init

python

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;
+
+	}
+
+} );