strtree/Interval.h
/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2006 Refractions Research 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.
*
**********************************************************************/
#pragma once
#include <geos/export.h>
#include <algorithm>
#include <cassert>
#include <cmath>
namespace geos {
namespace index { // geos::index
namespace strtree { // geos::index::strtree
//
class GEOS_DLL Interval {
public:
Interval(double newMin, double newMax) : imin(newMin), imax(newMax) {
assert(std::isnan(newMin) || std::isnan(newMax) || imin <= imax);
}
double getMin() const { return imin; }
double getMax() const { return imax; }
double getWidth() const { return imax - imin; }
double getCentre() const { return (imin + imax) / 2; }
Interval* expandToInclude(const Interval* other) {
imax = std::max(imax, other->imax);
imin = std::min(imin, other->imin);
return this;
}
bool intersects(const Interval* other) const {
return !(other->imin > imax || other->imax < imin);
}
bool equals(const Interval* other) const {
return imin == other->imin && imax == other->imax;
}
private:
double imin;
double imax;
};
} // namespace geos::index::strtree
} // namespace geos::index
} // namespace geos
geos::index::strtree
Contains 2-D and 1-D versions of the Sort-Tile-Recursive (STR) tree, a query-only R-tree.
Definition AbstractNode.h:31
geos::index
Provides classes for various kinds of spatial indexes.
Definition CleanCoverage.h:39
geos
Basic namespace for all GEOS functionalities.
Definition geos.h:38