Grasshopper
8.0007 fail to offset
Dear all,
I don't know if this is only my problem, but I have encountered this problem in a few scripts.
I think it happened only after migrating to 0.8.0007. My scripts written on 0004 are breaking down on the offset component.
The problem is like this: I have a lot of flat panels that I have to stick on a building. I have divide the srf by Iso points and got a lot of polygon (4sides). Because they are non planar, I have projected them onto a local plane. The logic is always projecting the 4th corner to the plane defined by the other three corner. The problem comes when I want to offset them. I have supplied the planes and the curves correctly but half of the panels will return "Curve offset failed".
I spotted on thing is that, if I check the planarity of my polylines, some of them are not planar. There must be a problem here.
Refer to this thread for a previous discussion:
http://www.grasshopper3d.com/forum/topics/offset-problems?xg_source...
I'm reverting back to 0.8.0004 and hope things will work again.
Cheers
Victor
I don't know if this is only my problem, but I have encountered this problem in a few scripts.
I think it happened only after migrating to 0.8.0007. My scripts written on 0004 are breaking down on the offset component.
The problem is like this: I have a lot of flat panels that I have to stick on a building. I have divide the srf by Iso points and got a lot of polygon (4sides). Because they are non planar, I have projected them onto a local plane. The logic is always projecting the 4th corner to the plane defined by the other three corner. The problem comes when I want to offset them. I have supplied the planes and the curves correctly but half of the panels will return "Curve offset failed".
I spotted on thing is that, if I check the planarity of my polylines, some of them are not planar. There must be a problem here.
Refer to this thread for a previous discussion:
http://www.grasshopper3d.com/forum/topics/offset-problems?xg_source...
I'm reverting back to 0.8.0004 and hope things will work again.
Cheers
Victor
Victor Leung
I tested the Polyline->Project to Plane in 0.8.0004, same case that some curves are considered no planar with a very small deviation (eg: 2.0497e-11) , I know that there is always a tolerance but how small the deviation should the system consider the True/False on planarity.
The offset command on 0.8.0004 worked perfectly, I don't know why.
Apr 2, 2011
Pieter Segeren
Apr 3, 2011