I'm going to create a wall of pyramids, like this: 
http://www.homecrux.com/wp-content/uploads/2012/10/Black-Diamond-wall-heaters-by-Foursteel_1.jpg

which has to end up like this (note that the pyramids here have 4 ribs, i'm going to use only 3 like in my first link):
http://www.colourbox.com/preview/2149803-354582-abstract-wall-surface-made-of-pyramids.jpg

I know how classes, methods and most basic things around that work (college), but:

- Is it wiser to use PShape for this to save one standard pyramid and use this 'till the wall is full, or draw each pyramid seperately with methods beginShape() and endShape()?

- My plan is to create a rectangle with this texture, and then attach it to a beam, and place these beams (created with the method box()) in a certain position towards each other to create something. Is this a good plan, or can it be done more efficient? 

- Furthermore, can anyone give me some basic structure (progressive scheme) to begin with for this? I'd like to work it out myself then, naturally :-)