99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
/**********************************************************************
|
|
*
|
|
* GEOS - Geometry Engine Open Source
|
|
* http://geos.osgeo.org
|
|
*
|
|
* Copyright (C) 2011 Sandro Santilli <strk@kbt.io>
|
|
* 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.
|
|
*
|
|
**********************************************************************
|
|
*
|
|
* Last port: operation/predicate/RectangleIntersects.java r378 (JTS-1.12)
|
|
*
|
|
**********************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <geos/export.h>
|
|
|
|
#include <geos/geom/Polygon.h> // for inlines
|
|
|
|
// Forward declarations
|
|
namespace geos {
|
|
namespace geom {
|
|
class Envelope;
|
|
//class Polygon;
|
|
}
|
|
}
|
|
|
|
namespace geos {
|
|
namespace operation { // geos::operation
|
|
namespace predicate { // geos::operation::predicate
|
|
|
|
/** \brief
|
|
* Optimized implementation of the "intersects" spatial predicate
|
|
* for cases where one Geometry is a rectangle.
|
|
*
|
|
* This class works for all input geometries, including
|
|
* [GeometryCollections](@ref geom::GeometryCollection).
|
|
*
|
|
* As a further optimization,
|
|
* this class can be used to test
|
|
* many geometries against a single
|
|
* rectangle in a slightly more efficient way.
|
|
*
|
|
*/
|
|
class GEOS_DLL RectangleIntersects {
|
|
|
|
private:
|
|
|
|
const geom::Polygon& rectangle;
|
|
|
|
const geom::Envelope& rectEnv;
|
|
|
|
// Declare type as noncopyable
|
|
RectangleIntersects(const RectangleIntersects& other) = delete;
|
|
RectangleIntersects& operator=(const RectangleIntersects& rhs) = delete;
|
|
|
|
public:
|
|
|
|
/** \brief
|
|
* Create a new intersects computer for a rectangle.
|
|
*
|
|
* @param newRect a rectangular geometry
|
|
*/
|
|
RectangleIntersects(const geom::Polygon& newRect)
|
|
:
|
|
rectangle(newRect),
|
|
rectEnv(*(newRect.getEnvelopeInternal()))
|
|
{}
|
|
|
|
bool intersects(const geom::Geometry& geom);
|
|
|
|
/** \brief
|
|
* Tests whether a rectangle intersects a given geometry.
|
|
*
|
|
* @param rectangle a rectangular Polygon
|
|
* @param b a Geometry of any type
|
|
* @return true if the geometries intersect
|
|
*/
|
|
static bool
|
|
intersects(const geom::Polygon& rectangle,
|
|
const geom::Geometry& b)
|
|
{
|
|
RectangleIntersects rp(rectangle);
|
|
return rp.intersects(b);
|
|
}
|
|
|
|
};
|
|
|
|
|
|
} // namespace geos::operation::predicate
|
|
} // namespace geos::operation
|
|
} // namespace geos
|