VTKViewer_PolyDataMapper.h

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// Copyright (C) 2007-2025  CEA, EDF, 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