vtkPolyLineRepresentation.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkPolyLineRepresentation_h
#define vtkPolyLineRepresentation_h
 
#include "vtkCurveRepresentation.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
 
VTK_ABI_NAMESPACE_BEGIN
class vtkPolyLineSource;
class vtkPointHandleSource;
 
class VTKINTERACTIONWIDGETS_EXPORT vtkPolyLineRepresentation : public vtkCurveRepresentation
{
public:
  static vtkPolyLineRepresentation* New();
  vtkTypeMacro(vtkPolyLineRepresentation, vtkCurveRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void GetPolyData(vtkPolyData* pd) override;
 
  void SetNumberOfHandles(int npts) override;
 
  vtkDoubleArray* GetHandlePositions() override;
 
  double GetSummedLength() override;
 
  void InitializeHandles(vtkPoints* points) override;
 
  void BuildRepresentation() override;
 
protected:
  vtkPolyLineRepresentation();
  ~vtkPolyLineRepresentation() override;
 
  // The poly line source
  vtkNew<vtkPolyLineSource> PolyLineSource;
 
  int InsertHandleOnLine(double* pos) override;
 
  void ClearHandles();
 
  void AllocateHandles(int npts);
 
  void CreateDefaultHandles(int npts);
 
  void ReconfigureHandles(int npts);
 
  // Specialized methods to access handles
  vtkActor* GetHandleActor(int index) override;
  vtkHandleSource* GetHandleSource(int index) override;
  int GetHandleIndex(vtkProp* prop) override;
 
private:
  vtkPolyLineRepresentation(const vtkPolyLineRepresentation&) = delete;
  void operator=(const vtkPolyLineRepresentation&) = delete;
 
  // Glyphs representing hot spots (e.g., handles)
  std::vector<vtkSmartPointer<vtkPointHandleSource>> PointHandles;
  std::vector<vtkSmartPointer<vtkActor>> HandleActors;
};
 
VTK_ABI_NAMESPACE_END
#endif