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## Copyright (C) 2024 David Legland
## All rights reserved.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
## 1 Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
## 2 Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
## ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
##
## The views and conclusions contained in the software and documentation are
## those of the authors and should not be interpreted as representing official
## policies, either expressed or implied, of the copyright holders.
function lines2d(varargin)
%LINES2D Description of functions operating on planar lines.
%
% The term 'line' refers to a planar straight line, which is an unbounded
% curve. Line segments defined between 2 points, which are bounded, are
% called 'edge', and are presented in file 'edges2d'.
%
% A straight line is defined by a point (its origin), and a vector (its
% direction). The parameters are bundled into a 1-by-4 row vector:
% LINE = [x0 y0 dx dy];
%
% A line contains all points (x,y) such that:
% x = x0 + t*dx
% y = y0 + t*dy;
% for all t between -infinity and +infinity.
%
% See also
% points2d, vectors2d, edges2d, rays2d
% createLine, cartesianLine, medianLine, edgeToLine, lineToEdge
% orthogonalLine, parallelLine, bisector, radicalAxis, fitLine
% lineAngle, linePosition, projPointOnLine
% isPointOnLine, distancePointLine, isLeftOriented
% intersectLines, intersectLineEdge, clipLine
% reverseLine, transformLine, drawLine
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2008-10-13, using Matlab 7.4.0.287 (R2007a)
% Copyright 2008-2023 INRA - BIA PV Nantes - MIAJ Jouy-en-Josas
help('lines2d');
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