Spaces:
Running
Running
File size: 1,727 Bytes
6cd9596 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 |
/**
* @author Mugen87 / https://github.com/Mugen87
*/
( function () {
// ConvexGeometry
function ConvexGeometry( points ) {
THREE.Geometry.call( this );
this.fromBufferGeometry( new ConvexBufferGeometry( points ) );
this.mergeVertices();
}
ConvexGeometry.prototype = Object.create( THREE.Geometry.prototype );
ConvexGeometry.prototype.constructor = ConvexGeometry;
// ConvexBufferGeometry
function ConvexBufferGeometry( points ) {
THREE.BufferGeometry.call( this );
// buffers
var vertices = [];
var normals = [];
// execute QuickHull
if ( THREE.QuickHull === undefined ) {
console.error( 'THREE.ConvexBufferGeometry: ConvexBufferGeometry relies on THREE.QuickHull' );
}
var quickHull = new THREE.QuickHull().setFromPoints( points );
// generate vertices and normals
var faces = quickHull.faces;
for ( var i = 0; i < faces.length; i ++ ) {
var face = faces[ i ];
var edge = face.edge;
// we move along a doubly-connected edge list to access all face points (see HalfEdge docs)
do {
var point = edge.head().point;
vertices.push( point.x, point.y, point.z );
normals.push( face.normal.x, face.normal.y, face.normal.z );
edge = edge.next;
} while ( edge !== face.edge );
}
// build geometry
this.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
this.addAttribute( 'normal', new THREE.Float32BufferAttribute( normals, 3 ) );
}
ConvexBufferGeometry.prototype = Object.create( THREE.BufferGeometry.prototype );
ConvexBufferGeometry.prototype.constructor = ConvexBufferGeometry;
// export
THREE.ConvexGeometry = ConvexGeometry;
THREE.ConvexBufferGeometry = ConvexBufferGeometry;
} )();
|