63 lines
1.4 KiB
JavaScript
63 lines
1.4 KiB
JavaScript
/**
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* @author mr.doob / 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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var Plane = function ( width, height, segments_width, segments_height ) {
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THREE.Geometry.call( this );
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var ix, iy,
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width_half = width / 2,
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height_half = height / 2,
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gridX = segments_width || 1,
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gridY = segments_height || 1,
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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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for( iy = 0; iy < gridY1; iy++ ) {
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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 = iy * segment_height - height_half;
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this.vertices.push( new THREE.Vertex( new THREE.Vector3( x, - y, 0 ) ) );
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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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this.faces.push( new THREE.Face4( a, b, c, d ) );
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this.uvs.push( [
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new THREE.UV( ix / gridX, iy / gridY ),
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new THREE.UV( ix / gridX, ( iy + 1 ) / gridY ),
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new THREE.UV( ( ix + 1 ) / gridX, ( iy + 1 ) / gridY ),
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new THREE.UV( ( ix + 1 ) / gridX, iy / gridY )
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] );
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}
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}
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this.computeCentroids();
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this.computeFaceNormals();
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this.sortFacesByMaterial();
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};
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Plane.prototype = new THREE.Geometry();
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Plane.prototype.constructor = Plane;
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