ActionScript 3显然我无法访问动画片段

我创建了缩放功能，但是当我尝试缩放bg_image时没有任何事情发生。这就像我无法访问它的属性。有谁知道为什么？ :)ActionScript 3显然我无法访问动画片段

Ty！

主要类

package 
{ 
import flash.display.MovieClip; 
import flash.utils.Dictionary; 
import flash.events.MouseEvent; 
import flash.display.Sprite; 
import flash.text.TextField; 
import fl.controls.Button; 
import fl.controls.List; 
import flash.utils.Timer; 
import flash.events.TimerEvent; 
import flash.events.Event; 

import flash.display.Shape; 
import fl.transitions.Fly; 
import fl.motion.MatrixTransformer; 
import flash.events.KeyboardEvent; 
import flash.geom.Matrix; 
import flash.geom.Point; 
import flash.ui.Mouse; 

public class Main extends Sprite 
{ 
    // Zoom 

    public static var scale:Number = 1; 

    public var spImage:Sprite; 
    public var mat:Matrix; 
    public var mcIn:MovieClip; 
    public var mcOut:MovieClip; 
    public var boardWidth:int = 980; 
    public var boardHeight:int = 661; 

    public var boardMask:Shape; 

    public var externalCenter:Point; 
    public var internalCenter:Point; 

    public const scaleFactor:Number = 0.8; 

    public var minScale:Number = 0.25; 
    public var maxScale:Number = 10.0; 

    // ------------------------ 

    // Grafikk 
    public var bg_image:Sprite; 
    //------------------------------- 



    //----------------------------------------------- 

    public var routeArray:Array; 

    public var startList:List = new List(); 
    public var sluttList:List = new List(); 

    public var S_Norway:Dictionary = new Dictionary(); 
    public var S_Australia:Dictionary = new Dictionary(); 
    public var S_China:Dictionary = new Dictionary(); 
    public var S_South_Africa:Dictionary = new Dictionary(); 
    public var S_Brazil:Dictionary = new Dictionary(); 
    public var S_USA:Dictionary = new Dictionary(); 
    public var S_France:Dictionary = new Dictionary(); 

    // ------------------------------------------------------ 

    public static var airportDict:Dictionary = new Dictionary(); 


    public function Main() 
    { 

     addEventListener(Event.ADDED_TO_STAGE, init); 

     // --------------------------------- 



    } 

    public function init(e:Event):void 
    { 
     bg_image = new Image(0, 0); 
     this.addChild(bg_image); 

     bg_image.addEventListener(MouseEvent.CLICK, mouseCoordinates); 

     removeEventListener(Event.ADDED_TO_STAGE, init); 

     // Zoom 

     this.graphics.beginFill(0xB6DCF4); 
     this.graphics.drawRect(0,0,boardWidth,boardHeight); 
     this.graphics.endFill(); 

     spImage = new Sprite(); 
     this.addChild(spImage); 

     boardMask = new Shape(); 
     boardMask.graphics.beginFill(0xDDDDDD); 
     boardMask.graphics.drawRect(0,0,boardWidth,boardHeight); 
     boardMask.graphics.endFill(); 
     boardMask.x = 0; 
     boardMask.y = 0; 
     this.addChild(boardMask); 
     spImage.mask = boardMask; 

     minScale = boardWidth/bg_image.width; 

     mcIn = new InCursorClip(); 
     mcOut = new OutCursorClip(); 

     bg_image.addChild(mcIn); 
     bg_image.addChild(mcOut); 

     bg_image.scaleX = minScale; 
     bg_image.scaleY = minScale; 

     spImage.addChild(bg_image); 
     spImage.addChild(mcIn); 
     spImage.addChild(mcOut); 

     spImage.addEventListener(MouseEvent.MOUSE_DOWN, startDragging); 
     stage.addEventListener(MouseEvent.MOUSE_UP, stopDragging); 

     spImage.addEventListener(MouseEvent.CLICK, zoom); 

     stage.addEventListener(KeyboardEvent.KEY_DOWN, keyHandler); 
     stage.addEventListener(KeyboardEvent.KEY_UP, keyHandler); 

     S_USA["x"] = 180.7; 
     S_USA["y"] = 149.9; 
     S_USA["bynavn"] = "New York"; 

     S_Norway["x"] = 423.7; 
     S_Norway["y"] = 76.4; 
     S_Norway["bynavn"] = "Oslo"; 

     S_South_Africa["x"] = -26; 
     S_South_Africa["y"] = 146; 
     S_South_Africa["bynavn"] = "Cape Town"; 

     S_Brazil["x"] = 226; 
     S_Brazil["y"] = 431.95; 
     S_Brazil["bynavn"] = "Rio de Janeiro"; 

     S_France["x"] = 459.1; 
     S_France["y"] = 403.9; 
     S_France["bynavn"] = "Paris"; 

     S_China["x"] = 716.2; 
     S_China["y"] = 143.3; 
     S_China["bynavn"] = "Beijing"; 

     S_Australia["x"] = 809.35; 
     S_Australia["y"] = 414.95; 
     S_Australia["bynavn"] = "Sydney"; 

     // ---------------------------------------------------- 

     airportDict["USA"] = S_USA; 
     airportDict["Norway"] = S_Norway; 
     airportDict["South Africa"] = S_South_Africa; 
     airportDict["Brazil"] = S_Brazil; 
     airportDict["France"] = S_France; 
     airportDict["China"] = S_China; 
     airportDict["Australia"] = S_Australia; 

     for (var k:Object in airportDict) 
     { 
      var value = airportDict[k]; 
      var key = k; 
      startList.addItem({label:key, data:key}); 
      sluttList.addItem({label:key, data:key}); 
      var airport:Airport = new Airport(key,airportDict[key]["bynavn"]); 
      airport.koordinater(airportDict[key]["x"], airportDict[key]["y"]); 
      bg_image.addChild(airport); 
     } 

     // -------------------------------------------- 
     // -------------------------------------------- 
     // ----------------------------------------------- 


    } 

    private function startDragging(mev:MouseEvent):void 
    { 
     spImage.startDrag(); 
    } 

    private function stopDragging(mev:MouseEvent):void 
    { 
     spImage.stopDrag(); 
    } 


    private function zoom(mev:MouseEvent):void 
    { 
     if ((!mev.shiftKey)&&(!mev.ctrlKey)) 
     { 
      return; 
     } 
     if ((mev.shiftKey)&&(mev.ctrlKey)) 
     { 
      return; 
     } 

     externalCenter = new Point(spImage.mouseX,spImage.mouseY); 
     internalCenter = new Point(bg_image.mouseX,bg_image.mouseY); 

     if (mev.shiftKey) 
     { 
      bg_image.scaleX = Math.max(scaleFactor*bg_image.scaleX, minScale); 
      bg_image.scaleY = Math.max(scaleFactor*bg_image.scaleY, minScale); 
     } 
     if (mev.ctrlKey) 
     { 
      trace("Minscale: ", maxScale) 
      trace("Returned: ", 1/scaleFactor*bg_image.scaleY) 
      bg_image.scaleX = Math.min(1/scaleFactor*bg_image.scaleX, maxScale); 
      bg_image.scaleY = Math.min(1/scaleFactor*bg_image.scaleY, maxScale); 
     } 

     mat = this.transform.matrix.clone(); 

     MatrixTransformer.matchInternalPointWithExternal(mat,internalCenter,externalCenter); 

     bg_image.transform.matrix = mat; 
    } 

    private function keyHandler(ke:KeyboardEvent):void 
    { 

     mcIn.x = spImage.mouseX; 
     mcIn.y = spImage.mouseY; 
     mcOut.x = spImage.mouseX; 
     mcOut.y = spImage.mouseY; 

     mcIn.visible = ke.ctrlKey; 
     mcOut.visible = ke.shiftKey; 

     if (ke.ctrlKey || ke.shiftKey) 
     { 
      Mouse.hide(); 
     } 
     else 
     { 
      Mouse.show(); 
     } 
    } 

    private function reise(evt:MouseEvent):void 
    { 
     var new_flight:Flight = new Flight(airportDict[startList.selectedItem.label]["x"],airportDict[startList.selectedItem.label]["y"],airportDict[sluttList.selectedItem.label]["x"],airportDict[sluttList.selectedItem.label]["y"]); 
     bg_image.addChild(new_flight); 
    } 

    private function mouseCoordinates(event: MouseEvent):void 
    { 
     // these are the x and y relative to the object 
     var localMouseX:Number = bg_image.mouseX; 
     var localMouseY:Number = bg_image.mouseY; 
     trace("Local coordinates: ", localMouseX, localMouseY); 

     // these are the x and y relative to the whole stage 
     var stageMouseX:Number = event.stageX; 
     var stageMouseY:Number = event.stageY; 
     trace("Global coordinates: ", stageMouseX, stageMouseY); 
    } 
}

}

图片类：

package { 
import flash.display.Sprite; 
import flash.display.MovieClip; 


public class Image extends Sprite 
    { 

    public function Image(y_:Number, x_:Number) 
    { 
     this.y = y_ 
     this.x = x_ 
    } 

}

}

来源

2014-02-22 user3257755

~~你不必minScale宣布，既不maxScale。~~

bg_image应被声明为Sprite，否则Compiler Error: Implicit coercion... `

public var bg_image:Sprite;

至于你的形象是非常小的，你可能会想你的监听器添加到舞台，而不是图像，这将是非常难以点击这样一个小图像。

而且，这里就是你们的榜样与MOUSE_WHEEL工作，而不是点击 + Ctrl键/移

stage.addEventListener(MouseEvent.MOUSE_WHEEL, zoom); 

private function zoom(mev:MouseEvent):void 
{ 
    mev.delta > 0 ? 
     bg_image.scaleX = bg_image.scaleY = Math.max(scaleFactor * bg_image.scaleX, minScale) : 
     bg_image.scaleX = bg_image.scaleY = Math.min(1/scaleFactor * bg_image.scaleX, maxScale) ; 
}

来源

2014-02-22 13:53:50

对不起，我只是忘了，包括在我的岗位代码的一部分。 minScale和maxScale没有被宣布肯定不是问题。我现在尝试将bg_image更改为Sprite，但这没有什么区别。 – user3257755

好的，图像是否缩小？因为你这样做：'bg_image.scaleX = minScale; bg_image.scaleY = minScale;'在初始化？ –

是的:)原来我没有真正复制所有相关的代码。 – user3257755

ActionScript 3显然我无法访问动画片段

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