source: other-projects/playing-in-the-street/summer-2013/trunk/Playing-in-the-Street-WPF/Content/Web/mrdoob-three.js-4862f5f/src/extras/geometries/CubeGeometry.js@ 28897

Last change on this file since 28897 was 28897, checked in by davidb, 10 years ago

GUI front-end to server base plus web page content
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1/**
2 * @author mrdoob / http://mrdoob.com/
3 * based on http://papervision3d.googlecode.com/svn/trunk/as3/trunk/src/org/papervision3d/objects/primitives/Cube.as
4 */
5
6THREE.CubeGeometry = function ( width, height, depth, widthSegments, heightSegments, depthSegments ) {
7
8 THREE.Geometry.call( this );
9
10 var scope = this;
11
12 this.width = width;
13 this.height = height;
14 this.depth = depth;
15
16 this.widthSegments = widthSegments || 1;
17 this.heightSegments = heightSegments || 1;
18 this.depthSegments = depthSegments || 1;
19
20 var width_half = this.width / 2;
21 var height_half = this.height / 2;
22 var depth_half = this.depth / 2;
23
24 buildPlane( 'z', 'y', - 1, - 1, this.depth, this.height, width_half, 0 ); // px
25 buildPlane( 'z', 'y', 1, - 1, this.depth, this.height, - width_half, 1 ); // nx
26 buildPlane( 'x', 'z', 1, 1, this.width, this.depth, height_half, 2 ); // py
27 buildPlane( 'x', 'z', 1, - 1, this.width, this.depth, - height_half, 3 ); // ny
28 buildPlane( 'x', 'y', 1, - 1, this.width, this.height, depth_half, 4 ); // pz
29 buildPlane( 'x', 'y', - 1, - 1, this.width, this.height, - depth_half, 5 ); // nz
30
31 function buildPlane( u, v, udir, vdir, width, height, depth, materialIndex ) {
32
33 var w, ix, iy,
34 gridX = scope.widthSegments,
35 gridY = scope.heightSegments,
36 width_half = width / 2,
37 height_half = height / 2,
38 offset = scope.vertices.length;
39
40 if ( ( u === 'x' && v === 'y' ) || ( u === 'y' && v === 'x' ) ) {
41
42 w = 'z';
43
44 } else if ( ( u === 'x' && v === 'z' ) || ( u === 'z' && v === 'x' ) ) {
45
46 w = 'y';
47 gridY = scope.depthSegments;
48
49 } else if ( ( u === 'z' && v === 'y' ) || ( u === 'y' && v === 'z' ) ) {
50
51 w = 'x';
52 gridX = scope.depthSegments;
53
54 }
55
56 var gridX1 = gridX + 1,
57 gridY1 = gridY + 1,
58 segment_width = width / gridX,
59 segment_height = height / gridY,
60 normal = new THREE.Vector3();
61
62 normal[ w ] = depth > 0 ? 1 : - 1;
63
64 for ( iy = 0; iy < gridY1; iy ++ ) {
65
66 for ( ix = 0; ix < gridX1; ix ++ ) {
67
68 var vector = new THREE.Vector3();
69 vector[ u ] = ( ix * segment_width - width_half ) * udir;
70 vector[ v ] = ( iy * segment_height - height_half ) * vdir;
71 vector[ w ] = depth;
72
73 scope.vertices.push( vector );
74
75 }
76
77 }
78
79 for ( iy = 0; iy < gridY; iy++ ) {
80
81 for ( ix = 0; ix < gridX; ix++ ) {
82
83 var a = ix + gridX1 * iy;
84 var b = ix + gridX1 * ( iy + 1 );
85 var c = ( ix + 1 ) + gridX1 * ( iy + 1 );
86 var d = ( ix + 1 ) + gridX1 * iy;
87
88 var uva = new THREE.Vector2( ix / gridX, 1 - iy / gridY );
89 var uvb = new THREE.Vector2( ix / gridX, 1 - ( iy + 1 ) / gridY );
90 var uvc = new THREE.Vector2( ( ix + 1 ) / gridX, 1 - ( iy + 1 ) / gridY );
91 var uvd = new THREE.Vector2( ( ix + 1 ) / gridX, 1 - iy / gridY );
92
93 var face = new THREE.Face3( a + offset, b + offset, d + offset );
94 face.normal.copy( normal );
95 face.vertexNormals.push( normal.clone(), normal.clone(), normal.clone() );
96 face.materialIndex = materialIndex;
97
98 scope.faces.push( face );
99 scope.faceVertexUvs[ 0 ].push( [ uva, uvb, uvd ] );
100
101 face = new THREE.Face3( b + offset, c + offset, d + offset );
102 face.normal.copy( normal );
103 face.vertexNormals.push( normal.clone(), normal.clone(), normal.clone() );
104 face.materialIndex = materialIndex;
105
106 scope.faces.push( face );
107 scope.faceVertexUvs[ 0 ].push( [ uvb.clone(), uvc, uvd.clone() ] );
108
109 }
110
111 }
112
113 }
114
115 this.computeCentroids();
116 this.mergeVertices();
117
118};
119
120THREE.CubeGeometry.prototype = Object.create( THREE.Geometry.prototype );
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