Grasshopper Patch Problem -

Hi there,

I have an issue with the Patch component (not ‘Patch for Rhino5’). What I am trying to achieve, is to patch up the singularity on some revolved forms. I’m talking 500+ of them, all of slightly different radius/form. So I’ve broken away my subsurface and generated isocurves across the surface to be patched over.

The problem I’m encountering seems to be at the point of generating/selecting the number of spans. I can get up to maybe 7/8 spans and then get a Object reference not set to an instance of an object error. But I just don’t quite understand how this is affecting it and why it’s restricting it - as a result the actual tolerance the patch is achieving is quite poor as well.

grasshopper_patch_problem.3dm (3.4 MB) (28.5 KB)

Hi @Jonathan_Hutchinson1 ,

For future posts, its always useful if you post an image along with your description in order to get a better sense of what the problem is.


In my opinion, patching is not the best way to go here if you are looking for more accuracy. Here is my two cents worth of perhaps a longer but more precise definition in order to ‘cap’ the singularity on those revolved forms. (50.5 KB)

Hope it helps.

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