Grasshopper

algorithmic modeling for Rhino

# Modeling a parametric rosette with Grasshopper

In this Grasshopper video tutorial, you'll learn to define a custom rosette oriented normal to any surface. Use of referenced geometry, vector analysis and index culling are among the techniques covered in this lesson.

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Comment by maryam on January 16, 2012 at 7:20am

I have a question Brian,

I am a new learner of Rhino and GH but I have a lot of experience working with 3Ds max-Vray. I just want to know, how to reverse curves in rhino like i can do in 3ds max creating nurbs, and how to change a curve's first point or start point in rhino specially when I assign that curve to a GH icon of curve.

Comment by Brian James on January 16, 2012 at 7:02am

Very funny... I do call myself Brain but only when I misspell my own name. I'm glad the video was interesting.

Comment by maryam on January 14, 2012 at 4:34pm

You should call yourself Brain instead of Brian! ;)

Comment by Brian James on November 30, 2011 at 11:24am

I'll assume you're using the surface normals as a vector in order to adjust the position of the surface frames. If you have already done this, then it sounds like the value for the offset is too large and should be scaled down. If you send me your definition, I can also take a look. brian(dot)james(at)mcneel(dot)com

Comment by Chris C on November 29, 2011 at 12:28pm

Thanks for this video.  I tried this with the latest grasshopper on a rail surface, but for some reason it is offsetting the rossette way away from the surface.  Any ideas?  I've tried grafting and flattening at points, but no success...

Comment by Youssri Salman on May 26, 2011 at 1:17pm
Many Thanks, I start learn and I love it...
Comment by Karina Teixeira on May 25, 2011 at 5:55am
Very nice...  I learned new things with your video.
Comment by Andres Gonzalez on May 24, 2011 at 6:35pm
Brian, we would love if you could post these at www.gjd3d.com too!

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