particle.as

来自「ActionScript写的3D图片展示功能」· AS 代码 · 共 82 行

package org.papervision3d.core.geom.renderables
{
	
	/**
	 * @author Ralph Hauwert.
	 * 
	 * updated by Seb Lee-Delisle : 
	 *  - added renderRect to store the rectangle of our particle. 
	 */
	 
	import flash.geom.Rectangle;
	
	import org.papervision3d.core.geom.Particles;
	import org.papervision3d.core.render.command.IRenderListItem;
	import org.papervision3d.core.render.command.RenderParticle;
	import org.papervision3d.materials.special.ParticleMaterial;	
	
	public class Particle extends AbstractRenderable implements IRenderable
	{
		
		public var size:Number;
		public var vertex3D:Vertex3D;
		public var material:ParticleMaterial;
		public var renderCommand:RenderParticle;
		public var instance:Particles;
		public var renderScale:Number;
		
		// this is the rectangular area encasing the particle graphic. 
		public var renderRect:Rectangle;
		
		
		public function Particle(material:ParticleMaterial, size:Number=1, x:Number=0, y:Number=0, z:Number=0)
		{
			this.material = material;
			this.size = size;
			this.renderCommand = new RenderParticle(this);
			this.renderRect = new Rectangle();
			vertex3D = new Vertex3D(x,y,z);
		}
		
		public function updateRenderRect():void
		{
			material.updateRenderRect(this)
		}
		
		public function set x(x:Number):void
		{
			vertex3D.x = x;
		}
		
		public function get x():Number
		{
			return vertex3D.x;
		}
		
		public function set y(y:Number):void
		{
			vertex3D.y = y;
		}
		
		public function get y():Number
		{
			return vertex3D.y;
		}
		
		public function set z(z:Number):void
		{
			vertex3D.z = z;
		}
		
		public function get z():Number
		{
			return vertex3D.z;
		}
		
		override public function getRenderListItem():IRenderListItem
		{
			return renderCommand;
		}
		
	}
}