If then Until Conditional Statement

Hello all I am trying to write a definition that preserves the structure of a space frame as a enlarge its length. Obviously, I can't perfectly preserve the original structure because its a function of a division of the length, but I want to get relatively close.

The best idea I have come up to do this is to do some sort of If, Then, Until command.

If the length of one cell in the space frame exceeds a number, Then increase the V divide of the surface until each cell is back under the set number.

I attached the relative part of my definition (although its obviously not close to being done.) Any help/or other ways of doing this would be much appreciated!!

Thanks!!

Attachments:

GS5.gh, 7 KB

Replies to This Discussion

Permalink Reply by Ol OneEye on March 19, 2015 at 4:34pm

I will try to explain it differently. I have a created a space frame using the divide domain/extract iso curve function. In this image, the space-frame is divide into 13 sections (triangles), V=13. If I was to increase the length, instead of adding sections, it would simply stretch the existing 13 sections.

What I want to do is make it so as I increase the length, instead of increasing stretching the existing sections, it adds another one (relative to a preset maximum), so it stretches until the maximum, and then adds another section.

Is a If, Then, Until, the best way to do this? Thanks!

Permalink Reply by nikos tzar on March 19, 2015 at 5:01pm

Hello,

what you are suggesting would require using a loop plugin (GH doesn't allow loops by default).

Instead you could do the following (using the divide line example for simplicity):

provide the desired segment length and then divide the line's length by this number and find the closest integer. This integer will be the number of segments you want!

Attachments:

GS5-nt.gh, 11 KB

Permalink Reply by Ol OneEye on March 19, 2015 at 5:28pm

Hey Nikos,

Thanks! That looks a very elegant solution! I assume t would connect to the V in Divide Domain. I am going to try this first thing when I get into work tomorrow! One question, what do you have Int set as?

Permalink Reply by nikos tzar on March 19, 2015 at 7:12pm

Hello Ol,

there is no [DivideDomain] in this definition. The DivideCurve component [Divide] does the job.

The rest of the definition is just used to get the length of the segments in order to display it in the bottom-left panel (just so that you can see the actual length VS desired length). That's why I have left it out of the screen capture.

The [Int] container is not set to something. It just takes the output (float number) of the divination and converts it to the closest integer.

hope this makes sense,

nikos

Permalink Reply by Ol OneEye on March 19, 2015 at 8:40pm

Yes I get it! By some miracle of math, if you divide an initial number by x and get y, then divide the initial number by y, you get x! The integer component makes sure you divide the curve by a integer, not a decimal. Fantastic!!!

RSS