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Display UV island in different colours

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How do I display the UV island in different colours AFTER having finished all the UV work: UV flatten, UV Layout and UV Quickshade.

I'm texturing and I notice nasty stretching in Substance Painter, I need to go back to the UVs view in Houdini to identify which island is causing the problem.

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connectivity sop, primitive mode, enable 'use uv connectivity'. color sop in 'random from attribute', primitive mode, attribute name 'class'.

 

 

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I was about to say "Or you could use the GameDev's UV Visualize" - but it uses the exact same technique as you described.
Neat trick !

You can also display the flattened UV in the 3D view with the UV Visualize sop, which could help you with that stretching problem of yours.

image.png.d2ad52873fc93a17589a85fbad4804fb.png

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