TGeoToStep.cxx

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// @(#)geom/geocad:$Id$
// Author: Cinzia Luzzi   5/5/2012

/*************************************************************************
 * Copyright (C) 1995-2012, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

/** \class TGeoToStep
\ingroup Geometry_cad

This class is an interface to convert ROOT's geometry file
to STEP file. The TGeoToStep Class takes a gGeoManager pointer and gives
back a STEP file. gGeoManager is the instance of TGeoManager class
containing tree of geometries creating resulting geometry.
Standard for the Exchange of Product model data (STEP) is an international
standard for the exchange of industrial product data. It is typically used
to exchange data between various CAD, CAM and CAE applications.
TGeoToStep Class is using RootOCC class to translate the root geometry
in the corresponding OpenCascade geometry and  and TOCCToStep to write the
OpenCascade geometry to the step File.
OpenCascade Technology (OCC) is a software development platform freely
available in open source. It includes C++ components for 3D surface and
solid modeling,visualization, data exchange and rapid application
development. For more information about OCC see http://www.opencascade.org
Each object in ROOT is represented by an OCC TopoDS_Shape

This class is needed to be instantiated and can be used calling the
CreateGeometry method:

~~~ {.cpp}
  TGeoToStep * mygeom= new TGeoToStep(gGeoManager);
  mygeom->CreateGeometry();
~~~

The resulting STEP file will be saved in the current directory and called
geometry.stp
To compile the TGeoCad module on ROOT, OpenCascade must be installed!
*/

#include "TGeoManager.h"
#include "TOCCToStep.h"
#include "TGeoToStep.h"
#include "TString.h"
#include "TClass.h"

ClassImp(TGeoToStep);

TGeoToStep::TGeoToStep():TObject(), fGeometry(0)
{

}

TGeoToStep::TGeoToStep(TGeoManager *geom):TObject(), fGeometry(geom)
{

}

TGeoToStep::~TGeoToStep()
{
   if (fGeometry) delete fGeometry;
}

void * TGeoToStep::CreateGeometry()
{
   //ROOT CAD CONVERSION
   fCreate = new TOCCToStep();
   fCreate->OCCShapeCreation(fGeometry);
   fCreate->OCCTreeCreation(fGeometry);
   fCreate->OCCWriteStep("geometry.stp");
   //fCreate->PrintAssembly();
   delete(fCreate);
   return NULL;
}