Box mapping different in a block


At our office we use Rhino to make drawigns of modular wooden buildings. Recently we have tried to stop using 2d representations for floorplans and sections and want to move to 3d only. In order to do that we have tried to make hatches by using a a box map with a pattern. This works very well, except that it does not work in blocks. Somehow, everytime we make a block, it seems to reset the zero point of your texture mapping. I don’t know if this is a bug, or serves a purpose, but for us it means that we have to make many extra drawings and it takes a lot of time.


In a block:

Would it be possible to make the texture mapping work the same inside and outside of blocks?


Dear developers,

To clarify,

  • The above textures are created by a Clipping Plane with the display setting Show Fills turned on with the ‘Render material’ selected.
  • All the unique block elements have a different box mapping.
  • The clipping plane location varies depending on the drawing (floorplan, section, etc.)
  • The box-mapping on the ‘outside’ of the mesh work perfectly in a block

My conclusion is that in both Rhino 6 and 7, the Clipping Plane - Show Fills - Texture material shows a different texture behavior between a mesh and an identical mesh within a block. This is clearly visible in my example file when you move the objects with the render display turned on.

Clippingplane_Boxmapping.3dm (90.4 KB)
Clippingplane_Boxmapping_Rh6.3dm (85.4 KB)

My guess is that the clipping plane texture fill ignores the texture XYZ position once it’s in a block.

I hope this helps.

1 Like

Hi @rolf,
Thank you for the file and the clear description.
We have logged RH-62133 for the developers.

You can watch the progress on YouTrack if you want.
We will let you know where there is a fix to test.

Mary Ann Fugier
McNeel Technical Support and Training
Seattle, WA

Thank you Mary Ann! It looks very well documented!
I hope this bug can be fixed quite easily!
For the time being, we are trying to build our own clipping plane tool with texture fills. Although performance remains an issue.
Any advice is appreciated.

Rolf H
Sustainer Homes

1 Like

Hi Rolf,
We have the Feature request for Clipping Plane Hatch Fills RH-53061

My guess is that it has to be some type of the texture, even if it looks like a hatch, so the hatch can occlude the object is the back of it. I am not sure what approach the developer will take, but I understand performance is an issue with the textures.

You can watch this issue on YT and add any additional comments.
Thanks again.
Mary Ann Fugier