vtkLeaderActor2D.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkLeaderActor2D.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 vtkLeaderActor2D_h
#define vtkLeaderActor2D_h
 
#include "vtkActor2D.h"
#include "vtkRenderingAnnotationModule.h" // For export macro
 
class vtkPoints;
class vtkCellArray;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkTextMapper;
class vtkTextProperty;
 
class VTKRENDERINGANNOTATION_EXPORT vtkLeaderActor2D : public vtkActor2D
{
public:
  vtkTypeMacro(vtkLeaderActor2D, vtkActor2D);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkLeaderActor2D* New();
 
 
  vtkSetMacro(Radius, double);
  vtkGetMacro(Radius, double);
 
 
  vtkSetStringMacro(Label);
  vtkGetStringMacro(Label);
 
 
  virtual void SetLabelTextProperty(vtkTextProperty* p);
  vtkGetObjectMacro(LabelTextProperty, vtkTextProperty);
 
 
  vtkSetClampMacro(LabelFactor, double, 0.1, 2.0);
  vtkGetMacro(LabelFactor, double);
 
  // Enums defined to support methods for control of arrow placement and
  // and appearance of arrow heads.
  enum
  {
    VTK_ARROW_NONE = 0,
    VTK_ARROW_POINT1,
    VTK_ARROW_POINT2,
    VTK_ARROW_BOTH
  };
  enum
  {
    VTK_ARROW_FILLED = 0,
    VTK_ARROW_OPEN,
    VTK_ARROW_HOLLOW
  };
 
 
  vtkSetClampMacro(ArrowPlacement, int, VTK_ARROW_NONE, VTK_ARROW_BOTH);
  vtkGetMacro(ArrowPlacement, int);
  void SetArrowPlacementToNone() { this->SetArrowPlacement(VTK_ARROW_NONE); }
  void SetArrowPlacementToPoint1() { this->SetArrowPlacement(VTK_ARROW_POINT1); }
  void SetArrowPlacementToPoint2() { this->SetArrowPlacement(VTK_ARROW_POINT2); }
  void SetArrowPlacementToBoth() { this->SetArrowPlacement(VTK_ARROW_BOTH); }
 
 
  vtkSetClampMacro(ArrowStyle, int, VTK_ARROW_FILLED, VTK_ARROW_HOLLOW);
  vtkGetMacro(ArrowStyle, int);
  void SetArrowStyleToFilled() { this->SetArrowStyle(VTK_ARROW_FILLED); }
  void SetArrowStyleToOpen() { this->SetArrowStyle(VTK_ARROW_OPEN); }
  void SetArrowStyleToHollow() { this->SetArrowStyle(VTK_ARROW_HOLLOW); }
 
 
  vtkSetClampMacro(ArrowLength, double, 0.0, 1.0);
  vtkGetMacro(ArrowLength, double);
  vtkSetClampMacro(ArrowWidth, double, 0.0, 1.0);
  vtkGetMacro(ArrowWidth, double);
 
 
  vtkSetClampMacro(MinimumArrowSize, double, 1.0, VTK_FLOAT_MAX);
  vtkGetMacro(MinimumArrowSize, double);
  vtkSetClampMacro(MaximumArrowSize, double, 1.0, VTK_FLOAT_MAX);
  vtkGetMacro(MaximumArrowSize, double);
 
 
  vtkSetMacro(AutoLabel, vtkTypeBool);
  vtkGetMacro(AutoLabel, vtkTypeBool);
  vtkBooleanMacro(AutoLabel, vtkTypeBool);
 
 
  vtkSetStringMacro(LabelFormat);
  vtkGetStringMacro(LabelFormat);
 
 
  vtkGetMacro(Length, double);
  vtkGetMacro(Angle, double);
 
 
  int RenderOverlay(vtkViewport* viewport) override;
  int RenderOpaqueGeometry(vtkViewport* viewport) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override { return 0; }
 
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
  void ReleaseGraphicsResources(vtkWindow*) override;
  void ShallowCopy(vtkProp* prop) override;
 
protected:
  vtkLeaderActor2D();
  ~vtkLeaderActor2D() override;
 
  // Internal helper methods
  virtual void BuildLeader(vtkViewport* viewport);
  int SetFontSize(vtkViewport* viewport, vtkTextMapper* textMapper, const int* targetSize,
    double factor, int* stringSize);
  int ClipLeader(
    double xL[3], int stringSize[2], double p1[3], double ray[3], double c1[3], double c2[3]);
  void BuildCurvedLeader(double p1[3], double p2[3], double ray[3], double rayLength, double theta,
    vtkViewport* viewport, int viewportChanged);
  int InStringBox(double center[3], int stringSize[2], double x[3]);
 
  // Characteristics of the leader
  double Radius;
  double Length;
  double Angle;
 
  vtkTypeBool AutoLabel;
  char* LabelFormat;
  char* Label;
  double LabelFactor;
  vtkTextMapper* LabelMapper;
  vtkActor2D* LabelActor;
  vtkTextProperty* LabelTextProperty;
 
  int ArrowPlacement;
  int ArrowStyle;
  double ArrowLength;
  double ArrowWidth;
  double MinimumArrowSize;
  double MaximumArrowSize;
 
  vtkPoints* LeaderPoints;
  vtkCellArray* LeaderLines;
  vtkCellArray* LeaderArrows;
  vtkPolyData* Leader;
  vtkPolyDataMapper2D* LeaderMapper;
  vtkActor2D* LeaderActor;
 
  // Internal ivars for tracking whether to rebuild
  int LastPosition[2];
  int LastPosition2[2];
  int LastSize[2];
  vtkTimeStamp BuildTime;
 
private:
  vtkLeaderActor2D(const vtkLeaderActor2D&) = delete;
  void operator=(const vtkLeaderActor2D&) = delete;
};
 
#endif