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How to get a decent spherical uv map?


Krion

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Hi! 

I get this distorted thing on top of my sphere mapping, and I do just the same as in the in the example on this link, with the same texture:

https://wordpress.discretization.de/houdini/home/advanced-2/textures/

But mine looks like this:

5d90d610b8bb0_Screenshot2019-09-29at18_04_13.thumb.png.1d0d0f6e482d85c5d94e931df5ebb62f.png

Why is this and how would one do this? :)

Also: How would one best uv-map a sphere when using, say, a pattern VOP in a material instead of such a texture map?

 

Thanks in advance!

phereMapping.hipnc (here is the texture)

 

Edited by Krion
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By the way, thinking again on your problem : your image is a latlong map. You could also convert it as a cross image using isixpack (https://www.sidefx.com/docs/houdini/ref/utils/isixpack.html).

Then, instead of unwrapping uv with polar coordinates on your « spherized » cube, unwrap your cube and make each faces’s uv match the cross image....

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