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Out of curiosity, why did you fall out of love with SDF?

Also curious why BREP is represented through a language rather than e.g. a tree or graph (or maybe this is just a language shortcut, and the idea is that the language is used to specify BREP objects?)

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I want my data to be compatible with existing CAM tools so I can get parts machined.

I like BREP via language, it allows great flexibility and ability to query geometry at run time, e.g. Find all vertical edges to apply radius.

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