I'm currently working on a German verison of this page and I'm wondering whether it is correct to define brushes as convex 3D shapes. The linked Wikipedia article explains that there must not be an angle greater than 180° in convex polygons. While that is true for the standard brushes available in Hammer, vertex manipulation allows you to create single brushes with angles greater than 180°.
I conclude that brushes in Hammer can either be convex or conave and would suggest to drop the reference to that property of a brush. Or am I missing something?--Innocentive 23:57, 4 February 2013 (PST)