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Question: what is a good general-purpose CAD representation format?
If you have high-resolution constraints and very particular surfaces with particular curves, then it seems wrong to represent them as a collection of fine-grained triangles especially if the triangles don't actually correspond to the desired curvature.
There is a difference between representation format and rendering format. See [[faq]].
# Representation formats
* implicitcad f-reps ? these might be two separate techniques.
* tessellated polyhedral triangle meshes
* smoothed quads subdivision surface (catmull-clark etc)
* NURBS
* b-splines
* bezier curves
* CSG boolean representation (unevaluated)
# Edge cases
* high-resolution, smooth surface with particular exact shape that must be transmitted to the CAM/CNC tool with certain specifications
* intersection of high-resolution curves between two surfaces
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