I'm trying to force a ramp to create a diamond shape like this http://www.rit.edu/~accpph/images/cg/diamond_01.jpg . Of course I can get a box and rotate it 45 degrees. But I want to pinch two corners like in teh web link above. I get close with a sleight V wave value, but it's not perfect. Can I use a ramp. or many ramps to get a shape like the one in the web link, if yes, how?