vtkAxisActor2D.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkAxisActor2D.h,v $

  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 __vtkAxisActor2D_h
#define __vtkAxisActor2D_h

#include "vtkActor2D.h"

class vtkPolyDataMapper2D;
class vtkPolyData;
class vtkTextMapper;
class vtkTextProperty;

#define VTK_MAX_LABELS 25

class VTK_RENDERING_EXPORT vtkAxisActor2D : public vtkActor2D
{
public:
  vtkTypeRevisionMacro(vtkAxisActor2D,vtkActor2D);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkAxisActor2D *New();


  virtual vtkCoordinate *GetPoint1Coordinate() 
    { return this->GetPositionCoordinate(); };
  virtual void SetPoint1(double x[2]) { this->SetPosition(x); };
  virtual void SetPoint1(double x, double y) { this->SetPosition(x,y); };
  virtual double *GetPoint1() { return this->GetPosition(); };


  virtual vtkCoordinate *GetPoint2Coordinate() 
    { return this->GetPosition2Coordinate(); };
  virtual void SetPoint2(double x[2]) { this->SetPosition2(x); };
  virtual void SetPoint2(double x, double y) { this->SetPosition2(x,y); };
  virtual double *GetPoint2() { return this->GetPosition2(); };


  vtkSetVector2Macro(Range,double);
  vtkGetVectorMacro(Range,double,2);


  vtkSetClampMacro(NumberOfLabels, int, 2, VTK_MAX_LABELS);
  vtkGetMacro(NumberOfLabels, int);
  

  vtkSetStringMacro(LabelFormat);
  vtkGetStringMacro(LabelFormat);


  vtkSetMacro(AdjustLabels, int);
  vtkGetMacro(AdjustLabels, int);
  vtkBooleanMacro(AdjustLabels, int);
  virtual double *GetAdjustedRange()
    { 
      this->UpdateAdjustedRange();
      return this->AdjustedRange; 
    }
  virtual void GetAdjustedRange(double &_arg1, double &_arg2)
    { 
      this->UpdateAdjustedRange();
      _arg1 = this->AdjustedRange[0];
      _arg2 = this->AdjustedRange[1];
    }; 
  virtual void GetAdjustedRange(double _arg[2]) 
    { 
      this->GetAdjustedRange(_arg[0], _arg[1]);
    } 
  virtual int GetAdjustedNumberOfLabels()
    {
      this->UpdateAdjustedRange();
      return this->AdjustedNumberOfLabels; 
    }


  vtkSetStringMacro(Title);
  vtkGetStringMacro(Title);


  virtual void SetTitleTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(TitleTextProperty,vtkTextProperty);
  

  virtual void SetLabelTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(LabelTextProperty,vtkTextProperty);
      

  vtkSetClampMacro(TickLength, int, 0, 100);
  vtkGetMacro(TickLength, int);
  

  vtkSetClampMacro(TickOffset, int, 0, 100);
  vtkGetMacro(TickOffset, int);
  

  vtkSetMacro(AxisVisibility, int);
  vtkGetMacro(AxisVisibility, int);
  vtkBooleanMacro(AxisVisibility, int);


  vtkSetMacro(TickVisibility, int);
  vtkGetMacro(TickVisibility, int);
  vtkBooleanMacro(TickVisibility, int);


  vtkSetMacro(LabelVisibility, int);
  vtkGetMacro(LabelVisibility, int);
  vtkBooleanMacro(LabelVisibility, int);


  vtkSetMacro(TitleVisibility, int);
  vtkGetMacro(TitleVisibility, int);
  vtkBooleanMacro(TitleVisibility, int);


  vtkSetClampMacro(FontFactor, double, 0.1, 2.0);
  vtkGetMacro(FontFactor, double);


  vtkSetClampMacro(LabelFactor, double, 0.1, 2.0);
  vtkGetMacro(LabelFactor, double);


  int RenderOverlay(vtkViewport* viewport);
  int RenderOpaqueGeometry(vtkViewport* viewport);
  int RenderTranslucentGeometry(vtkViewport *) {return 0;}

  void ReleaseGraphicsResources(vtkWindow *);


  static void ComputeRange(double inRange[2], 
                           double outRange[2],
                           int inNumTicks, 
                           int &outNumTicks, 
                           double &interval);


  static int SetFontSize(vtkViewport *viewport, 
                         vtkTextMapper *textMapper, 
                         int *targetSize, 
                         double factor, 
                         int *stringSize);
  static int SetMultipleFontSize(vtkViewport *viewport, 
                                 vtkTextMapper **textMappers, 
                                 int nbOfMappers, 
                                 int *targetSize,
                                 double factor, 
                                 int *stringSize);

  void ShallowCopy(vtkProp *prop);

protected:
  vtkAxisActor2D();
  ~vtkAxisActor2D();

  vtkTextProperty *TitleTextProperty;
  vtkTextProperty *LabelTextProperty;

  char  *Title;
  double Range[2];
  int   NumberOfLabels;
  char  *LabelFormat;
  int   AdjustLabels;
  double FontFactor;
  double LabelFactor;
  int   TickLength;
  int   TickOffset;

  double AdjustedRange[2];
  int   AdjustedNumberOfLabels;
  int   NumberOfLabelsBuilt;

  int   AxisVisibility;
  int   TickVisibility;
  int   LabelVisibility;
  int   TitleVisibility;
  
  int   LastPosition[2];
  int   LastPosition2[2];
  
  int   LastSize[2];
  int   LastMaxLabelSize[2];
  
  virtual void BuildAxis(vtkViewport *viewport);
  static double ComputeStringOffset(double width, double height, double theta);
  static void SetOffsetPosition(double xTick[3], double theta, 
                                int stringHeight, int stringWidth, 
                                int offset, vtkActor2D *actor);
  virtual void UpdateAdjustedRange();
  
  vtkTextMapper *TitleMapper;
  vtkActor2D    *TitleActor;

  vtkTextMapper **LabelMappers;
  vtkActor2D    **LabelActors;

  vtkPolyData         *Axis;
  vtkPolyDataMapper2D *AxisMapper;
  vtkActor2D          *AxisActor;

  vtkTimeStamp  AdjustedRangeBuildTime;
  vtkTimeStamp  BuildTime;

private:
  vtkAxisActor2D(const vtkAxisActor2D&);  // Not implemented.
  void operator=(const vtkAxisActor2D&);  // Not implemented.
};


#endif

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