Is it possible to make aTriangle matrix in Xlights?

Having a hard time finding a better picture but on the left side is my garage. Both sides of it have a brick facade that goes up to the roofline. I want to do a seed pixel matrix over both sections next year(2026). I know I can easily just do a rectangle matrix but I would like to go all the way to the top. Is there a way to make a rectangle matrix or would I just have to make a custom model for the whole thing or just the triangle and group it together with a normal matrix. I may have to break it up into sections to get around the house light in the middle or just replace the light from October to January.

how do you want to wire it?

ok I thought about this some more, a custom model is going to be the best way.

you can do some shenanigans with icicles or megatree model, but its going to be a lot of messing about. custom model is going to be the way to go.

Technically it is possible to make a triangular pixel matrix. Boscoyo makes a triangle mesh you can check into.