Visibility and Hidden Surface Removal
Visibility and Hidden Surface Removal
Visibility and Hidden Surface Removal
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3. Bounding Objects<br />
• Operations with objects are expensive!<br />
• Can we do a quick test with an<br />
approximation of the object?<br />
• Answer - yes!<br />
• Technique - approximation through<br />
“bounding volumes” or “extents”<br />
• avoid unnecessary clipping<br />
avoid unnecessary comparisons between<br />
objects or their projections<br />
© Machiraju/Zhang/Möller<br />
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