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1 /****************************************************************************
2 ** $Id: rs_infoarea.h 1892 2004-07-09 23:54:59Z andrew $
3 **
4 ** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
5 **
6 ** This file is part of the qcadlib Library project.
7 **
8 ** This file may be distributed and/or modified under the terms of the
9 ** GNU General Public License version 2 as published by the Free Software
10 ** Foundation and appearing in the file LICENSE.GPL included in the
11 ** packaging of this file.
12 **
13 ** Licensees holding valid qcadlib Professional Edition licenses may use
14 ** this file in accordance with the qcadlib Commercial License
15 ** Agreement provided with the Software.
16 **
17 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
18 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 **
20 ** See http://www.ribbonsoft.com for further details.
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22 ** Contact info@ribbonsoft.com if any conditions of this licensing are
23 ** not clear to you.
24 **
25 **********************************************************************/
26
27 #ifndef RS_INFOAREA_H
28 #define RS_INFOAREA_H
29
30 #include <QtCore>
31 #include "vector.h"
32
33 /**
34  * Class for getting information about an area.
35  *
36  * @author Andrew Mustun
37  */
38 class RS_InfoArea
39 {
40         public:
41                 RS_InfoArea();
42                 ~RS_InfoArea();
43
44                 void reset();
45                 void addPoint(const Vector & p);
46                 void calculate();
47                 void close();
48                 bool isValid();
49                 bool isClosed();
50                 double getArea();
51                 double getCircumference();
52                 int count();
53
54         private:
55                 double calcSubArea(const Vector & p1, const Vector & p2);
56
57 //              Q3ValueVector<Vector> thePoints;
58                 QVector<Vector> thePoints;
59                 double baseY;
60                 double area;
61                 double circumference;
62 };
63
64 #endif