internal Transform PlacementTransform()
{
IfcObjectPlacement p = ObjectPlacement;
if (p == null)
{
return(Transform.Identity);
}
return(p.Transform());
}
public override Transform Transform()
{
IfcObjectPlacement placementRelTo = PlacementRelTo;
IfcAxis2Placement relativePlacement = RelativePlacement;
bool identityRelative = relativePlacement == null;
if (relativePlacement != null)
{
if (mDatabase != null && relativePlacement.Plane.IsValid)
{
Plane plane = relativePlacement.Plane;
if (plane.Origin.DistanceTo(Point3d.Origin) < mDatabase.Tolerance && plane.XAxis.IsParallelTo(Vector3d.XAxis) == 1 && plane.YAxis.IsParallelTo(Vector3d.YAxis) == 1)
{
identityRelative = true;
}
}
else
{
identityRelative = relativePlacement.IsXYPlane;
}
}
if (placementRelTo == null || placementRelTo.isXYPlane)
{
if (identityRelative)
{
return(Rhino.Geometry.Transform.Identity);
}
else
{
return(Rhino.Geometry.Transform.ChangeBasis(relativePlacement.Plane, Plane.WorldXY));
}
}
if (identityRelative)
{
return(placementRelTo.Transform());
}
return(placementRelTo.Transform() * Rhino.Geometry.Transform.ChangeBasis(relativePlacement.Plane, Plane.WorldXY));
}