How to handle the top/bottom (poles) of sphere in a quad mesh?

dilevin / computer-graphics-meshes

Computer Graphics Assignment about Meshes

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How to handle the top/bottom (poles) of sphere in a quad mesh? #26

Closed NPTP closed 4 years ago

NPTP commented 4 years ago

Hi, question is mostly in the title. How do we have closed poles on each end of the sphere using only quads in sphere.cpp? As far as I can tell we need the poles to use triangles to create a watertight mesh. Do we simply duplicate one vertex of the quad at the poles to create the appearance triangles there?

Thanks!

chenjas commented 4 years ago

I believe multiple points of a quad can be the same vertex. Another possibility for simplicity is defining multiple vertices that occupy the same geometric position for the poles.