Vom Anderen PC aus hoch gespielt

2026-02-01 13:40:05 +01:00
commit 60b1b7591c
1088 changed files with 452896 additions and 0 deletions
--- a/node_modules/three/examples/jsm/nodes/materials/Line2NodeMaterial.js
+++ b/node_modules/three/examples/jsm/nodes/materials/Line2NodeMaterial.js
@@ -0,0 +1,448 @@
+import NodeMaterial, { addNodeMaterial } from './NodeMaterial.js';
+import { temp } from '../core/VarNode.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, materialLineScale, materialLineDashSize, materialLineGapSize, materialLineDashOffset, materialLineWidth } from '../accessors/MaterialNode.js';
+import { modelViewMatrix } from '../accessors/ModelNode.js';
+import { positionGeometry } from '../accessors/PositionNode.js';
+import { mix, smoothstep } from '../math/MathNode.js';
+import { tslFn, float, vec2, vec3, vec4, If } from '../shadernode/ShaderNode.js';
+import { uv } from '../accessors/UVNode.js';
+import { viewport } from '../display/ViewportNode.js';
+import { dashSize, gapSize } from '../core/PropertyNode.js';
+
+import { LineDashedMaterial } from 'three';
+
+const defaultValues = new LineDashedMaterial();
+
+class Line2NodeMaterial extends NodeMaterial {
+
+	constructor( params = {} ) {
+
+		super();
+
+		this.normals = false;
+		this.lights = false;
+
+		this.setDefaultValues( defaultValues );
+
+		this.useAlphaToCoverage = true;
+		this.useColor = params.vertexColors;
+		this.useDash = params.dashed;
+		this.useWorldUnits = false;
+
+		this.dashOffset = 0;
+		this.lineWidth = 1;
+
+		this.lineColorNode = null;
+
+		this.offsetNode = null;
+		this.dashScaleNode = null;
+		this.dashSizeNode = null;
+		this.gapSizeNode = null;
+
+		this.setupShaders();
+
+		this.setValues( params );
+
+	}
+
+	setupShaders() {
+
+		const useAlphaToCoverage = this.alphaToCoverage;
+		const useColor = this.useColor;
+		const useDash = this.dashed;
+		const useWorldUnits = this.worldUnits;
+
+		const trimSegment = tslFn( ( { start, end } ) => {
+
+			const a = cameraProjectionMatrix.element( 2 ).element( 2 ); // 3nd entry in 3th column
+			const b = cameraProjectionMatrix.element( 3 ).element( 2 ); // 3nd entry in 4th column
+			const nearEstimate = b.mul( -0.5 ).div( a );
+
+			const alpha = nearEstimate.sub( start.z ).div( end.z.sub( start.z ) );
+
+			return vec4( mix( start.xyz, end.xyz, alpha ), end.w );
+
+		} );
+
+		this.vertexNode = tslFn( () => {
+
+			varying( vec2(), 'vUv' ).assign( uv() ); // @TODO: Analyze other way to do this
+
+			const instanceStart = attribute( 'instanceStart' );
+			const instanceEnd = attribute( 'instanceEnd' );
+
+			// camera space
+
+			const start = property( 'vec4', 'start' );
+			const end = property( 'vec4', 'end' );
+
+			start.assign( modelViewMatrix.mul( vec4( instanceStart, 1.0 ) ) ); // force assignment into correct place in flow
+			end.assign( modelViewMatrix.mul( vec4( instanceEnd, 1.0 ) ) );
+
+			if ( useWorldUnits ) {
+
+				varying( vec3(), 'worldStart' ).assign( start.xyz );
+				varying( vec3(), 'worldEnd' ).assign( end.xyz );
+
+			}
+
+			const aspect = viewport.z.div( viewport.w );
+
+			// special case for perspective projection, and segments that terminate either in, or behind, the camera plane
+			// clearly the gpu firmware has a way of addressing this issue when projecting into ndc space
+			// but we need to perform ndc-space calculations in the shader, so we must address this issue directly
+			// perhaps there is a more elegant solution -- WestLangley
+
+			const perspective = cameraProjectionMatrix.element( 2 ).element( 3 ).equal( -1.0 ); // 4th entry in the 3rd column
+
+			If( perspective, () => {
+
+				If( start.z.lessThan( 0.0 ).and( end.z.greaterThan( 0.0 ) ), () => {
+
+					end.assign( trimSegment( { start: start, end: end } ) );
+
+				} ).elseif( end.z.lessThan( 0.0 ).and( start.z.greaterThanEqual( 0.0 ) ), () => {
+
+					start.assign( trimSegment( { start: end, end: start } ) );
+
+			 	} );
+
+			} );
+
+			// clip space
+			const clipStart = cameraProjectionMatrix.mul( start );
+			const clipEnd = cameraProjectionMatrix.mul( end );
+
+			// ndc space
+			const ndcStart = clipStart.xyz.div( clipStart.w );
+			const ndcEnd = clipEnd.xyz.div( clipEnd.w );
+
+			// direction
+			const dir = ndcEnd.xy.sub( ndcStart.xy ).temp();
+
+			// account for clip-space aspect ratio
+			dir.x.assign( dir.x.mul( aspect ) );
+			dir.assign( dir.normalize() );
+
+			const clip = temp( vec4() );
+
+			if ( useWorldUnits ) {
+
+				// get the offset direction as perpendicular to the view vector
+				const worldDir = end.xyz.sub( start.xyz ).normalize();
+
+				const offset = positionGeometry.y.lessThan( 0.5 ).cond(
+					start.xyz.cross( worldDir ).normalize(),
+					end.xyz.cross( worldDir ).normalize()
+
+				);
+
+				// sign flip
+				offset.assign( positionGeometry.x.lessThan( 0.0 ).cond( offset.negate(), offset ) );
+
+				const forwardOffset = worldDir.dot( vec3( 0.0, 0.0, 1.0 ) );
+
+				// don't extend the line if we're rendering dashes because we
+				// won't be rendering the endcaps
+				if ( ! useDash ) {
+
+					// extend the line bounds to encompass endcaps
+					start.assign( start.sub( vec4( worldDir.mul( materialLineWidth ).mul( 0.5 ), 0 ) ) );
+					end.assign( end.add( vec4( worldDir.mul( materialLineWidth ).mul( 0.5 ), 0 ) ) );
+
+					// shift the position of the quad so it hugs the forward edge of the line
+					offset.assign( offset.sub( vec3( dir.mul( forwardOffset ), 0 ) ) );
+					offset.z.assign( offset.z.add( 0.5 ) );
+
+				}
+
+				// endcaps
+
+				If( positionGeometry.y.greaterThan( 1.0 ).or( positionGeometry.y.lessThan( 0.0 ) ), () => {
+
+					offset.assign( offset.add( vec3( dir.mul( 2.0 ).mul( forwardOffset ), 0 ) ) );
+
+				} );
+
+				// adjust for linewidth
+				offset.assign( offset.mul( materialLineWidth ).mul( 0.5 ) );
+
+				// set the world position
+
+				const worldPos = varying( vec4(), 'worldPos' );
+
+				worldPos.assign( positionGeometry.y.lessThan( 0.5 ).cond( start, end ) );
+				worldPos.assign( worldPos.add( vec4( offset, 0 ) ) );
+
+				// project the worldpos
+				clip.assign( cameraProjectionMatrix.mul( worldPos ) );
+
+				// shift the depth of the projected points so the line
+				// segments overlap neatly
+				const clipPose = temp( vec3() );
+
+				clipPose.assign( positionGeometry.y.lessThan( 0.5 ).cond( ndcStart, ndcEnd ) );
+				clip.z.assign( clipPose.z.mul( clip.w ) );
+
+			} else {
+
+				const offset = property( 'vec2', 'offset' );
+
+				offset.assign( vec2( dir.y, dir.x.negate() ) );
+
+				// undo aspect ratio adjustment
+				dir.x.assign( dir.x.div( aspect ) );
+				offset.x.assign( offset.x.div( aspect ) );
+
+				// sign flip
+				offset.assign( positionGeometry.x.lessThan( 0.0 ).cond( offset.negate(), offset ) );
+
+				// endcaps
+				If( positionGeometry.y.lessThan( 0.0 ), () => {
+
+					offset.assign( offset.sub( dir ) );
+
+				} ).elseif( positionGeometry.y.greaterThan( 1.0 ), () => {
+
+					offset.assign( offset.add( dir ) );
+
+				} );
+
+				// adjust for linewidth
+				offset.assign( offset.mul( materialLineWidth ) );
+
+				// adjust for clip-space to screen-space conversion // maybe resolution should be based on viewport ...
+				offset.assign( offset.div( viewport.w ) );
+
+				// select end
+				clip.assign( positionGeometry.y.lessThan( 0.5 ).cond( clipStart, clipEnd ) );
+
+				// back to clip space
+				offset.assign( offset.mul( clip.w ) );
+
+				clip.assign( clip.add( vec4( offset, 0, 0 ) ) );
+
+			}
+
+			return clip;
+
+		} )();
+
+		const closestLineToLine = tslFn( ( { p1, p2, p3, p4 } ) => {
+
+			const p13 = p1.sub( p3 );
+			const p43 = p4.sub( p3 );
+
+			const p21 = p2.sub( p1 );
+
+			const d1343 = p13.dot( p43 );
+			const d4321 = p43.dot( p21 );
+			const d1321 = p13.dot( p21 );
+			const d4343 = p43.dot( p43 );
+			const d2121 = p21.dot( p21 );
+
+			const denom = d2121.mul( d4343 ).sub( d4321.mul( d4321 ) );
+			const numer = d1343.mul( d4321 ).sub( d1321.mul( d4343 ) );
+
+			const mua = numer.div( denom ).clamp();
+			const mub = d1343.add( d4321.mul( mua ) ).div( d4343 ).clamp();
+
+			return vec2( mua, mub );
+
+		} );
+
+		this.colorNode = tslFn( () => {
+
+			const vUv = varying( vec2(), 'vUv' );
+
+			if ( useDash ) {
+
+				const offsetNode = this.offsetNode ? float( this.offsetNodeNode ) : materialLineDashOffset;
+				const dashScaleNode = this.dashScaleNode ? float( this.dashScaleNode ) : materialLineScale;
+				const dashSizeNode = this.dashSizeNode ? float( this.dashSizeNode ) : materialLineDashSize;
+				const gapSizeNode = this.dashSizeNode ? float( this.dashGapNode ) : materialLineGapSize;
+
+				dashSize.assign( dashSizeNode );
+				gapSize.assign( gapSizeNode );
+
+				const instanceDistanceStart = attribute( 'instanceDistanceStart' );
+				const instanceDistanceEnd = attribute( 'instanceDistanceEnd' );
+
+				const lineDistance = positionGeometry.y.lessThan( 0.5 ).cond( dashScaleNode.mul( instanceDistanceStart ), materialLineScale.mul( instanceDistanceEnd ) );
+
+				const vLineDistance = varying( lineDistance.add( materialLineDashOffset ) );
+				const vLineDistanceOffset = offsetNode ? vLineDistance.add( offsetNode ) : vLineDistance;
+
+				vUv.y.lessThan( - 1.0 ).or( vUv.y.greaterThan( 1.0 ) ).discard(); // discard endcaps
+				vLineDistanceOffset.mod( dashSize.add( gapSize ) ).greaterThan( dashSize ).discard(); // todo - FIX
+
+			}
+
+			 // force assignment into correct place in flow
+			const alpha = property( 'float', 'alpha' );
+			alpha.assign( 1 );
+
+			if ( useWorldUnits ) {
+
+				const worldStart = varying( vec3(), 'worldStart' );
+				const worldEnd = varying( vec3(), 'worldEnd' );
+
+				// Find the closest points on the view ray and the line segment
+				const rayEnd = varying( vec4(), 'worldPos' ).xyz.normalize().mul( 1e5 );
+				const lineDir = worldEnd.sub( worldStart );
+				const params = closestLineToLine( { p1: worldStart, p2: worldEnd, p3: vec3( 0.0, 0.0, 0.0 ), p4: rayEnd } );
+
+				const p1 = worldStart.add( lineDir.mul( params.x ) );
+				const p2 = rayEnd.mul( params.y );
+				const delta = p1.sub( p2 );
+				const len = delta.length();
+				const norm = len.div( materialLineWidth );
+
+				if ( ! useDash ) {
+
+					if ( useAlphaToCoverage ) {
+
+						const dnorm = norm.fwidth();
+						alpha.assign( smoothstep( dnorm.negate().add( 0.5 ), dnorm.add( 0.5 ), norm ).oneMinus() );
+
+					} else {
+
+						norm.greaterThan( 0.5 ).discard();
+
+					}
+
+				}
+
+			} else {
+
+				// round endcaps
+
+				if ( useAlphaToCoverage ) {
+
+					const a = vUv.x;
+					const b = vUv.y.greaterThan( 0.0 ).cond( vUv.y.sub( 1.0 ), vUv.y.add( 1.0 ) );
+
+					const len2 = a.mul( a ).add( b.mul( b ) );
+
+					// force assignment out of following 'if' statement - to avoid uniform control flow errors
+					const dlen = property( 'float', 'dlen' );
+					dlen.assign( len2.fwidth() );
+
+					If( vUv.y.abs().greaterThan( 1.0 ), () => {
+
+						alpha.assign( smoothstep( dlen.oneMinus(), dlen.add( 1 ), len2 ).oneMinus() );
+
+					} );
+
+				} else {
+
+					If( vUv.y.abs().greaterThan( 1.0 ), () => {
+
+						const a = vUv.x;
+						const b = vUv.y.greaterThan( 0.0 ).cond( vUv.y.sub( 1.0 ), vUv.y.add( 1.0 ) );
+						const len2 = a.mul( a ).add( b.mul( b ) );
+
+						len2.greaterThan( 1.0 ).discard();
+
+					} );
+
+				}
+
+			}
+
+			let lineColorNode;
+
+			if ( this.lineColorNode ) {
+
+				lineColorNode = this.lineColorNode;
+
+			} else {
+
+				if ( useColor ) {
+
+					const instanceColorStart = attribute( 'instanceColorStart' );
+					const instanceColorEnd = attribute( 'instanceColorEnd' );
+
+					const instanceColor = positionGeometry.y.lessThan( 0.5 ).cond( instanceColorStart, instanceColorEnd );
+
+					lineColorNode = instanceColor.mul( materialColor );
+
+				} else {
+
+					lineColorNode = materialColor;
+
+				}
+
+			}
+
+			return vec4( lineColorNode, alpha );
+
+		} )();
+
+		this.needsUpdate = true;
+
+	}
+
+
+	get worldUnits() {
+
+		return this.useWorldUnits;
+
+	}
+
+	set worldUnits( value ) {
+
+		if ( this.useWorldUnits !== value ) {
+
+			this.useWorldUnits = value;
+			this.setupShaders();
+
+		}
+
+	}
+
+
+	get dashed() {
+
+		return this.useDash;
+
+	}
+
+	set dashed( value ) {
+
+		if ( this.useDash !== value ) {
+
+			this.useDash = value;
+			this.setupShaders();
+
+		}
+
+	}
+
+
+	get alphaToCoverage() {
+
+		return this.useAlphaToCoverage;
+
+	}
+
+	set alphaToCoverage( value ) {
+
+		if ( this.useAlphaToCoverage !== value ) {
+
+			this.useAlphaToCoverage = value;
+			this.setupShaders();
+
+		}
+
+	}
+
+}
+
+export default Line2NodeMaterial;
+
+addNodeMaterial( 'Line2NodeMaterial', Line2NodeMaterial );