GEOS  3.8.0dev
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 
23 namespace geos {
24 namespace geom { // geos::geom
25 
31 class GEOS_DLL Triangle {
32 public:
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 
49  void inCentre(Coordinate& resultPoint);
50 
67  void circumcentre(Coordinate& resultPoint);
68 
69  static const Coordinate circumcentre(const Coordinate& p0, const Coordinate& p1, const Coordinate& p2);
70 
71 private:
72 
87  double det(double m00, double m01, double m10, double m11) const;
88 
89 };
90 
91 
92 } // namespace geos::geom
93 } // namespace geos
94 
95 //#ifdef GEOS_INLINE
96 //# include "geos/geom/Triangle.inl"
97 //#endif
98 
99 #endif // ndef GEOS_GEOM_TRIANGLE_H
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25
Represents a planar triangle, and provides methods for calculating various properties of triangles...
Definition: Triangle.h:31