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Sample Texture Color

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papsphilip
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Joined: July 2018
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is there a vex function to sample the color from a texture map?

int prim
vector uv

xyzdist(1,@P,prim,uv);
//primuv()?
//how do i get the color from the uv coordinates?

Attachments:
sample texture.hiplc (165.2 KB)

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sepu
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use an "attribute from map" so you can have a Cd attribute from a texture. You do not need the uvquickshade btw

then in the wrangle

int primid;
vector uv;
float dist;
 
dist = xyzdist(1,@P, primid, uv);
 
v@Cd = primuv(1,'Cd',primid, uv);
Edited by sepu - Oct. 20, 2022 20:15:14

Attachments:
houdinifx_ouTl3FmWLt.png (76.4 KB)

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Konstantin Magnus
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The colormap() function samples images:
https://www.sidefx.com/docs/houdini/vex/functions/colormap.html [www.sidefx.com]
https://procegen.konstantinmagnus.de/ [procegen.konstantinmagnus.de]
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