Seeing that the latest Rhino 9 WIP added texture mapping components, I immediately rushed to test them. I noticed that box mapping works strangely, it does not give the expected results. It looks like a bug, because when entering the same data regarding box mapping rotation in Rhino UI, everything s…

Rhino 9.0.25043.12305 Two issues. Texture mapping is not written to the Model Object with the first push action. It’s showing surface mapping instead of spherical mapping, I need to push Model Object once again to fix that. Texture mapping is not assigned to the Model Object inside the Block Defi…

Thanks for chiming in, since it’s a WIP and not an internal build I wanted to experiment with some workflows and detect some issues as early as possible. In the past, I was using your GH components for texture mappings, but I am counting on these because they will fit nicely with the Content Cache. …

@Czaja I have created RH-86063 and RH-86064 to track the two bugs that you reported. This is how the a box mapping looks (in Rhino) when I use the same red box as the “box” used to define the box mapping on both of the other two cubes. Here, I selected each box, then applied the Box Mapping to it. …

[image] Keyu Gan: When you inspect the underlying mapping data, you may find the xform is not fully applied. Texture mapping, the way it is implemented… is complex. However, the normal transform that is shown as a property of the Texture Mapping class is not really used (and neither is the “P…

[image] Andy Payne: I can’t exactly tell what’s happening in your video and I know you’re using a C# component… It’s just a rotated minimum bounding box component made by @RIL ( Minimum oriented bounding box. Implementation in Grasshopper + Python script node - #61 by RIL ). Each cube is ref…

[image] Andy Payne: Texture mapping, the way it is implemented… is complex. Apologies. I’m not very well informed on texture mappings. :wink: I believe in the OP’s example, two objects (one handmade, one pushed from GH) have same parameters in the Rhino mapping panel but have different looks…

This is strange. I was able to replicate the issue you showed in the video with that one cube on the right. I edited some stuff in the code, but then deleted it and went back to the original code base. When I ran the example again, everything worked. I even tested this on debug and release builds an…

Unfortunately, it’s still acting up. Attaching minimal test file. The same box, but only plane is flipped. wrong [image] correct [image] GH Texture Mapping - minimal test.3dm (317.9 KB) GH Texture Mapping Issue - minimal test v2.gh (11.2 KB)

Hmm… Ok. I’ll have to keep looking into this.

Grasshopper Texture Mapping Issues

Serengeti (Rhino WIP)

brian (Brian Gillespie) May 27, 2025, 9:42pm 15

RH-86234 is fixed in Rhino WIP

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Box mapping Human windows	10	669	May 21, 2025
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Texture mapping / not sticking to model Rhino for Windows texture	8	1905	October 24, 2016
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Grasshopper Texture Mapping Issues

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