Merge two triangular faces into one

[Leon_Giani]

I want to merge two triangular Facs into one square-kinda shaped face, because the building i have to resemble (poly international plaza) doesnt have these green outloined structures, between the upper and lower triangular, in picture 1.

I have tried some things but nothing is working for me for now.

These are the two different triangular faces, in which I first want to cancel out the middle-line and then having the upper and lower triangular merged and at last have them joined together into one brep without the middle-line and finally having both merged triangular breps into one whole brep for the facade.
poly1.gh (36.7 KB)

Thank you in advance!

[Joseph_Oster]

I did some code cleanup in the process of studying your code, but have no insights to help, sorry.

poly1_2025Feb14a.gh (26.6 KB)

[Leon_Giani]

No problem, still thank you much for your help! I probably will take a break and try again tomorrow.

[Quan_Li]

diamond tiling.gh (56.5 KB)

[Joseph_Oster]

I got something but… (in the limited time I had available)

1. Had to use Scale instead of Offset Curve (blue group slider), which is not ideal.

2. Wasn’t able to eliminate the middle line that separates adjacent face pairs.

Other Notes:
Found and removed duplicate faces (yellow group).
Deleted and replaced a lot of code
Used PopGeo to pick random pairs of adjacent triangles…
At the last minute, I colored the random pairs transparent blue.

poly1_2025Feb15a.gh (50.4 KB)

It’s likely there are errors.

P.S. Can’t believe I just now discovered this… In R7 and R8, if you select and bake the Preview components, the colors and transparency will be visible in the Rhino ‘Rendered’ view, even after the GH file is closed.

[Quan_Li]

poly1_2025Feb15a Edited v0.gh (55.6 KB)

Just a try.

[Joseph_Oster]

@Quan_Li

Just a try.

And I see you used my code, without any credit

[leopoldomonzani]

Another try.
poly1 a.gh (20.4 KB)

[Joseph_Oster]

Instead of Scale I projected to a plane before Offset Curve (white group), then extruded the filleted curve to split the brep (two faces sometimes).

poly1_2025Feb15b.gh (50.7 KB)

[Leon_Giani]

Just wanted to say a big thanks to all of you who responded to my question! Your tips and suggestions really helped, and I appreciate the time you took to share your knowledge.

I have definitely learnt a lot of new things about what is possible with grasshopper!