57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
//
|
|
// ZoneMinder Polygon Class Interfaces, $Date$, $Revision$
|
|
// Copyright (C) 2001-2008 Philip Coombes
|
|
//
|
|
// This program is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU General Public License
|
|
// as published by the Free Software Foundation; either version 2
|
|
// of the License, or (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
//
|
|
|
|
#ifndef ZM_POLY_H
|
|
#define ZM_POLY_H
|
|
|
|
#include "zm_box.h"
|
|
#include <vector>
|
|
|
|
// This class represents convex or concave non-self-intersecting polygons.
|
|
class Polygon {
|
|
public:
|
|
Polygon() : area(0) {}
|
|
explicit Polygon(std::vector<Vector2> vertices);
|
|
|
|
const std::vector<Vector2> &GetVertices() const {
|
|
return vertices_;
|
|
}
|
|
|
|
const Box &Extent() const { return extent; }
|
|
int32 Area() const { return area; }
|
|
const Vector2 &Centre() const { return centre; }
|
|
|
|
bool Contains(const Vector2 &coord) const;
|
|
|
|
void Clip(const Box &boundary);
|
|
|
|
private:
|
|
void UpdateExtent();
|
|
void UpdateArea();
|
|
void UpdateCentre();
|
|
|
|
private:
|
|
std::vector<Vector2> vertices_;
|
|
Box extent;
|
|
int32 area;
|
|
Vector2 centre;
|
|
};
|
|
|
|
#endif // ZM_POLY_H
|