Question about terrain

[franck22000]

Hello I still have some difficulties to deal with terrain so here is my question.

 

How can i get the terrain height at the camera position ? Do someone can give me a simple example code ?

 

Thanks !

[Flexman]

I found this function I used to pass a position and a sample height height that returns the terrain height as well as any mesh object above it.

 

' RETURNS Y AS GROUNDHEIGHT '
Function GetPointOnGround:TVec3(pos:TVec3 var, pickheight:Float = 0)
Local retpos:TVec3;
pos.y = TerrainElevation(TTerrain(game.scene.terrain), pos.x, pos.z) ;
if (pickheight > 0)
	Local pick:TPick;
	pick = LinePick(Vec3(pos.x, pos.y + pickheight, pos.z), pos) ;
	if (pick <> null)
		pos.y = pick.y;
	End If
End If
retpos = pos;
Return retpos;
End Function

 

This next bit of code is simpler, it returns the height ABOVE the terrain rather than the actual terrain height but you can see how it works easily enough to adapt. It relies that you have access to the terrain entity which is normally done through some scene processor function if you're loading it from a file.

 

CamHeightAboveTerrain = MyCamera.Position.y - TerrainElevation(TTerrain(game.scene.terrain), MyCamera.Position.x, MyCamera.Position.z) ;