Programming Web Graphics with Perl and GNU Softwar

Name

hue — return hue of a color

Synopsis

GIFgraph::colour::_hue(R, G, B)

This method will return the hue of a color represented by the given RGB list. The hue is represented as a floating point number in the range to 1, where is black and 1 is white. For example:

use GIFgraph::colour qw(:colours);
print _hue(51, 51, 51);                   # This is actually 20% grey

will give us a value of .2 for output.