Hi im importing a CAD file (a simple house example) into processing by exporting point files from rhino with each planar surface and drawing them again in processing by reading the points from the text file with the beginshape and vertex commands.

 

However sometimes the vertical planes do not appear, and the worse is that this is completely random, sometimes it draws the plane and sometimes not. For instance i rotated 1 degree one of these planes in rhino  so that it wasnt completely vertical anymore and then it worked. When i rotated it back to its place it still worked! and then i tried same trick with other planes and it worked just in a couple of them...

 

 

Have no idea what this could be, is vertex not meant to be used for 3d stuff???