I'm creating a tower massing and am having a problem getting the surface to divide the way I want. I really wish the grid positioning and alignment was better. This form is just an extrusion. I'd like there to be an even number of diamonds (rotated rectangular grid pattern) in the sloped portion, but as you can see, since the extents of the grid is just a bounding rectangle and don't seem to have any control over where it starts and stops. The red rectangle is what I'd ideally like as the grid alignment, so it is bounded on both sides of the sloped part. Then the pattern can extend beyond that to fill in any gaps. Thoughts or ideas?