vtkCompositePainter.h

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

  Program:   Visualization Toolkit
  Module:    vtkCompositePainter.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 vtkCompositePainter_h
#define vtkCompositePainter_h

#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkPainter.h"
#include "vtkColor.h" // needed for vtkColor3d
#include <stack> //  needed for RenderBlockState.

class vtkCompositeDataDisplayAttributes;
class vtkInformationObjectBaseKey;
class vtkProperty;
class vtkRenderWindow;

class VTKRENDERINGOPENGL_EXPORT vtkCompositePainter : public vtkPainter
{
public:
  static vtkCompositePainter* New();
  vtkTypeMacro(vtkCompositePainter, vtkPainter);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual vtkDataObject* GetOutput();

  static vtkInformationObjectBaseKey* DISPLAY_ATTRIBUTES();

  void SetCompositeDataDisplayAttributes(vtkCompositeDataDisplayAttributes *attributes);
  vtkGetObjectMacro(CompositeDataDisplayAttributes, vtkCompositeDataDisplayAttributes)

protected:
  vtkCompositePainter();
  ~vtkCompositePainter();

  void ReportReferences(vtkGarbageCollector *collector) VTK_OVERRIDE;

  virtual void ProcessInformation(vtkInformation* information);

  virtual void RenderInternal(vtkRenderer* renderer, vtkActor* actor,
    unsigned long typeflags, bool forceCompileOnly);

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

    double RenderedOpacity;
    vtkColor3d RenderedAmbientColor;
    vtkColor3d RenderedDiffuseColor;
    vtkColor3d RenderedSpecularColor;
  };

  void RenderBlock(vtkRenderer *renderer,
                   vtkActor *actor,
                   unsigned long typeflags,
                   bool forceCompileOnly,
                   vtkDataObject *dobj,
                   unsigned int &flat_index,
                   RenderBlockState &state);

  virtual void UpdateRenderingState(
    vtkRenderWindow*, vtkProperty*, RenderBlockState&) {}

  vtkDataObject* OutputData;
  vtkCompositeDataDisplayAttributes *CompositeDataDisplayAttributes;
private:
  vtkCompositePainter(const vtkCompositePainter&) VTK_DELETE_FUNCTION;
  void operator=(const vtkCompositePainter&) VTK_DELETE_FUNCTION;

};

#endif