/trunk/src/com/as3dmod/modifiers/Pivot.as   r0
 
 

 
/trunk/src/com/as3dmod/modifiers/Pivot.as   r89
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 

 

 
 
 
 
 
 
 
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package com.as3dmod.modifiers {
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	import com.as3dmod.IModifier;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	import com.as3dmod.core.Modifier;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	import com.as3dmod.core.Vector3;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	import com.as3dmod.core.VertexProxy;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	/**
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	<b>Pivot modifier.</b> Allows to move the pivot point of a 3D mesh.
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	<br>
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	<br>The pivot point will be moved by the amount specified by the pivot parameter.
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	<br>Common use case is to set the values of the pivot vector, add it to the modifier stack
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	and collapse the stack. This way the pivot point will be moved and the modifier discarded. The
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	same stack can be later resused for other modifiers.
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	<br>
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	<br>It is possible to animtate the pivot vector propeties also.
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 *
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	@version 1.0
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 * 	@author Bartek Drozdz
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	 */
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	public class Pivot extends Modifier implements IModifier {
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		public var pivot:Vector3;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		public function Pivot(x:Number=0, y:Number=0, z:Number=0) {
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			this.pivot = new Vector3(x, y, z);
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		}
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		/**
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		 * Sets the values of the pivot vector so that the pivot point of the mesh will be moved to it's center.
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		 */
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		public function setMeshCenter():void {
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			var vx:Number = -(mod.minX + mod.width / 2);
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			var vy:Number = -(mod.minY + mod.height / 2);
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			var vz:Number = -(mod.minZ + mod.depth / 2);
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			pivot = new Vector3(vx, vy, vz);
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		}
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		public function apply():void {
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			var vs:Array = mod.getVertices();
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			var vc:int = vs.length;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			for (var i:int = 0; i < vc; i++) {
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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				var v:VertexProxy = vs[i] as VertexProxy;
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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				v.vector = v.vector.add(pivot);
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			}
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			var npivot:Vector3 = pivot.clone();
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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			mod.updateMeshPosition(npivot.negate());
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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		}
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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	}
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
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}