How to do this triangle facade

[Phumphat_Teachalikhi (Phumphat Teachalikhidkul)]

i wanna do this facade for my project but i try and the result i got its not random pattern. can i get the example file of this type of facade

[inno]

if you invert the pattern of your culling used in your second picture, you’ll get something more similar to the first picture (without holes of course)