The Sierpinski triangle was the first "complex" system I had managed to draw, using the Logo programming language in the 90s. I recently tried to do a vtk 3D ex

The Sierpinski triangle was the first "complex" system I had managed to draw, using the Logo programming language in the 90s. I recently tried to do a vtk 3D extension (Sierpinski cube)[1] using the same process as in the OP, but it was surprisingly computationally expensive! [1] https://en.wikipedia.org/wiki/Menger_sponge https://en.wikipedia.org/wiki/Menger_sponge