Re: [Algorithms] Moving sphere, moving triangle collision

[Charles B. <cb...@cb...>]

This was in game developer magazine two months ago.

At 05:36 PM 8/24/2001 -0700, you wrote:
>Can anyone explain, or point me to somewhere, that does a moving sphere
>versus a static triangle?
>I've checked out most of the obvious references (Graphic Gems, Game Gems,
>Magic Software) and I still haven't come across an example, or paper, which
>has moving sphere versus triangle collision detection. I can detect
>collision between a plane and a moving sphere, but detecting whether or not
>a triangle collides with a triangle is trickier. What's got me stuck is the
>collision with the edges of the triangle. I can determine that the point of
>contact between the sphere and the triangle isn't within the triangle, but I
>can't figure out how to determine point along the sphere's path that it
>intersects with an edge, if it does at all. There's lots of stuff I've read
>which tells how to do a ray/line segment test, but this doesn't help me, as
>my sphere is moving and I can't see away to apply a moving sphere to those
>equations. And most of the code I've come across (gamasutra article and
>others) do collision between the triangle and a moving sphere, but don't
>handle edge collisions.
>Can anyone help?
>
>Thanks,
>Mike
>
>
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----------------------------------------------------
Charles Bloom    cb...@cb...    www.cbloom.com