jyoung77

04-03-2007, 10:10 PM

Hi,

I draw a triangle according to these vertices, respectively: (0, 0, 0), (0, 1, 0), (1, 0, 0). I hope to have two face to show the same color. When setting the vertices' normal, I find out that (0, 0, -1) shows darker, real color than (0, 0, 1). Could some one kindly explain this difference? It looks to me that something translucent covers the triangle when using (0, 0, 1), and hence it appears less pleasing.

Very sorry that I'm a newbie. Any help is much appreciated.

Tony

I draw a triangle according to these vertices, respectively: (0, 0, 0), (0, 1, 0), (1, 0, 0). I hope to have two face to show the same color. When setting the vertices' normal, I find out that (0, 0, -1) shows darker, real color than (0, 0, 1). Could some one kindly explain this difference? It looks to me that something translucent covers the triangle when using (0, 0, 1), and hence it appears less pleasing.

Very sorry that I'm a newbie. Any help is much appreciated.

Tony