Visibility and Hidden Surface Removal
Visibility and Hidden Surface Removal
Visibility and Hidden Surface Removal
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List Priority (8)<br />
• If these tests fail, P obscures Q. However,<br />
we can test if Q obscures P (so that the<br />
order in the list can be switched to scanconvert<br />
Q first) in the following way<br />
(replacing steps 3 <strong>and</strong> 4):<br />
– is Q entirely on the opposite side of P's plane,<br />
from the viewpoint?<br />
– is P entirely on the same side of Q's plane, from<br />
the viewpoint?<br />
© Machiraju/Zhang/Möller<br />
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