Question

I am working on a Action Script 3.0 application , in which i ill be allowed to load the image and make them draggable. Consider i am loading the deer image and making it as draggable.
Problem with this is , if i click on the translucent area ( white space around the bitmap ), i dont want the bitmap to draggable.is there any way to draw the deer boundary region exactly without the white space around it.

Answer 1

You can use BitmapData methods to get each pixel color, and then, you can either :

• On creation, for each pixel if it’s not fully transparent (!= 0) you can draw a point of a Shape, which will be transparent, and make it dragable in place of your bitmap (as noticed in comment, it will be quite CPU consuming, so use the second method)
• On click, get the click coordinate relative to the bitmap, check if the pixel is transparent and make it drag only if it’s not.

In either way, that will be quite CPU consuming. You may also consider convert your bitmap to a vector image (Sprite). This will allow flash to detect real images boundaries.