/*  $Id$
 * 
 *  Copyright (c) 2010 Anders Wallin (anders.e.e.wallin "at" gmail.com).
 *  
 *  This file is part of OpenCAMlib 
 *  (see https://github.com/aewallin/opencamlib).
 *  
 *  This program 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 2.1 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 Lesser General Public License for more details.
 *  
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "line.hpp"

namespace ocl
{

Line::Line(const Point &p1in, const Point &p2in) {
    p1=p1in;
    p2=p2in;
}

Line::Line(const Line &l) {
    p1=l.p1;
    p2=l.p2;
}

std::ostream& operator<<(std::ostream &stream, const Line& l) {
  stream << "(" << l.p1 << ", " << l.p2 << ")";
  return stream;
}

double Line::length2d()const {
    return (p2 - p1).xyNorm();
}

Point Line::getPoint(double t) const {
    return (p2 - p1) * t + p1;
}

Point Line::Near(const Point& p) const {
    // returns the near point from a line on the extended line
    Point v = p2 - p1;
    v.normalize();
    double dp = (p - p1).dot(v);
    return p1 + (v * dp);
}

} // end namespace
// end file line.cpp