Initial commit

HTML/ThreeJS/node_modules/three/examples/js/lines/Wireframe.js

@@ -0,0 +1,53 @@
+( function () {
+
+	const _start = new THREE.Vector3();
+
+	const _end = new THREE.Vector3();
+
+	class Wireframe extends THREE.Mesh {
+
+		constructor( geometry = new THREE.LineSegmentsGeometry(), material = new THREE.LineMaterial( {
+			color: Math.random() * 0xffffff
+		} ) ) {
+
+			super( geometry, material );
+			this.type = 'Wireframe';
+
+		} // for backwards-compatability, but could be a method of THREE.LineSegmentsGeometry...
+
+
+		computeLineDistances() {
+
+			const geometry = this.geometry;
+			const instanceStart = geometry.attributes.instanceStart;
+			const instanceEnd = geometry.attributes.instanceEnd;
+			const lineDistances = new Float32Array( 2 * instanceStart.count );
+
+			for ( let i = 0, j = 0, l = instanceStart.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 );
+
+			}
+
+			const instanceDistanceBuffer = new THREE.InstancedInterleavedBuffer( lineDistances, 2, 1 ); // d0, d1
+
+			geometry.setAttribute( 'instanceDistanceStart', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 0 ) ); // d0
+
+			geometry.setAttribute( 'instanceDistanceEnd', new THREE.InterleavedBufferAttribute( instanceDistanceBuffer, 1, 1 ) ); // d1
+
+			return this;
+
+		}
+
+	}
+
+	Wireframe.prototype.isWireframe = true;
+
+	THREE.Wireframe = Wireframe;
+
+} )();