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111 lines
3.8 KiB
C++
111 lines
3.8 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkGeoSphereTransform.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 vtkGeoSphereTransform
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* @brief A transformation between long-lat-alt and rect coords
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*
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* the cartesian coordinate system is the following (if BaseAltitude is 0),
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* - the origin is at the center of the earth
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* - the x axis goes from the origin to (longtitude=-90,latitude=0), intersection of equator and the meridian passing just east of Galapagos Islands
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* - the y axis goes from the origin to the intersection of Greenwitch meridian and equator (longitude=0,latitude=0)
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* - the z axis goes from the origin to the Geographic North Pole (latitude=90)
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* - therefore the frame is right-handed.
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*/
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#ifndef vtkGeoSphereTransform_h
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#define vtkGeoSphereTransform_h
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#include "vtkGeovisCoreModule.h" // For export macro
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#include "vtkAbstractTransform.h"
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class vtkGeoProjection;
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class VTKGEOVISCORE_EXPORT vtkGeoSphereTransform : public vtkAbstractTransform
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{
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public:
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static vtkGeoSphereTransform* New();
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virtual void PrintSelf( ostream& os, vtkIndent indent );
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vtkTypeMacro(vtkGeoSphereTransform,vtkAbstractTransform);
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/**
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* Invert the transformation.
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*/
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virtual void Inverse();
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//@{
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/**
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* This will calculate the transformation without calling Update.
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* Meant for use only within other VTK classes.
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*/
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virtual void InternalTransformPoint( const float in[3], float out[3] );
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virtual void InternalTransformPoint( const double in[3], double out[3] );
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//@}
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//@{
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/**
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* This will transform a point and, at the same time, calculate a
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* 3x3 Jacobian matrix that provides the partial derivatives of the
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* transformation at that point. This method does not call Update.
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* Meant for use only within other VTK classes.
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*/
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virtual void InternalTransformDerivative( const float in[3], float out[3], float derivative[3][3] );
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virtual void InternalTransformDerivative( const double in[3], double out[3], double derivative[3][3] );
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//@}
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/**
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* Make another transform of the same type.
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*/
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virtual vtkAbstractTransform* MakeTransform();
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//@{
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/**
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* If on, this transform converts (long,lat,alt) triples to (x,y,z) as an offset
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* from the center of the earth. Alt, x, y, and z are all be in meters.
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* If off, the transform works in the reverse direction.
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* Initial value is on.
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*/
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vtkSetMacro(ToRectangular, bool);
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vtkGetMacro(ToRectangular, bool);
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vtkBooleanMacro(ToRectangular, bool);
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//@}
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//@{
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/**
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* The base altitude to transform coordinates to. This can be useful for transforming
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* lines just above the earth's surface. Default is 0.
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*/
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vtkSetMacro(BaseAltitude, double);
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vtkGetMacro(BaseAltitude, double);
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//@}
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protected:
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vtkGeoSphereTransform();
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virtual ~vtkGeoSphereTransform();
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bool ToRectangular;
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double BaseAltitude;
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private:
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vtkGeoSphereTransform( const vtkGeoSphereTransform& ) VTK_DELETE_FUNCTION;
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void operator = ( const vtkGeoSphereTransform& ) VTK_DELETE_FUNCTION;
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};
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#endif // vtkGeoSphereTransform_h
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