空間にラインを引く。

by hiphi 16 Feb 2009

Tags

3D line
Embed

package
{
	import flash.display.MovieClip;
	import flash.text.TextField;
	import flash.events.Event;
	import flash.display.Shape;
	import flash.events.MouseEvent;
	import flash.events.TimerEvent;
	import flash.display.StageAlign;
	import flash.display.StageScaleMode;
	import flash.utils.Timer;

	public class main2 extends MovieClip
	{
		public var screenZ:Number = 100;
		protected var _camera:Object;
		protected var _objectArray:Array = new Array();
		
		public var shapes:Array = new Array();
		
		protected var timer:Timer;
		 
		public function main2()
		{
			this.init();
		}
		
		protected function init():void
		{

			var tex:TextField = new TextField();
			tex.text = "drag and draw Line";
			this.addChild(tex);
			this.stage.align = StageAlign.TOP_LEFT;
			this.stage.scaleMode = StageScaleMode.NO_SCALE;
			
			this.timer = new Timer(50);
			this.timer.addEventListener(TimerEvent.TIMER,this.addPoint);
			
			var obj:Object = new Object();
			obj.x = 100;
			obj.y = 100;
			obj.z = 100;
			this.setObject(obj);
			
			obj = new Object();
			obj.x = -100;
			obj.y = -100;
			obj.z = -100;
			this.setObject(obj);
			
			obj = new Object();
			obj.x = -400;
			obj.y = -400;
			obj.z = -400;
			this.setObject(obj);
			
			
			this._camera = new Object();
			this._camera.screenZ = this.screenZ;
			this._camera.x = 0;
			this._camera.y = 0;
			this._camera.z = -2000;
			
			this.stage.addEventListener(MouseEvent.MOUSE_DOWN,this.mouseDownEventHandler);
			this.addEventListener(Event.ENTER_FRAME,this.render);
		}
		
		protected function render(e:Event):void
		{
			this.rotAxisY(Math.PI*2/100);
			var ary:Array = this.screenView();
			this.graphics.clear();
			this.graphics.lineStyle(5,0x000000,1);
			this.graphics.moveTo(ary[0].x + this.stage.stageWidth/2,ary[0].y + this.stage.stageHeight/2);
			for(var i:uint=1;i<ary.length;i++)
			{
				trace(ary[i].x);
				if(ary[i].z > this._camera.z)
				{
					
					this.graphics.lineTo(ary[i].x + this.stage.stageWidth/2,ary[i].y + this.stage.stageHeight/2);
				}
			}
		}
		
		protected function mouseDownEventHandler(e:MouseEvent):void
		{
			this.stage.addEventListener(MouseEvent.MOUSE_UP,this.mouseUpEventHandler);
			this.timer.start();
		}
		protected function mouseUpEventHandler(e:MouseEvent):void
		{
			this.stage.addEventListener(MouseEvent.MOUSE_DOWN,this.mouseDownEventHandler);
			this.timer.stop();
		}
		
		protected function addPoint(e:TimerEvent):void
		{
			var dx:Number = this.stage.mouseX -this.stage.stageWidth/2;
			var dy:Number = this.stage.mouseY - this.stage.stageHeight/2;
			
			var obj:Object = new Object();
			obj.x = dx * ((-this._camera.z)/this._camera.screenZ);
			obj.y = dy * ((-this._camera.z)/this._camera.screenZ);
			
			obj.z = 100;
			this..setObject(obj);
		}
		
		public function setObject(obj:Object,nam:String = ""):*
		{
			if(nam != "")
			{
				this._objectArray[nam] = obj;
				return nam;
			}
			else
			{
				var num:uint = this._objectArray.push(obj);
				return num-1;
			}
			return 0;
		}
		
		//スクリーン座標に変換
		public function screenView():Array
		{
			var viewAry:Array = new Array();
			
			for(var prop:Object in this._objectArray)
			{
				var obj:Object = new Object();
				obj.x = (this._objectArray[prop].x - this._camera.x)*(this._camera.screenZ/(this._objectArray[prop].z - this._camera.z));
				obj.y = (this._objectArray[prop].y - this._camera.y)*(this._camera.screenZ/(this._objectArray[prop].z - this._camera.z));
				obj.z = this._camera.screenZ/(this._objectArray[prop].z - this._camera.z);
				obj.object = this._objectArray[prop];
				viewAry[prop] = obj;
			}
			return viewAry;
		}
		
		// X軸回転
		// @param theta = ラジアン
		public function rotAxisX(theta:Number = 0):void
		{
			var _dx:Number;
			var _dy:Number;
			var _dz:Number;
			var rot:Number = theta;
			
			for(var prop:Object in this._objectArray)
			{
				_dy =  this._objectArray[prop].y*Math.cos(rot) + this._objectArray[prop].z*Math.sin(rot);
				_dz = -this._objectArray[prop].y*Math.sin(rot) + this._objectArray[prop].z*Math.cos(rot);
				
				this._objectArray[prop].y = _dy;
				this._objectArray[prop].z = _dz;
			}
		}
		
		
		
		// Y軸回転
		// @param theta = ラジアン
		public function rotAxisY(theta:Number = 0):void
		{
			var _dx:Number;
			var _dy:Number;
			var _dz:Number;
			var rot:Number = theta;
			
			for(var prop:Object in this._objectArray)
			{
				_dx = this._objectArray[prop].x*Math.cos(rot) - this._objectArray[prop].z*Math.sin(rot);
				_dz = this._objectArray[prop].x*Math.sin(rot) + this._objectArray[prop].z*Math.cos(rot);
				
				this._objectArray[prop].x = _dx;
				this._objectArray[prop].z = _dz;
			}
		}
		
		
		
		// Z軸回転
		//@param theta = ラジアン
		public function rotAxisZ(theta:Number = 0):void
		{
			var _dx:Number;
			var _dy:Number;
			var _dz:Number;
			var rot:Number = theta;
			
			for(var prop:Object in this._objectArray)
			{
				_dx =  this._objectArray[prop].x*Math.cos(rot) + this._objectArray[prop].y*Math.sin(rot);
				_dy = -this._objectArray[prop].x*Math.sin(rot) + this._objectArray[prop].y*Math.cos(rot);
				
				this._objectArray[prop].x = _dx;
				this._objectArray[prop].y = _dy;
			}
		}
	}
}