Constructive solid geometry - union, intersection, difference

[drewbt]

It would be good to be able to set each shape as union, intersection or difference, for modelling complex shapes. Here is a more in depth explanation - https://en.wikipedia.org/wiki/Constructive_solid_geometry

Also handy are extrusions - https://www.sciencedirect.com/topics/engineering/path-extrusion

[desandro]

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Given the 2D nature of Zdog's underlying pseudo-3D math, I don't think constructive solid geometry is actually feasible. The primitives are 2D and don't have 3D volume with which to use for construction. But I'm a 3D graphics newbie, so maybe there's a technique I'm not aware of.

Extrusion, however, could be done.