Differential Growth in Curves

Hi all,

I m trying to do differential growing curves and couldn't come up with any ideas to get started.Any strategies will be helpful .

Thank u

Replies to This Discussion

Permalink Reply by Frank T on August 31, 2016 at 7:11am

Hi Nick,

I can't seem to get this definition to work. What should you use as curve? Can you upload the definition you used for the bunny?

Best! F

Attachments:

linegrowthgradual.gh, 45 KB

Permalink Reply by Nik Willmore on June 24, 2015 at 12:49am

NEW REFERENCE STANDARD: Playboy mesh made via ArtCAM:

Attachments:

PlayboyBunnyFreeformSmoothedReduced.stl, 888 KB

Permalink Reply by Kim hauer on June 24, 2015 at 5:35pm

Hi Nik:

Thanks for the Playboy Bunny, I don't understand your explanation of how you got the jagged corners as seen in my bunny, to be so smooth and organic in yours? perhaps if you post your .gh I can see more clearly what you meant

cheers!

Permalink Reply by Nik Willmore on June 24, 2015 at 6:19pm

Just replace the polyline final output with an interpolated curve that also uses point inputs. Then I increased the initial divisions of the input loop I freeform drew on the mesh to 500, 1000 or 2000 and after resetting everything, often invoking a menu recalculate command if it didn't start going on its own, and while it was running I right click decreased the Kangaroo tolerance by factors of 10 to speed things up, then let it run over a half hour.

Permalink Reply by Shridhar Mamidalaa on June 24, 2015 at 12:16am

wonderful, Couldn't connect Grasshopper site, co incidentally did same think Daniel.. added timer and mesh pipe.... works good.this give me a clear picture of things ..looks like T.S.P art to me but 3d. My initial strategy(although it didn't work) was to connect dots from sorting points so that with Image sampler something like this could be done.

Permalink Reply by Florent Torres on June 24, 2015 at 1:30am

That's sensuous

Permalink Reply by Nick Tyrer on June 24, 2015 at 10:18am

I hadn't noticed this discussion. Really interesting stuff. Shridhar, what technique did you use for tsp inspired image? I just tried it by converting image sampler into 3d mesh. A lot more uncontrolled looking than yours.

Permalink Reply by Igor on June 24, 2015 at 10:33am

This is TSP soft StippleGen.

Permalink Reply by Nick Tyrer on June 24, 2015 at 10:55am

Oh i mis-read Shridhar's post. So original is not gh.. Makes me feel better, i just realised there main issue with mine is in the first 3d mesh step, not the growth step.

Permalink Reply by Shridhar Mamidalaa on June 27, 2015 at 10:30am

This was done without kangaroo.

Permalink Reply by Daniel Piker on June 24, 2015 at 3:29pm

I really like this TSP art too. As I was saying to Nik below, it should be possible to adapt this curve packing definition so that the sphere size varies according to location - in this case based on an underlying image - to get a similar effect.

I did try a while back using image values to drive the edge lengths of MeshMachine in a similar fashion: