Grasshopper

algorithmic modeling for Rhino

Hi,

I'm trying to cut a given srf using a crv.

Depending the srf I use I have correct or wrong result. I know Grasshopper is not the right software to do these stuff, but probably I'm doing something wrong or there is a way to fix the srf.

On the image below you can see that the white crv doesn't cut the red srf.

Thank you for your help!

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It seems your curve has two parts which are not connected. 

'Project' is producing two results from one input curve; in other words, a curve with a gap in it.  I tried several things, all failed, so agree with the thread title - "Corrupted srf".  Mysterious.

I guess I have to give up :(

I know, that's why I put wrong on that crv... but I can't understand why

Just remake the surface - try rebuilding it or making it with the edges via edge surface, patch, or network surface.

This worked for me. 

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Very similar surface, off by ~2 mm in places:

I guess yours is a check on the similarity of the srf.

My issue is that the srf is a given srf, that could have a bumb in the middle and I cannot have the same srf using just edge srf.

At the moment I will use this strategy because, as you noted, there is no difference.

probably the best way is to subdivide the original srf in n parts and use those with patch.

Thanks!


If there is a lot of variation in the surface (bump in the middle) you might also try and contour the surface with a density appropriate to the bumps and then loft those contours. 

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