Collision with Terrain/how to know the coordinates (x-y-z) of each point

Question

I have a 3D model which will collide with the terrain. How can I get the terrain position coordinates?

Answer 1

for 3D terrain, the best way to go is heightmaps. Since your terrain is generated from a texture files (pixels), it is easy to get the coordinate and height of each points.

Take a look at http://www.riemers.net/eng/Tutorials/XNA/Csharp/Series1/Terrain_basics.php