package away3d.primitives

{

	import away3d.entities.SegmentSet;



	import flash.geom.Vector3D;



	/**

	* Class WireframeAxesGrid generates a grid of lines on a given plane<code>WireframeAxesGrid</code>

	* @param	subDivision		[optional] uint . Default is 10;

	* @param	gridSize				[optional] uint . Default is 100;

	* @param	thickness			[optional] Number . Default is 1;

	* @param	colorXY				[optional] uint. Default is 0x0000FF.

	* @param	colorZY				[optional] uint. Default is 0xFF0000. 

	* @param	colorXZ				[optional] uint. Default is 0x00FF00.

	*/



	public class WireframeAxesGrid extends SegmentSet

	{

		private static const PLANE_ZY:String = "zy";

		private static const PLANE_XY:String = "xy";

		private static const PLANE_XZ:String = "xz";



		public function WireframeAxesGrid(subDivision:uint = 10, gridSize:uint = 100, thickness:Number = 1, colorXY : uint = 0x0000FF, colorZY : uint = 0xFF0000, colorXZ : uint = 0x00FF00) {

			super();



			if(subDivision == 0) subDivision = 1;

			if(thickness <= 0) thickness = 1;

			if(gridSize ==  0) gridSize = 1;



			build(subDivision, gridSize, colorXY, thickness, PLANE_XY);

			build(subDivision, gridSize, colorZY, thickness, PLANE_ZY);

			build(subDivision, gridSize, colorXZ, thickness, PLANE_XZ);

		}



		private function build(subDivision:uint, gridSize:uint, color:uint, thickness:Number, plane:String):void

		{

			var bound:Number = gridSize *.5;

			var step:Number = gridSize/subDivision;

			var v0 : Vector3D = new Vector3D(0, 0, 0) ;

			var v1 : Vector3D = new Vector3D(0, 0, 0) ;

			var inc:Number = -bound;



			while(inc<=bound){



				switch(plane){

					case PLANE_ZY:

						v0.x = 0;

						v0.y = inc;

						v0.z = bound;

						v1.x = 0;

						v1.y = inc;

						v1.z = -bound;

						addSegment( new LineSegment(v0, v1, color, color, thickness));



						v0.z = inc;

						v0.x = 0;

						v0.y = bound;

						v1.x = 0;

						v1.y = -bound;

						v1.z = inc;

						addSegment(new LineSegment(v0, v1, color, color, thickness ));

						break;



					case PLANE_XY:

						v0.x = bound;

						v0.y = inc;

						v0.z = 0;

						v1.x = -bound;

						v1.y = inc;

						v1.z = 0;

						addSegment( new LineSegment(v0, v1, color, color, thickness));

						v0.x = inc;

						v0.y = bound;

						v0.z = 0;

						v1.x = inc;

						v1.y = -bound;

						v1.z = 0;

						addSegment(new LineSegment(v0, v1, color, color, thickness ));

						break;



					default:

						v0.x = bound;

						v0.y = 0;

						v0.z = inc;

						v1.x = -bound;

						v1.y = 0;

						v1.z = inc;

						addSegment( new LineSegment(v0, v1, color, color, thickness));



						v0.x = inc;

						v0.y = 0;

						v0.z = bound;

						v1.x = inc;

						v1.y = 0;

						v1.z = -bound;

						addSegment(new LineSegment(v0, v1, color, color, thickness ));

				}



				inc += step;

			}

		}



	}

}