%% Copyright (c) 2011, INRA
%% 2007-2011, David Legland <david.legland@grignon.inra.fr>
%% 2011 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
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%% -*- texinfo -*-
%% @deftypefn {Function File} geom2d_Contents ()
%% Geometry 2D Toolbox
%% Version 1.2.0 21-Oct-2011 .
%%
%% 	Library to handle and visualize geometric primitives such as points,
%% 	lines, circles and ellipses, polygons...
%%
%%   The goal is to provide a low-level library for manipulating geometrical
%%   primitives, making easier the development of more complex geometric
%%   algorithms.
%%
%%   Most functions works for planar shapes, but some ones have been
%%   extended to 3D or to any dimension.
%%
%% Points
%%   points2d             - Description of functions operating on points
%%   clipPoints           - Clip a set of points by a box
%%   centroid             - Compute centroid (center of mass) of a set of points
%%   midPoint             - Middle point of two points or of an edge
%%   isCounterClockwise   - Compute relative orientation of 3 points
%%   polarPoint           - Create a point from polar coordinates (rho + theta)
%%   angle2Points         - Compute horizontal angle between 2 points
%%   angle3Points         - Compute oriented angle made by 3 points
%%   angleSort            - Sort points in the plane according to their angle to origin
%%   distancePoints       - Compute distance between two points
%%   minDistancePoints    - Minimal distance between several points
%%   transformPoint       - Transform a point with an affine transform
%%   drawPoint            - Draw the point on the axis.
%%
%% Vectors
%%   vectors2d            - Description of functions operating on plane vectors
%%   createVector         - Create a vector from two points
%%   vectorNorm           - Compute norm of a vector, or of a set of vectors
%%   vectorAngle          - Angle of a vector, or between 2 vectors
%%   normalizeVector      - Normalize a vector to have norm equal to 1
%%   isPerpendicular      - Check orthogonality of two vectors
%%   isParallel           - Check parallelism of two vectors
%%   transformVector      - Transform a vector with an affine transform
%%   rotateVector         - Rotate a vector by a given angle
%%
%% Straight lines
%%   lines2d              - Description of functions operating on planar lines
%%   createLine           - Create a straight line from 2 points, or from other inputs
%%   medianLine           - Create a median line between two points
%%   cartesianLine        - Create a straight line from cartesian equation coefficients
%%   orthogonalLine       - Create a line orthogonal to another one.
%%   parallelLine         - Create a line parallel to another one.
%%   intersectLines       - Return all intersection points of N lines in 2D
%%   lineAngle            - Computes angle between two straight lines
%%   linePosition         - Position of a point on a line
%%   lineFit              - Fit a straight line to a set of points
%%   clipLine             - Clip a line with a box
%%   reverseLine          - Return same line but with opposite orientation
%%   transformLine        - Transform a line with an affine transform
%%   drawLine             - Draw the line on the current axis
%%
%% Edges (line segments between 2 points)
%%   edges2d              - Description of functions operating on planar edges
%%   createEdge           - Create an edge between two points, or from a line
%%   edgeToLine           - Convert an edge to a straight line
%%   edgeAngle            - Return angle of edge
%%   edgeLength           - Return length of an edge
%%   midPoint             - Middle point of two points or of an edge
%%   edgePosition         - Return position of a point on an edge
%%   clipEdge             - Clip an edge with a rectangular box
%%   reverseEdge          - Intervert the source and target vertices of edge
%%   intersectEdges       - Return all intersections between two set of edges
%%   intersectLineEdge    - Return intersection between a line and an edge
%%   transformEdge        - Transform an edge with an affine transform
%%   drawEdge             - Draw an edge given by 2 points
%%   drawCenteredEdge     - Draw an edge centered on a point
%%
%% Rays
%%   rays2d               - Description of functions operating on planar rays
%%   createRay            - Create a ray (half-line), from various inputs
%%   bisector             - Return the bisector of two lines, or 3 points
%%   clipRay              - Clip a ray with a box
%%   drawRay              - Draw a ray on the current axis
%%
%% Relations between points and lines
%%   distancePointEdge    - Minimum distance between a point and an edge
%%   distancePointLine    - Minimum distance between a point and a line
%%   projPointOnLine      - Project of a point orthogonally onto a line
%%   pointOnLine          - Create a point on a line at a given position on the line
%%   isPointOnLine        - Test if a point belongs to a line
%%   isPointOnEdge        - Test if a point belongs to an edge
%%   isPointOnRay         - Test if a point belongs to a ray
%%   isLeftOriented       - Test if a point is on the left side of a line
%%
%% Circles
%%   circles2d            - Description of functions operating on circles
%%   createCircle         - Create a circle from 2 or 3 points
%%   createDirectedCircle - Create a directed circle
%%   intersectCircles     - Intersection points of two circles
%%   intersectLineCircle  - Intersection point(s) of a line and a circle
%%   circleAsPolygon      - Convert a circle into a series of points
%%   circleArcAsCurve     - Convert a circle arc into a series of points
%%   isPointInCircle      - Test if a point is located inside a given circle
%%   isPointOnCircle      - Test if a point is located on a given circle.
%%   enclosingCircle      - Find the minimum circle enclosing a set of points.
%%   radicalAxis          - Compute the radical axis (or radical line) of 2 circles
%%   drawCircle           - Draw a circle on the current axis
%%   drawCircleArc        - Draw a circle arc on the current axis
%%
%% Ellipses
%%   ellipses2d           - Description of functions operating on ellipses
%%   inertiaEllipse       - Inertia ellipse of a set of points
%%   isPointInEllipse     - Check if a point is located inside a given ellipse
%%   ellipseAsPolygon     - Convert an ellipse into a series of points
%%   drawEllipse          - Draw an ellipse on the current axis
%%   drawEllipseArc       - Draw an ellipse arc on the current axis
%%
%% Geometric transforms
%%   transforms2d         - Description of functions operating on transforms
%%   createTranslation    - Create the 3*3 matrix of a translation
%%   createRotation       - Create the 3*3 matrix of a rotation
%%   createScaling        - Create the 3*3 matrix of a scaling in 2 dimensions
%%   createHomothecy      - Create the the 3x3 matrix of an homothetic transform
%%   createBasisTransform - Compute matrix for transforming a basis into another basis
%%   createLineReflection - Create the the 3x3 matrix of a line reflection
%%   fitAffineTransform2d - Fit an affine transform using two point sets
%%
%% Angles
%%   angles2d             - Description of functions for manipulating angles
%%   normalizeAngle       - Normalize an angle value within a 2*PI interval
%%   angleAbsDiff         - Absolute difference between two angles
%%   angleDiff            - Difference between two angles
%%   deg2rad              - Convert angle from degrees to radians
%%   rad2deg              - Convert angle from radians to degrees
%%
%% Boxes
%%   boxes2d              - Description of functions operating on bounding boxes
%%   intersectBoxes       - Intersection of two bounding boxes
%%   mergeBoxes           - Merge two boxes, by computing their greatest extent
%%   randomPointInBox     - Generate random point within a box
%%   drawBox              - Draw a box defined by coordinate extents
%%
%% Various drawing functions
%%   drawBezierCurve      - Draw a cubic bezier curve defined by 4 control points
%%   drawParabola         - Draw a parabola on the current axis
%%   drawOrientedBox      - Draw centered oriented rectangle
%%   drawRect             - Draw rectangle on the current axis
%%   drawArrow            - Draw an arrow on the current axis
%%   drawLabels           - Draw labels at specified positions
%%   drawShape            - Draw various types of shapes (circles, polygons...)
%%
%% Other shapes
%%   squareGrid           - Generate equally spaces points in plane.
%%   hexagonalGrid        - Generate hexagonal grid of points in the plane.
%%   triangleGrid         - Generate triangular grid of points in the plane.
%%   crackPattern         - Create a (bounded) crack pattern tessellation
%%   crackPattern2        - Create a (bounded) crack pattern tessellation
%%
%%
%%   Credits:
%%   * function 'enclosingCircle' rewritten from a file from Yazan Ahed
%%    , available on Matlab File Exchange
%%
%% @end deftypefn

function geom2d_Contents ()

  help('geom2d_Contents');

  %%   Deprecated functions

  %   createMedian         - create a median line
  %   minDistance          - compute minimum distance between a point and a set of points
  %   homothecy            - create a homothecy as an affine transform
  %   rotation             - return 3*3 matrix of a rotation
  %   translation          - return 3*3 matrix of a translation
  %   scaling              - return 3*3 matrix of a scaling in 2 dimensions
  %   lineSymmetry         - create line symmetry as 2D affine transform
  %   vecnorm              - compute norm of vector or of set of vectors
  %   normalize            - normalize a vector
  %   onCircle             - test if a point is located on a given circle.
  %   inCircle             - test if a point is located inside a given circle.
  %   onEdge               - test if a point belongs to an edge
  %   onLine               - test if a point belongs to a line
  %   onRay                - test if a point belongs to a ray
  %   invertLine           - return same line but with opposite orientation
  %   clipLineRect         - clip a line with a polygon
  %   formatAngle          - Ensure an angle value is comprised between 0 and 2*PI


  %% Others...
  %   drawRect2            - Draw centered rectangle on the current axis

endfunction
