lines2d

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
   lineAngle, linePosition, projPointOnLine
   isPointOnLine, distancePointLine, isLeftOriented
   intersectLines, intersectLineEdge, clipLine
   reverseLine, transformLine, drawLine
   lineFit

0001 function lines2d(varargin)
0002 %LINES2D  Description of functions operating on planar lines.
0003 %
0004 %   The term 'line' refers to a planar straight line, which is an unbounded
0005 %   curve. Line segments defined between 2 points, which are bounded, are
0006 %   called 'edge', and are presented in file 'edges2d'.
0007 %
0008 %   A straight line is defined by a point (its origin), and a vector (its
0009 %   direction). The parameters are bundled into a 1-by-4 row vector:
0010 %   LINE = [x0 y0 dx dy];
0011 %
0012 %   A line contains all points (x,y) such that:
0013 %       x = x0 + t*dx
0014 %       y = y0 + t*dy;
0015 %   for all t between -infinity and +infinity.
0016 %
0017 %   See also:
0018 %   points2d, vectors2d, edges2d, rays2d
0019 %   createLine, cartesianLine, medianLine, edgeToLine, lineToEdge
0020 %   orthogonalLine, parallelLine, bisector, radicalAxis
0021 %   lineAngle, linePosition, projPointOnLine
0022 %   isPointOnLine, distancePointLine, isLeftOriented
0023 %   intersectLines, intersectLineEdge, clipLine
0024 %   reverseLine, transformLine, drawLine
0025 %   lineFit
0026 
0027 % ------
0028 % Author: David Legland
0029 % e-mail: david.legland@inra.fr
0030 % Created: 2008-10-13,    using Matlab 7.4.0.287 (R2007a)
0031 % Copyright 2008 INRA - BIA PV Nantes - MIAJ Jouy-en-Josas.
0032 
0033 help('lines2d');