init

python

PCSurvey/libs/three.js/LICENSE

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+The MIT License
+
+Copyright © 2010-2014 three.js authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

PCSurvey/libs/three.js/README.md

@@ -0,0 +1,69 @@
+three.js
+========
+
+#### JavaScript 3D library ####
+
+The aim of the project is to create a lightweight 3D library with a very low level of complexity — in other words, for dummies. The library provides <canvas>, <svg>, CSS3D and WebGL renderers.
+
+[Examples](http://threejs.org/) — [Documentation](http://threejs.org/docs/) — [Migrating](https://github.com/mrdoob/three.js/wiki/Migration) — [Help](http://stackoverflow.com/questions/tagged/three.js)
+
+
+### Usage ###
+
+Download the [minified library](http://threejs.org/build/three.min.js) and include it in your html.
+Alternatively see [how to build the library yourself](https://github.com/mrdoob/three.js/wiki/build.py,-or-how-to-generate-a-compressed-Three.js-file).
+
+```html
+<script src="js/three.min.js"></script>
+```
+
+This code creates a scene, a camera, and a geometric cube, and it adds the cube to the scene. It then creates a &lt;canvas&gt; renderer for the scene and camera, and it adds that viewport to the document.body element. Finally it animates the cube within the scene for the camera.
+
+```html
+<script>
+
+	var scene, camera, renderer;
+	var geometry, material, mesh;
+
+	init();
+	animate();
+
+	function init() {
+
+		scene = new THREE.Scene();
+		
+		camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 10000 );
+		camera.position.z = 1000;
+
+		geometry = new THREE.BoxGeometry( 200, 200, 200 );
+		material = new THREE.MeshBasicMaterial( { color: 0xff0000, wireframe: true } );
+		mesh = new THREE.Mesh( geometry, material );
+		
+		scene.add( mesh );
+
+		renderer = new THREE.CanvasRenderer();
+		renderer.setSize( window.innerWidth, window.innerHeight );
+
+		document.body.appendChild( renderer.domElement );
+
+	}
+
+	function animate() {
+
+		// note: three.js includes requestAnimationFrame shim
+		requestAnimationFrame( animate );
+
+		mesh.rotation.x += 0.01;
+		mesh.rotation.y += 0.02;
+
+		renderer.render( scene, camera );
+
+	}
+
+</script>
+```
+If everything went well you should see [this](http://jsfiddle.net/Gy4w7/).
+
+### Change log ###
+
+[releases](https://github.com/mrdoob/three.js/releases)

PCSurvey/libs/three.js/extra/lines.js

@@ -0,0 +1,856 @@
+
+
+
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.LineSegmentsGeometry = function () {
+
+	THREE.InstancedBufferGeometry.call( this );
+
+	this.type = 'LineSegmentsGeometry';
+
+	var positions = [ - 1, 2, 0, 1, 2, 0, - 1, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 0, - 1, - 1, 0, 1, - 1, 0 ];
+	var uvs = [ - 1, 2, 1, 2, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 2, 1, - 2 ];
+	var index = [ 0, 2, 1, 2, 3, 1, 2, 4, 3, 4, 5, 3, 4, 6, 5, 6, 7, 5 ];
+
+	this.setIndex( index );
+	this.addAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
+	this.addAttribute( 'uv', new THREE.Float32BufferAttribute( uvs, 2 ) );
+
+};
+
+THREE.LineSegmentsGeometry.prototype = Object.assign( Object.create( THREE.InstancedBufferGeometry.prototype ), {
+
+	constructor: THREE.LineSegmentsGeometry,
+
+	isLineSegmentsGeometry: true,
+
+	applyMatrix: function ( matrix ) {
+
+		var start = this.attributes.instanceStart;
+		var end = this.attributes.instanceEnd;
+
+		if ( start !== undefined ) {
+
+			matrix.applyToBufferAttribute( start );
+
+			matrix.applyToBufferAttribute( end );
+
+			start.data.needsUpdate = true;
+
+		}
+
+		if ( this.boundingBox !== null ) {
+
+			this.computeBoundingBox();
+
+		}
+
+		if ( this.boundingSphere !== null ) {
+
+			this.computeBoundingSphere();
+
+		}
+
+		return this;
+
+	},
+
+	setPositions: function ( array ) {
+
+		var lineSegments;
+
+		if ( array instanceof Float32Array ) {
+
+			lineSegments = array;
+
+		} else if ( Array.isArray( array ) ) {
+
+			lineSegments = new Float32Array( array );
+
+		}
+
+		var instanceBuffer = new THREE.InstancedInterleavedBuffer( lineSegments, 6, 1 ); // xyz, xyz
+
+		this.addAttribute( 'instanceStart', new THREE.InterleavedBufferAttribute( instanceBuffer, 3, 0 ) ); // xyz
+		this.addAttribute( 'instanceEnd', new THREE.InterleavedBufferAttribute( instanceBuffer, 3, 3 ) ); // xyz
+
+		//
+
+		this.computeBoundingBox();
+		this.computeBoundingSphere();
+
+		return this;
+
+	},
+
+	setColors: function ( array ) {
+
+		var colors;
+
+		if ( array instanceof Float32Array ) {
+
+			colors = array;
+
+		} else if ( Array.isArray( array ) ) {
+
+			colors = new Float32Array( array );
+
+		}
+
+		var instanceColorBuffer = new THREE.InstancedInterleavedBuffer( colors, 6, 1 ); // rgb, rgb
+
+		this.addAttribute( 'instanceColorStart', new THREE.InterleavedBufferAttribute( instanceColorBuffer, 3, 0 ) ); // rgb
+		this.addAttribute( 'instanceColorEnd', new THREE.InterleavedBufferAttribute( instanceColorBuffer, 3, 3 ) ); // rgb
+
+		return this;
+
+	},
+
+	fromWireframeGeometry: function ( geometry ) {
+
+		this.setPositions( geometry.attributes.position.array );
+
+		return this;
+
+	},
+
+	fromEdgesGeometry: function ( geometry ) {
+
+		this.setPositions( geometry.attributes.position.array );
+
+		return this;
+
+	},
+
+	fromMesh: function ( mesh ) {
+
+		this.fromWireframeGeometry( new THREE.WireframeGeometry( mesh.geometry ) );
+
+		// set colors, maybe
+
+		return this;
+
+	},
+
+	fromLineSegements: function ( lineSegments ) {
+
+		var geometry = lineSegments.geometry;
+
+		if ( geometry.isGeometry ) {
+
+			this.setPositions( geometry.vertices );
+
+		} else if ( geometry.isBufferGeometry ) {
+
+			this.setPositions( geometry.position.array ); // assumes non-indexed
+
+		}
+
+		// set colors, maybe
+
+		return this;
+
+	},
+
+	computeBoundingBox: function () {
+
+		var box = new THREE.Box3();
+
+		return function computeBoundingBox() {
+
+			if ( this.boundingBox === null ) {
+
+				this.boundingBox = new THREE.Box3();
+
+			}
+
+			var start = this.attributes.instanceStart;
+			var end = this.attributes.instanceEnd;
+
+			if ( start !== undefined && end !== undefined ) {
+
+				this.boundingBox.setFromBufferAttribute( start );
+
+				box.setFromBufferAttribute( end );
+
+				this.boundingBox.union( box );
+
+			}
+
+		};
+
+	}(),
+
+	computeBoundingSphere: function () {
+
+		var vector = new THREE.Vector3();
+
+		return function computeBoundingSphere() {
+
+			if ( this.boundingSphere === null ) {
+
+				this.boundingSphere = new THREE.Sphere();
+
+			}
+
+			if ( this.boundingBox === null ) {
+
+				this.computeBoundingBox();
+
+			}
+
+			var start = this.attributes.instanceStart;
+			var end = this.attributes.instanceEnd;
+
+			if ( start !== undefined && end !== undefined ) {
+
+				var center = this.boundingSphere.center;
+
+				this.boundingBox.getCenter( center );
+
+				var maxRadiusSq = 0;
+
+				for ( var i = 0, il = start.count; i < il; i ++ ) {
+
+					vector.fromBufferAttribute( start, i );
+					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );
+
+					vector.fromBufferAttribute( end, i );
+					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );
+
+				}
+
+				this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+
+				if ( isNaN( this.boundingSphere.radius ) ) {
+
+					console.error( 'THREE.LineSegmentsGeometry.computeBoundingSphere(): Computed radius is NaN. The instanced position data is likely to have NaN values.', this );
+
+				}
+
+			}
+
+		};
+
+	}(),
+
+	toJSON: function () {
+
+		// todo
+
+	},
+
+	clone: function () {
+
+		// todo
+
+	},
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );
+
+
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.LineSegments2 = function ( geometry, material ) {
+
+	THREE.Mesh.call( this );
+
+	this.type = 'LineSegments2';
+
+	this.geometry = geometry !== undefined ? geometry : new THREE.LineSegmentsGeometry();
+	this.material = material !== undefined ? material : new THREE.LineMaterial( { color: Math.random() * 0xffffff } );
+
+};
+
+THREE.LineSegments2.prototype = Object.assign( Object.create( THREE.Mesh.prototype ), {
+
+	constructor: THREE.LineSegments2,
+
+	isLineSegments2: true,
+
+	computeLineDistances: ( function () { // for backwards-compatability, but could be a method of LineSegmentsGeometry...
+
+		var start = new THREE.Vector3();
+		var end = new THREE.Vector3();
+
+		return function computeLineDistances() {
+
+			var geometry = this.geometry;
+
+			var instanceStart = geometry.attributes.instanceStart;
+			var instanceEnd = geometry.attributes.instanceEnd;
+			var lineDistances = new Float32Array( 2 * instanceStart.data.count );
+
+			for ( var i = 0, j = 0, l = instanceStart.data.count; i < l; i ++, j += 2 ) {
+
+				start.fromBufferAttribute( instanceStart, i );
+				end.fromBufferAttribute( instanceEnd, i );
+
+				lineDistances[ j ] = ( j === 0 ) ? 0 : lineDistances[ j - 1 ];
+				lineDistances[ j + 1 ] = lineDistances[ j ] + start.distanceTo( end );
+
+			}
+
+			var instanceDistanceBuffer = new THREE.InstancedInterleavedBuffer( lineDistances, 2, 1 ); // d0, d1
+
+			geometry.addAttribute( 'instanceDistanceStart', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 0 ) ); // d0
+			geometry.addAttribute( 'instanceDistanceEnd', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 1 ) ); // d1
+
+			return this;
+
+		};
+
+	}() ),
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );
+
+
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ * parameters = {
+ *  color: <hex>,
+ *  linewidth: <float>,
+ *  dashed: <boolean>,
+ *  dashScale: <float>,
+ *  dashSize: <float>,
+ *  gapSize: <float>,
+ *  resolution: <Vector2>, // to be set by renderer
+ * }
+ */
+
+THREE.UniformsLib.line = {
+
+	linewidth: { value: 1 },
+	resolution: { value: new THREE.Vector2( 1, 1 ) },
+	dashScale: { value: 1 },
+	dashSize: { value: 1 },
+	gapSize: { value: 1 } // todo FIX - maybe change to totalSize
+
+};
+
+THREE.ShaderLib[ 'line' ] = {
+
+	uniforms: THREE.UniformsUtils.merge( [
+		THREE.UniformsLib.common,
+		THREE.UniformsLib.fog,
+		THREE.UniformsLib.line
+	] ),
+
+	vertexShader:
+		`
+		#include <common>
+		#include <color_pars_vertex>
+		#include <fog_pars_vertex>
+		#include <logdepthbuf_pars_vertex>
+		#include <clipping_planes_pars_vertex>
+
+		uniform float linewidth;
+		uniform vec2 resolution;
+
+		attribute vec3 instanceStart;
+		attribute vec3 instanceEnd;
+
+		attribute vec3 instanceColorStart;
+		attribute vec3 instanceColorEnd;
+
+		varying vec2 vUv;
+
+		#ifdef USE_DASH
+
+			uniform float dashScale;
+			attribute float instanceDistanceStart;
+			attribute float instanceDistanceEnd;
+			varying float vLineDistance;
+
+		#endif
+
+		void trimSegment( const in vec4 start, inout vec4 end ) {
+
+			// trim end segment so it terminates between the camera plane and the near plane
+
+			// conservative estimate of the near plane
+			float a = projectionMatrix[ 2 ][ 2 ]; // 3nd entry in 3th column
+			float b = projectionMatrix[ 3 ][ 2 ]; // 3nd entry in 4th column
+			float nearEstimate = - 0.5 * b / a;
+
+			float alpha = ( nearEstimate - start.z ) / ( end.z - start.z );
+
+			end.xyz = mix( start.xyz, end.xyz, alpha );
+
+		}
+
+		void main() {
+
+			#ifdef USE_COLOR
+
+				vColor.xyz = ( position.y < 0.5 ) ? instanceColorStart : instanceColorEnd;
+
+			#endif
+
+			#ifdef USE_DASH
+
+				vLineDistance = ( position.y < 0.5 ) ? dashScale * instanceDistanceStart : dashScale * instanceDistanceEnd;
+
+			#endif
+
+			float aspect = resolution.x / resolution.y;
+
+			vUv = uv;
+
+			// camera space
+			vec4 start = modelViewMatrix * vec4( instanceStart, 1.0 );
+			vec4 end = modelViewMatrix * vec4( instanceEnd, 1.0 );
+
+			// 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
+
+			bool perspective = ( projectionMatrix[ 2 ][ 3 ] == - 1.0 ); // 4th entry in the 3rd column
+
+			if ( perspective ) {
+
+				if ( start.z < 0.0 && end.z >= 0.0 ) {
+
+					trimSegment( start, end );
+
+				} else if ( end.z < 0.0 && start.z >= 0.0 ) {
+
+					trimSegment( end, start );
+
+				}
+
+			}
+
+			// clip space
+			vec4 clipStart = projectionMatrix * start;
+			vec4 clipEnd = projectionMatrix * end;
+
+			// ndc space
+			vec2 ndcStart = clipStart.xy / clipStart.w;
+			vec2 ndcEnd = clipEnd.xy / clipEnd.w;
+
+			// direction
+			vec2 dir = ndcEnd - ndcStart;
+
+			// account for clip-space aspect ratio
+			dir.x *= aspect;
+			dir = normalize( dir );
+
+			// perpendicular to dir
+			vec2 offset = vec2( dir.y, - dir.x );
+
+			// undo aspect ratio adjustment
+			dir.x /= aspect;
+			offset.x /= aspect;
+
+			// sign flip
+			if ( position.x < 0.0 ) offset *= - 1.0;
+
+			// endcaps
+			if ( position.y < 0.0 ) {
+
+				offset += - dir;
+
+			} else if ( position.y > 1.0 ) {
+
+				offset += dir;
+
+			}
+
+			// adjust for linewidth
+			offset *= linewidth;
+
+			// adjust for clip-space to screen-space conversion // maybe resolution should be based on viewport ...
+			offset /= resolution.y;
+
+			// select end
+			vec4 clip = ( position.y < 0.5 ) ? clipStart : clipEnd;
+
+			// back to clip space
+			offset *= clip.w;
+
+			clip.xy += offset;
+
+			gl_Position = clip;
+
+			vec4 mvPosition = ( position.y < 0.5 ) ? start : end; // this is an approximation
+
+			#include <logdepthbuf_vertex>
+			#include <clipping_planes_vertex>
+			#include <fog_vertex>
+
+		}
+		`,
+
+	fragmentShader:
+		`
+		uniform vec3 diffuse;
+		uniform float opacity;
+
+		#ifdef USE_DASH
+
+			uniform float dashSize;
+			uniform float gapSize;
+
+		#endif
+
+		varying float vLineDistance;
+
+		#include <common>
+		#include <color_pars_fragment>
+		#include <fog_pars_fragment>
+		#include <logdepthbuf_pars_fragment>
+		#include <clipping_planes_pars_fragment>
+
+		varying vec2 vUv;
+
+		void main() {
+
+			#include <clipping_planes_fragment>
+
+			#ifdef USE_DASH
+
+				if ( vUv.y < - 1.0 || vUv.y > 1.0 ) discard; // discard endcaps
+
+				if ( mod( vLineDistance, dashSize + gapSize ) > dashSize ) discard; // todo - FIX
+
+			#endif
+
+			if ( abs( vUv.y ) > 1.0 ) {
+
+				float a = vUv.x;
+				float b = ( vUv.y > 0.0 ) ? vUv.y - 1.0 : vUv.y + 1.0;
+				float len2 = a * a + b * b;
+
+				if ( len2 > 1.0 ) discard;
+
+			}
+
+			vec4 diffuseColor = vec4( diffuse, opacity );
+
+			#include <logdepthbuf_fragment>
+			#include <color_fragment>
+
+			gl_FragColor = vec4( diffuseColor.rgb, diffuseColor.a );
+
+			#include <premultiplied_alpha_fragment>
+			#include <tonemapping_fragment>
+			#include <encodings_fragment>
+			#include <fog_fragment>
+
+		}
+		`
+};
+
+THREE.LineMaterial = function ( parameters ) {
+
+	THREE.ShaderMaterial.call( this, {
+
+		type: 'LineMaterial',
+
+		uniforms: THREE.UniformsUtils.clone( THREE.ShaderLib[ 'line' ].uniforms ),
+
+		vertexShader: THREE.ShaderLib[ 'line' ].vertexShader,
+		fragmentShader: THREE.ShaderLib[ 'line' ].fragmentShader
+
+	} );
+
+	this.dashed = false;
+
+	Object.defineProperties( this, {
+
+		color: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.diffuse.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.diffuse.value = value;
+
+			}
+
+		},
+
+		linewidth: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.linewidth.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.linewidth.value = value;
+
+			}
+
+		},
+
+		dashScale: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.dashScale.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.dashScale.value = value;
+
+			}
+
+		},
+
+		dashSize: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.dashSize.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.dashSize.value = value;
+
+			}
+
+		},
+
+		gapSize: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.gapSize.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.gapSize.value = value;
+
+			}
+
+		},
+
+		resolution: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.resolution.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.resolution.value.copy( value );
+
+			}
+
+		}
+
+	} );
+
+	this.setValues( parameters );
+
+};
+
+THREE.LineMaterial.prototype = Object.create( THREE.ShaderMaterial.prototype );
+THREE.LineMaterial.prototype.constructor = THREE.LineMaterial;
+
+THREE.LineMaterial.prototype.isLineMaterial = true;
+
+THREE.LineMaterial.prototype.copy = function ( source ) {
+
+	THREE.ShaderMaterial.prototype.copy.call( this, source );
+
+	this.color.copy( source.color );
+
+	this.linewidth = source.linewidth;
+
+	this.resolution = source.resolution;
+
+	// todo
+
+	return this;
+
+};
+
+
+
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.LineGeometry = function () {
+
+	THREE.LineSegmentsGeometry.call( this );
+
+	this.type = 'LineGeometry';
+
+};
+
+THREE.LineGeometry.prototype = Object.assign( Object.create( THREE.LineSegmentsGeometry.prototype ), {
+
+	constructor: THREE.LineGeometry,
+
+	isLineGeometry: true,
+
+	setPositions: function ( array ) {
+
+		// converts [ x1, y1, z1,  x2, y2, z2, ... ] to pairs format
+
+		var length = array.length - 3;
+		var points = new Float32Array( 2 * length );
+
+		for ( var i = 0; i < length; i += 3 ) {
+
+			points[ 2 * i ] = array[ i ];
+			points[ 2 * i + 1 ] = array[ i + 1 ];
+			points[ 2 * i + 2 ] = array[ i + 2 ];
+
+			points[ 2 * i + 3 ] = array[ i + 3 ];
+			points[ 2 * i + 4 ] = array[ i + 4 ];
+			points[ 2 * i + 5 ] = array[ i + 5 ];
+
+		}
+
+		THREE.LineSegmentsGeometry.prototype.setPositions.call( this, points );
+
+		return this;
+
+	},
+
+	setColors: function ( array ) {
+
+		// converts [ r1, g1, b1,  r2, g2, b2, ... ] to pairs format
+
+		var length = array.length - 3;
+		var colors = new Float32Array( 2 * length );
+
+		for ( var i = 0; i < length; i += 3 ) {
+
+			colors[ 2 * i ] = array[ i ];
+			colors[ 2 * i + 1 ] = array[ i + 1 ];
+			colors[ 2 * i + 2 ] = array[ i + 2 ];
+
+			colors[ 2 * i + 3 ] = array[ i + 3 ];
+			colors[ 2 * i + 4 ] = array[ i + 4 ];
+			colors[ 2 * i + 5 ] = array[ i + 5 ];
+
+		}
+
+		THREE.LineSegmentsGeometry.prototype.setColors.call( this, colors );
+
+		return this;
+
+	},
+
+	fromLine: function ( line ) {
+
+		var geometry = line.geometry;
+
+		if ( geometry.isGeometry ) {
+
+			this.setPositions( geometry.vertices );
+
+		} else if ( geometry.isBufferGeometry ) {
+
+			this.setPositions( geometry.position.array ); // assumes non-indexed
+
+		}
+
+		// set colors, maybe
+
+		return this;
+
+	},
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );
+
+
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.Line2 = function ( geometry, material ) {
+
+	THREE.LineSegments2.call( this );
+
+	this.type = 'Line2';
+
+	this.geometry = geometry !== undefined ? geometry : new THREE.LineGeometry();
+	this.material = material !== undefined ? material : new THREE.LineMaterial( { color: Math.random() * 0xffffff } );
+
+};
+
+THREE.Line2.prototype = Object.assign( Object.create( THREE.LineSegments2.prototype ), {
+
+	constructor: THREE.Line2,
+
+	isLine2: true,
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );
+
+

PCSurvey/libs/three.js/extra/lines/Line2.js

@@ -0,0 +1,31 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.Line2 = function ( geometry, material ) {
+
+	THREE.LineSegments2.call( this );
+
+	this.type = 'Line2';
+
+	this.geometry = geometry !== undefined ? geometry : new THREE.LineGeometry();
+	this.material = material !== undefined ? material : new THREE.LineMaterial( { color: Math.random() * 0xffffff } );
+
+};
+
+THREE.Line2.prototype = Object.assign( Object.create( THREE.LineSegments2.prototype ), {
+
+	constructor: THREE.Line2,
+
+	isLine2: true,
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );

PCSurvey/libs/three.js/extra/lines/LineGeometry.js

@@ -0,0 +1,98 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.LineGeometry = function () {
+
+	THREE.LineSegmentsGeometry.call( this );
+
+	this.type = 'LineGeometry';
+
+};
+
+THREE.LineGeometry.prototype = Object.assign( Object.create( THREE.LineSegmentsGeometry.prototype ), {
+
+	constructor: THREE.LineGeometry,
+
+	isLineGeometry: true,
+
+	setPositions: function ( array ) {
+
+		// converts [ x1, y1, z1,  x2, y2, z2, ... ] to pairs format
+
+		var length = array.length - 3;
+		var points = new Float32Array( 2 * length );
+
+		for ( var i = 0; i < length; i += 3 ) {
+
+			points[ 2 * i ] = array[ i ];
+			points[ 2 * i + 1 ] = array[ i + 1 ];
+			points[ 2 * i + 2 ] = array[ i + 2 ];
+
+			points[ 2 * i + 3 ] = array[ i + 3 ];
+			points[ 2 * i + 4 ] = array[ i + 4 ];
+			points[ 2 * i + 5 ] = array[ i + 5 ];
+
+		}
+
+		THREE.LineSegmentsGeometry.prototype.setPositions.call( this, points );
+
+		return this;
+
+	},
+
+	setColors: function ( array ) {
+
+		// converts [ r1, g1, b1,  r2, g2, b2, ... ] to pairs format
+
+		var length = array.length - 3;
+		var colors = new Float32Array( 2 * length );
+
+		for ( var i = 0; i < length; i += 3 ) {
+
+			colors[ 2 * i ] = array[ i ];
+			colors[ 2 * i + 1 ] = array[ i + 1 ];
+			colors[ 2 * i + 2 ] = array[ i + 2 ];
+
+			colors[ 2 * i + 3 ] = array[ i + 3 ];
+			colors[ 2 * i + 4 ] = array[ i + 4 ];
+			colors[ 2 * i + 5 ] = array[ i + 5 ];
+
+		}
+
+		THREE.LineSegmentsGeometry.prototype.setColors.call( this, colors );
+
+		return this;
+
+	},
+
+	fromLine: function ( line ) {
+
+		var geometry = line.geometry;
+
+		if ( geometry.isGeometry ) {
+
+			this.setPositions( geometry.vertices );
+
+		} else if ( geometry.isBufferGeometry ) {
+
+			this.setPositions( geometry.position.array ); // assumes non-indexed
+
+		}
+
+		// set colors, maybe
+
+		return this;
+
+	},
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );

PCSurvey/libs/three.js/extra/lines/LineMaterial.js

@@ -0,0 +1,391 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ * parameters = {
+ *  color: <hex>,
+ *  linewidth: <float>,
+ *  dashed: <boolean>,
+ *  dashScale: <float>,
+ *  dashSize: <float>,
+ *  gapSize: <float>,
+ *  resolution: <Vector2>, // to be set by renderer
+ * }
+ */
+
+THREE.UniformsLib.line = {
+
+	linewidth: { value: 1 },
+	resolution: { value: new THREE.Vector2( 1, 1 ) },
+	dashScale: { value: 1 },
+	dashSize: { value: 1 },
+	gapSize: { value: 1 } // todo FIX - maybe change to totalSize
+
+};
+
+THREE.ShaderLib[ 'line' ] = {
+
+	uniforms: THREE.UniformsUtils.merge( [
+		THREE.UniformsLib.common,
+		THREE.UniformsLib.fog,
+		THREE.UniformsLib.line
+	] ),
+
+	vertexShader:
+		`
+		#include <common>
+		#include <color_pars_vertex>
+		#include <fog_pars_vertex>
+		#include <logdepthbuf_pars_vertex>
+		#include <clipping_planes_pars_vertex>
+
+		uniform float linewidth;
+		uniform vec2 resolution;
+
+		attribute vec3 instanceStart;
+		attribute vec3 instanceEnd;
+
+		attribute vec3 instanceColorStart;
+		attribute vec3 instanceColorEnd;
+
+		varying vec2 vUv;
+
+		#ifdef USE_DASH
+
+			uniform float dashScale;
+			attribute float instanceDistanceStart;
+			attribute float instanceDistanceEnd;
+			varying float vLineDistance;
+
+		#endif
+
+		void trimSegment( const in vec4 start, inout vec4 end ) {
+
+			// trim end segment so it terminates between the camera plane and the near plane
+
+			// conservative estimate of the near plane
+			float a = projectionMatrix[ 2 ][ 2 ]; // 3nd entry in 3th column
+			float b = projectionMatrix[ 3 ][ 2 ]; // 3nd entry in 4th column
+			float nearEstimate = - 0.5 * b / a;
+
+			float alpha = ( nearEstimate - start.z ) / ( end.z - start.z );
+
+			end.xyz = mix( start.xyz, end.xyz, alpha );
+
+		}
+
+		void main() {
+
+			#ifdef USE_COLOR
+
+				vColor.xyz = ( position.y < 0.5 ) ? instanceColorStart : instanceColorEnd;
+
+			#endif
+
+			#ifdef USE_DASH
+
+				vLineDistance = ( position.y < 0.5 ) ? dashScale * instanceDistanceStart : dashScale * instanceDistanceEnd;
+
+			#endif
+
+			float aspect = resolution.x / resolution.y;
+
+			vUv = uv;
+
+			// camera space
+			vec4 start = modelViewMatrix * vec4( instanceStart, 1.0 );
+			vec4 end = modelViewMatrix * vec4( instanceEnd, 1.0 );
+
+			// 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
+
+			bool perspective = ( projectionMatrix[ 2 ][ 3 ] == - 1.0 ); // 4th entry in the 3rd column
+
+			if ( perspective ) {
+
+				if ( start.z < 0.0 && end.z >= 0.0 ) {
+
+					trimSegment( start, end );
+
+				} else if ( end.z < 0.0 && start.z >= 0.0 ) {
+
+					trimSegment( end, start );
+
+				}
+
+			}
+
+			// clip space
+			vec4 clipStart = projectionMatrix * start;
+			vec4 clipEnd = projectionMatrix * end;
+
+			// ndc space
+			vec2 ndcStart = clipStart.xy / clipStart.w;
+			vec2 ndcEnd = clipEnd.xy / clipEnd.w;
+
+			// direction
+			vec2 dir = ndcEnd - ndcStart;
+
+			// account for clip-space aspect ratio
+			dir.x *= aspect;
+			dir = normalize( dir );
+
+			// perpendicular to dir
+			vec2 offset = vec2( dir.y, - dir.x );
+
+			// undo aspect ratio adjustment
+			dir.x /= aspect;
+			offset.x /= aspect;
+
+			// sign flip
+			if ( position.x < 0.0 ) offset *= - 1.0;
+
+			// endcaps
+			if ( position.y < 0.0 ) {
+
+				offset += - dir;
+
+			} else if ( position.y > 1.0 ) {
+
+				offset += dir;
+
+			}
+
+			// adjust for linewidth
+			offset *= linewidth;
+
+			// adjust for clip-space to screen-space conversion // maybe resolution should be based on viewport ...
+			offset /= resolution.y;
+
+			// select end
+			vec4 clip = ( position.y < 0.5 ) ? clipStart : clipEnd;
+
+			// back to clip space
+			offset *= clip.w;
+
+			clip.xy += offset;
+
+			gl_Position = clip;
+
+			vec4 mvPosition = ( position.y < 0.5 ) ? start : end; // this is an approximation
+
+			#include <logdepthbuf_vertex>
+			#include <clipping_planes_vertex>
+			#include <fog_vertex>
+
+		}
+		`,
+
+	fragmentShader:
+		`
+		uniform vec3 diffuse;
+		uniform float opacity;
+
+		#ifdef USE_DASH
+
+			uniform float dashSize;
+			uniform float gapSize;
+
+		#endif
+
+		varying float vLineDistance;
+
+		#include <common>
+		#include <color_pars_fragment>
+		#include <fog_pars_fragment>
+		#include <logdepthbuf_pars_fragment>
+		#include <clipping_planes_pars_fragment>
+
+		varying vec2 vUv;
+
+		void main() {
+
+			#include <clipping_planes_fragment>
+
+			#ifdef USE_DASH
+
+				if ( vUv.y < - 1.0 || vUv.y > 1.0 ) discard; // discard endcaps
+
+				if ( mod( vLineDistance, dashSize + gapSize ) > dashSize ) discard; // todo - FIX
+
+			#endif
+
+			if ( abs( vUv.y ) > 1.0 ) {
+
+				float a = vUv.x;
+				float b = ( vUv.y > 0.0 ) ? vUv.y - 1.0 : vUv.y + 1.0;
+				float len2 = a * a + b * b;
+
+				if ( len2 > 1.0 ) discard;
+
+			}
+
+			vec4 diffuseColor = vec4( diffuse, opacity );
+
+			#include <logdepthbuf_fragment>
+			#include <color_fragment>
+
+			gl_FragColor = vec4( diffuseColor.rgb, diffuseColor.a );
+
+			#include <premultiplied_alpha_fragment>
+			#include <tonemapping_fragment>
+			#include <encodings_fragment>
+			#include <fog_fragment>
+
+		}
+		`
+};
+
+THREE.LineMaterial = function ( parameters ) {
+
+	THREE.ShaderMaterial.call( this, {
+
+		type: 'LineMaterial',
+
+		uniforms: THREE.UniformsUtils.clone( THREE.ShaderLib[ 'line' ].uniforms ),
+
+		vertexShader: THREE.ShaderLib[ 'line' ].vertexShader,
+		fragmentShader: THREE.ShaderLib[ 'line' ].fragmentShader
+
+	} );
+
+	this.dashed = false;
+
+	Object.defineProperties( this, {
+
+		color: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.diffuse.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.diffuse.value = value;
+
+			}
+
+		},
+
+		linewidth: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.linewidth.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.linewidth.value = value;
+
+			}
+
+		},
+
+		dashScale: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.dashScale.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.dashScale.value = value;
+
+			}
+
+		},
+
+		dashSize: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.dashSize.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.dashSize.value = value;
+
+			}
+
+		},
+
+		gapSize: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.gapSize.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.gapSize.value = value;
+
+			}
+
+		},
+
+		resolution: {
+
+			enumerable: true,
+
+			get: function () {
+
+				return this.uniforms.resolution.value;
+
+			},
+
+			set: function ( value ) {
+
+				this.uniforms.resolution.value.copy( value );
+
+			}
+
+		}
+
+	} );
+
+	this.setValues( parameters );
+
+};
+
+THREE.LineMaterial.prototype = Object.create( THREE.ShaderMaterial.prototype );
+THREE.LineMaterial.prototype.constructor = THREE.LineMaterial;
+
+THREE.LineMaterial.prototype.isLineMaterial = true;
+
+THREE.LineMaterial.prototype.copy = function ( source ) {
+
+	THREE.ShaderMaterial.prototype.copy.call( this, source );
+
+	this.color.copy( source.color );
+
+	this.linewidth = source.linewidth;
+
+	this.resolution = source.resolution;
+
+	// todo
+
+	return this;
+
+};
+

PCSurvey/libs/three.js/extra/lines/LineSegments2.js

@@ -0,0 +1,65 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.LineSegments2 = function ( geometry, material ) {
+
+	THREE.Mesh.call( this );
+
+	this.type = 'LineSegments2';
+
+	this.geometry = geometry !== undefined ? geometry : new THREE.LineSegmentsGeometry();
+	this.material = material !== undefined ? material : new THREE.LineMaterial( { color: Math.random() * 0xffffff } );
+
+};
+
+THREE.LineSegments2.prototype = Object.assign( Object.create( THREE.Mesh.prototype ), {
+
+	constructor: THREE.LineSegments2,
+
+	isLineSegments2: true,
+
+	computeLineDistances: ( function () { // for backwards-compatability, but could be a method of LineSegmentsGeometry...
+
+		var start = new THREE.Vector3();
+		var end = new THREE.Vector3();
+
+		return function computeLineDistances() {
+
+			var geometry = this.geometry;
+
+			var instanceStart = geometry.attributes.instanceStart;
+			var instanceEnd = geometry.attributes.instanceEnd;
+			var lineDistances = new Float32Array( 2 * instanceStart.data.count );
+
+			for ( var i = 0, j = 0, l = instanceStart.data.count; i < l; i ++, j += 2 ) {
+
+				start.fromBufferAttribute( instanceStart, i );
+				end.fromBufferAttribute( instanceEnd, i );
+
+				lineDistances[ j ] = ( j === 0 ) ? 0 : lineDistances[ j - 1 ];
+				lineDistances[ j + 1 ] = lineDistances[ j ] + start.distanceTo( end );
+
+			}
+
+			var instanceDistanceBuffer = new THREE.InstancedInterleavedBuffer( lineDistances, 2, 1 ); // d0, d1
+
+			geometry.addAttribute( 'instanceDistanceStart', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 0 ) ); // d0
+			geometry.addAttribute( 'instanceDistanceEnd', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 1 ) ); // d1
+
+			return this;
+
+		};
+
+	}() ),
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );

PCSurvey/libs/three.js/extra/lines/LineSegmentsGeometry.js

@@ -0,0 +1,258 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.LineSegmentsGeometry = function () {
+
+	THREE.InstancedBufferGeometry.call( this );
+
+	this.type = 'LineSegmentsGeometry';
+
+	var positions = [ - 1, 2, 0, 1, 2, 0, - 1, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 0, - 1, - 1, 0, 1, - 1, 0 ];
+	var uvs = [ - 1, 2, 1, 2, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 2, 1, - 2 ];
+	var index = [ 0, 2, 1, 2, 3, 1, 2, 4, 3, 4, 5, 3, 4, 6, 5, 6, 7, 5 ];
+
+	this.setIndex( index );
+	this.addAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
+	this.addAttribute( 'uv', new THREE.Float32BufferAttribute( uvs, 2 ) );
+
+};
+
+THREE.LineSegmentsGeometry.prototype = Object.assign( Object.create( THREE.InstancedBufferGeometry.prototype ), {
+
+	constructor: THREE.LineSegmentsGeometry,
+
+	isLineSegmentsGeometry: true,
+
+	applyMatrix: function ( matrix ) {
+
+		var start = this.attributes.instanceStart;
+		var end = this.attributes.instanceEnd;
+
+		if ( start !== undefined ) {
+
+			matrix.applyToBufferAttribute( start );
+
+			matrix.applyToBufferAttribute( end );
+
+			start.data.needsUpdate = true;
+
+		}
+
+		if ( this.boundingBox !== null ) {
+
+			this.computeBoundingBox();
+
+		}
+
+		if ( this.boundingSphere !== null ) {
+
+			this.computeBoundingSphere();
+
+		}
+
+		return this;
+
+	},
+
+	setPositions: function ( array ) {
+
+		var lineSegments;
+
+		if ( array instanceof Float32Array ) {
+
+			lineSegments = array;
+
+		} else if ( Array.isArray( array ) ) {
+
+			lineSegments = new Float32Array( array );
+
+		}
+
+		var instanceBuffer = new THREE.InstancedInterleavedBuffer( lineSegments, 6, 1 ); // xyz, xyz
+
+		this.addAttribute( 'instanceStart', new THREE.InterleavedBufferAttribute( instanceBuffer, 3, 0 ) ); // xyz
+		this.addAttribute( 'instanceEnd', new THREE.InterleavedBufferAttribute( instanceBuffer, 3, 3 ) ); // xyz
+
+		//
+
+		this.computeBoundingBox();
+		this.computeBoundingSphere();
+
+		return this;
+
+	},
+
+	setColors: function ( array ) {
+
+		var colors;
+
+		if ( array instanceof Float32Array ) {
+
+			colors = array;
+
+		} else if ( Array.isArray( array ) ) {
+
+			colors = new Float32Array( array );
+
+		}
+
+		var instanceColorBuffer = new THREE.InstancedInterleavedBuffer( colors, 6, 1 ); // rgb, rgb
+
+		this.addAttribute( 'instanceColorStart', new THREE.InterleavedBufferAttribute( instanceColorBuffer, 3, 0 ) ); // rgb
+		this.addAttribute( 'instanceColorEnd', new THREE.InterleavedBufferAttribute( instanceColorBuffer, 3, 3 ) ); // rgb
+
+		return this;
+
+	},
+
+	fromWireframeGeometry: function ( geometry ) {
+
+		this.setPositions( geometry.attributes.position.array );
+
+		return this;
+
+	},
+
+	fromEdgesGeometry: function ( geometry ) {
+
+		this.setPositions( geometry.attributes.position.array );
+
+		return this;
+
+	},
+
+	fromMesh: function ( mesh ) {
+
+		this.fromWireframeGeometry( new THREE.WireframeGeometry( mesh.geometry ) );
+
+		// set colors, maybe
+
+		return this;
+
+	},
+
+	fromLineSegements: function ( lineSegments ) {
+
+		var geometry = lineSegments.geometry;
+
+		if ( geometry.isGeometry ) {
+
+			this.setPositions( geometry.vertices );
+
+		} else if ( geometry.isBufferGeometry ) {
+
+			this.setPositions( geometry.position.array ); // assumes non-indexed
+
+		}
+
+		// set colors, maybe
+
+		return this;
+
+	},
+
+	computeBoundingBox: function () {
+
+		var box = new THREE.Box3();
+
+		return function computeBoundingBox() {
+
+			if ( this.boundingBox === null ) {
+
+				this.boundingBox = new THREE.Box3();
+
+			}
+
+			var start = this.attributes.instanceStart;
+			var end = this.attributes.instanceEnd;
+
+			if ( start !== undefined && end !== undefined ) {
+
+				this.boundingBox.setFromBufferAttribute( start );
+
+				box.setFromBufferAttribute( end );
+
+				this.boundingBox.union( box );
+
+			}
+
+		};
+
+	}(),
+
+	computeBoundingSphere: function () {
+
+		var vector = new THREE.Vector3();
+
+		return function computeBoundingSphere() {
+
+			if ( this.boundingSphere === null ) {
+
+				this.boundingSphere = new THREE.Sphere();
+
+			}
+
+			if ( this.boundingBox === null ) {
+
+				this.computeBoundingBox();
+
+			}
+
+			var start = this.attributes.instanceStart;
+			var end = this.attributes.instanceEnd;
+
+			if ( start !== undefined && end !== undefined ) {
+
+				var center = this.boundingSphere.center;
+
+				this.boundingBox.getCenter( center );
+
+				var maxRadiusSq = 0;
+
+				for ( var i = 0, il = start.count; i < il; i ++ ) {
+
+					vector.fromBufferAttribute( start, i );
+					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );
+
+					vector.fromBufferAttribute( end, i );
+					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );
+
+				}
+
+				this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+
+				if ( isNaN( this.boundingSphere.radius ) ) {
+
+					console.error( 'THREE.LineSegmentsGeometry.computeBoundingSphere(): Computed radius is NaN. The instanced position data is likely to have NaN values.', this );
+
+				}
+
+			}
+
+		};
+
+	}(),
+
+	toJSON: function () {
+
+		// todo
+
+	},
+
+	clone: function () {
+
+		// todo
+
+	},
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );

PCSurvey/libs/three.js/extra/lines/Wireframe.js

@@ -0,0 +1,65 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.Wireframe = function ( geometry, material ) {
+
+	THREE.Mesh.call( this );
+
+	this.type = 'Wireframe';
+
+	this.geometry = geometry !== undefined ? geometry : new THREE.LineSegmentsGeometry();
+	this.material = material !== undefined ? material : new THREE.LineMaterial( { color: Math.random() * 0xffffff } );
+
+};
+
+THREE.Wireframe.prototype = Object.assign( Object.create( THREE.Mesh.prototype ), {
+
+	constructor: THREE.Wireframe,
+
+	isWireframe: true,
+
+	computeLineDistances: ( function () { // for backwards-compatability, but could be a method of LineSegmentsGeometry...
+
+		var start = new THREE.Vector3();
+		var end = new THREE.Vector3();
+
+		return function computeLineDistances() {
+
+			var geometry = this.geometry;
+
+			var instanceStart = geometry.attributes.instanceStart;
+			var instanceEnd = geometry.attributes.instanceEnd;
+			var lineDistances = new Float32Array( 2 * instanceStart.data.count );
+
+			for ( var i = 0, j = 0, l = instanceStart.data.count; i < l; i ++, j += 2 ) {
+
+				start.fromBufferAttribute( instanceStart, i );
+				end.fromBufferAttribute( instanceEnd, i );
+
+				lineDistances[ j ] = ( j === 0 ) ? 0 : lineDistances[ j - 1 ];
+				lineDistances[ j + 1 ] = lineDistances[ j ] + start.distanceTo( end );
+
+			}
+
+			var instanceDistanceBuffer = new THREE.InstancedInterleavedBuffer( lineDistances, 2, 1 ); // d0, d1
+
+			geometry.addAttribute( 'instanceDistanceStart', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 0 ) ); // d0
+			geometry.addAttribute( 'instanceDistanceEnd', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 1 ) ); // d1
+
+			return this;
+
+		};
+
+	}() ),
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );

PCSurvey/libs/three.js/extra/lines/WireframeGeometry2.js

@@ -0,0 +1,32 @@
+/**
+ * @author WestLangley / http://github.com/WestLangley
+ *
+ */
+
+THREE.WireframeGeometry2 = function ( geometry ) {
+
+	THREE.LineSegmentsGeometry.call( this );
+
+	this.type = 'WireframeGeometry2';
+
+	this.fromWireframeGeometry( new THREE.WireframeGeometry( geometry ) );
+
+	// set colors, maybe
+
+};
+
+THREE.WireframeGeometry2.prototype = Object.assign( Object.create( THREE.LineSegmentsGeometry.prototype ), {
+
+	constructor: THREE.WireframeGeometry2,
+
+	isWireframeGeometry2: true,
+
+	copy: function ( /* source */ ) {
+
+		// todo
+
+		return this;
+
+	}
+
+} );