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https://github.com/Doodle3D/Doodle3D-Slicer.git
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84 lines
1.8 KiB
JavaScript
Executable File
84 lines
1.8 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/Plane.as
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*/
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THREE.IndexedPlaneGeometry5 = function ( width, height, widthSegments, heightSegments ) {
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this.width = width;
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this.height = height;
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this.widthSegments = widthSegments || 1;
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this.heightSegments = heightSegments || 1;
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var width_half = width / 2;
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var height_half = height / 2;
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var gridX = this.widthSegments;
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var gridY = this.heightSegments;
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var gridX1 = gridX + 1;
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var gridY1 = gridY + 1;
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var segment_width = this.width / gridX;
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var segment_height = this.height / gridY;
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var indices = gridX * gridY * 6;
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var vertices = gridX1 * gridY1;
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THREE.IndexedGeometry5.call( this, indices, vertices );
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var offset = 0;
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for ( var iy = 0; iy < gridY1; iy ++ ) {
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var y = iy * segment_height - height_half;
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for ( var ix = 0; ix < gridX1; ix ++ ) {
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var x = ix * segment_width - width_half;
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this.vertices[ offset ].x = x;
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this.vertices[ offset ].y = - y;
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this.normals[ offset ].z = 1;
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this.uvs[ offset ].x = ix / gridX;
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this.uvs[ offset ].y = iy / gridY;
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offset ++;
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}
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}
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var offset = 0;
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for ( var iy = 0; iy < gridY; iy ++ ) {
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for ( var 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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this.indices[ offset ] = a;
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this.indices[ offset + 1 ] = b;
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this.indices[ offset + 2 ] = d;
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this.indices[ offset + 3 ] = b;
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this.indices[ offset + 4 ] = c;
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this.indices[ offset + 5 ] = d;
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offset += 6;
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}
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}
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};
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THREE.IndexedPlaneGeometry5.prototype = Object.create( THREE.IndexedGeometry5.prototype );
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THREE.IndexedPlaneGeometry5.prototype.constructor = THREE.IndexedPlaneGeometry5;
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