NAME

Graph::Drawing - Base class for graph drawing functionality

SYNOPSIS

#use Graph::Drawing::ForceDirected;       # Not implemented.
#use Graph::Drawing::SimulatedAnnealing;  # Not implemented.
#use Graph::Drawing::Magnetic;            # Not implemented.
#use Graph::Drawing::Heirarchical;        # Not implemented.
#use Graph::Drawing::Orthogonal;          # Not implemented.

use Graph::Drawing::Random;

$g = Graph::Drawing::Random->new(%args);

$g->surface->write_image;

DESCRIPTION

This module is a base class from which the Graph::Drawing subclasses derive common functionality.

This module is a subclass of Graph::Weighted, which in turn is a subclass of Graph::Directed. Thus, every appropriate method available in those modules, is also available to a Graph::Drawing object.

Please see the Graph::Drawing::* subclass SYNOPSIS sections for usage descriptions.

Please see the distribution eg/ directory for a working, if only feeble, example.

ABSTRACT

Base class for graph drawing functionality.

PUBLIC METHODS

new_surface %ARGUMENTS

Create and return a new surface object.

name $STRING

The file name (without the extension like ".png") to use when saving the image. This attribute is prepended to the format attribute to make the image filename.

format $STRING

The graphic file format to use when saving. Currently, this is only the PNG format.

This object attribute is appended (automatically) to the name attribute, as the "file extension", to make the image filename.

type $MODULE

Specify the graphics module to use. Currently, this is only GD. (Imager is next!)

surface_size $PIXELS

The size of the (square) surface, in pixels.

grade $PIXELS

The gradation interval.

surface

Accessor to the Graph::Drawing::Surface object.

new_vertex %ARGUMENTS

Create and return a new vertex object.

name $IDENTIFIER

The name to use to identify the vertex. Currently, this must be unique among the rest of the vertices.

vertex_size $PIXELS

The size of the vertex diameter, in pixels.

vertex $NAME

Return the Graph::Drawing::Vertex object, given the vertex name.

PRIVATE METHODS

_debug

This method is inherited from the parent class, Graph::Weighted and like all the other methods there, can be called directly, on a Graph::Drawing object.

SEE ALSO

Graph::Base

Graph::Weighted

Graph::Drawing

Graph::Drawing::Surface

Graph::Drawing::Vertex

Graph::Drawing::Random

TO DO

A little less than everything.

If you would like to contribute to this project, please contact me and I will rejoice.

AUTHOR

Gene Boggs <gene@cpan.org>

COPYRIGHT AND LICENSE

Copyright 2003 by Gene Boggs

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.