Imager::Color::Float(3User Contributed Perl DocumentatiImager::Color::Float(3)NAMEImager::Color::Float - Rough floating point sample color handling
SYNOPSIS
$color = Imager::Color->new($red, $green, $blue);
$color = Imager::Color->new($red, $green, $blue, $alpha);
$color = Imager::Color->new("#C0C0FF"); # html color specification
$color->set($red, $green, $blue);
$color->set($red, $green, $blue, $alpha);
$color->set("#C0C0FF"); # html color specification
($red, $green, $blue, $alpha) = $color->rgba();
@hsv = $color->hsv(); # not implemented but proposed
$color->info();
DESCRIPTION
This module handles creating color objects used by Imager. The idea is
that in the future this module will be able to handle color space
calculations as well.
A floating point Imager color consists of up to four components, each
in the range 0.0 to 1.0. Unfortunately the meaning of the components
can change depending on the type of image you're dealing with:
· for 3 or 4 channel images the color components are red, green,
blue, alpha.
· for 1 or 2 channel images the color components are gray, alpha,
with the other two components ignored.
An alpha value of zero is fully transparent, an alpha value of 1.0 is
fully opaque.
METHODS
new This creates a color object to pass to functions that need a color
argument.
set This changes an already defined color. Note that this does not
affect any places where the color has been used previously.
rgba()
This returns the red, green, blue and alpha channels of the color
the object contains.
info
Calling info merely dumps the relevant color to the log.
AUTHOR
Arnar M. Hrafnkelsson, addi@umich.edu And a great deal of help from
others - see the "README" for a complete list.
SEE ALSOImager(3), Imager::Color.
http://imager.perl.org/
perl v5.14.3 2012-09-28 Imager::Color::Float(3)
