vtkSphere.h

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

  Program:   Visualization Toolkit
  Module:    vtkSphere.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 vtkSphere_h
#define vtkSphere_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkImplicitFunction.h"

class VTKCOMMONDATAMODEL_EXPORT vtkSphere : public vtkImplicitFunction
{
public:
  vtkTypeMacro(vtkSphere,vtkImplicitFunction);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkSphere *New();


  using vtkImplicitFunction::EvaluateFunction;
  double EvaluateFunction(double x[3]) override;

  void EvaluateGradient(double x[3], double n[3]) override;


  vtkSetMacro(Radius,double);
  vtkGetMacro(Radius,double);


  vtkSetVector3Macro(Center,double);
  vtkGetVectorMacro(Center,double,3);

  static double Evaluate(double center[3], double R, double x[3])
  {return (x[0]-center[0])*(x[0]-center[0]) +
      (x[1]-center[1])*(x[1]-center[1]) +
      (x[2]-center[2])*(x[2]-center[2]) - R*R;
  }


  static void ComputeBoundingSphere(float *pts, vtkIdType numPts, float sphere[4],
                                    vtkIdType hints[2]);
  static void ComputeBoundingSphere(double *pts, vtkIdType numPts, double sphere[4],
                                    vtkIdType hints[2]);


  static void ComputeBoundingSphere(float **spheres, vtkIdType numSpheres, float sphere[4],
                                    vtkIdType hints[2]);
  static void ComputeBoundingSphere(double **spheres, vtkIdType numSpheres, double sphere[4],
                                    vtkIdType hints[2]);

protected:
  vtkSphere();
  ~vtkSphere() override {}

  double Radius;
  double Center[3];

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

#endif