vtkCompositePolyDataMapper2.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkCompositePolyDataMapper2.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkCompositePolyDataMapper2_h
#define vtkCompositePolyDataMapper2_h

#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkSmartPointer.h" // for vtkSmartPointer
#include "vtkOpenGLPolyDataMapper.h"

#include "vtkColor.h" // used for ivars
#include <map> // use for ivars
#include <stack> // used for ivars

class vtkCompositeDataDisplayAttributes;
class vtkCompositeMapperHelper2;
class vtkCompositeMapperHelperData;

class VTKRENDERINGOPENGL2_EXPORT vtkCompositePolyDataMapper2 : public vtkOpenGLPolyDataMapper
{
public:
  static vtkCompositePolyDataMapper2* New();
  vtkTypeMacro(vtkCompositePolyDataMapper2, vtkOpenGLPolyDataMapper);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual bool GetIsOpaque();


  void SetCompositeDataDisplayAttributes(vtkCompositeDataDisplayAttributes *attributes);
  vtkCompositeDataDisplayAttributes* GetCompositeDataDisplayAttributes();


  void SetBlockVisibility(unsigned int index, bool visible);
  bool GetBlockVisibility(unsigned int index) const;
  void RemoveBlockVisibility(unsigned int index);
  void RemoveBlockVisibilites();


  void SetBlockColor(unsigned int index, double color[3]);
  void SetBlockColor(unsigned int index, double r, double g, double b)
  {
    double color[3] = {r, g, b};
    this->SetBlockColor(index, color);
  }
  double* GetBlockColor(unsigned int index);
  void RemoveBlockColor(unsigned int index);
  void RemoveBlockColors();


  void SetBlockOpacity(unsigned int index, double opacity);
  double GetBlockOpacity(unsigned int index);
  void RemoveBlockOpacity(unsigned int index);
  void RemoveBlockOpacities();

  void ReleaseGraphicsResources(vtkWindow *);

  virtual void Render(vtkRenderer *ren, vtkActor *act);

protected:
  vtkCompositePolyDataMapper2();
  ~vtkCompositePolyDataMapper2();

  vtkExecutive* CreateDefaultExecutive();

  virtual int FillInputPortInformation(int port, vtkInformation* info);

  virtual void ComputeBounds();

  vtkTimeStamp BoundsMTime;

  // what "index" are we currently rendering, -1 means none
  int CurrentFlatIndex;
  std::map<const std::string, vtkCompositeMapperHelper2 *> Helpers;
  std::map<vtkPolyData *, vtkCompositeMapperHelperData *> HelperDataMap;
  vtkTimeStamp HelperMTime;

  // copy values to the helpers
  void CopyMapperValuesToHelper(vtkCompositeMapperHelper2 *helper);

  class RenderBlockState
  {
    public:
      std::stack<bool> Visibility;
      std::stack<double> Opacity;
      std::stack<vtkColor3d> AmbientColor;
      std::stack<vtkColor3d> DiffuseColor;
      std::stack<vtkColor3d> SpecularColor;
  };

  void BuildRenderValues(vtkRenderer *renderer,
    vtkActor *actor,
    vtkDataObject *dobj,
    unsigned int &flat_index);
  vtkTimeStamp RenderValuesBuildTime;

  RenderBlockState BlockState;
  void RenderBlock(vtkRenderer *renderer,
                   vtkActor *actor,
                   vtkDataObject *dobj,
                   unsigned int &flat_index);

  vtkSmartPointer<vtkCompositeDataDisplayAttributes> CompositeAttributes;

  friend class vtkCompositeMapperHelper2;

private:
  vtkMTimeType LastOpaqueCheckTime;
  bool LastOpaqueCheckValue;
  double ColorResult[3];

  vtkCompositePolyDataMapper2(const vtkCompositePolyDataMapper2&) VTK_DELETE_FUNCTION;
  void operator=(const vtkCompositePolyDataMapper2&) VTK_DELETE_FUNCTION;

};

#endif