mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-17 03:27:57 +01:00
115 lines
3.0 KiB
JavaScript
Executable File
115 lines
3.0 KiB
JavaScript
Executable File
/**
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* @author mrdoob / http://mrdoob.com/
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* based on http://papervision3d.googlecode.com/svn/trunk/as3/trunk/src/org/papervision3d/objects/primitives/Cube.as
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*/
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THREE.BoxGeometry2 = function ( width, height, depth, widthSegments, heightSegments, depthSegments ) {
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var scope = this;
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this.width = width;
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this.height = height;
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this.depth = depth;
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this.widthSegments = widthSegments || 1;
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this.heightSegments = heightSegments || 1;
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this.depthSegments = depthSegments || 1;
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var width_half = this.width / 2;
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var height_half = this.height / 2;
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var depth_half = this.depth / 2;
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var vector = new THREE.Vector3();
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var vectors = [];
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var vertices = [];
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var addVertex = function ( a, b, c ) {
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vertices.push( vectors[ a ], vectors[ a + 1 ], vectors[ a + 2 ] );
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vertices.push( vectors[ b ], vectors[ b + 1 ], vectors[ b + 2 ] );
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vertices.push( vectors[ c ], vectors[ c + 1 ], vectors[ c + 2 ] );
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};
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buildPlane( 'z', 'y', - 1, - 1, this.depth, this.height, width_half, 0 ); // px
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buildPlane( 'z', 'y', 1, - 1, this.depth, this.height, - width_half, 1 ); // nx
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buildPlane( 'x', 'z', 1, 1, this.width, this.depth, height_half, 2 ); // py
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buildPlane( 'x', 'z', 1, - 1, this.width, this.depth, - height_half, 3 ); // ny
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buildPlane( 'x', 'y', 1, - 1, this.width, this.height, depth_half, 4 ); // pz
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buildPlane( 'x', 'y', - 1, - 1, this.width, this.height, - depth_half, 5 ); // nz
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function buildPlane( u, v, udir, vdir, width, height, depth, materialIndex ) {
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var w, ix, iy,
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gridX = scope.widthSegments,
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gridY = scope.heightSegments,
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width_half = width / 2,
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height_half = height / 2,
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offset = vectors.length;
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if ( ( u === 'x' && v === 'y' ) || ( u === 'y' && v === 'x' ) ) {
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w = 'z';
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} else if ( ( u === 'x' && v === 'z' ) || ( u === 'z' && v === 'x' ) ) {
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w = 'y';
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gridY = scope.depthSegments;
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} else if ( ( u === 'z' && v === 'y' ) || ( u === 'y' && v === 'z' ) ) {
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w = 'x';
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gridX = scope.depthSegments;
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}
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var gridX1 = gridX + 1,
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gridY1 = gridY + 1,
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segment_width = width / gridX,
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segment_height = height / gridY,
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normal = new THREE.Vector3();
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normal[ w ] = depth > 0 ? 1 : - 1;
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for ( iy = 0; iy < gridY1; iy ++ ) {
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for ( ix = 0; ix < gridX1; ix ++ ) {
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vector[ u ] = ( ix * segment_width - width_half ) * udir;
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vector[ v ] = ( iy * segment_height - height_half ) * vdir;
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vector[ w ] = depth;
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vectors.push( vector.x, vector.y, vector.z );
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}
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}
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for ( iy = 0; iy < gridY; iy ++ ) {
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for ( ix = 0; ix < gridX; ix ++ ) {
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var a = ix + gridX1 * iy;
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var b = ix + gridX1 * ( iy + 1 );
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var c = ( ix + 1 ) + gridX1 * ( iy + 1 );
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var d = ( ix + 1 ) + gridX1 * iy;
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addVertex( a * 3 + offset, b * 3 + offset, d * 3 + offset );
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addVertex( b * 3 + offset, c * 3 + offset, d * 3 + offset );
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}
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}
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}
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THREE.Geometry2.call( this, vertices.length / 3 );
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this.vertices.set( vertices );
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};
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THREE.BoxGeometry2.prototype = Object.create( THREE.Geometry2.prototype );
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THREE.BoxGeometry2.prototype.constructor = THREE.BoxGeometry2;
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