Flash AS3：如何在另一个Rect中调整Rect的大小？

Question

I've got a tricky one that's stumping me, could you take a quick look over it please...

I draw a rectangle within another rectangle like this (I use it as a mask):

CanvasBorder.graphics.beginFill(0xf0ff00,0.1);  
CanvasBorder.graphics.drawRect(100,100,550, 300);
CanvasBorder.graphics.drawRect((stage.stageWidth/2-Canvas.width/2),(stage.stageHeight/2-Canvas.height/2),250, 150);
CanvasBorder.graphics.endFill();

effectively its a 550x300 box with a 250x150 cutout.

Within one of my functions I need to resize the INNER 'cut-out' box from 250x150 to 150x100 - but keep the OUTER box exactly the same.

Normally when I'd resize a normal rectangle I'd do this:

rectangle .width = 150;
rectangle .height = 100;

But this solution doesn't work and I don't know how to reference the cutout of the shape. Any ideas please I'm really struggling with this one and can't find anything on google.

thanks for your time

ChainsawDR

Answer 1

Maybe you can create ANOTHER Sprite or Shape like this:

// somewhere in your code declare the rectangleMask
var rectangleMas:Shape;


rectangleMask = new Shape();
// draw the rectangle the same way
// and add it to CanvasBorder (I assume that CanvasBorder is a DisplayObjectContainer)
CanvasBorder.addChild(rectangleMask);

Then you can just do the resize as you want:

rectangleMask.witdth = 150;
rectangleMask.height = 100;

If you want that rectangle to be a mask of CanvasBorder you can do this:

CanvasBorder.mask = rectangleMask;