Touchlib源码注释-----TUIOObject.as TUIOEvent.as TUIOCursor.as

最新推荐文章于 2018-06-04 11:04:07 发布

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最新推荐文章于 2018-06-04 11:04:07 发布

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分类专栏： Flex/Flash/AS3 OpenSource 文章标签： function string actionscript null import debugging

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本文详细解析了TUIO触控库中的TUIOObject、TUIOEvent及TUIOCursor类，介绍了这些类如何管理和响应触摸事件，包括创建、移动和销毁过程中的事件分发。

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本文链接：http://blog.youkuaiyun.com/li_007/archive/2010/01/05/5134270.aspx

开拓进取的小乌龟------->优快云点滴点点滴滴Blog

还是继续把剩余的整理贴出来。欢迎大家指正。

package com.touchlib { import flash.display.Sprite; import flash.display.DisplayObject; //import flash.display.InteractiveObject; //import flash.display.MovieClip; import flash.geom.Point; //import flash.utils.Timer; //import flash.events.MouseEvent; //import flash.events.Event; // // 定义一个触摸点类，其实在这个类里面注意一下传进来的参数o // 它是这个类的一个关键，也是整个lib的一个关键，由它来dispatcher // 所有的touch事件，当然也是它来响应touch事件 // public class TUIOObject { public var x:Number; public var y:Number; public var oldX:Number; public var oldY:Number; public var dX:Number; public var dY:Number; public var area:Number; public var TUIOClass:String; // cur or Obj.. public var sID:int; public var ID:int; public var angle:Number; public var pressure:Number; private var isNew:Boolean; public var isAlive:Boolean; public var obj; public var spr:Sprite; public var trlx:Sprite; public var color:int; var aListeners:Array; public function TUIOObject (cls:String, id:int, px:Number, py:Number, dx:Number, dy:Number, sid:int = -1, ang:Number = 0, o = null) { aListeners = new Array(); TUIOClass = cls; ID = id; x = px; y = py; oldX = px; oldY = py; dX = dx; dY = dy; sID = sid; angle = ang; isAlive = true; var c = int(Math.random() * 4); if(c == 0) color = 0xff0000; else if(c == 1) color = 0x00ffff; else if(c == 2) color = 0x00ff00; else if(c == 3) color = 0x0000ff; // 创建调试的光标，当debugMode为true事，绘制一个粉红色的圆 spr = new TUIOCursor(ID.toString()); spr.x = x; spr.y = y; try { obj = o; } catch (e) { obj = null; } //trace("Start " + ID + ", " + sID + " (" + int(px) + "," + int(py) + ")"); isNew = true; } // // 当第一次创建一个TUIOObject对象时，需要发送TUIO_DOWN和TUIO_OVER事件 // public function notifyCreated() { if(obj) { try { // 将对象舞台坐标转化为显示对象坐标 var localPoint:Point = obj.parent.globalToLocal(new Point(x, y)); //trace("Down : " + localPoint.x + "," + localPoint.y); // 分别dispatcher TUIO_OVER和TUIO_DOWN事件 obj.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_OVER, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); obj.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_DOWN, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); } catch (e) { trace("Failed : " + e); // trace(obj.name); obj = null; } } } // 调用这个函数，说明在TUIOObject数组中存在当前点，也即是当前点移动了。 public function setObjOver(o:DisplayObject) { try { if(obj == null) { obj = o; if(obj) { // 当已存在TUIOObject对象，而obj对象为空时，需要将当前对象传递进来的显示对象 //（也即是当前点下面最上层显示对象，是事件的发送者，事件也是产生于它），故需要 // 赋值给obj对象，并dispatcher TUIO_OVER事件 var localPoint:Point = obj.parent.globalToLocal(new Point(x, y)); obj.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_OVER, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); } } else if(obj != o) { // 当已存在TUIOObject对象，而obj对象与传递进来的显示对象不一致，说明当前点移动了，并且移出了 // 原来的obj对象的显示范围，故需要对原来对象dispatcher TUIO_OUT事件 var localPoint:Point = obj.parent.globalToLocal(new Point(x, y)); obj.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_OUT, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); if(o) { // 当已存在TUIOObject对象，而obj对象与传递进来的显示对象不一致,并且传递进来的也是非空显示对象， // 说明当前点移动了，并且移出了原来的obj对象的显示范围，故需要对当前对象dispatcher TUIO_OVER事件 localPoint = obj.parent.globalToLocal(new Point(x, y)); o.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_OVER, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); } obj = o; } } catch (e) { // trace("ERROR " + e); } } // 将所有需要dispatcher的TUIOObject对象添加到数值中 public function addListener(reciever:Object) { aListeners.push(reciever); } // 从数组中删除非alive状态的TUIOObject对象 public function removeListener(reciever:Object) { for(var i:int = 0; i<aListeners.length; i++) { if(aListeners[i] == reciever) aListeners.splice(i, 1); } } public function kill() { //trace("Die " + ID); var localPoint:Point; if(obj && obj.parent) { // 将当前TUIOObject对象中的显示对象清除，并让当前点dispatcher TUIO_OUT和TUIO_UP事件 localPoint = obj.parent.globalToLocal(new Point(x, y)); obj.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_OUT, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); obj.dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_UP, true, false, x, y, localPoint.x, localPoint.y, 0, 0, obj, false,false,false, true, 0, TUIOClass, ID, sID, angle)); } obj = null; // 为什么要所有都TUIO_UP有点不理解 for(var i:int=0; i<aListeners.length; i++) { localPoint = aListeners[i].parent.globalToLocal(new Point(x, y)); aListeners[i].dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_UP, true, false, x, y, localPoint.x, localPoint.y, 0, 0, aListeners[i], false,false,false, true, 0, TUIOClass, ID, sID, angle)); } } // 这个有点不理解 public function notifyMoved() { var localPoint:Point; for(var i:int=0; i<aListeners.length; i++) { //trace("Notify moved"); localPoint = aListeners[i].parent.globalToLocal(new Point(x, y)); aListeners[i].dispatchEvent(new TUIOEvent(TUIOEvent.TUIO_MOVE, true, false, x, y, localPoint.x, localPoint.y, 0, 0, aListeners[i], false,false,false, true, 0, TUIOClass, ID, sID, angle)); } } } } }

TUIOEvent.as文件

package com.touchlib { import flash.display.DisplayObject; import flash.display.DisplayObjectContainer; import flash.events.Event; public class TUIOEvent extends Event { public var TUIOClass:String; public var sID:int; public var ID:int; public var angle:Number; public var stageX:Number; public var stageY:Number; public var localX:Number; public var localY:Number; public var oldX:Number; public var oldY:Number; public var buttonDown:Boolean; public var relatedObject:DisplayObject; public static const TUIO_MOVE:String = "com.touchlib.TUIOEvent.TUIO_MOVE"; public static const TUIO_DOWN:String = "com.touchlib.TUIOEvent.TUIO_DOWN"; public static const TUIO_CLICK:String = "com.nui.TUIOEvent.TUIO_CLICK"; //double tap-click public static const TUIO_UP:String = "com.touchlib.TUIOEvent.TUIO_UP"; public static const TUIO_OVER:String = "com.touchlib.TUIOEvent.TUIO_OVER"; public static const TUIO_OUT:String = "com.touchlib.TUIOEvent.TUIO_OUT"; // 根据Actionscript 3的继承机制，编写自己的事件类 public function TUIOEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, stageX:Number = 0, stageY:Number = 0, localX:Number = 0, localY:Number = 0, oldX:Number = 0, oldY:Number = 0, relatedObject:DisplayObject = null, ctrlKey:Boolean = false, altKey:Boolean = false, shiftKey:Boolean = false, buttonDown:Boolean = false, delta:int = 0, TUIOClass:String = "2Dcur", ID:int = -1, sID:int = -1, angle:Number = 0.0) { this.TUIOClass = TUIOClass; this.sID = sID; this.ID = ID; this.angle = angle; this.stageX = stageX; this.stageY = stageY; this.localX = localX; this.localY = localY; this.oldX = oldX; this.oldY = oldY; this.buttonDown = buttonDown; this.relatedObject = relatedObject; super(type, bubbles, cancelable); // super(type, bubbles, cancelable, localX, localY, relatedObject, ctrlKey, altKey, shiftKey, buttonDown, delta); } } }

TUIOCursor.as文件

package com.touchlib { import flash.display.Sprite; import flash.text.TextFormat; import flash.text.TextField; import flash.text.TextFieldAutoSize; // 此类的作用是在调试状态下，绘制一个粉红色的圆来表示当前触摸点 public class TUIOCursor extends Sprite { // 声明一个动态文本用来显示当前触摸点的id private var DEBUG_TEXT:TextField; public function TUIOCursor(debugText:String) { super(); if (TUIO.debugMode) { // Draw us the lil' circle graphics.beginFill(0xFF00FF , 1); graphics.drawCircle(-5 , -5, 10); graphics.endFill(); // Add textfield for debugging, shows the cursor id if (debugText != '' || debugText != null) { var format:TextFormat = new TextFormat(); DEBUG_TEXT = new TextField(); format.font = 'Verdana'; format.color = 0xFFFFFF; format.size = 10; DEBUG_TEXT.defaultTextFormat = format; DEBUG_TEXT.autoSize = TextFieldAutoSize.LEFT; DEBUG_TEXT.background = true; DEBUG_TEXT.backgroundColor = 0x000000; DEBUG_TEXT.border = true; DEBUG_TEXT.text = ''; DEBUG_TEXT.appendText(' '+debugText+' '); DEBUG_TEXT.x = 8; DEBUG_TEXT.y = -13; addChild(DEBUG_TEXT); } else { // hide cursor } } } } }