RectangleIntersects.h

00001 /**********************************************************************
00002  * $Id: RectangleIntersects.h 1820 2006-09-06 16:54:23Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2006 Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************/
00015 
00016 #ifndef GEOS_OP_PREDICATE_RECTANGLEINTERSECTS_H
00017 #define GEOS_OP_PREDICATE_RECTANGLEINTERSECTS_H
00018 
00019 #include <geos/geom/Polygon.h> // for inlines
00020 
00021 // Forward declarations
00022 namespace geos {
00023         namespace geom {
00024                 class Envelope;
00025                 //class Polygon;
00026         }
00027 }
00028 
00029 namespace geos {
00030 namespace operation { // geos::operation
00031 namespace predicate { // geos::operation::predicate
00032 
00043 class RectangleIntersects {
00044 
00045 private:
00046 
00047         const geom::Polygon &rectangle;
00048 
00049         const geom::Envelope &rectEnv;
00050 
00051 public:
00052 
00060         static const size_t MAXIMUM_SCAN_SEGMENT_COUNT;
00061 
00067         RectangleIntersects(const geom::Polygon &newRect)
00068                 :
00069                 rectangle(newRect),
00070                 rectEnv(*(newRect.getEnvelopeInternal()))
00071         {}
00072 
00073         bool intersects(const geom::Geometry& geom);
00074 
00075         static bool intersects(const geom::Polygon &rectangle,
00076                         const geom::Geometry &b)
00077         {
00078                 RectangleIntersects rp(rectangle); 
00079                 return rp.intersects(b);
00080         }
00081 
00082 };
00083 
00084 
00085 } // namespace geos::operation::predicate
00086 } // namespace geos::operation
00087 } // namespace geos
00088 
00089 #endif // ifndef GEOS_OP_PREDICATE_RECTANGLEINTERSECTS_H

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