Problem73.3dm (70.6 KB)In the attached, I am trying to create a networksrf using the frames in the attached.
I get the dialog box, and click OK.
Then “Sorting curves” appears at the bottom of the screen but nothing happens.
What would i have to do to correct?
Nothing attached.
How many curves and how many control points on each curve?
Sorry, I had uploaded the wrong file and was in the process of correcting.
Works for me in Rhino for Windows if I start NetworkSrf command without any curves selected, and then select curves. However it doesn’t work if I select the curves and then start the command.
There’s a tiny red curve at the kink in the upper green curve. Delete it and the command works.
Thanks.
When I remove the offending thing, I get a wide gap between the curve and the surface that I’m sure will cause a problem mating the next piece.
Yeah, you’d probably be better off making this with 3 surfaces rather than one.
That was what I was originally doing. The problem is that it creates huge discontinuities between the segments.
If the attached isn’t what you’re after, then maybe it would be better to extend the red curves to make it more rectangular, and trim the result with the green.Problem73A.3dm (144.6 KB) Maybe @BrianJ has another idea.
Depending on what you need to connect to adjacent to this surface and how closely that relates to the green curves, you may want to try a Patch surface at 100x50 like the attached. Problem73_patch.3dm (495.3 KB)
This illustrates the problem I have doing things separately. Here is the shape:
If I build the red part using a networksrf using POSITION for the right edge, I get this clear discontinuity.
If I do the same using TANGENT for the edge, the edge looks fine but I get this ugliness at the top:
If I do the same using CURVATURE, I get roughly the same:
In order to get tangent continuity, you have to make sure the new curve that meets at the kink has end tangent that is coplanar with both parts of the curve that was broken at the kink. Otherwise, you’re asking for something that is not mathematically possible. Here Problem73c.3dm (119.1 KB) I’ve made lines tangent to the two parts of the green curve, made a 3 point plane from the lines, extended the plane, and projected the second-to-end control point of the black curve to that plane. Now the two network surfaces are tangent.
No Problem73.3dm (958.2 KB)
Upper left Short curve delete and run command…
