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

  Program:   Visualization Toolkit
  Module:    vtkVRMLExporter.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.

=========================================================================*/
/**
 * @class   vtkVRMLExporter
 * @brief   export a scene into VRML 2.0 format.
 *
 * vtkVRMLExporter is a concrete subclass of vtkExporter that writes VRML 2.0
 * files. This is based on the VRML 2.0 draft #3 but it should be pretty
 * stable since we aren't using any of the newer features.
 *
 * @sa
 * vtkExporter
*/

#ifndef vtkVRMLExporter_h
#define vtkVRMLExporter_h

#include "vtkIOExportModule.h" // For export macro
#include "vtkExporter.h"

class vtkLight;
class vtkActor;
class vtkPoints;
class vtkDataArray;
class vtkUnsignedCharArray;
class vtkPolyData;
class vtkPointData;

class VTKIOEXPORT_EXPORT vtkVRMLExporter : public vtkExporter
{
public:
  static vtkVRMLExporter *New();
  vtkTypeMacro(vtkVRMLExporter,vtkExporter);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  //@{
  /**
   * Specify the name of the VRML file to write.
   */
  vtkSetStringMacro(FileName);
  vtkGetStringMacro(FileName);
  //@}

  //@{
  /**
   * Specify the Speed of navigation. Default is 4.
   */
  vtkSetMacro(Speed,double);
  vtkGetMacro(Speed,double);
  //@}

  /**
   * Set the file pointer to write to. This will override
   * a FileName if specified.
   */
  void SetFilePointer(FILE *);

protected:
  vtkVRMLExporter();
  ~vtkVRMLExporter() override;

  void WriteData() override;
  void WriteALight(vtkLight *aLight, FILE *fp);
  void WriteAnActor(vtkActor *anActor, FILE *fp);
  void WritePointData(vtkPoints *points, vtkDataArray *normals,
                      vtkDataArray *tcoords, vtkUnsignedCharArray *colors,
                      FILE *fp);
  void WriteShapeBegin(vtkActor* actor, FILE *fileP,
                       vtkPolyData *polyData,vtkPointData *pntData,
                       vtkUnsignedCharArray *color);
  void WriteShapeEnd( FILE *fileP );
  char *FileName;
  FILE *FilePointer;
  double Speed;
private:
  vtkVRMLExporter(const vtkVRMLExporter&) = delete;
  void operator=(const vtkVRMLExporter&) = delete;
};

#endif