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3 Dimensional Chat / Culling Question

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iac249
21
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Joined: 26th Mar 2003
Location: USA
Posted: 15th May 2003 18:41
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I'm a little new to 3d programming, so this may be an easy question for some. I understand DBPro uses a culling system so that faces obscured from camera view (perhaps obstructed by a hill or model) are not rendered. Is this correct?

And if it is correct, would it be possible in outdoor scenes to create a "clipping" plane (the plane object) in which the user could adjust its z-depth in order to improve performance on low-end 3d cards?
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APEXnow
Retired Moderator
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Joined: 15th Apr 2003
Location: On a park bench
Posted: 15th May 2003 19:30 Edited at: 15th May 2003 19:34
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You don't need to create a clipping plain, the SET CAMERA RANGE does this for you.

Also, culling is actually the process of hiding faces of an object which do not need to be drawn.

EDIT: Even if an object is behind a hill, it will still be drawn, but the back of the object will not. The drawing process also uses a Z buffer so that objects further away are drawn first before closer ones. The Z buffer acts on a pixel basis for faces of objects so you still get correct clipping effects if two objects intersect each other.

"Man who looses key to woman's appartment...... He get no nookie" - A wise chinese man.
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