Determine whether a point is below terrain or not

[hkolli]

Hi all

in my project after the terrain is loaded i need to know whether a point is below the landscape for this i wrote like this ---

the point in 3d space is offset

Box1=terrain->getBoundingBox();
if(offset.x<Box1.T minxx || offset.y< Box1.T miny || offset.z < Box1.T minz)

flag = true ;

else
flag = false ;

---------------------------------------------------------------------------'

is it right to do to know whether the point is below the terrain or not

please help

[Acki]

I think you should check for xyz > minxyz and xyz < maxxyz !?!?!

[Dances]

Or if your terrain height differs in different positions draw a line either straight up or straight down and check for a collision. I believe the collision tutorial explains exactly how to do this.

[stodge]

Or if your terrain height differs in different positions draw a line either straight up or straight down and check for a collision. I believe the collision tutorial explains exactly how to do this.

Agreed - cast a ray straight up and check for collisions against the terrain.