AS3-將圖片縮放至全寬或全高而不會裁切

Question

我需要在AS3中保持高寬比的情況下縮放圖像。 它應按比例縮放到整個舞台大小，但任何內容都不應刪減。

怎么做？

謝謝你烏里

Answer 1

這樣的事情應該起作用：

// set the scale to fit the width of the image to the width of the stage     
var scale:Number =  stage.stageWidth / myImage.width;

// if the height of the image will be taller than the stage,
// set the scale to fit the height of the image to the height of the stage
if(myImage.height * scale > stage.stageHeight){
    scale = stage.stageHeight / myImage.height;
}   

// apply the scale to the image
myImage.scaleX = myImage.scaleY = scale;