Fading pattern on a triangular surface

Hi to everyone, I'm rookie of gh, forgive me is this post could be considered stupid, but...

I'm following an exercise from Tedeschi's AAD book.

The algorithm propose a "fading pattern" on a rectangular surface.

There's no problem if I draw a rectangular surface, but if I transpose the algorithm on a surface wich is triangular, the pattern get out from the surface's bound...(and then I'm forced to cut the mesh)

The problem comes out from entity input?

Beginning the algorithm I must consider the triangular surface as a single triangular mesh ?

Thank you all for the help!

Replies to This Discussion

Permalink Reply by Jordan Tull on February 3, 2017 at 4:12pm

what surface am I suppose to link?

Attachments:

Screen Shot 2017-02-03 at 3.11.55 PM.png, 226 KB

Permalink Reply by Attila Jónás on March 17, 2017 at 9:03am

Hy, please could you upload the working gh with the 3dm file?

Permalink Reply by Ayk Martirosyan on February 3, 2017 at 9:38pm

Davide,

Not everyone read the book and it would be better if you include links and images to clarifty your question (as this post suggests - http://www.grasshopper3d.com/forum/topics/how-to-get-help-when-you-...) for others to help you.

First, your problems is that triangular surface is trimmed, that's why when you input it into Lunchbox component it gets untrimmed so that the division could be implemented. Try using "Untrim" command on your triangular surface and you would see. Second, you can try a Lunchbox component "Subdivide Triangle" to get the divisions and try to implement the same idea on a triangular surface. It would require to reimplement the original definition with some changes.

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