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After a transformation in polar coordination and a triangulation with matplotlib (Triangulation function), I obtain my figure (it's empty inside) in 3D (mpl_toolkits.mplot3d.art3d.Poly3DCollection).I followed this good example. Now, I would like to cut the plot around y-axis and then to unwrap to a 2D plot keeping the colour map. I think it's a problem of a UV mapping, but I would avoid using blender library. Here an image: From this 3D -> to 2D Any idea? Thanks a lot.

ermanno
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    [here's](https://doc.cgal.org/latest/Surface_mesh_parameterization/index.html) a good (if somewhat high-level) reference for how various uv mapping algorithms compare. There's even a library for binding to cgal binaries to python (you'll have to install cgal separately from the bindings) – Aaron Nov 05 '20 at 19:01
  • Does this answer your question? [Automatically generating UV coordinates algorithms](https://stackoverflow.com/questions/18578943/automatically-generating-uv-coordinates-algorithms) – Aaron Nov 05 '20 at 20:14

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