MeshSurfaceSampler: Delete js/ version, keep jsm/.

examples/js/math/MeshSurfaceSampler.js

-/**
- * @author donmccurdy / https://www.donmccurdy.com/
- */
-
-/**
- * Utility class for sampling weighted random points on the surface of a mesh.
- *
- * Building the sampler is a one-time O(n) operation. Once built, any number of
- * random samples may be selected in O(logn) time. Memory usage is O(n).
- *
- * References:
- * - http://www.joesfer.com/?p=84
- * - https://stackoverflow.com/a/4322940/1314762
- */
-THREE.MeshSurfaceSampler = ( function () {
-
-	var _face = new THREE.Triangle();
-
-	function MeshSurfaceSampler ( geometry ) {
-
-		if ( ! geometry.isBufferGeometry || geometry.attributes.position.itemSize !== 3 ) {
-
-			throw new Error( 'THREE.MeshSurfaceSampler: Requires BufferGeometry triangle mesh.' );
-
-		}
-
-		if ( geometry.index ) {
-
-			console.warn( 'THREE.MeshSurfaceSampler: Converting geometry to non-indexed BufferGeometry.' );
-
-			geometry = geometry.toNonIndexed();
-
-		}
-
-		this.geometry = geometry;
-
-		this.positionAttribute = this.geometry.getAttribute( 'position' );
-		this.weightAttribute = null;
-
-		this.distribution = null;
-
-	};
-
-	MeshSurfaceSampler.prototype = {
-
-		constructor: MeshSurfaceSampler,
-
-		setWeightAttribute: function ( name ) {
-
-			this.weightAttribute = name ? this.geometry.getAttribute( name ) : null;
-
-			return this;
-
-		},
-
-		build: function () {
-
-			var positionAttribute = this.positionAttribute;
-			var weightAttribute = this.weightAttribute;
-
-			var faceWeights = new Float32Array( positionAttribute.count / 3 );
-
-			// Accumulate weights for each mesh face.
-
-			for ( var i = 0; i < positionAttribute.count; i += 3 ) {
-
-				var faceWeight = 1;
-
-				if ( weightAttribute ) {
-
-					faceWeight = weightAttribute.getX( i )
-						+ weightAttribute.getX( i + 1 )
-						+ weightAttribute.getX( i + 2 );
-
-				}
-
-				_face.a.fromBufferAttribute( positionAttribute, i );
-				_face.b.fromBufferAttribute( positionAttribute, i + 1 );
-				_face.c.fromBufferAttribute( positionAttribute, i + 2 );
-				faceWeight *= _face.getArea();
-
-				faceWeights[ i / 3 ] = faceWeight;
-
-			}
-
-			// Store cumulative total face weights in an array, where weight index
-			// corresponds to face index.
-
-			this.distribution = new Float32Array( positionAttribute.count / 3 );
-
-			var cumulativeTotal = 0;
-
-			for ( var i = 0; i < faceWeights.length; i ++ ) {
-
-				cumulativeTotal += faceWeights[ i ];
-
-				this.distribution[ i ] = cumulativeTotal;
-
-			}
-
-			return this;
-
-		},
-
-		sample: function ( targetPosition, targetNormal ) {
-
-			var cumulativeTotal = this.distribution[ this.distribution.length - 1 ];
-
-			var faceIndex = this.binarySearch( Math.random() * cumulativeTotal );
-
-			return this.sampleFace( faceIndex, targetPosition, targetNormal );
-
-		},
-
-		binarySearch: function ( x ) {
-
-			var dist = this.distribution;
-			var start = 0;
-			var end = dist.length - 1;
-
-			var index = -1;
-
-			while ( start <= end ) {
-
-				var mid = Math.floor( ( start + end ) / 2 );
-
-				if ( dist[ mid - 1 ] <= x && dist[ mid ] > x ) {
-
-					index = mid;
-
-					break;
-
-				} else if ( x < dist[ mid ] ) {
-
-					end = mid - 1;
-
-				} else {
-
-					start = mid + 1;
-
-				}
-
-			}
-
-			return index;
-
-		},
-
-		sampleFace: function ( faceIndex, targetPosition, targetNormal ) {
-
-			var u = Math.random();
-			var v = Math.random();
-
-			if ( u + v > 1 ) {
-
-				u = 1 - u;
-				v = 1 - v;
-
-			}
-
-			_face.a.fromBufferAttribute( this.positionAttribute, faceIndex * 3 );
-			_face.b.fromBufferAttribute( this.positionAttribute, faceIndex * 3 + 1 );
-			_face.c.fromBufferAttribute( this.positionAttribute, faceIndex * 3 + 2 );
-
-			targetPosition
-				.set( 0, 0, 0 )
-				.addScaledVector( _face.a, u )
-				.addScaledVector( _face.b, v )
-				.addScaledVector( _face.c, 1 - ( u + v ) );
-
-			_face.getNormal( targetNormal );
-
-			return this;
-
-		}
-
-	};
-
-	return MeshSurfaceSampler;
-
-} )();

utils/modularize.js

@@ -111,7 +111,6 @@ var files = [
 	{ path: 'math/ConvexHull.js', dependencies: [], ignoreList: [] },
 	{ path: 'math/ImprovedNoise.js', dependencies: [], ignoreList: [] },
 	{ path: 'math/Lut.js', dependencies: [], ignoreList: [] },
-	{ path: 'math/MeshSurfaceSampler.js', dependencies: [], ignoreList: [] },
 	{ path: 'math/SimplexNoise.js', dependencies: [], ignoreList: [] },
 
 	{ path: 'misc/CarControls.js', dependencies: [], ignoreList: [] },