vtkVisibilitySort.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkVisibilitySort.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.
 
=========================================================================*/
 
/*
 * Copyright 2003 Sandia Corporation.
 * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
 * license for use of this work by or on behalf of the
 * U.S. Government. Redistribution and use in source and binary forms, with
 * or without modification, are permitted provided that this Notice and any
 * statement of authorship are reproduced on all copies.
 */
 
#ifndef vtkVisibilitySort_h
#define vtkVisibilitySort_h
 
#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkObject.h"
 
class vtkIdTypeArray;
class vtkDataSet;
class vtkMatrix4x4;
class vtkCamera;
 
class VTKRENDERINGCORE_EXPORT vtkVisibilitySort : public vtkObject
{
public:
  vtkTypeMacro(vtkVisibilitySort, vtkObject);
  virtual void PrintSelf(ostream &os, vtkIndent indent);
 
 
  virtual void InitTraversal() = 0;
  virtual vtkIdTypeArray *GetNextCells() = 0;
 
 
  vtkSetClampMacro(MaxCellsReturned, int, 1, VTK_INT_MAX);
  vtkGetMacro(MaxCellsReturned, int);
 
 
  virtual void SetModelTransform(vtkMatrix4x4 *mat);
  vtkGetObjectMacro(ModelTransform, vtkMatrix4x4);
 
  vtkGetObjectMacro(InverseModelTransform, vtkMatrix4x4);
 
 
  virtual void SetCamera(vtkCamera *camera);
  vtkGetObjectMacro(Camera, vtkCamera);
 
 
  virtual void SetInput(vtkDataSet *data);
  vtkGetObjectMacro(Input, vtkDataSet);
 
 
  vtkGetMacro(Direction, int);
  vtkSetMacro(Direction, int);
  void SetDirectionToBackToFront() { this->SetDirection(BACK_TO_FRONT); }
  void SetDirectionToFrontToBack() { this->SetDirection(FRONT_TO_BACK); }
 
//BTX
  enum { BACK_TO_FRONT, FRONT_TO_BACK };
//ETX
 
 
  virtual void Register(vtkObjectBase *o);
  virtual void UnRegister(vtkObjectBase *o);
 
protected:
  vtkVisibilitySort();
  virtual ~vtkVisibilitySort();
 
  vtkTimeStamp LastSortTime;
 
  vtkMatrix4x4 *ModelTransform;
  vtkMatrix4x4 *InverseModelTransform;
  vtkCamera *Camera;
  vtkDataSet *Input;
 
  int MaxCellsReturned;
 
  int Direction;
 
  virtual void ReportReferences(vtkGarbageCollector *collector);
 
private:
  vtkVisibilitySort(const vtkVisibilitySort &);  // Not implemented.
  void operator=(const vtkVisibilitySort &);  // Not implemented.
};
 
#endif //vtkVisibilitySort_h