vtkSingleVTPExporter.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkSingleVTPExporter_h
#define vtkSingleVTPExporter_h
 
#include "vtkExporter.h"
#include "vtkIOExportModule.h" // For export macro
#include <vector>              // for method args
 
VTK_ABI_NAMESPACE_BEGIN
class vtkActor;
class vtkPolyData;
class vtkTexture;
 
class VTKIOEXPORT_EXPORT vtkSingleVTPExporter : public vtkExporter
{
public:
  static vtkSingleVTPExporter* New();
  vtkTypeMacro(vtkSingleVTPExporter, vtkExporter);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkSetFilePathMacro(FilePrefix);
  vtkGetFilePathMacro(FilePrefix);
 
  // computes the file prefix from a filename by removing
  // the .vtp extension if present. Useful for APIs that
  // are filename centric.
  void SetFileName(VTK_FILEPATH const char*);
 
protected:
  vtkSingleVTPExporter();
  ~vtkSingleVTPExporter() override;
 
  void WriteData() override;
 
  class actorData
  {
  public:
    vtkActor* Actor = nullptr;
    vtkTexture* Texture = nullptr;
    int ImagePosition[2];
    double URange[2];
    double VRange[2];
    bool HaveRepeatingTexture = false;
  };
  int TextureSize[2];
  void WriteTexture(std::vector<actorData>& actors);
  void WriteVTP(std::vector<actorData>& actors);
  char* FilePrefix;
 
  // handle repeating textures by subdividing triangles
  // so that they do not span mode than 0.0-1.5 of texture
  // range.
  vtkPolyData* FixTextureCoordinates(vtkPolyData*);
 
  // recursive method that handles one triangle
  void ProcessTriangle(const vtkIdType* pts, vtkPolyData* out);
 
private:
  vtkSingleVTPExporter(const vtkSingleVTPExporter&) = delete;
  void operator=(const vtkSingleVTPExporter&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif