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Modeling

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Mirror Rollup

Modeling related functions are good if you want to perform certain operations based on UVs while modeling.

Smooth by UV Shells

This method is working similarly to simple Auto Smooth, but this version takes UV seams in count and places a hard edge where there is a UV seam. You can set up the Smoothing Angle as well.

Perform Clean Up

This function is important if you want to construct a correct UV without artifacts and unnecessary data. This action performs several clean up procedures like.

  • Eliminating Bad Vertices (where a single vertex is part of 3 or more UV seams)
  • Eliminating Isolated Mapping Vertices (vertices floating around, basically Dead struct)
  • Eliminates shared edges where a seam is part of multiple UV shells. (more than 2)

With this clean up, you can drastically reduce the chance of generating invalid UVs.