Wrapping/winding around mesh

Here is a small script for wrapping/winding a polyline/filament around a mesh. This script is derived from Daniel González Abalde script "http://www.grasshopper3d.com/forum/topics/searching-for-code-to-ge..., it add an angular variation in direction of polyline.

Above to pattern generated on Stanford Bunny.

A "sin" winding on an ellipse, in fact angle equation is "CoeffA*(sin(i)*0.5+0.5)^CoeffB"

Attachments:

wrapping lines around mesh.gh, 17 KB

Replies to This Discussion

Permalink Reply by Daniel González Abalde on May 2, 2015 at 4:14pm

I had not thought about the implementation of mathematical formulas in this.
Great, a new toy to learn. Thanks!

Permalink Reply by Vinay on May 12, 2015 at 4:19am

Dear Daniel,

Can you tell me where exactly to add expression "CoeffA*(sin(i)*0.5+0.5)^CoeffB" . I tried adding but its not working. Thanks in advance.

Regards,

Vinay

Permalink Reply by Jon Bossuyt on May 12, 2015 at 3:13am

Thanks for sharing!

Permalink Reply by Vinay on May 12, 2015 at 4:16am

Thank you very much for sharing.

But can you please tell me where exactly to add expression "CoeffA*(sin(i)*0.5+0.5)^CoeffB" . I tried adding but its not working. Thanks in advance.

Regards,

Vinay

Permalink Reply by Laurent DELRIEU on May 12, 2015 at 5:26am

The equation is inside my script. There is à Button for choising it.

say you are at the step i the équation calculate the new direction
Hope it heps!

Permalink Reply by Vinay on May 12, 2015 at 10:36am

Thanks for the reply. But I could not find the equation. I am very new to Grasshopper, sorry. Can you please help. Thanks.

Permalink Reply by Laurent DELRIEU on May 12, 2015 at 1:49pm

Here is a screen shot

The equation is "maxx*(sin(x)*0.5+0.5)^y" its results feeds AngleDeviation list of angles. Imagine you are walking on this mesh, at each step "i" you change your direction depending of AngleDeviation(i). With this equation angle is always positive between 0 and maxx, and with y=1 it is a sinusoid.