[PV3D] 3D Visual Art Demo

Papervision3Dでビジュアルアート
* ステージをマウスドラッグで回転できます
* 参考：

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license : MIT License
modified : 2009-03-19 00:38:45

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/**
* Papervision3Dでビジュアルアート
* ステージをマウスドラッグで回転できます
* 参考： 
*/
package 
{
	import flash.display.*;
	import flash.events.*;
	import flash.utils.getTimer;
	import org.papervision3d.core.proto.*;
	import org.papervision3d.lights.*;
	import org.papervision3d.materials.*;
	import org.papervision3d.materials.shadematerials.*;
	import org.papervision3d.objects.*;
	import org.papervision3d.objects.primitives.*;
	import org.papervision3d.view.BasicView;
	
	public class Main extends BasicView
	{
		// Const Vars
		static private const ROT_NUM			:uint = 15;
		static private const CHILDREN_NUM		:uint = 35;
		
		private var higes:Array = [];
		
		/**
		 * Constructor
		 */
		public function Main():void 
		{
			stage.quality = StageQuality.MEDIUM;
			
			var light:PointLight3D = new PointLight3D();
			
			// create 3d objects
			for (var i:int = 0; i < ROT_NUM; i++) 
			{
				var hige:DisplayObject3D = new DisplayObject3D();
				scene.addChild(hige);
				
				hige.rotationY = i * 360 / ROT_NUM;
				
				var distance:Number = 100;
				
				for (var j:int = 0; j < CHILDREN_NUM; j++) 
				{
					var m:MaterialObject3D = new FlatShadeMaterial(light, 0xFF0000 + 0x001000 * j, 0x000000);
					var s:Sphere = new Sphere(m, 50, 1, 1);
					
					s.scale = 1 - 1 / CHILDREN_NUM * j;
					distance += 70 * s.scale;
					s.z = distance;
					hige.addChild(s);
					
					if (higes[j] == null) higes[j] = [];
					higes[j][i] = s
				}
			}
			
			// rendering
			startRendering();
			
			// mouse interactive
			stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
			stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
			stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
		}
		
		/**
		 * onEnterFrame
		 * @param	event
		 */
		override protected function onRenderTick(event:Event = null):void 
		{
			// Hige Animation
			for (var j:int = 0; j < higes.length; j++) 
			{
				for (var i:int = 0; i < higes[j].length; i++) 
				{
					var rot:Number = getTimer() / 1000 + 100 * i;
					higes[j][i].x = Math.sin(rot) * 30 * j
					higes[j][i].y = Math.cos(rot) * 10 * j
				}
			}
			
			// Mouse Interactive
			easePitch += (cameraPitch - easePitch) * 0.2
			easeYaw += (cameraYaw - easeYaw) * 0.2
			camera.orbit(easePitch, easeYaw, true, cameraTarget);
			
			// render
			super.onRenderTick(event);
		}
		
		// ----------------------------------------------
		// Mouse Interactive
		// ----------------------------------------------
		
		private var isOribiting:Boolean;
		private var cameraPitch:Number = 90;
		private var cameraYaw:Number = 270;
		private var cameraTarget:DisplayObject3D = DisplayObject3D.ZERO;
		private var previousMouseX:Number;
		private var previousMouseY:Number;
		private var easePitch:Number = 90;
		private var easeYaw:Number = 270;
		
		private function onMouseDown(event:MouseEvent):void
		{
			isOribiting = true;
			previousMouseX = event.stageX;
			previousMouseY = event.stageY;
			singleRender();
		}
 
		private function onMouseUp(event:MouseEvent):void
		{
			isOribiting = false;
		}
 
		private function onMouseMove(event:MouseEvent):void
		{
			var differenceX:Number = event.stageX - previousMouseX;
			var differenceY:Number = event.stageY - previousMouseY;
 
			if(isOribiting)
			{
				cameraPitch += differenceY * 0.25;
				cameraYaw += differenceX * 0.25;
 
				cameraPitch %= 360;
 
				cameraPitch = cameraPitch > 0 ? cameraPitch : 0.0001;
				cameraPitch = cameraPitch < 180 ? cameraPitch : 179.9999;
 
				previousMouseX = event.stageX;
				previousMouseY = event.stageY;
			}
		}
	}
}

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