Question

我使用滑块调整图像的alpha属性（不透明度）。但它没有按预期工作。当alpha设置为1（即滑块上的最大值）时，图像会显示，但只要我滑动到小于1的任何值，图像就会完全消失。即在所有vales btw 0和0.99没有图像......我猜测它是将alpha设置为0表示所有小于1的值。我是as3的新手。这就是我所拥有的

包{

import flash.display.*;
import flash.events.*;

import fl.controls.Slider;
import fl.events.SliderEvent;


public class PicturePanel extends MovieClip {
sliderA.width=125;
        sliderA.x=425;
        sliderA.y=15;
        addChild(sliderA);
        sliderA.addEventListener(SliderEvent.THUMB_DRAG, FnNewA);
        sliderA.minimum=0;
        sliderA.maximum=100;
        sliderA.value=100;
        pctPicture.txtA.text= "alpha = " + (sliderA.value/100);



function FnNewA(event:SliderEvent):void {

   pctPicture.txtA.text=""+event.value/100;
        chief.gameBoard.gameNewPctA=event.value/100;
        chief.gameBoard.FnEditPicture();

    }


public function FnPanelSliderStart():void {

sliderA.value=chief.gameBoard.gameNewPctA*100;
        pctPicture.txtA.text=""+sliderA.value;

}
 }

package 
{

import flash.display.*;
import flash.geom.*;
import flash.events.*;
import fl.motion.MatrixTransformer;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.display.Loader;
import flash.net.URLRequest;

import flash.filters.ConvolutionFilter;

import flash.text.*;

import flash.filters.DropShadowFilter;


public class GameBoard extends MovieClip
{
private var newPctA:Number = 1;


public function FnEditPicture():void
    {
         arraySprite[chief.gamePanel.numSprite].getChildAt(0).alpha = gameNewPctA; 

}


private function FnPanelPictureStartOne():void
    {
                    newPctA = 1;            
        pctPanel.FnPanelSliderStart();
    }

private function FnPanelPictureStartTwo():void
    {

newPctA =arraySprite[chief.gamePanel.numSprite].getChildAt(0).alpha;


        pctPanel.FnPanelSliderStart();
    }



public function set gameNewPctA(value:int):void
    {
        newPctA = value;
    }
    //--------------------------------------------------
    public function get gameNewPctA():int
    {
        return newPctA;
    }
}

Answer 1

你的getter和setter函数返回/取整数而不是数字。 Int将始终向下舍入到最接近的整数（在这种情况下为0）。使用数字代替获取小数值。

public function set gameNewPctA(value:Number):void
    {
        newPctA = value;
    }
//--------------------------------------------------
public function get gameNewPctA():Number
    {
       return newPctA;
    }
}

as3 alpha属性，滑块无法按预期工作

1 个答案: