GEOS 3.9.1
Triangle.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2006 Refractions Research Inc.
7 *
8 * This is free software; you can redistribute and/or modify it under
9 * the terms of the GNU Lesser General Public Licence as published
10 * by the Free Software Foundation.
11 * See the COPYING file for more information.
12 *
13 **********************************************************************/
14
15#ifndef GEOS_GEOM_TRIANGLE_H
16#define GEOS_GEOM_TRIANGLE_H
17
18#include <geos/export.h>
19#include <geos/geom/Coordinate.h>
20
21#include <geos/inline.h>
22
23namespace geos {
24namespace geom { // geos::geom
25
31class GEOS_DLL Triangle {
32public:
33 Coordinate p0, p1, p2;
34
35 Triangle(const Coordinate& nP0, const Coordinate& nP1, const Coordinate& nP2)
36 :
37 p0(nP0),
38 p1(nP1),
39 p2(nP2)
40 {}
41
50 void inCentre(Coordinate& resultPoint);
51
69 void circumcentre(Coordinate& resultPoint);
70 void circumcentreDD(Coordinate& resultPoint);
71
72 bool isIsoceles();
73
75 static const Coordinate circumcentre(const Coordinate& p0, const Coordinate& p1, const Coordinate& p2);
76
77private:
78
93 double det(double m00, double m01, double m10, double m11) const;
94
95};
96
97
98} // namespace geos::geom
99} // namespace geos
100
101//#ifdef GEOS_INLINE
102//# include "geos/geom/Triangle.inl"
103//#endif
104
105#endif // ndef GEOS_GEOM_TRIANGLE_H
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
Represents a planar triangle, and provides methods for calculating various properties of triangles.
Definition: Triangle.h:31
void circumcentre(Coordinate &resultPoint)
Computes the circumcentre of a triangle.
static const Coordinate circumcentre(const Coordinate &p0, const Coordinate &p1, const Coordinate &p2)
Computes the circumcentre of a triangle.
void inCentre(Coordinate &resultPoint)
The inCentre of a triangle is the point which is equidistant from the sides of the triangle.
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:26