Hi,
I need some help rotating the image sampler image on a compound surface, currently it’s 90 degrees in the wrong orientation. I also have some specific questions on extruding + subtracting the pattern from solid geometry.
Is anyone available for some paid video tutoring? It shouldn’t be a lot of time just have some specific questions I would like guidance on.
-Colin
Just pose your questions.
there are a couple of things to say,
your image looks like a perfect square, so if you sample with reparametrized UVs you might get much better results (in terms of proportions) if you are also sampling a squared surface (that’s the reason your image made of circles, despite being rotated, looks also stretched if compared to the one in the image sampler)
in your screenshot UVs are questioning the image for pixel color based on their own coordinates, something like this:
without rotating the image you can get what you want by using “dir” Rhino command on the Thino surface, in such a way to align the shown UVs with the image
in alternative you can get to the black ones here, by deconstructing your UV points (deconstruct point) and construct new ones (construct point) where:
old_x_coordinate → becomes (1 - old_x_coordinate) → and goes into new_Y_coordinate
old_Y_coordinate → goes directly into → new_X_coordinate
You don’t need to rotate the image sampler but the UV direction of the surface.
The easiest is to do it in Rhino with the Flip command.
To do it directly in grasshopper you need Flexibility or Pufferfish plugin
Thank you, very helpful with both suggestions.
-Colin
You need neither of these plug-ins to change the UV directions of a surface.
Please give it a try with Reverse Surface
ReverseSurface.gh (20.3 KB)
I changed the topic category, since this has nothing to do with metahopper.
Gosh, you’re right.
There’s so many option that stay update is hard. Is added into the V8, right?
Very interesting, thank you!
-Colin
