Extruding Parametric Profile along Curve/Rail

Replies to This Discussion

Permalink Reply by Pep Tornabell on December 18, 2009 at 5:42am

Hi, that might not be the answer you are looking for, but there's a cool blog called geometrygym, where Jon Mirtschin offer some interesting tools that if I didn't ge it wrong he has developed (and is still doing it, I think). There some structural pluguins for rhino to link rhino and structural analisys software. You can choose from a quite long list of profiles and sweep them along any curve. It has lots of other usefull stuff. You will find it here.

Hope it helps

Permalink Reply by se on December 18, 2009 at 6:15am

yes, i know about geometrygym and also use his structural draw tools... but i wanna do this inside GH, if it's possible!? Been also playing w/ Cinema4D and there's a 3step parametric procedure for doing this, as it already has parametric profiles in splines menu. So you select profile, create rail (or two) & sweep it along... and everything is still staying parametric for further use. That is what i want to achieve with GH. I wanna create parametric profile presets and then use them as i please... and share w/ everyone 'cause it really is very useful.

Permalink Reply by Jon Mirtschin on December 20, 2009 at 3:16pm

Seems like you found a solution entirely within Grasshopper which is great. From the other active thread about other plug-ins interacting with Grasshopper, I'm keen to develop the link where a lot of the routines I've created could become components in Grasshopper. The routines I've already written are parametric (in that you can bulk update a section property applied to curves/layers anytime later on in the process), and that the can handle profile orientation (and be calculated from the position of the curve mid point relating to a Rhino surface). I'm about to post a blog entry or two to better explain how these work with an example or two.

Cheers,

Jon

Permalink Reply by Robert Jason Cross on December 18, 2009 at 7:07am

orient should do it. you can take planar profiles and orient them to a curve and then loft them or sweep them.

Permalink Reply by Robert Jason Cross on December 18, 2009 at 7:30am

I have it working. Ill post the code shortly. You needed to join your curves so that the could be swept as one unit.

Permalink Reply by Robert Jason Cross on December 18, 2009 at 7:34am

Here you go.

Attachments:

• IPEprofil_EDITED.ghx, 703 KB
• Untitled-1.jpg, 860 KB

Permalink Reply by Manuel on December 18, 2009 at 7:49am

:D I do the same!! (i didnt hit refresh after looking for something to eat):

Attachments:

• IPEprofil by Manuel.ghx, 738 KB

Permalink Reply by Robert Jason Cross on December 18, 2009 at 7:58am

Awesome manuel. It is good to see the many ways things can get done within grasshopper. You have your solution in two ways :)

Permalink Reply by se on December 18, 2009 at 5:45pm

nice to know that i've missed such a basic one as join curves, it only shows that i have still much too learn about GH geometry.

nice solutions although Manuel's had a glitch - profile's starting point needs to be manually placed at the start/end of the sweeping curve to work properly (is OK if, in definition, curve's end point is selected as a starting point for a profile)

Permalink Reply by peter on December 19, 2009 at 7:26am

see attached, it should extrude any curve along a spline
Peter

Permalink Reply by se on December 19, 2009 at 7:39am

attached where?

Permalink Reply by Dalibor Spilak on November 21, 2010 at 10:06pm

Hi, I am new in GH and this was very usefull to me, but it is possible to extrude, sweep or loft along polyline any curve. I mean I want to start with circle and end with rectangle. Thanks
Dalibor

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