actionscript-3 - AS3 - 将图像缩放到全宽或全高而不切断

Question

我需要在保持 AS3 中的纵横比的情况下缩放图像。它应该被缩放到完整的舞台大小，但不应该被切断。

怎么做？

谢谢你，乌利

Answer 1

像这样的东西应该工作：

// 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;