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| Graphics::Color::RGB(3) | User Contributed Perl Documentation | Graphics::Color::RGB(3) |
NAME
Graphics::Color::RGB - RGB color model
VERSION
version 0.31
SYNOPSIS
use Graphics::Color::RGB;
my $color = Graphics::Color::RGB->new({
red => 1,
blue => .31,
green => .25,
});
DESCRIPTION
Graphics::Color::RGB represents a Color in the sRGB color space. Individual color channels are expressed as decimal values from 0 to 1, 0 being a lack of that color (or opaque in the case of alpha) and 1 being full color (or transparent in the case of alpha). If no options are provided then new instance of RGB are opaque white, (that is equivalent to red => 1, green => 1, blue => 1, alpha => 1).
Convenience methods are supplied to convert to various string values.
ATTRIBUTES
red
r
Set/Get the red component of this Color. Aliased to 'r' as well.
green
g
Set/Get the green component of this Color. Aliased to 'g' as well.
blue
b
Set/Get the blue component of this Color. Aliased to 'b' as well.
alpha
a
Set/Get the alpha component of this Color. Aliased to 'a' as well.
name
Get the name of this color. Only valid if the color was created by name.
METHODS
as_string
Get a string version of this Color in the form of RED,GREEN,BLUE,ALPHA
as_integer_string
Return an integer formatted value for this color. This format is suitable for CSS RGBA values.
as_css_hex
Return a hex formatted value with a prepended '#' for use in CSS and HTML.
as_hex_string ( [$prepend] )
Return a hex formatted value for this color. The output ignores the alpha channel because, per the W3C, there is no hexadecimal notiation for an RGBA value. Optionally allows you to include a string that will be prepended. This is a common way to add the "#".
as_percent_string
Return a percent formatted value for this color. This format is suitable for CSS RGBA values.
as_array
Get the RGB values as an array.
as_array_with_alpha
Get the RGBA values as an array
equal_to
Compares this color to the provided one. Returns 1 if true, else 0;
not_equal_to
The opposite of equal_to.
from_color_library ($color_id)
Attempts to retrieve the specified color-id using Color::Library. The result is then converted into a Graphics::Color::RGB object.
from_hex_string($hex)
Attempts to create a Graphics::Color::RGB object from a hex string. Works with or without the leading # and with either 3 or 6 character hex strings.
to_hsl
Creates this RGB color in HSL space. Returns a Graphics::Color::HSL object.
to_hsv
Creates this RGB color in HSV space. Returns a Graphics::Color::HSV object.
AUTHOR
Cory G Watson <gphat@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Cold Hard Code, LLC.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
| 2014-12-09 | perl v5.40.2 |
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