Script: baking in Grasshopper and Retrieving the Geometry back

Hi guys!

This is my first post; I shall aim to be as specific as I can be.

I have created the Cairo tiling pattern, which can Tessellate using a "point on curve" component. Using these lines I want to split a surface. I can do it in grasshopper but it takes over a minute depending upon the intensity of the pattern. Thus I want to do it on python or C# script with the following steps:

(I) Bake the Tiling Lines

(II) Bake the Surface

(III) Split the Surface with curves in Rhino( it is almost realtime in the software)

(IV) Retrieve the surface back

(V) Delete the previous baked surface and bake the new one if I move the slider.

I tried doing it with Python( I a complete rookie when it comes to coding language) and facing a lot of problems with Attributes and Guids. I would appreciate it to the core,If someone could enlighten me on how to go about the this.

Thanks in Advance guys!

Attachments:

Replies to This Discussion

Permalink Reply by djordje on November 20, 2014 at 2:11pm

Hi Aditya,

Check the attached file and enable python component.

Attachments:

Cairo_PatternX2.gh, 234 KB

Permalink Reply by Aditya Tognatta on November 20, 2014 at 3:13pm

Hi DJ!

It works like a charm! Is there a quick guide to coding with python. I just feel clogged in some situations especially when it comes to looping and adding conditions, that can be achieved in Grasshopper with too many parameters in play.

I really appreciate the help. Thanks!

Permalink Reply by djordje on November 20, 2014 at 3:25pm

There is, but it's not generally related with grasshopper, but Rhino Python instead.
Also above attached component uses a bit of macros, and document targeting.

Permalink Reply by Aditya Tognatta on November 22, 2014 at 4:19am

Hi DJ

I Just encountered an error with the script...whenever (the marked slider, refer image) goes above 25, the polylines get baked and not the surface, Furthermore , when the same slider goes beyond 29 the surface split returns and gives weird splits.

Also, If you move "MOTION MAKER" below 1/3 and above 3/4 I get weird splits again.

Don't know why this is happening....I'm attaching my complete definition.

Attachments:

Cairo_Pattern.gh, 80 KB
marked slider.jpg, 506 KB
02.jpg, 1019 KB

Permalink Reply by Aditya Tognatta on November 22, 2014 at 4:22am

Here are the other images

Attachments:

02.jpg, 454 KB
03.jpg, 455 KB

Permalink Reply by djordje on November 22, 2014 at 4:56am

Hi Aditya,

I couldn't replicate the baking issue you are having. My assumption is that sometimes grasshopper gets confused when switching documents, so this may be the case. Restarting Rhino will fix this.
As for the weird splits - this is also not the issue with the ghpython component, but with the cutting curves you generated - they overlap, and do not "go" from one intersection to the other. Try baking your cutting curves and the underlying surface, and then run the "Split" command in Rhino manually. You will see that weird splits will also appear, and this is all due to the way your cutting curves were created. You may not get exactly the same weird shapes pattern in Rhino as if you would get in grasshopper (because the patter n depends on the order by which your curves have been selected), but you will still get weird splits.

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