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

  Program:   Visualization Toolkit
  Module:    vtkGlobeSource.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 vtkGlobeSource_h
#define vtkGlobeSource_h

#include "vtkGeovisCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class vtkCellArray;
class vtkFloatArray;


class VTKGEOVISCORE_EXPORT vtkGlobeSource : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkGlobeSource,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);



  vtkSetVector3Macro(Origin, double);


  vtkSetClampMacro(StartLongitude,double,-180.0,180.0);
  vtkSetClampMacro(EndLongitude,double,-180.0,180.0);
  vtkSetClampMacro(StartLatitude,double,-90.0,90.0);
  vtkSetClampMacro(EndLatitude,double,-90.0,90.0);


  vtkSetClampMacro(LongitudeResolution,int,3,100);
  vtkGetMacro(LongitudeResolution,int);


  vtkSetClampMacro(LatitudeResolution,int,3,100);
  vtkGetMacro(LatitudeResolution,int);


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

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


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


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

  static vtkGlobeSource *New();


  static void ComputeGlobePoint(
    double theta, double phi, double radius, double* point, double* normal = 0);


  static void ComputeLatitudeLongitude(
    double* x, double& theta, double& phi);

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

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

  void AddPoint(
    double theta, double phi, double radius,
    vtkPoints* newPoints, vtkFloatArray* newNormals,
    vtkFloatArray* newLongitudeArray, vtkFloatArray* newLatitudeArray,
    vtkDoubleArray* newLatLongArray);


  double Origin[3];
  double Radius;

  bool   AutoCalculateCurtainHeight;
  double CurtainHeight;

  int LongitudeResolution;
  int LatitudeResolution;

  double StartLongitude;
  double EndLongitude;
  double StartLatitude;
  double EndLatitude;

  int QuadrilateralTessellation;

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

#endif