vtkBiDimensionalRepresentation2D.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkBiDimensionalRepresentation2D_h
#define vtkBiDimensionalRepresentation2D_h
 
#include "vtkBiDimensionalRepresentation.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
 
VTK_ABI_NAMESPACE_BEGIN
class vtkHandleRepresentation;
class vtkCellArray;
class vtkPoints;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkTextMapper;
class vtkActor2D;
class vtkProperty2D;
class vtkTextProperty;
 
class VTKINTERACTIONWIDGETS_EXPORT vtkBiDimensionalRepresentation2D
  : public vtkBiDimensionalRepresentation
{
public:
  static vtkBiDimensionalRepresentation2D* New();
 
 
  vtkTypeMacro(vtkBiDimensionalRepresentation2D, vtkBiDimensionalRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkGetObjectMacro(LineProperty, vtkProperty2D);
  vtkGetObjectMacro(SelectedLineProperty, vtkProperty2D);
 
 
  vtkGetObjectMacro(TextProperty, vtkTextProperty);
 
  // Used to communicate about the state of the representation
  enum
  {
    Outside = 0,
    NearP1,
    NearP2,
    NearP3,
    NearP4,
    OnL1Inner,
    OnL1Outer,
    OnL2Inner,
    OnL2Outer,
    OnCenter
  };
 
 
  void BuildRepresentation() override;
  int ComputeInteractionState(int X, int Y, int modify = 0) override;
  void StartWidgetDefinition(double e[2]) override;
  void Point2WidgetInteraction(double e[2]) override;
  void Point3WidgetInteraction(double e[2]) override;
  void StartWidgetManipulation(double e[2]) override;
  void WidgetInteraction(double e[2]) override;
  void Highlight(int highlightOn) override;
 
 
  void ReleaseGraphicsResources(vtkWindow* w) override;
  int RenderOverlay(vtkViewport* viewport) override;
 
  char* GetLabelText() override;
 
 
  double* GetLabelPosition() override;
  void GetLabelPosition(double pos[3]) override;
  void GetWorldLabelPosition(double pos[3]) override;
 
protected:
  vtkBiDimensionalRepresentation2D();
  ~vtkBiDimensionalRepresentation2D() override;
 
  // Geometry of the lines
  vtkCellArray* LineCells;
  vtkPoints* LinePoints;
  vtkPolyData* LinePolyData;
  vtkPolyDataMapper2D* LineMapper;
  vtkActor2D* LineActor;
  vtkProperty2D* LineProperty;
  vtkProperty2D* SelectedLineProperty;
 
  // The labels for the line lengths
  vtkTextProperty* TextProperty;
  vtkTextMapper* TextMapper;
  vtkActor2D* TextActor;
 
  // Helper method
  void ProjectOrthogonalPoint(
    double x[4], double y[3], double x1[3], double x2[3], double x21[3], double dir, double xP[3]);
 
private:
  vtkBiDimensionalRepresentation2D(const vtkBiDimensionalRepresentation2D&) = delete;
  void operator=(const vtkBiDimensionalRepresentation2D&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif