Hi
I need to detect mouse events on a movieclip's non-white content
rather than it's bounding rectangle even where the contents are
bitmap based.
I'm putting together an activity for kids where they create a piece
of art by dragging and dropping visual elements onto their canvas,
then they can subsequently select these elements to move them, resize
them, rotate, delete them etc.
The user must be able to accurately select these elements even when
they are overlapping – so long as a movieClip is partially visible,
it needs to be selectable. The problem of course is that the
movieClips are responding to mouse events as soon as the mouse enters
their bounding rectangle.
The items they drag are sourced from photographic material and need
to remain as bitmap–based movieClips. They are a collection of
everyday items: fruit, plants, vehicles, people etc and currently
they are imported as PNGs with an alpha channel.
One option would be to make a vector graphic version of every single
graphic, have that layered behind in each clip and have that detect
the mouse events – but what a pain! There has to be a simpler way?
I guess I need seomething like a background transparent blending mode
– but there isn't one:(
I'm sure others have tackled this problem. Anyone?
David
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