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69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkGeoMath.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/*-------------------------------------------------------------------------
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Copyright 2008 Sandia Corporation.
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Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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the U.S. Government retains certain rights in this software.
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-------------------------------------------------------------------------*/
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/**
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* @class vtkGeoMath
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* @brief Useful geographic calculations
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*
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*
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* vtkGeoMath provides some useful geographic calculations.
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*/
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#ifndef vtkGeoMath_h
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#define vtkGeoMath_h
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#include "vtkInfovisLayoutModule.h" // For export macro
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#include "vtkObject.h"
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class VTKINFOVISLAYOUT_EXPORT vtkGeoMath : public vtkObject
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{
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public:
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static vtkGeoMath *New();
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vtkTypeMacro(vtkGeoMath, vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent);
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/**
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* Returns the average radius of the earth in meters.
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*/
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static double EarthRadiusMeters() {return 6356750.0;}
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/**
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* Returns the squared distance between two points.
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*/
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static double DistanceSquared(double pt0[3], double pt1[3]);
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/**
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* Converts a (longitude, latitude, altitude) triple to
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* world coordinates where the center of the earth is at the origin.
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* Units are in meters.
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* Note that having altitude realtive to sea level causes issues.
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*/
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static void LongLatAltToRect(double lla[3], double rect[3]);
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protected:
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vtkGeoMath();
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~vtkGeoMath();
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private:
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vtkGeoMath(const vtkGeoMath&) VTK_DELETE_FUNCTION;
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void operator=(const vtkGeoMath&) VTK_DELETE_FUNCTION;
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};
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#endif
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