NAME

       Imager::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.

       red
       green
       blue
       alpha
           Returns the respective component as a floating point value typically from 0 to 1.0.

AUTHOR

       Arnar M. Hrafnkelsson, addi@umich.edu And a great deal of help from others  -  see  the  "README"  for  a
       complete list.

SEE ALSO

       Imager(3), Imager::Color.

       http://imager.perl.org/

perl v5.34.0                                       2022-02-06                          Imager::Color::Float(3pm)