NORMALS

It's hard to tell wether the normals are correct or not, but it looks ok at the first sight

you use different methops for calculating vertex normals depending on the way you store the data. If you store each triangle linearly you do look at your data

 3|-----------------|
  |\ |\ |\ |\ |\ |\ |
  | \| \| \| \| \| \|
 2|-----------------|
  |\ |\ |\ |\ |\ |\ |
  | \| \| \| \| \| \|
 1|-----------------|
  |\ |\ |\ |\ |\ |\ |
  | \| \| \| \| \| \|
 0|-----------------|
  0  1  2  3  4  5  6 
  

note that your triangles might be aligned differently, but you see that to calculate the vertex normal for (3,1) you have to add the normals of all the faces that touch the vertex and normalize it. In this case it's triangle nr. 14/15/16/19/20/21. you can derive how to calculate that if you draw it on paper.

Codito, ergo sum - Graphics Programming

Edited by - Thoooms on April 20, 2001 8:15:15 AM

looks fine to me just smooth out the terrain

Without Lighting it looks really nice for something
without ligthing

but with lighting you can extremly see the cornerpoints because
of my face normals And so i have not to smooth out the terrain.

To clarify what Thooms said:

A vertex normal vector is the average of the face normal vectors of the faces that share the vertex.

You don''t need to "normalize" the vertex normal given that your face normals should have already been "normalized" (all components in the range of 0.0 to 1.0).

It looks like your face normals are correct, but I can''t be sure from the screenshot. Just keep in mind, when you do the cross product of 2 sides of a triangle to get the normal, that the order matters for cross products. The order (clockwise or counterclockwise) depends on the order you defined the vertices in.

Also, when you calculate the vertex normals, make sure you use Gouraud (or Phong, but probably not recommended) lighting, not Flat shading, to make use of the vertex normals

------------------------
CRAZY_DUSIK* pCrazyDuSiK;
pCrazyDuSiK->EatMicroshaft(MS_MUNCH_BILL_GATES | MS_CHEW_BILL_GATES);

well my next thought was gonna be if u have to blend the lighting into the terrain???