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https://github.com/Doodle3D/Doodle3D-Slicer.git
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80 lines
2.1 KiB
JavaScript
Executable File
80 lines
2.1 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.PlaneGeometry = function ( width, height, widthSegments, heightSegments ) {
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THREE.Geometry.call( this );
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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 ix, iz;
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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 gridZ = this.heightSegments;
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var gridX1 = gridX + 1;
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var gridZ1 = gridZ + 1;
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var segment_width = this.width / gridX;
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var segment_height = this.height / gridZ;
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var normal = new THREE.Vector3( 0, 0, 1 );
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for ( iz = 0; iz < gridZ1; iz ++ ) {
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for ( ix = 0; ix < gridX1; ix ++ ) {
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var x = ix * segment_width - width_half;
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var y = iz * segment_height - height_half;
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this.vertices.push( new THREE.Vector3( x, - y, 0 ) );
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}
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}
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for ( iz = 0; iz < gridZ; iz ++ ) {
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for ( ix = 0; ix < gridX; ix ++ ) {
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var a = ix + gridX1 * iz;
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var b = ix + gridX1 * ( iz + 1 );
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var c = ( ix + 1 ) + gridX1 * ( iz + 1 );
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var d = ( ix + 1 ) + gridX1 * iz;
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var uva = new THREE.Vector2( ix / gridX, 1 - iz / gridZ );
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var uvb = new THREE.Vector2( ix / gridX, 1 - ( iz + 1 ) / gridZ );
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var uvc = new THREE.Vector2( ( ix + 1 ) / gridX, 1 - ( iz + 1 ) / gridZ );
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var uvd = new THREE.Vector2( ( ix + 1 ) / gridX, 1 - iz / gridZ );
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var face = new THREE.Face3( a, b, d );
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face.normal.copy( normal );
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face.vertexNormals.push( normal.clone(), normal.clone(), normal.clone() );
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this.faces.push( face );
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this.faceVertexUvs[ 0 ].push( [ uva, uvb, uvd ] );
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face = new THREE.Face3( b, c, d );
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face.normal.copy( normal );
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face.vertexNormals.push( normal.clone(), normal.clone(), normal.clone() );
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this.faces.push( face );
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this.faceVertexUvs[ 0 ].push( [ uvb.clone(), uvc, uvd.clone() ] );
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}
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}
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};
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THREE.PlaneGeometry.prototype = Object.create( THREE.Geometry.prototype );
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THREE.PlaneGeometry.prototype.constructor = THREE.PlaneGeometry;
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