Concave: Difference between revisions
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Concave simply means hollow at one side. Imagine a brush. It's concave when you are able to draw a straight line through it and make it enter and exit the brush twice. This can only happen when brushes are concave (the opposite of concave is convex) Concave brushes are not allowed in the BSP format. Hammer and the compile tools wil report concave brushes so you can repair them (by [[reshaping solids]]). | Concave simply means hollow at one side. Imagine a brush. It's concave when you are able to draw a straight line through it and make it enter and exit the brush twice. This can only happen when brushes are concave (the opposite of concave is convex). Concave brushes are not allowed in the BSP format. Hammer and the compile tools wil report concave brushes so you can repair them (by [[reshaping solids]]). | ||
[[image:Concave example.JPG]] | [[image:Concave example.JPG]] | ||
Revision as of 05:37, 6 July 2005
Concave simply means hollow at one side. Imagine a brush. It's concave when you are able to draw a straight line through it and make it enter and exit the brush twice. This can only happen when brushes are concave (the opposite of concave is convex). Concave brushes are not allowed in the BSP format. Hammer and the compile tools wil report concave brushes so you can repair them (by reshaping solids).
Note how the left and middle brushes are convex (legal) while the right brush is concave (illegal).