vtkLabelPlacementMapper.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkLabelPlacementMapper.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkLabelPlacementMapper_h
#define vtkLabelPlacementMapper_h

#include "vtkRenderingLabelModule.h" // For export macro
#include "vtkMapper2D.h"

class vtkCoordinate;
class vtkLabelRenderStrategy;
class vtkSelectVisiblePoints;

class VTKRENDERINGLABEL_EXPORT vtkLabelPlacementMapper : public vtkMapper2D
{
public:
  static vtkLabelPlacementMapper *New();
  vtkTypeMacro(vtkLabelPlacementMapper, vtkMapper2D);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void RenderOverlay(vtkViewport *viewport, vtkActor2D *actor) override;


  virtual void SetRenderStrategy(vtkLabelRenderStrategy* s);
  vtkGetObjectMacro(RenderStrategy, vtkLabelRenderStrategy);


  vtkSetClampMacro(MaximumLabelFraction,double,0.,1.);
  vtkGetMacro(MaximumLabelFraction,double);


  vtkSetMacro(IteratorType,int);
  vtkGetMacro(IteratorType,int);


  vtkSetMacro(UseUnicodeStrings,bool);
  vtkGetMacro(UseUnicodeStrings,bool);
  vtkBooleanMacro(UseUnicodeStrings,bool);


  vtkGetMacro(PositionsAsNormals,bool);
  vtkSetMacro(PositionsAsNormals,bool);
  vtkBooleanMacro(PositionsAsNormals,bool);


  vtkGetMacro(GeneratePerturbedLabelSpokes,bool);
  vtkSetMacro(GeneratePerturbedLabelSpokes,bool);
  vtkBooleanMacro(GeneratePerturbedLabelSpokes,bool);


  vtkGetMacro(UseDepthBuffer,bool);
  vtkSetMacro(UseDepthBuffer,bool);
  vtkBooleanMacro(UseDepthBuffer,bool);


  vtkSetMacro(PlaceAllLabels, bool);
  vtkGetMacro(PlaceAllLabels, bool);
  vtkBooleanMacro(PlaceAllLabels, bool);


  vtkSetMacro(OutputTraversedBounds, bool);
  vtkGetMacro(OutputTraversedBounds, bool);
  vtkBooleanMacro(OutputTraversedBounds, bool);

  enum LabelShape {
    NONE,
    RECT,
    ROUNDED_RECT,
    NUMBER_OF_LABEL_SHAPES
  };


  vtkSetClampMacro(Shape, int, 0, NUMBER_OF_LABEL_SHAPES-1);
  vtkGetMacro(Shape, int);
  virtual void SetShapeToNone()
    { this->SetShape(NONE); }
  virtual void SetShapeToRect()
    { this->SetShape(RECT); }
  virtual void SetShapeToRoundedRect()
    { this->SetShape(ROUNDED_RECT); }

  enum LabelStyle {
    FILLED,
    OUTLINE,
    NUMBER_OF_LABEL_STYLES
  };


  vtkSetClampMacro(Style, int, 0, NUMBER_OF_LABEL_STYLES-1);
  vtkGetMacro(Style, int);
  virtual void SetStyleToFilled()
    { this->SetStyle(FILLED); }
  virtual void SetStyleToOutline()
    { this->SetStyle(OUTLINE); }


  vtkSetMacro(Margin, double);
  vtkGetMacro(Margin, double);


  vtkSetVector3Macro(BackgroundColor, double);
  vtkGetVector3Macro(BackgroundColor, double);


  vtkSetClampMacro(BackgroundOpacity, double, 0.0, 1.0);
  vtkGetMacro(BackgroundOpacity, double);


  vtkGetObjectMacro(AnchorTransform,vtkCoordinate);

  void ReleaseGraphicsResources(vtkWindow *) override;

protected:
  vtkLabelPlacementMapper();
  ~vtkLabelPlacementMapper() override;

  virtual void SetAnchorTransform( vtkCoordinate* );

  int FillInputPortInformation( int port, vtkInformation* info ) override;

  class Internal;
  Internal* Buckets;

  vtkLabelRenderStrategy* RenderStrategy;
  vtkCoordinate* AnchorTransform;
  vtkSelectVisiblePoints* VisiblePoints;
  double MaximumLabelFraction;
  bool PositionsAsNormals;
  bool GeneratePerturbedLabelSpokes;
  bool UseDepthBuffer;
  bool UseUnicodeStrings;
  bool PlaceAllLabels;
  bool OutputTraversedBounds;

  int LastRendererSize[2];
  double LastCameraPosition[3];
  double LastCameraFocalPoint[3];
  double LastCameraViewUp[3];
  double LastCameraParallelScale;
  int IteratorType;

  int Style;
  int Shape;
  double Margin;
  double BackgroundOpacity;
  double BackgroundColor[3];

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

#endif