Irregular shaped buttons redux

Judy Perry jperryl at ecs.fullerton.edu
Fri Nov 19 13:03:03 CST 2004


Sorry to be so dense here, but I'm not seeing how to use the within()
function.

I suppose I could set *either* image as the object, but the loc of both
are constantly changing, and how do I check for within() four sets of
points?

It's looking (to me at least) like the intersect function *should* be the
one to use, except that transparent areas of graphics are not treated the
same by the intersect function as they are with the within function.

Am I wrong about this?

Thank you again,

Judy

On Tue, 16 Nov 2004, Scott Rossi wrote:

> If you need to simulate collision detection with an irregular object/edge,
> you could use the within() function to test a point location within a
> transparent image.  The within() function will only return true when the
> point is within an opaque region of the image.



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