func cToGeom(c C.dGeomID) Geom {
base := GeomBase(unsafe.Pointer(c))
var g Geom
switch int(C.dGeomGetClass(c)) {
case SphereClass:
g = Sphere{base}
case BoxClass:
g = Box{base}
case CapsuleClass:
g = Capsule{base}
case CylinderClass:
g = Cylinder{base}
case PlaneClass:
g = Plane{base}
case RayClass:
g = Ray{base}
case HeightfieldClass:
g = Heightfield{base}
case TriMeshClass:
g = TriMesh{base}
default:
g = base
}
return g
}
// Class returns the geometry class.
func (g GeomBase) Class() int {
return int(C.dGeomGetClass(g.c()))
}