vtkEllipticalButtonSource.h

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

  Program:   Visualization Toolkit
  Module:    vtkEllipticalButtonSource.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 __vtkEllipticalButtonSource_h
#define __vtkEllipticalButtonSource_h

#include "vtkFiltersSourcesModule.h" // For export macro
#include "vtkButtonSource.h"

class vtkCellArray;
class vtkFloatArray;
class vtkPoints;

class VTKFILTERSSOURCES_EXPORT vtkEllipticalButtonSource : public vtkButtonSource
{
public:
  void PrintSelf(ostream& os, vtkIndent indent);
  vtkTypeMacro(vtkEllipticalButtonSource,vtkButtonSource);

  static vtkEllipticalButtonSource *New();


  vtkSetClampMacro(Width,double,0.0,VTK_DOUBLE_MAX);
  vtkGetMacro(Width,double);


  vtkSetClampMacro(Height,double,0.0,VTK_DOUBLE_MAX);
  vtkGetMacro(Height,double);


  vtkSetClampMacro(Depth,double,0.0,VTK_DOUBLE_MAX);
  vtkGetMacro(Depth,double);


  vtkSetClampMacro(CircumferentialResolution,int,4,VTK_LARGE_INTEGER);
  vtkGetMacro(CircumferentialResolution,int);


  vtkSetClampMacro(TextureResolution,int,1,VTK_LARGE_INTEGER);
  vtkGetMacro(TextureResolution,int);


  vtkSetClampMacro(ShoulderResolution,int,1,VTK_LARGE_INTEGER);
  vtkGetMacro(ShoulderResolution,int);


  vtkSetClampMacro(RadialRatio,double,1.0,VTK_DOUBLE_MAX);
  vtkGetMacro(RadialRatio,double);

protected:
  vtkEllipticalButtonSource();
  ~vtkEllipticalButtonSource() {}

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);

  double Width;
  double Height;
  double Depth;
  int   CircumferentialResolution;
  int   TextureResolution;
  int   ShoulderResolution;
  double RadialRatio;

private:
  //internal variable related to axes of ellipsoid
  double A;
  double A2;
  double B;
  double B2;
  double C;
  double C2;

  double ComputeDepth(int inTextureRegion, double x, double y, double n[3]);
  void InterpolateCurve(int inTextureRegion, vtkPoints *newPts, int numPts,
                        vtkFloatArray *normals, vtkFloatArray *tcoords,
                        int res, int c1StartPoint,int c1Incr,
                        int c2StartPoint,int s2Incr, int startPoint,int incr);
  void CreatePolygons(vtkCellArray *newPolys, int num, int res, int startIdx);
  void IntersectEllipseWithLine(double a2, double b2, double dX, double dY,
                                double& xe, double& ye);

  vtkEllipticalButtonSource(const vtkEllipticalButtonSource&);  // Not implemented.
  void operator=(const vtkEllipticalButtonSource&);  // Not implemented.
};

#endif