need help with triangulation problem

Hi folks,

Could anybody please take a look at the attached definition + 3dm?

The story is as follows:

I start with curve that is offset and then moved on Z axis
Both curves are lofted and sliced in a given number of sections
The resulting curves are divided into a given number of points
The resulting data tree is split so that I can sew the points between two curves, alternating the points
With these points I create the horizontal polylines and the first set of triangles

Here's what I can't do:

I can't create the remaining set of triangles!

I know I'm certainly doing a lot of unnecessary steps, but at least it's working the way I want. I must also say that I'm new to data trees...

I can also imagine that there must be a simpler way of triangulating a surface, I'd appreciate if you could give any other examples.

Any light, please?

Thanks a lot!

Regards,

LUCAS

Attachments:

110525-lucas.3dm, 29 KB
110525-lucas.ghx, 365 KB

Replies to This Discussion

Permalink Reply by Danny Boyes on May 25, 2011 at 12:41pm

Hi Lucas,

Once you have a grid of points to work with I use a combination of Flip matrix, and shift list to get triangulation patterns.

Attachments:

110525lucas_Alternative.ghx, 232 KB

Permalink Reply by Lucas Corato on May 26, 2011 at 2:05am

Hi Danny,

Thanks a lot for your time and effort!

I also thank you for introducing me to the "flip matrix" component, it solves my problem perfectly.

Your solution was essential for me to understand what I needed, since it is a bit different of what you've done: the triangles have to be more isoceles-like and oriented in vertical lines. That's why I split the trees in two groups and shifted the points in one of them

I'm uploading my file so you can see how I adapted your definition to my needs.

Once again, thanks a lot, you kind of saved my day here at the office!!

Regards,

LUCAS

Attachments:

110526-lucas.ghx, 423 KB

Permalink Reply by RWNB on May 26, 2011 at 6:50am

hi danny,

can you tell me how can i find the right value for the input L parameter

for the Line SDL. the section curves should be distributed in the same

distance on the surface.

then proceed like your def. but this, i can do it by myself.

many thanks!

Attachments:

P_Tower.ghx, 210 KB

Permalink Reply by Danny Boyes on May 26, 2011 at 7:34am

Not sure I fully understand. Do you mean that the Line should be the same height as the tower. So that you get evenly distributed sections up the height of the tower?

If so see attached.

Attachments: