vtkCameraPathRepresentation.h

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

#include "vtkAbstractSplineRepresentation.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWrappingHints.h"            // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkCameraHandleSource;
class vtkCamera;

class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO vtkCameraPathRepresentation
  : public vtkAbstractSplineRepresentation
{
public:
  static vtkCameraPathRepresentation* New();
  vtkTypeMacro(vtkCameraPathRepresentation, vtkAbstractSplineRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void SetDirectional(bool val) override;

  void SetNumberOfHandles(int npts) override;

  void SetParametricSpline(vtkParametricSpline* spline) override;

  void InitializeHandles(vtkPoints* points) override;

  void BuildRepresentation() override;

  void AddCameraAt(vtkCamera* camera, int index);

  void DeleteCameraAt(int index);

protected:
  vtkCameraPathRepresentation();
  ~vtkCameraPathRepresentation() override = default;

  void SizeHandles() override;

  void ClearCameraHandles();

  void InsertCamera(vtkCamera* camera, int index);

  void CreateDefaultHandles(int npts);

  void ReconfigureHandles(int newNPts, int oldNPts);

  int InsertHandleOnLine(double* pos) override;

  void EraseHandle(const int&) override;

  // Specialized methods to access handles
  vtkActor* GetHandleActor(int index) override;
  vtkHandleSource* GetHandleSource(int index) override;
  int GetHandleIndex(vtkProp* prop) override;

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

  void RebuildRepresentation();

  void UpdateConfiguration(int npts);

  std::vector<vtkSmartPointer<vtkCameraHandleSource>> CameraHandles;
  std::vector<vtkSmartPointer<vtkActor>> HandleActors;
};

VTK_ABI_NAMESPACE_END
#endif