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

  Program:   Visualization Toolkit
  Module:    vtkTexturedSphereSource.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.

=========================================================================*/
/**
 * @class   vtkTexturedSphereSource
 * @brief   create a sphere centered at the origin
 *
 * vtkTexturedSphereSource creates a polygonal sphere of specified radius
 * centered at the origin. The resolution (polygonal discretization) in both
 * the latitude (phi) and longitude (theta) directions can be specified.
 * It also is possible to create partial sphere by specifying maximum phi and
 * theta angles.
*/

#ifndef vtkTexturedSphereSource_h
#define vtkTexturedSphereSource_h

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

#define VTK_MAX_SPHERE_RESOLUTION 1024

class VTKFILTERSSOURCES_EXPORT vtkTexturedSphereSource : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkTexturedSphereSource,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  /**
   * Construct sphere with radius=0.5 and default resolution 8 in both Phi
   * and Theta directions.
   */
  static vtkTexturedSphereSource *New();

  //@{
  /**
   * Set radius of sphere.
   */
  vtkSetClampMacro(Radius,double,0.0,VTK_DOUBLE_MAX);
  vtkGetMacro(Radius,double);
  //@}

  //@{
  /**
   * Set the number of points in the longitude direction.
   */
  vtkSetClampMacro(ThetaResolution,int,4,VTK_MAX_SPHERE_RESOLUTION);
  vtkGetMacro(ThetaResolution,int);
  //@}

  //@{
  /**
   * Set the number of points in the latitude direction.
   */
  vtkSetClampMacro(PhiResolution,int,4,VTK_MAX_SPHERE_RESOLUTION);
  vtkGetMacro(PhiResolution,int);
  //@}

  //@{
  /**
   * Set the maximum longitude angle.
   */
  vtkSetClampMacro(Theta,double,0.0,360.0);
  vtkGetMacro(Theta,double);
  //@}

  //@{
  /**
   * Set the maximum latitude angle (0 is at north pole).
   */
  vtkSetClampMacro(Phi,double,0.0,180.0);
  vtkGetMacro(Phi,double);
  //@}

  //@{
  /**
   * Set/get the desired precision for the output points.
   * vtkAlgorithm::SINGLE_PRECISION - Output single-precision floating point.
   * vtkAlgorithm::DOUBLE_PRECISION - Output double-precision floating point.
   */
  vtkSetMacro(OutputPointsPrecision,int);
  vtkGetMacro(OutputPointsPrecision,int);
  //@}

protected:
  vtkTexturedSphereSource(int res=8);
  ~vtkTexturedSphereSource() override {}

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;
  double Radius;
  double Theta;
  double Phi;
  int ThetaResolution;
  int PhiResolution;
  int OutputPointsPrecision;

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

#endif
