/***************************************************************************
 *   Copyright (c) 2013      Luke Parry <l.parry@warwick.ac.uk>            *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#ifndef MEASURE_MEASUREMENT_H
#define MEASURE_MEASUREMENT_H

#include <Base/BaseClass.h>
#include <Base/Vector3D.h>

#include <App/DocumentObject.h>
#include <App/PropertyLinks.h>

class TopoDS_Shape;
namespace Measure
{
 enum MeasureType {
        Volumes, // Measure the Volume(s)
        Edges, // Measure the Edge(s)
        Surfaces, // Measure the surface(s)
        Points,
        PointToPoint, // Measure between TWO points
        PointToEdge, // Measure between ONE point and ONE edge
        PointToSurface, // Measure between ONE point and ONE surface
        EdgeToEdge, // Measure between TWO edges
        Invalid
    };

class MeasureExport Measurement : public Base::BaseClass {
      TYPESYSTEM_HEADER();
public:

    App::PropertyLinkSubList References3D;

public:
    Measurement();
    ~Measurement();

    void clear();
    bool has3DReferences();

    /// Add a reference
    int addReference3D(App::DocumentObject* obj, const std::string& subName);
    int addReference3D(App::DocumentObject* obj, const char *subName);

    MeasureType getType();

     // from base class
    virtual PyObject *getPyObject(void);
    virtual unsigned int getMemSize(void) const;

public:
  // Methods for distances (edge length, two points, edge and a point
  double length() const;
  Base::Vector3d delta() const;                                                 //when would client use delta??

  // Calculates the radius for an arc or circular edge
  double radius() const;

  // Calculates the angle between two edges
  double angle(const Base::Vector3d &param = Base::Vector3d(0,0,0)) const;      //param is never used???

  // Calculate volumetric/mass properties
  Base::Vector3d massCenter() const;

protected:
  TopoDS_Shape getShape(App::DocumentObject *obj , const char *subName) const;
  MeasureType measureType;
  Py::Object PythonObject;
};


} //namespace measure


#endif // MEASURE_MEASUREMENT_H