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Transform incoming UV texture coordinates for 2D texture placement.
The input UV coordinate to transform; defaults to the current surface index=0 uv coordinate.
The pivot coordinate for scale and rotate: this is subtracted from u,v before applying scale/rotate, then added back after. Default is (0,0)
Divide the u,v coord (after subtracting pivot) by this, so a scale (2,2) makes the texture image appear twice as big. Negative values can be used to flip or flop the texture space. Default is (1,1)
Rotate u,v coord (after subtracting pivot) by this amount in degrees, so a positive value rotates UV coords counter-clockwise, and the image clockwise. Default is 0.
Subtract this amount from the scaled/rotated/“pivot added back” UV coordinate; since U0,V0 is typically the lower left corner, a positive offset moves the texture image up and right. Default is (0,0).