Thanks for those suggestions.
I didn't think about Birmapdata.hitTest(), but I had thought about
using getPixel()
Sure, I can use that to decide whether or not the user has clicked on
a non-white area, but that doesn't resolve user confusion. It doesn't
help the user to know which item they are about to select because the
cursor will already have changed when the mouse enters the bounding
rect.
Cheers
David
On 8/02/2007, at 4:05 PM, Jason Boyd wrote:
Also, just looking this up made me notice that as of Flash 8, you
can do
pixel-level hit detection between not only a bitmap and a point, but 2
bitmaps, with alpha threshold support!
BitmapData.hitTest()
On 2/7/07, Jason Boyd <[EMAIL PROTECTED]> wrote:
Check out the BitmapData class, specifically the static loadBitmap
(id)
method for creating an instance from a library symbol, and getPixel
() which
allows checking individual pixel values.
I would think an algorithm that would work would be to iterate
through the
display list, do hitTest() on every clip, and for those that hit,
starting
with the first (which is the highest depth), copy the image data
into a
BitmapData object and do a getPixel() at that spot to test for the
transparent color (which sounds like its white). This would be slow,
presumably. But might redo the objects on stage so that they are
already
Bitmaps or BitmapData.
My 2 cents.
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