VTKViewer_PolyDataMapper.h

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// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

#ifndef VTKViewer_POLYDATAMAPPER_H
#define VTKViewer_POLYDATAMAPPER_H

#include "VTKViewer.h"
#include "VTKViewer_MarkerDef.h"

#ifdef WIN32
#include <windows.h>
#endif

#include <map>

#ifdef __APPLE__
#include <OpenGL/gl.h>
#else
#include <GL/gl.h>
#endif

#include <vtkSmartPointer.h>

class vtkImageData;

#ifndef VTK_IMPLEMENT_MESA_CXX
#include <vtkOpenGLPolyDataMapper.h>
#define MAPPER_SUPERCLASS vtkOpenGLPolyDataMapper
#else
#include <vtkMesaPolyDataMapper.h>
#define MAPPER_SUPERCLASS vtkMesaPolyDataMapper
#endif

#include "VTKViewer_OpenGLHelper.h"

//----------------------------------------------------------------------------

class VTKVIEWER_EXPORT VTKViewer_PolyDataMapper : public MAPPER_SUPERCLASS
{
public:
  enum ExtensionsState { ES_None = 0, ES_Error, ES_Ok };

public:
  static VTKViewer_PolyDataMapper* New();
  vtkTypeMacro( VTKViewer_PolyDataMapper, MAPPER_SUPERCLASS );

  void SetMarkerEnabled( bool );

  void SetBallEnabled( bool );
  
  bool GetBallEnabled( );

  void SetBallScale( double );

  double GetBallScale( );

  void SetMarkerStd( VTK::MarkerType, VTK::MarkerScale );

  void SetMarkerTexture( int, VTK::MarkerTexture );

  VTK::MarkerType GetMarkerType();

  VTK::MarkerScale GetMarkerScale();

  int GetMarkerTexture();

  virtual void RenderPiece( vtkRenderer*, vtkActor* );
#ifndef VTK_OPENGL2
  virtual int Draw( vtkRenderer*, vtkActor* );
#else
  virtual void RenderPieceDraw( vtkRenderer*, vtkActor* );
#endif    

protected:
  VTKViewer_PolyDataMapper();
  ~VTKViewer_PolyDataMapper();

  int               InitExtensions();

  void              InitPointSprites();

  void              CleanupPointSprites();

  void              InitTextures();

  int               InitShader();

  void              InternalDraw(vtkRenderer*, vtkActor*);

private:
  int               ExtensionsInitialized;

  GLuint            PointSpriteTexture;

  vtkSmartPointer<vtkImageData> ImageData;

  VTKViewer_OpenGLHelper OpenGLHelper;
  GLhandleARB PointProgram;
#ifdef VTK_OPENGL2
  GLhandleARB VertexShader;
  GLhandleARB FragmentShader;
  GLuint      VertexArrayObject;
#endif

  struct Locations {
    static const GLint INVALID_LOCATION = -1;

    GLint ModelViewProjection;
    GLint Projection;
    GLint GeneralPointSize;
    GLint PointSprite;

    Locations()
    : ModelViewProjection (INVALID_LOCATION),
      Projection          (INVALID_LOCATION),
      GeneralPointSize    (INVALID_LOCATION),
      PointSprite         (INVALID_LOCATION)
    {
          //
    }
  } myLocations;

  bool              MarkerEnabled;
  bool              BallEnabled;
  double            BallScale;
  VTK::MarkerType   MarkerType;
  VTK::MarkerScale  MarkerScale;
  int               MarkerId;

  typedef std::map< int, vtkSmartPointer<vtkImageData> > ImageDataMap;
  ImageDataMap      StandardTextures;
  ImageDataMap      CustomTextures;
  ImageDataMap      SpecialTextures;  //special predefined textures, used to draw point sprites.
};

#endif