Terrain Normals

Blitz3D Forums/Blitz3D Programming/Terrain Normals

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Leadwerks
 #1
I have the following points on a terrain, each with a height:

A B C
D E F
G H I

I want the normal for the center point E. All I have are the following values.

The height of each point:
Ay#, By#, Cy#, Dy#, Ey#, Fy#, Gy#, Hy#, Iy#

And the distance between points:
pointspacing#

The terrain is 1 unit high x 1 unit wide x 1 unit deep.

My normals are coming out okay right now, but they look blocky, not smooth.