv' ).assign( uv() ); // @TODO: Analyze other way to do this
+
+			const instancePosition = attribute( 'instancePosition' );
+
+			// camera space
+			const mvPos = property( 'vec4', 'mvPos' );
+			mvPos.assign( modelViewMatrix.mul( vec4( instancePosition, 1.0 ) ) );
+
+			const aspect = viewport.z.div( viewport.w );
+
+			// clip space
+			const clipPos = cameraProjectionMatrix.mul( mvPos );
+
+			// offset in ndc space
+			const offset = property( 'vec2', 'offset' );
+			offset.assign( positionGeometry.xy );
+			offset.assign( offset.mul( materialPointWidth ) );
+			offset.assign( offset.div( viewport.z ) );
+			offset.y.assign( offset.y.mul( aspect ) );
+
+			// back to clip space
+			offset.assign( offset.mul( clipPos.w ) );
+
+			//clipPos.xy += offset;
+			clipPos.assign( clipPos.add( vec4( offset, 0, 0 ) ) );
+
+			return clipPos;
+
+			//vec4 mvPosition = mvPos; // this was used for somethihng...
+
+		} )();
+
+		this.fragmentNode = tslFn( () => {
+
+			const vUv = varying( vec2(), 'vUv' );
+
+			// force assignment into correct place in flow
+			const alpha = property( 'float', 'alpha' );
+			alpha.assign( 1 );
+
+			const a = vUv.x;
+			const b = vUv.y;
+
+			const len2 = a.mul( a ).add( b.mul( b ) );
+
+			if ( useAlphaToCoverage ) {
+
+				// force assignment out of following 'if' statement - to avoid uniform control flow errors
+				const dlen = property( 'float', 'dlen' );
+				dlen.assign( len2.fwidth() );
+
+				alpha.assign( smoothstep( dlen.oneMinus(), dlen.add( 1 ), len2 ).oneMinus() );
+
+			} else {
+
+				len2.greaterThan( 1.0 ).discard();
+
+			}
+
+			let pointColorNode;
+
+			if ( this.pointColorNode ) {
+
+				pointColorNode = this.pointColorNode;
+
+			} else {
+
+				if ( useColor ) {
+
+					const instanceColor = attribute( 'instanceColor' );
+
+					pointColorNode = instanceColor.mul( materialColor );
+
+				} else {
+
+					pointColorNode = materialColor;
+
+				}
+
+			}
+
+			return vec4( pointColorNode, alpha );
+
+		} )();
+
+		this.needsUpdate = true;
+
+	}
+
+	get alphaToCoverage() {
+
+		return this.useAlphaToCoverage;
+
+	}
+
+	set alphaToCoverage( value ) {
+
+		if ( this.useAlphaToCoverage !== value ) {
+
+			this.useAlphaToCoverage = value;
+			this.setupShaders();
+
+		}
+
+	}
+
+}
+
+export default InstancedPointsNodeMaterial;
+
+addNodeMaterial( 'InstancedPointsNodeMaterial', InstancedPointsNodeMaterial );