3D-Engine in Direct 3D

3D-Engine in Direct 3D

Post by SOrt » Wed, 01 Apr 1998 04:00:00



Hi.....

i work on a 3D-Engine to fly over a 3D-Landscape....
my question, how can i do an collision control of the Objekt's.....
so i have a Plane and a Landscape......how can i check if the plane touch the
landscape?????

Thanx....Stefan

 
 
 

3D-Engine in Direct 3D

Post by Paul Calli » Fri, 03 Apr 1998 04:00:00



> Hi.....

> i work on a 3D-Engine to fly over a 3D-Landscape....
> my question, how can i do an collision control of the Objekt's.....
> so i have a Plane and a Landscape......how can i check if the plane touch the
> landscape?????

> Thanx....Stefan

Orient the Landscape so that up lies along a major axis (X, Y or Z).  Then usea
simple test using the terrain height vs. the plane's altitude at a certain point
on a plane that is perpendicular to the height.

In english:

1.  Coordinate system is East=X, North=Y, Up=Z.
2.  Calculate height of terrain at the plane's X,Y coordinate.
3.  Compare terrain height to plane's Z coordinate.

-Dragon Glare

 
 
 

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