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/**
* @author mr.doob / http://mrdoob.com/
* based on http://papervision3d.googlecode.com/svn/trunk/as3/trunk/src/org/papervision3d/objects/primitives/Plane.as
*/
var Plane = function ( width, height, segments_width, segments_height ) {
THREE.Geometry.call( this );
var ix, iy,
width_half = width / 2,
height_half = height / 2,
gridX = segments_width || 1,
gridY = segments_height || 1,
gridX1 = gridX + 1,
gridY1 = gridY + 1,
segment_width = width / gridX,
segment_height = height / gridY;
for( iy = 0; iy < gridY1; iy++ ) {
for( ix = 0; ix < gridX1; ix++ ) {
var x = ix * segment_width - width_half;
var y = iy * segment_height - height_half;
this.vertices.push( new THREE.Vertex( new THREE.Vector3( x, - y, 0 ) ) );
}
}
for( iy = 0; iy < gridY; iy++ ) {
for( ix = 0; ix < gridX; ix++ ) {
var a = ix + gridX1 * iy;
var b = ix + gridX1 * ( iy + 1 );
var c = ( ix + 1 ) + gridX1 * ( iy + 1 );
var d = ( ix + 1 ) + gridX1 * iy;
this.faces.push( new THREE.Face4( a, b, c, d ) );
this.uvs.push( [
new THREE.UV( ix / gridX, iy / gridY ),
new THREE.UV( ix / gridX, ( iy + 1 ) / gridY ),
new THREE.UV( ( ix + 1 ) / gridX, ( iy + 1 ) / gridY ),
new THREE.UV( ( ix + 1 ) / gridX, iy / gridY )
] );
}
}
this.computeCentroids();
this.computeFaceNormals();
this.sortFacesByMaterial();
};
Plane.prototype = new THREE.Geometry();
Plane.prototype.constructor = Plane;
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