vtkAffineRepresentation.h

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

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

VTK_ABI_NAMESPACE_BEGIN
class vtkTransform;

class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO vtkAffineRepresentation
  : public vtkWidgetRepresentation
{
public:

  vtkTypeMacro(vtkAffineRepresentation, vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  virtual void GetTransform(vtkTransform* t) = 0;


  vtkSetClampMacro(Tolerance, int, 1, 100);
  vtkGetMacro(Tolerance, int);

  // Enums define the state of the representation relative to the mouse pointer
  // position. Used by ComputeInteractionState() to communicate with the
  // widget.
  enum InteractionStateType
  {
    Outside = 0,
    Rotate,
    Translate,
    TranslateX,
    TranslateY,
    ScaleWEdge,
    ScaleEEdge,
    ScaleNEdge,
    ScaleSEdge,
    ScaleNE,
    ScaleSW,
    ScaleNW,
    ScaleSE,
    ShearEEdge,
    ShearWEdge,
    ShearNEdge,
    ShearSEdge,
    MoveOriginX,
    MoveOriginY,
    MoveOrigin
  };

  void ShallowCopy(vtkProp* prop) override;

protected:
  vtkAffineRepresentation();
  ~vtkAffineRepresentation() override;

  // The tolerance for selecting different parts of the widget.
  int Tolerance;

  // The internal transformation matrix
  vtkTransform* Transform;

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

VTK_ABI_NAMESPACE_END
#endif