Hi Cameron,
Thomas DeWeese:
The second option would be to ensure that the 'shared edge' is always drawn in opposite directions.
Cameron McCormack wrote:
Why are the renderings different depending on the direction of the edges? Does the anti-aliasing differ?
I don't really know since I don't have access to the details of the Java2D renderer, but from a pure geometry point of view the two are quite different. If you have two edges that go in opposite directions to/from the same points they can always be safely culled. One will increment and the other with decrement leaving the winding count the same. So these two edges can simply be 'culled' from the edge list - they should have no effect. When you have two lines going in the same direction it depends on the winding rule if they have an effect. If you are using Even/Odd (as he was) they shouldn't have an effect (they will either increment or decrement winding count by two) but of fill rule is non-zero they can quite certainly make a difference. This is also just the 'proper' way to draw geometry. Most 3D systems require you to draw all geometry counter clockwise so the cross product is positive (or else they consider the poly to point the other way). --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
