Line2D.hpp

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/* 
 * Line2D.hpp 
 *
 * This file is part of the Chemical Data Processing Toolkit
 *
 * Copyright (C) 2003 Thomas Seidel <thomas.seidel@univie.ac.at>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
 
#ifndef CDPL_VIS_LINE2D_HPP
#define CDPL_VIS_LINE2D_HPP
 
#include "CDPL/Vis/APIPrefix.hpp"
#include "CDPL/Math/Vector.hpp"
 
 
namespace CDPL
{
 
    namespace Vis
    {
 
        class Rectangle2D;
 
        class CDPL_VIS_API Line2D
        {
 
          public:
            Line2D();
 
            Line2D(const Math::Vector2D& beg, const Math::Vector2D& end);
 
            Line2D(double beg_x, double beg_y, double end_x, double end_y);
 
            virtual ~Line2D() {}
 
            void setBegin(const Math::Vector2D& pt);
 
            void setBegin(double x, double y);
 
            const Math::Vector2D& getBegin() const;
 
            void setEnd(const Math::Vector2D& pt);
 
            void setEnd(double x, double y);
 
            const Math::Vector2D& getEnd() const;
 
            void setPoints(double beg_x, double beg_y, double end_x, double end_y);
 
            void setPoints(const Math::Vector2D& beg, const Math::Vector2D& end);
 
            void swapPoints();
 
            void getDirection(Math::Vector2D& dir) const;
 
            Math::Vector2D getDirection() const;
 
            void getCCWPerpDirection(Math::Vector2D& dir) const;
 
            Math::Vector2D getCCWPerpDirection() const;
 
            void getCWPerpDirection(Math::Vector2D& dir) const;
 
            Math::Vector2D getCWPerpDirection() const;
 
            void getCenter(Math::Vector2D& ctr) const;
 
            Math::Vector2D getCenter() const;
 
            double getLength() const;
 
            void translate(const Math::Vector2D& vec);
 
            void translateBegin(const Math::Vector2D& vec);
 
            void translateEnd(const Math::Vector2D& vec);
 
            bool containsPoint(const Math::Vector2D& pt) const;
 
            bool getIntersectionPoint(const Line2D& line, Math::Vector2D& pt) const;
 
            bool clipBeginAgainstLineSeg(const Line2D& line);
 
            bool clipEndAgainstLineSeg(const Line2D& line);
 
            bool setBeginToLineSegIntersection(const Line2D& line);
 
            bool setEndToLineSegIntersection(const Line2D& line);
 
            bool clipBeginAgainstRectangle(const Rectangle2D& rect);
 
            bool clipEndAgainstRectangle(const Rectangle2D& rect);
 
            double getDistance(const Math::Vector2D& pt) const;
 
            bool operator==(const Line2D& line) const;
 
            bool operator!=(const Line2D& line) const;
 
          private:
            Math::Vector2D begin;
            Math::Vector2D end;
        };
    } // namespace Vis
} // namespace CDPL
 
#endif // CDPL_VIS_LINE2D_HPP