src/index/strtree/Interval.cpp

   1 /**********************************************************************
   2  *
   3  * GEOS - Geometry Engine Open Source
   4  * http://geos.osgeo.org
   5  *
   6  * Copyright (C) 2006 Refractions Research Inc.
   7  * Copyright (C) 2001-2002 Vivid Solutions Inc.
   8  *
   9  * This is free software; you can redistribute and/or modify it under
  10  * the terms of the GNU Lesser General Public Licence as published
  11  * by the Free Software Foundation.
  12  * See the COPYING file for more information.
  13  *
  14  **********************************************************************/
  15
  16 #include <geos/index/strtree/Interval.h>
  17 //#include <geos/util.h>
  18
  19 #include <algorithm>
  20 #include <typeinfo>
  21 #include <cassert>
  22
  23 using namespace std;
  24
  25 namespace geos {
  26 namespace index { // geos.index
  27 namespace strtree { // geos.index.strtree
  28
  29 Interval::Interval(double newMin,double newMax)
  30 {
  31         assert(newMin<=newMax);
  32         imin=newMin;
  33         imax=newMax;
  34 }
  35
  36 double
  37 Interval::getCentre()
  38 {
  39         return (imin+imax)/2;
  40 }
  41
  42 Interval*
  43 Interval::expandToInclude(const Interval *other)
  44 {
  45         imax=max(imax,other->imax);
  46         imin=min(imin,other->imin);
  47         return this;
  48 }
  49
  50 bool
  51 Interval::intersects(const Interval *other) const
  52 {
  53         return !(other->imin>imax || other->imax<imin);
  54 }
  55
  56 bool
  57 Interval::equals(const Interval *other) const {
  58         return imin==other->imin && imax==other->imax;
  59 }
  60
  61 } // namespace geos.index.strtree
  62 } // namespace geos.index
  63 } // namespace geos
  64