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Note the preview is not accurate and warnings may not indicate real issues.
UV Unwrap Node
The UV Unwrap Node generates a UV map islands based on a selection of seam edges. The node implicitly performs a Pack Islands operation upon completion, because the results may not be generally useful otherwise.
The bpy.ops.uv.unwrap operator performs a similar operation in the UV editor. Unlike the Unwrap operator, the node doesn’t perform aspect ratio correction, because it is trivial to implement with a Vector math.
Faces to participate in the unwrap operation. UVs that are part of any other face will not be affected.
Edges to mark where the mesh is “cut” for the purposes of unwrapping.
The distance to leave between UV islands.
- Fill Holes
Virtually fill holes in mesh before unwrapping, to better avoid overlaps and preserve symmetry.
- Angle Based:
This method gives a good 2D representation of a mesh
Uses LSCM (Least Squares Conformal Mapping). This usually gives a less accurate UV mapping than Angle Based, but works better for simpler objects
The generated UV coordinates between 0 and 1 for each face corner in the selected faces.