forked from: forked from: [PV3D] Ribon Road

=====================================================
Papervison3Dを利用したリボン表現
*
* Tweenerを使って作成したベジェ曲線に
* Planeを位置と角度を調整して並べています。
* 強引なやり方なので、いい方法があったら教えてください！
* 
* @author Yasu (clockmaker.jp)

======================================================

by hacker_y40q2z87 21 Oct 2009

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/**
 * Copyright hacker_y40q2z87 ( http://wonderfl.net/user/hacker_y40q2z87 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/dMX9
 */

// forked from hacker_y40q2z87's forked from: [PV3D] Ribon Road
// forked from clockmaker's [PV3D] Ribon Road
/*=====================================================*//**
* Papervison3Dを利用したリボン表現
*
* Tweenerを使って作成したベジェ曲線に
* Planeを位置と角度を調整して並べています。
* 強引なやり方なので、いい方法があったら教えてください！
* 
* @author Yasu (clockmaker.jp)
*//*======================================================*/
package
{
	import caurina.transitions.properties.CurveModifiers;
	import caurina.transitions.Tweener;
	import flash.display.*;
	import flash.events.*;
	import flash.utils.getTimer;
	import org.papervision3d.core.geom.*;
	import org.papervision3d.core.geom.renderables.*;
	import org.papervision3d.core.proto.*;
	import org.papervision3d.materials.shadematerials.*;
	import org.papervision3d.materials.special.*;
	import org.papervision3d.objects.*;
	import org.papervision3d.objects.primitives.*;
	import org.papervision3d.view.*;
	import org.papervision3d.cameras.*;
	import org.papervision3d.lights.*
	import org.papervision3d.materials.*
	import org.papervision3d.materials.utils.*
	import org.papervision3d.core.math.Matrix3D;
	
	[SWF(width = "720", height = "480", frameRate = "60", backgroundColor="0xFFFFFF")]

	public class Main extends BasicView
	{
                private var lineMaterial	        :LineMaterial;
                private var _arrLines		        :Array 	= [];
                private var _objArray		        :Array 	= [];
                private var LINES_NUM		:int 	= 1
                private var MAX_RADIUS		:int	= 3000;
                private var POINT_NUM		:uint 	= 5
                private var VERTICES_NUM	:uint 	= 400
                private var CAMERA_POSITION	:uint 	= 3000;
		
		public function Main()
		{
			super(0, 0, true, false, CameraType.FREE);
			CurveModifiers.init();
			camera.focus = 250
			camera.zoom = 1
			init()
			startRendering()
		}

		private function init():void
		{
			// 3d
			for (var i:int = 0; i < LINES_NUM; i++)
			{
				_arrPlanes[i] = [];
			}
			
			// 2d
			for (i = 0; i < LINES_NUM; i++)
			{
				var newPos:Object = getRandomPos()
				var o:Object =
				{
					x 		: newPos.x,
					prevX 	: newPos.x,
					y 		: newPos.y,
					prevY 	: newPos.y,
					z 		: newPos.z,
					prevZ 	: newPos.z,
					color 	: Math.random() * 0xFFFFFF
				}
				
				_objArray.push(o)
				randomTween(getRandomData(o))
			}
		}

		private function randomTween(o:Object):void
		{
			Tweener.addTween(o,
			{ 
				x			:	o.x1,
				y			:	o.y1, 
				z			:	o.z1, 
				_bezier		:	o.bezier, 
				time		        :	o.time,
				transition	        :	"linear", 
				onComplete	:	function():void
				{
					randomTween(getRandomData(o));
				}
			});
		}
		
		private function getRandomData(o:Object):Object
		{
			o.time = (POINT_NUM * 0.5) + (POINT_NUM * .75);
			var newPos:Object = getRandomPos();
			o.x1 = newPos.x;
			o.y1 = newPos.y;
			o.z1 = newPos.z;
			o.bezier = [];
			for (var i:int = 0; i < POINT_NUM; i++)
			{
				var newBezierPos:Object = getRandomPos();
				o.bezier.push(
				{
					x : newBezierPos.x,
					y : newBezierPos.y,
					z : newBezierPos.z
				});
			}
			return o;
		}

		private function getRandomPos():Object
		{
			var angleY:Number = Math.random() * 2 * Math.PI;
			var angleXZ:Number = Math.random() * 2 * Math.PI;
			return {
				x : Math.cos(angleY) * Math.sin(angleXZ) * MAX_RADIUS,
				y : Math.sin(angleY) * Math.sin(angleXZ) * MAX_RADIUS,
				z : Math.cos(angleXZ) * MAX_RADIUS
			};
		}
		
		private var _arrPlanes:Array = []
		
		override protected function onRenderTick(e:Event = null):void
		{
			for (var i:int = 0; i < LINES_NUM; i++)
			{
				var d1:DisplayObject3D = new DisplayObject3D()
				d1.x = _objArray[i].x
				d1.y = _objArray[i].y
				d1.z = _objArray[i].z
				var d2:DisplayObject3D = new DisplayObject3D()
				d2.x = _objArray[i].prevX
				d2.y = _objArray[i].prevY
				d2.z = _objArray[i].prevZ
				
				d1.lookAt(d2);
			
				// Planes
				var len:Number = Math.sqrt(
					(_objArray[i].x - _objArray[i].prevX) * (_objArray[i].x - _objArray[i].prevX)
					+ (_objArray[i].y - _objArray[i].prevY) * (_objArray[i].y - _objArray[i].prevY)
					+ (_objArray[i].z - _objArray[i].prevZ) * (_objArray[i].z - _objArray[i].prevZ)
				)
				
				var mat:MaterialObject3D = new WireframeMaterial(_objArray[i].color)
				mat.doubleSided = true
				var o:DisplayObject3D = scene.addChild(new Plane(mat, 100, 100))

				o.copyTransform(d1.transform)
				o.pitch(90)
				
				_arrPlanes[i].push(o);
				
				if (_arrPlanes[i].length > 10)
				{
					var tmp:DisplayObject3D = _arrPlanes[i][0]
					
					var cameraTarget :DisplayObject3D = new DisplayObject3D();
					cameraTarget.copyTransform( tmp );
					cameraTarget.moveBackward(100);
					cameraTarget.moveUp(100);
					camera.copyTransform(cameraTarget)
					
					camera.lookAt(_arrPlanes[i][10])
					cameraTarget = null
				}
				
				if (_arrPlanes[i].length > VERTICES_NUM)
				{
					scene.removeChild(_arrPlanes[i].shift())
				}
				
				_objArray[i].prevX = _objArray[i].x;
				_objArray[i].prevY = _objArray[i].y;
				_objArray[i].prevZ = _objArray[i].z;
			}
			
			super.onRenderTick(e);
		}
	}
}