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/**********************************************************************
* $Id: ElevationMatrixCell.cpp,v 1.3 2004/11/29 16:05:33 strk Exp $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2001-2002 Vivid Solutions Inc.
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************/
#include <sstream>
#include <geos/geom.h>
#include <geos/opOverlay.h>
namespace geos
{
ElevationMatrixCell::ElevationMatrixCell(): ztot(0)
{
}
ElevationMatrixCell::~ElevationMatrixCell()
{
}
void
ElevationMatrixCell::add(const Coordinate &c)
{
if ( !ISNAN(c.z) )
{
if ( zvals.insert(c.z).second )
{
ztot+=c.z;
}
}
}
void
ElevationMatrixCell::add(double z)
{
if ( !ISNAN(z) )
{
if ( zvals.insert(z).second )
{
ztot+=z;
}
}
}
double
ElevationMatrixCell::getTotal() const
{
return ztot;
}
double
ElevationMatrixCell::getAvg() const
{
if ( ! zvals.size() ) return DoubleNotANumber;
return (ztot/zvals.size());
}
string
ElevationMatrixCell::print() const
{
ostringstream ret;
//ret<<"["<<ztot<<"/"<<zvals.size()<<"]";
ret<<"["<<ztot/zvals.size()<<"]";
return ret.str();
}
} // namespace geos;
/**********************************************************************
* $Log: ElevationMatrixCell.cpp,v $
* Revision 1.3 2004/11/29 16:05:33 strk
* Fixed a bug in LineIntersector::interpolateZ causing NaN values
* to come out.
* Handled dimensional collapses in ElevationMatrix.
* Added ISNAN macro and changed ISNAN/FINITE macros to avoid
* dispendious isnan() and finite() calls.
*
* Revision 1.2 2004/11/26 09:22:50 strk
* Added FINITE(x) macro and its use.
* Made input geoms average Z computation optional in OverlayOp.
*
* Revision 1.1 2004/11/23 16:22:49 strk
* Added ElevationMatrix class and components to do post-processing draping of overlayed geometries.
*
**********************************************************************/
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