Geometric primitives (cont...)
Spheres
- Simply center coordinates and a radius
- Often difficult to render, usually converted into a list of
triangles that approximate a sphere
- Hardware technology exists (e.g. 'Pixel Planes') to draw spheres
directly, greatly improving performance
3D Text
Vectors (3D Lines)
Pointlists
- Group of points
- Useful for drawing airfield landing lights, for example
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