// Ask for the ground plane in the global coordinate system
double global_ground[4];
float global_vel[3];
- const SGMaterial* material;
+ const simgear::BVHMaterial* material;
_ground_cb->getGroundPlane(pt, global_ground, global_vel, &material);
g->setGlobalGround(global_ground, global_vel, pt[0], pt[1], material);
}