vtkPointPicker.h

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

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

VTK_ABI_NAMESPACE_BEGIN
class vtkDataSet;

class VTKRENDERINGCORE_EXPORT VTK_MARSHALAUTO vtkPointPicker : public vtkPicker
{
public:

  static vtkPointPicker* New();
  vtkTypeMacro(vtkPointPicker, vtkPicker);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkGetMacro(PointId, vtkIdType);


  vtkSetMacro(UseCells, vtkTypeBool);
  vtkGetMacro(UseCells, vtkTypeBool);
  vtkBooleanMacro(UseCells, vtkTypeBool);

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

  vtkIdType PointId;    // picked point
  vtkTypeBool UseCells; // Use cell points vs. points directly

  double IntersectWithLine(const double p1[3], const double p2[3], double tol,
    vtkAssemblyPath* path, vtkProp3D* p, vtkAbstractMapper3D* m) override;
  void Initialize() override;

  vtkIdType IntersectDataSetWithLine(const double p1[3], double ray[3], double rayFactor,
    double tol, vtkDataSet* dataSet, double& tMin, double minXYZ[3]);

private:
  vtkPointPicker(const vtkPointPicker&) = delete;
  void operator=(const vtkPointPicker&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif