Random openings on a facade

[Adjeu]

Hi there,

I am pretty new to Grasshopper and I haven’t found any tutorial for this yet

I am making a 3D model of a building for an architecture project. I would like to create random rectangular openings on the cladding of a facade, but this should be done according to a given surface.

Explanation : the facade is 58 m2 and I need a total of 11 m2 of opening. I need these 11m2 to be divided in small openings randomly distributed on the facade, and I’d like my openings to have a sort of long and thin rectangular shape that could also be slightly different from one opening to the other. So there would be 2 random things ; the position of the holes on the facade AND the dimensions of these holes.

Question 1 : is there a way to do such a thing in Grasshopper ? (I’m sure there is )
Question 2 : If the answer to Q1 is yes, is there a way in Grasshopper to directly puncture the cladding according to the randomly generated shapes or do I need to do this in Rhino afterward ?

The closest tutorial I found is this one https://horstsondermann.com/rhino-grasshopper-random-geometry-distribution/

I hope you’ll understand me, since English isn’t my native language

Thank you very much for your help !

[ebe (Erik Beeren)]

Hi @Adjeu,

Here a simple example.

randomfacade.gh (10.2 KB)

[Adjeu]

Hello @ebe

Thank you very much for the reply

I’ll try to mess around with it ! Although “simple” example doesn’t quite fit since my skills on grasshopper are really low so I’ll spend some time to try and understand the whole thing. But it’s a great way to learn !

Thank you

[ebe (Erik Beeren)]

You can go trough the script step by step and preview every step.

[Adjeu]

I’m getting more and more comfortable with the script and it feels great to learn that way thank you very much !

I still don’t understand the meaning of these three components. Could you explain their purpose please ?

[ebe (Erik Beeren)]

Hi @Adjeu,

Good to hear you are getting familiar to the script.
To generate rectangles which are not on the X,Y plane you need to input a plane.

With the first node I can analyse the normal of the facade on the place where the window is situated.
With this normal I can generate a plane for each window and get the rectangle orientated in the correct direction. If you would have more wall parts with different directions, the script still works.