How to build a 3d diamond in openframeworks for iOS? I'm having a hard time finding useful tutorials for 3d rendering in openframeworks, and I am coming from Processing.
I think there are two sides of the story:
For the 1st part I recommend starting with the oF documentation on ofVbo. The article shows you how to render an icosahedron which with flat shading (and optionally perhaps basic subdivision) can look like a diamond
The point is you need to get used to working with vbos, vertices and faces. Once you've got the hang of that you can explore geometry
You can work out the indices to draw a common diamond (using the polar to cartesian formula and a bit of offsetting/scaling):
Or you can explore geometry further by looking at:
If you have the time also explore resources from geometers like Paul Bourke or George Hart