D3DXIntersect

Two Scenarios:

If your floor is an irregular surface, which wouldmost likely be a mesh then you may want to look into D3DXMeshIntersect().

If your floor is a flat surface then you can just give your floor a thin bounding box, like a wafer. Then you can check whether the y coordinate of your camera lies inside the bounding box.

To be honest, if the floor isnt that iregular, like in modulation between the highs and the lows then u could even use a bounding box for that.

Hope this helps.

ace

It says on msdn that D3DXInersect "Determines if a ray intersects with a mesh." is D3DXIntersect and D3DXMeshIntersect one and the same or something?

Maybe i got the names wrong.

But to be honest they arnt needed if the floor is simple enough.

ace