/* ScummVM - Graphic Adventure Engine

*

* ScummVM is the legal property of its developers, whose names

* are too numerous to list here. Please refer to the COPYRIGHT

* file distributed with this source distribution.

*

* 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 3 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, see <http://www.gnu.org/licenses/>.

*

*/

#ifndef MATH_LINE2D_H

#define MATH_LINE2D_H

#include "math/vector2d.h"

namespace Math {

class Line2d {

public:

Line2d(const Vector2d &direction, const Vector2d &point);

Line2d getPerpendicular(const Vector2d &point = Vector2d()) const;

Vector2d getDirection() const;

float getDistanceTo(const Vector2d &point, Vector2d *intersection) const;

bool intersectsLine(const Line2d &line, Vector2d *pos) const;

bool containsPoint(const Vector2d &point) const;

friend Common::StreamDebug &operator<<(Common::StreamDebug &dbg, const Line2d &line);

private:

float _a, _b, _c;

};

class Segment2d {

public:

Segment2d();

Segment2d(const Vector2d &begin, const Vector2d &end);

Segment2d(const Segment2d &other);

Vector2d begin() const;

Vector2d end() const;

Vector2d middle() const;

Line2d getLine() const;

Line2d getPerpendicular(const Vector2d &point = Vector2d()) const;

bool containsPoint(const Vector2d &point) const;

bool intersectsLine(const Line2d &line, Vector2d *pos);

bool intersectsSegment(const Segment2d &line, Vector2d *pos);

Segment2d &operator=(const Segment2d &other);

private:

Math::Vector2d _begin, _end;

};

}

#endif