Project/Pull in Rhinoceros

Hello everyone,

I have a query about projecting planar curves onto a curved surface. 'Project' command does a vertical projection (without any control over line lengths) which depends on the curvature of surface. Is the 'Pull' command a better option to project curves? Or is there any other command in Rhino which can be used for this purpose?

Attached image- yellow curves by 'Pull' command

black curves (on surface) by 'Project' command

Best regards,

Sushant Goel

MSc Uni Stuttgart

Replies to This Discussion

Permalink Reply by SA on August 21, 2014 at 4:42am

Yes because both the commands have different purposes, anyway try ExtractIsocurve command, that might help you.

Permalink Reply by Arend on August 21, 2014 at 7:37am

To be blunt, the problem is that you've created a surface that is not planar, so you cannot take x amount of 1,5m pieces of paper, and come up with a solution that can represent your shape without cutting any of the pieces.

There are ways to get close, or perhaps even close enough. Famous examples for domes are the tesselations of buckminster fuller (who uses hexagonal surfaces for spheres), or perhaps kangaroo can help you out to rationalize it a bit.

Permalink Reply by SA on August 21, 2014 at 7:01am

From what I get is you want a grid of 1.5x1.5 square pattern or whatever it is to be projected on a spherical surface. Now imagine a grid on a plane and the same on the curved surfaces, it behaves differently, right ????

Now the options you got is either you let the compensation let happen or you can populate the surface with a square grid of a definite size using KG

Hope this helps

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