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DarkBASIC Professional Discussion / Detecting front/back of a plane?

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enderleit
19
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Joined: 30th May 2007
Location: Denmark
Posted: 18th Feb 2011 20:26
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I have this idea of "bouncing" rays off of rotating planes, and the normal of the plane is quite easy to get (object angle), but how do I know if the ray hits the plane on the front side or the back side?

- Martin Enderleit
http://sites.google.com/site/menderleit
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enderleit
19
Years of Service
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Joined: 30th May 2007
Location: Denmark
Posted: 18th Feb 2011 20:31
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Actually I got an idea right after I submitted this...

I could just check the angle between the plane normal and the beam, and anything between -90 and +90 of would be on the front, the rest would be on the back... I think...

- Martin Enderleit
http://sites.google.com/site/menderleit
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