vtkLineRepresentation.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkLineRepresentation.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkLineRepresentation_h
#define vtkLineRepresentation_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWidgetRepresentation.h"
 
class vtkActor;
class vtkConeSource;
class vtkPolyDataMapper;
class vtkLineSource;
class vtkProperty;
class vtkPolyData;
class vtkPolyDataAlgorithm;
class vtkPointHandleRepresentation3D;
class vtkBox;
class vtkFollower;
class vtkVectorText;
class vtkPolyDataMapper;
class vtkCellPicker;
 
class VTKINTERACTIONWIDGETS_EXPORT vtkLineRepresentation : public vtkWidgetRepresentation
{
public:
  static vtkLineRepresentation* New();
 
 
  vtkTypeMacro(vtkLineRepresentation, vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  void GetPoint1WorldPosition(double pos[3]);
  double* GetPoint1WorldPosition() VTK_SIZEHINT(3);
  void GetPoint1DisplayPosition(double pos[3]);
  double* GetPoint1DisplayPosition() VTK_SIZEHINT(3);
  void SetPoint1WorldPosition(double pos[3]);
  void SetPoint1DisplayPosition(double pos[3]);
  void GetPoint2DisplayPosition(double pos[3]);
  double* GetPoint2DisplayPosition() VTK_SIZEHINT(3);
  void GetPoint2WorldPosition(double pos[3]);
  double* GetPoint2WorldPosition() VTK_SIZEHINT(3);
  void SetPoint2WorldPosition(double pos[3]);
  void SetPoint2DisplayPosition(double pos[3]);
 
 
  void SetHandleRepresentation(vtkPointHandleRepresentation3D* handle);
  void InstantiateHandleRepresentation();
 
 
  vtkGetObjectMacro(Point1Representation, vtkPointHandleRepresentation3D);
  vtkGetObjectMacro(Point2Representation, vtkPointHandleRepresentation3D);
  vtkGetObjectMacro(LineHandleRepresentation, vtkPointHandleRepresentation3D);
 
 
  vtkGetObjectMacro(EndPointProperty, vtkProperty);
  vtkGetObjectMacro(SelectedEndPointProperty, vtkProperty);
 
 
  vtkGetObjectMacro(EndPoint2Property, vtkProperty);
  vtkGetObjectMacro(SelectedEndPoint2Property, vtkProperty);
 
 
  vtkGetObjectMacro(LineProperty, vtkProperty);
  vtkGetObjectMacro(SelectedLineProperty, vtkProperty);
 
 
  vtkSetClampMacro(Tolerance, int, 1, 100);
  vtkGetMacro(Tolerance, int);
 
 
  void SetResolution(int res);
  int GetResolution();
 
  void GetPolyData(vtkPolyData* pd);
 
 
  void PlaceWidget(double bounds[6]) override;
  void BuildRepresentation() override;
  int ComputeInteractionState(int X, int Y, int modify = 0) override;
  void StartWidgetInteraction(double e[2]) override;
  void WidgetInteraction(double e[2]) override;
  double* GetBounds() VTK_SIZEHINT(6) override;
 
 
  void GetActors(vtkPropCollection* pc) override;
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
  // Manage the state of the widget
  enum
  {
    Outside = 0,
    OnP1,
    OnP2,
    TranslatingP1,
    TranslatingP2,
    OnLine,
    Scaling
  };
 
 
  vtkSetClampMacro(InteractionState, int, Outside, Scaling);
 
 
  virtual void SetRepresentationState(int);
  vtkGetMacro(RepresentationState, int);
 
 
  void SetDirectionalLine(bool val);
  vtkGetMacro(DirectionalLine, bool);
  vtkBooleanMacro(DirectionalLine, bool);
 
  vtkMTimeType GetMTime() override;
 
  void SetRenderer(vtkRenderer* ren) override;
 
 
  vtkSetMacro(DistanceAnnotationVisibility, vtkTypeBool);
  vtkGetMacro(DistanceAnnotationVisibility, vtkTypeBool);
  vtkBooleanMacro(DistanceAnnotationVisibility, vtkTypeBool);
 
 
  vtkSetStringMacro(DistanceAnnotationFormat);
  vtkGetStringMacro(DistanceAnnotationFormat);
 
 
  void SetDistanceAnnotationScale(double x, double y, double z)
  {
    double scale[3];
    scale[0] = x;
    scale[1] = y;
    scale[2] = z;
    this->SetDistanceAnnotationScale(scale);
  }
  virtual void SetDistanceAnnotationScale(double scale[3]);
  virtual double* GetDistanceAnnotationScale() VTK_SIZEHINT(3);
 
  double GetDistance();
 
  void SetLineColor(double r, double g, double b);
 
  virtual vtkProperty* GetDistanceAnnotationProperty();
 
 
  vtkGetObjectMacro(TextActor, vtkFollower);
 
  enum
  {
    RestrictNone = 0,
    RestrictToX,
    RestrictToY,
    RestrictToZ
  };
 
protected:
  vtkLineRepresentation();
  ~vtkLineRepresentation() override;
 
  // The handle and the rep used to close the handles
  vtkPointHandleRepresentation3D* HandleRepresentation;
  vtkPointHandleRepresentation3D* Point1Representation;
  vtkPointHandleRepresentation3D* Point2Representation;
  vtkPointHandleRepresentation3D* LineHandleRepresentation;
 
  // Manage how the representation appears
  int RepresentationState;
  bool DirectionalLine;
 
  // the line
  vtkActor* LineActor;
  vtkPolyDataMapper* LineMapper;
  vtkLineSource* LineSource;
 
  // glyphs representing hot spots (e.g., handles)
  vtkActor** Handle;
  vtkPolyDataMapper** HandleMapper;
  vtkPolyDataAlgorithm** HandleGeometry;
 
  // Properties used to control the appearance of selected objects and
  // the manipulator in general.
  vtkProperty* EndPointProperty;
  vtkProperty* SelectedEndPointProperty;
  vtkProperty* EndPoint2Property;
  vtkProperty* SelectedEndPoint2Property;
  vtkProperty* LineProperty;
  vtkProperty* SelectedLineProperty;
  void CreateDefaultProperties();
 
  // Selection tolerance for the handles and the line
  int Tolerance;
 
  // Helper members
  int ClampToBounds;
  void ClampPosition(double x[3]);
  void HighlightPoint(int ptId, int highlight);
  void HighlightLine(int highlight);
  int InBounds(double x[3]);
  void SizeHandles();
 
  // Ivars used during widget interaction to hold initial positions
  double StartP1[3];
  double StartP2[3];
  double StartLineHandle[3];
  double Length;
  double LastEventPosition[3];
 
  // Support GetBounds() method
  vtkBox* BoundingBox;
 
  // Need to keep track if we have successfully initialized the display position.
  // The widget tends to do stuff in world coordinates, put if the renderer has
  // not been assigned, then certain operations do not properly update the display
  // position.
  int InitializedDisplayPosition;
 
  // Format for the label
  vtkTypeBool DistanceAnnotationVisibility;
  char* DistanceAnnotationFormat;
 
  vtkFollower* TextActor;
  vtkPolyDataMapper* TextMapper;
  vtkVectorText* TextInput;
  double Distance;
  bool AnnotationTextScaleInitialized;
 
  vtkCellPicker* LinePicker;
 
private:
  vtkLineRepresentation(const vtkLineRepresentation&) = delete;
  void operator=(const vtkLineRepresentation&) = delete;
};
 
#endif