Grasshopper

algorithmic modeling for Rhino

Hello friends I am trying to make planar surfaces from set of polylines....but GH is not generating these surfaces...i think its a problem of data management , which I cannot figure out......please see the attached image and help me out to obtain surfaces from polylines so that i can fabricate this form.

Views: 3123

Replies to This Discussion

are these polygon planar? you can check the using planar component found in tab curve/analysis

best

alex

i checked curves in rhino but they are not planar...but they seem planar like one rectangle in one plae...may be i dont understand proper definition of planar surface....

Yes these curves are planar because they have been extracted from flat mesh surfaces generated by panelling tools in grasshopper.

without a file i cant think of something

What's the warning on the Boundary component? You can see it if you click on the orange balloon.

Hi david I tried making faces from planar srf in rhino...and then I analysed the problem. It said that rhino needs closed planar loops for surface. Now those curves in lattice are all joined from straight lines I dont know why they are not planar. How to fix planarity issue of these curves. I am attaqching both of my files. I want to fabricate this form after I get these panels...

Attachments:
Just because a curve is made from straight lines doesn't mean it's planar. The entire curve must exist in the same plane. This is an example of a polyline which is not planar

http://i.stack.imgur.com/s3D9v.png

Triangles are always planar, but anything with more edges might not be.
Thank you for that info...can you guide me on how I can turn those into planar curves.....I did that using flat panels in panelling tools also but then my panel edges won't meet each other...so I am little stuck

Obviously you cannot make them planar without deforming them, so the question really is what parts of the structure are allowed to deform? Do you want to move a single point on each quad to make it planar? So you want to move two opposing points? Do you want to move all points? Do you need edges where adjacent quads meet to remain coincident? If you want the last one, that is really quite difficult, but there's a large body of work out there that deals with planarization/flattening, within Grasshopper your best bet is probably to use Kangaroo.

Thank you David for that reply !

RSS

About

Translate

Search

Photos

  • Add Photos
  • View All

Videos

  • Add Videos
  • View All

© 2024   Created by Scott Davidson.   Powered by

Badges  |  Report an Issue  |  Terms of Service