gp_Pnt IfcGeom::point_above_plane(const gp_Pln& pln, bool agree) {
if ( agree ) {
return pln.Location().Translated(pln.Axis().Direction());
} else {
return pln.Location().Translated(-pln.Axis().Direction());
}
}
void CFace::GetPlaneParams(gp_Pln &p)
{
// returns a plane for the underlying surface
BRepAdaptor_Surface surface(m_topods_face, Standard_True);
GeomAbs_SurfaceType surface_type = surface.GetType();
if(surface_type == GeomAbs_Plane)
{
p = surface.Plane();
}
else
{
IsAPlane(&p);
if( m_topods_face.Orientation()== TopAbs_REVERSED )
{
p = gp_Pln(p.Axis().Location(), -p.Axis().Direction());
}
}
}
