UV Squares

Blender's UV Editor tool that reshapes UV quad selection into a grid.

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Installation

Go to Edit > Preferences > Addons > Install and either select .zip file or the unzipped uv_squares.py file.

Location

UV Editor > N Panel > UV Squares

Features

• Reshape selected UV faces (quads) to grid of either:
  • equivalent squares (each square area is the same)
  • or by respect to shape of an active quad (area of rectangles can differ but they fit into straight lines)
• Convert multiple islands at once (select more than one separate UV chunk)
• Align sequenced vertices on an axis (X or Y axis is determined by slope automatically):
  • make them equally distanced
• Join selected vertices to any closest unselected vertices
  
• Select single vertex and snap 2d cursor to it

Shortcuts

• Grid/Aligning: Alt + E

Notes

Aligning to axis

• All vertices have to be ordered/sequenced by x/y value depending of X/Y axis that they are getting aligned to. Otherwise you will have swapped vertices in the result.
• What script does here:
  • set pivot to cursor (sets it back after)
  • 2d cursor will snap to closest vertex and the alignment will be made at that verts x/y value, depending on the axis
  • restrict scale to axis (recognize X or Y by the slope)
  • scale to 0 to where the cursor has snapped

Reshaping to grid

• Works on any UV selection shape of quad faces
• You can specify an active quad by making it the last selected face. If not, one face will automatically be taken
• 2d cursor is snapped to closest corner and is determining the direction for calculating the length of start and end of grid as well as length of one unit for square grid

Join vertices

• Snaps selected vertices to closest non selected
  • For faces, if you want to connect islands back to their original place - use stitch (shortcut: V, while stitching press I to toggle island)

Development

• When bumping versions increment both bl_info objects, one in __init__.py which is used for .zip install, and another in the main uv_squares.py file.