GEOS
3.8.1
include
geos
algorithm
Orientation.h
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/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (C) 2018 Paul Ramsey <pramsey@cleverlephant.ca>
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************
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*
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* Last port: algorithm/Orientation.java @ 2017-09-04
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*
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**********************************************************************/
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#ifndef GEOS_ALGORITHM_ORIENTATION_H
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#define GEOS_ALGORITHM_ORIENTATION_H
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#include <geos/export.h>
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#include <geos/geom/Coordinate.h>
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#include <geos/geom/CoordinateSequence.h>
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namespace
geos
{
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namespace
algorithm {
// geos::algorithm
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class
GEOS_DLL Orientation {
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public
:
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/* A value that indicates an orientation or turn */
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enum
{
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CLOCKWISE = -1,
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COLLINEAR = 0,
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COUNTERCLOCKWISE = 1,
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RIGHT = -1,
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LEFT = 1,
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STRAIGHT = 0
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};
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static
int
index(
const
geom::Coordinate& p1,
const
geom::Coordinate& p2,
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const
geom::Coordinate& q);
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static
bool
isCCW(
const
geom::CoordinateSequence* ring);
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};
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}
// namespace geos::algorithm
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}
// namespace geos
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#endif // GEOS_ALGORITHM_ORIENTATION_H
geos
Basic namespace for all GEOS functionalities.
Definition:
IndexedNestedRingTester.h:25
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