"Convert::Color::RGB" - a color value represented as red/green/blue
my $red = Convert::Color::RGB->new( 1, 0, 0 );
# Can also parse strings
my $pink = Convert::Color::RGB->new( '1,0.7,0.7' );
my $cyan = Convert::Color->new( 'rgb:0,1,1' );
Objects in this class represent a color in RGB space, as a set of three
floating-point values in the range 0 to 1.
For representations using 8- or 16-bit integers, see Convert::Color::RGB8 and
Returns a new object to represent the set of values given. These values should
be floating-point numbers between 0 and 1. Values outside of this range will
Parses $string for values, and construct a new object similar to the above
three-argument form. The string should be in the form
containing the three floating-point values in decimal notation.
Accessors for the three components of the color.
Returns the individual red, green and blue color components of the color value.
Return a new color which is a blended combination of the two passed into it. The
optional $alpha parameter defines the mix ratio between the two colors,
defaulting to 0.5 if not defined. Values closer to 0 will blend more of
$color, closer to 1 will blend more of $other.
Return a measure of the distance between the two colors. This is the unweighted
Euclidean distance of the three color components. Two identical colors will
have a measure of 0, pure black and pure white have a distance of 1, and all
others will lie somewhere inbetween.
Return a measure of the distance between the two colors. This is the sum of the
squares of the differences of each of the color components. This is part of
the value used to calculate "dst_rgb", but since it involves no
square root it will be cheaper to calculate, for use in cases where only the
relative values matter, such as when picking the "best match" out of
a set of colors. It ranges between 0 for identical colours and 3 for the
distance between pure black and pure white.
The "alpha_blend" method can be used to generate a smooth gradient
between two colours.
my $blue = Convert::Color->new("vga:blue");
my $cyan = Convert::Color->new("vga:cyan");
say $blue->alpha_blend( $cyan, $_/10 )->as_rgb8->hex for 0 .. 10
- Convert::Color - color space conversions
- Convert::Color::HSV - a color value represented as
- Convert::Color::HSL - a color value represented as
Paul Evans <email@example.com>