Use these options to set what happens when you select
.
Settings
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Keep Ratio
- Retains the width to height ratio of the image so that it does not distort. Turn this off to cause mapped UVs to fill the 0-1 UV space.
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Insert projection before deformers
- Use this when the mesh has a deformer applied to it to ensure that the texture placement is not affected by the moving vertex positions.
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UV Set
- Enable this to place the projected UVs in a new UV set. You can specify the name of this new UV set in the appropriate field.