source: branches/vtkvis_threaded/vtkRpCubeAxesActor2D.h @ 2524

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

  Program:   Visualization Toolkit
  Module:    vtkRpCubeAxesActor2D.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.

=========================================================================*/
// .NAME vtkRpCubeAxesActor2D - create a 2D plot of a bounding box edges - used for navigation
// .SECTION Description
// vtkCubeAxesActor2D is a composite actor that draws three axes of the 
// bounding box of an input dataset. The axes include labels and titles
// for the x-y-z axes. The algorithm selects the axes that are on the 
// "exterior" of the bounding box, exterior as determined from examining
// outer edges of the bounding box in projection (display) space. Alternatively,
// the edges closest to the viewer (i.e., camera position) can be drawn.
// 
// To use this object you must define a bounding box and the camera used
// to render the vtkCubeAxesActor2D. The camera is used to control the 
// scaling and position of the vtkCubeAxesActor2D so that it fits in the
// viewport and always remains visible.)
//
// The font property of the axes titles and labels can be modified through the
// AxisTitleTextProperty and AxisLabelTextProperty attributes. You may also
// use the GetXAxisActor2D, GetYAxisActor2D or GetZAxisActor2D methods 
// to access each individual axis actor to modify their font properties.
//
// The bounding box to use is defined in one of three ways. First, if the Input
// ivar is defined, then the input dataset's bounds is used. If the Input is 
// not defined, and the Prop (superclass of all actors) is defined, then the
// Prop's bounds is used. If neither the Input or Prop is defined, then the
// Bounds instance variable (an array of six doubles) is used.
// 
// .SECTION See Also
// vtkActor2D vtkAxisActor2D vtkXYPlotActor vtkTextProperty

#ifndef __vtkRpCubeAxesActor2D_h
#define __vtkRpCubeAxesActor2D_h

#include "vtkActor2D.h"

#define VTK_FLY_OUTER_EDGES 0
#define VTK_FLY_CLOSEST_TRIAD 1
#define VTK_FLY_NONE 2

class vtkAxisActor2D;
class vtkCamera;
class vtkDataSet;
class vtkTextProperty;

class VTK_HYBRID_EXPORT vtkRpCubeAxesActor2D : public vtkActor2D
{
public:
  vtkTypeMacro(vtkRpCubeAxesActor2D,vtkActor2D);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Instantiate object with bold, italic, and shadow enabled; font family
  // set to Arial; and label format "6.3g". The number of labels per axis
  // is set to 3.
  static vtkRpCubeAxesActor2D *New();
  
  // Description:
  // Draw the axes as per the vtkProp superclass' API.
  int RenderOverlay(vtkViewport*);
  int RenderOpaqueGeometry(vtkViewport*);
  virtual int RenderTranslucentPolygonalGeometry(vtkViewport *) {return 0;}

  // Description:
  // Does this prop have some translucent polygonal geometry?
  virtual int HasTranslucentPolygonalGeometry();
  
  // Description:
  // Use the bounding box of this input dataset to draw the cube axes. If this
  // is not specified, then the class will attempt to determine the bounds from
  // the defined Prop or Bounds.
  virtual void SetInput(vtkDataSet*);
  vtkGetObjectMacro(Input, vtkDataSet);

  // Description:
  // Use the bounding box of this prop to draw the cube axes. The
  // ViewProp is used to determine the bounds only if the Input is not
  // defined.
  void SetViewProp(vtkProp* prop);
  vtkGetObjectMacro(ViewProp, vtkProp);

  // Description:
  // Explicitly specify the region in space around which to draw the bounds.
  // The bounds is used only when no Input or Prop is specified. The bounds
  // are specified according to (xmin,xmax, ymin,ymax, zmin,zmax), making
  // sure that the min's are less than the max's.
  vtkSetVector6Macro(Bounds,double);
  double *GetBounds();
  void GetBounds(double& xmin, double& xmax, double& ymin, double& ymax, 
                 double& zmin, double& zmax);
  void GetBounds(double bounds[6]);

  // Description:
  // Explicitly specify the range of values used on the bounds.
  // The ranges are specified according to (xmin,xmax, ymin,ymax, zmin,zmax), 
  // making sure that the min's are less than the max's.
  vtkSetVector6Macro(Ranges,double);
  double *GetRanges();
  void GetRanges(double& xmin, double& xmax, double& ymin, double& ymax, 
                 double& zmin, double& zmax);
  void GetRanges(double ranges[6]);  

  // Description:
  // Explicitly specify an origin for the axes. These usually intersect at one of the
  // corners of the bounding box, however users have the option to override this if
  // necessary
  vtkSetMacro( XOrigin, double );
  vtkSetMacro( YOrigin, double );
  vtkSetMacro( ZOrigin, double );

  // Description:
  // Set/Get a flag that controls whether the axes use the data ranges
  // or the ranges set by SetRanges. By default the axes use the data
  // ranges.
  vtkSetMacro(UseRanges,int);
  vtkGetMacro(UseRanges,int);
  vtkBooleanMacro(UseRanges,int);

  // Description:
  // Set/Get the camera to perform scaling and translation of the 
  // vtkRpCubeAxesActor2D.
  virtual void SetCamera(vtkCamera*);
  vtkGetObjectMacro(Camera,vtkCamera);

  // Description:
  // Specify a mode to control how the axes are drawn: either outer edges
  // or closest triad to the camera position, or you may also disable flying 
  // of the axes.
  vtkSetClampMacro(FlyMode, int, VTK_FLY_OUTER_EDGES, VTK_FLY_NONE);
  vtkGetMacro(FlyMode, int);
  void SetFlyModeToOuterEdges()
    {this->SetFlyMode(VTK_FLY_OUTER_EDGES);};
  void SetFlyModeToClosestTriad()
    {this->SetFlyMode(VTK_FLY_CLOSEST_TRIAD);};
  void SetFlyModeToNone()
    {this->SetFlyMode(VTK_FLY_NONE);};

  // Description:
  // Set/Get a flag that controls whether the axes are scaled to fit in
  // the viewport. If off, the axes size remains constant (i.e., stay the
  // size of the bounding box). By default scaling is on so the axes are
  // scaled to fit inside the viewport.
  vtkSetMacro(Scaling,int);
  vtkGetMacro(Scaling,int);
  vtkBooleanMacro(Scaling,int);

  // Description:
  // Set/Get the number of annotation labels to show along the x, y, and 
  // z axes. This values is a suggestion: the number of labels may vary
  // depending on the particulars of the data.
  vtkSetClampMacro(NumberOfLabels, int, 0, 50);
  vtkGetMacro(NumberOfLabels, int);
  
  // Description:
  // Set/Get the labels for the x, y, and z axes. By default, 
  // use "X", "Y" and "Z".
  vtkSetStringMacro(XLabel);
  vtkGetStringMacro(XLabel);
  vtkSetStringMacro(YLabel);
  vtkGetStringMacro(YLabel);
  vtkSetStringMacro(ZLabel);
  vtkGetStringMacro(ZLabel);

  // Description:
  // Retrieve handles to the X, Y and Z axis (so that you can set their text
  // properties for example)
  vtkAxisActor2D *GetXAxisActor2D()
    {return this->XAxis;}
  vtkAxisActor2D *GetYAxisActor2D()
    {return this->YAxis;}
  vtkAxisActor2D *GetZAxisActor2D()
    {return this->ZAxis;}

  // Description:
  // Set/Get the title text property of all axes. Note that each axis can
  // be controlled individually through the GetX/Y/ZAxisActor2D() methods.
  virtual void SetAxisTitleTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(AxisTitleTextProperty,vtkTextProperty);
  
  // Description:
  // Set/Get the labels text property of all axes. Note that each axis can
  // be controlled individually through the GetX/Y/ZAxisActor2D() methods.
  virtual void SetAxisLabelTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(AxisLabelTextProperty,vtkTextProperty);
      
  // Description:
  // Set/Get the format with which to print the labels on each of the
  // x-y-z axes.
  vtkSetStringMacro(LabelFormat);
  vtkGetStringMacro(LabelFormat);
  
  // Description:
  // Set/Get the factor that controls the overall size of the fonts used
  // to label and title the axes. 
  vtkSetClampMacro(FontFactor, double, 0.1, 2.0);
  vtkGetMacro(FontFactor, double);

  // Description:
  // Set/Get the inertial factor that controls how often (i.e, how
  // many renders) the axes can switch position (jump from one axes 
  // to another).
  vtkSetClampMacro(Inertia, int, 1, VTK_LARGE_INTEGER);
  vtkGetMacro(Inertia, int);
  
  // Description:
  // Set/Get the variable that controls whether the actual
  // bounds of the dataset are always shown. Setting this variable
  // to 1 means that clipping is disabled and that the actual
  // value of the bounds is displayed even with corner offsets
  // Setting this variable to 0 means these axis will clip
  // themselves and show variable bounds (legacy mode)
  vtkSetClampMacro(ShowActualBounds, int, 0, 1);
  vtkGetMacro(ShowActualBounds, int);

  // Description:
  // Specify an offset value to "pull back" the axes from the corner at
  // which they are joined to avoid overlap of axes labels. The 
  // "CornerOffset" is the fraction of the axis length to pull back.
  vtkSetMacro(CornerOffset, double);
  vtkGetMacro(CornerOffset, double);

  // Description:
  // Release any graphics resources that are being consumed by this actor.
  // The parameter window could be used to determine which graphic
  // resources to release.
  void ReleaseGraphicsResources(vtkWindow *);

  // Description:
  // Turn on and off the visibility of each axis.
  vtkSetMacro(XAxisVisibility,int);
  vtkGetMacro(XAxisVisibility,int);
  vtkBooleanMacro(XAxisVisibility,int);
  vtkSetMacro(YAxisVisibility,int);
  vtkGetMacro(YAxisVisibility,int);
  vtkBooleanMacro(YAxisVisibility,int);
  vtkSetMacro(ZAxisVisibility,int);
  vtkGetMacro(ZAxisVisibility,int);
  vtkBooleanMacro(ZAxisVisibility,int);

  // Description:
  // Shallow copy of a CubeAxesActor2D.
  void ShallowCopy(vtkRpCubeAxesActor2D *actor);

protected:
  vtkRpCubeAxesActor2D();
  ~vtkRpCubeAxesActor2D();

  vtkDataSet *Input;    //Define bounds from input data, or
  vtkProp    *ViewProp;     //Define bounds from actor/assembly, or
  double      Bounds[6]; //Define bounds explicitly
  double      Ranges[6]; //Define ranges explicitly
  int        UseRanges; //Flag to use ranges or not

  vtkCamera *Camera;
  int FlyMode;
  int Scaling;
  
  vtkAxisActor2D *XAxis;
  vtkAxisActor2D *YAxis;
  vtkAxisActor2D *ZAxis;
  
  vtkTextProperty *AxisTitleTextProperty;
  vtkTextProperty *AxisLabelTextProperty;

  vtkTimeStamp  BuildTime;

  int   NumberOfLabels;
  char *XLabel;
  char *YLabel;
  char *ZLabel;
  char *Labels[3];

  int XAxisVisibility;
  int YAxisVisibility;
  int ZAxisVisibility;

  char  *LabelFormat;
  double FontFactor;
  double CornerOffset;
  int   Inertia;
  int   RenderCount;
  int   InertiaAxes[8];
  
  int RenderSomething;
  
  // Always show the actual bounds of the object
  int ShowActualBounds;

  double XOrigin;
  double YOrigin;
  double ZOrigin;
  
  // various helper methods
  void TransformBounds(vtkViewport *viewport, double bounds[6], 
                       double pts[8][3]);
  int ClipBounds(vtkViewport *viewport, double pts[8][3], double bounds[6]);
  double EvaluatePoint(double planes[24], double x[3]);
  double EvaluateBounds(double planes[24], double bounds[6]);
  void AdjustAxes(double pts[8][3], double bounds[6], 
                  int idx, int xIdx, int yIdx, int zIdx, int zIdx2, 
                  int xAxes, int yAxes, int zAxes,
                  double xCoords[4], double yCoords[4], double zCoords[4],
                  double xRange[2], double yRange[2], double zRange[2]);

private:
  // hide the superclass' ShallowCopy() from the user and the compiler.
  void ShallowCopy(vtkProp *prop) { this->vtkProp::ShallowCopy( prop ); };
private:
  vtkRpCubeAxesActor2D(const vtkRpCubeAxesActor2D&);  // Not implemented.
  void operator=(const vtkRpCubeAxesActor2D&);  // Not implemented.
};


#endif