vtkLabeledContourMapper.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkLabeledContourMapper_h
#define vtkLabeledContourMapper_h

#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkWrappingHints.h"       // For VTK_MARSHALAUTO

#include "vtkMapper.h"
#include "vtkNew.h"          // For vtkNew
#include "vtkSmartPointer.h" // For vtkSmartPointer

VTK_ABI_NAMESPACE_BEGIN
class vtkDoubleArray;
class vtkTextActor3D;
class vtkTextProperty;
class vtkTextPropertyCollection;
class vtkPolyData;
class vtkPolyDataMapper;

class VTKRENDERINGCORE_EXPORT VTK_MARSHALAUTO vtkLabeledContourMapper : public vtkMapper
{
public:
  static vtkLabeledContourMapper* New();
  vtkTypeMacro(vtkLabeledContourMapper, vtkMapper);
  void PrintSelf(ostream& os, vtkIndent indent) override;

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


  void SetInputData(vtkPolyData* in);
  vtkPolyData* GetInput();


  double* GetBounds() override;
  void GetBounds(double bounds[6]) override;

  virtual void SetTextProperty(vtkTextProperty* tprop);


  virtual void SetTextProperties(vtkTextPropertyCollection* coll);
  virtual vtkTextPropertyCollection* GetTextProperties();


  virtual vtkDoubleArray* GetTextPropertyMapping();
  virtual void SetTextPropertyMapping(vtkDoubleArray* mapping);


  vtkSetMacro(LabelVisibility, bool);
  vtkGetMacro(LabelVisibility, bool);
  vtkBooleanMacro(LabelVisibility, bool);


  vtkSetMacro(SkipDistance, double);
  vtkGetMacro(SkipDistance, double);


  vtkGetNewMacro(PolyDataMapper, vtkPolyDataMapper);
  virtual void SetPolyDataMapper(vtkPolyDataMapper*);

  void ReleaseGraphicsResources(vtkWindow*) override;

protected:
  vtkLabeledContourMapper();
  ~vtkLabeledContourMapper() override;

  virtual void ComputeBounds();

  int FillInputPortInformation(int, vtkInformation*) override;

  void Reset();

  bool CheckInputs(vtkRenderer* ren);
  bool CheckRebuild(vtkRenderer* ren, vtkActor* act);
  bool PrepareRender(vtkRenderer* ren, vtkActor* act);
  bool PlaceLabels();
  bool ResolveLabels();
  virtual bool CreateLabels(vtkActor* actor);
  bool BuildStencilQuads();
  virtual bool ApplyStencil(vtkRenderer* ren, vtkActor* act);
  bool RenderPolyData(vtkRenderer* ren, vtkActor* act);
  virtual bool RemoveStencil(vtkRenderer* ren);
  bool RenderLabels(vtkRenderer* ren, vtkActor* act);

  bool AllocateTextActors(vtkIdType num);
  bool FreeTextActors();

  double SkipDistance = false;

  bool LabelVisibility = true;
  vtkIdType NumberOfTextActors = 0;
  vtkIdType NumberOfUsedTextActors = 0;
  vtkTextActor3D** TextActors = nullptr;

  vtkNew<vtkPolyDataMapper> PolyDataMapper;
  vtkSmartPointer<vtkTextPropertyCollection> TextProperties;
  vtkSmartPointer<vtkDoubleArray> TextPropertyMapping;

  float* StencilQuads = nullptr;
  vtkIdType StencilQuadsSize = 0;
  unsigned int* StencilQuadIndices = nullptr;
  vtkIdType StencilQuadIndicesSize = 0;
  void FreeStencilQuads();

  vtkTimeStamp LabelBuildTime;

private:
  vtkLabeledContourMapper(const vtkLabeledContourMapper&) = delete;
  void operator=(const vtkLabeledContourMapper&) = delete;

  struct Private;
  Private* Internal;
};

VTK_ABI_NAMESPACE_END
#endif