NAME

Math::ColorRGBA - Perl class to represent rgba colors

TREE

-+- Math::ColorRGBA

SEE ALSO

Math

Math::Color, Math::Image, Math::Vec2, Math::Vec3, Math::Rotation

SYNOPSIS

        use Math::ColorRGBA;
        my $c = new Math::ColorRGBA;  # Make a new Color

        my $c1 = new Math::ColorRGBA(0,1,0,0);

DESCRIPTION

DefaultValue

        0 0 0 0

METHODS

new(r,g,b,a)

r, g, b, a are given on [0, 1].

        my $c = new Math::ColorRGBA;                                      
        my $c2 = new Math::ColorRGBA(0, 0.5, 1, 0);   
        my $c3 = new Math::ColorRGBA([0, 0.5, 1, 1]); 

copy

Makes a copy

        $c2 = $c1->copy;

setValue(r,g,b,a)

Sets the value of the color. r, g, b, a are given on [0, 1].

        $c1->setValue(0, 0.2, 1, 0);

setRed(r)

Sets the first value of the color r is given on [0, 1].

        $c1->setRed(1);

        $c1->red = 1;
        $c1->r   = 1;
        $c1->[0] = 1;

setGreen(g)

Sets the second value of the color. g is given on [0, 1].

        $c1->setGreen(0.2);

        $c1->green = 0.2;
        $c1->g   = 0.2;
        $c1->[1] = 0.2;

setBlue(b)

Sets the third value of the color. b is given on [0, 1].

        $c1->setZ(0.3);

        $c1->z   = 0.3;
        $c1->[2] = 0.3;

setAlpha(alpha)

Sets the first value of the vector

        $v1->setAlpha(1);

        $v1->alpha = 1;
        $v1->[3] = 1;

getValue

Returns the value of the color (r, g, b, a) as a 4 components array.

        @v = $c1->getValue;

getRed

Returns the first value of the color.

        $r = $c1->getRed;
        $r = $c1->red;
        $r = $c1->r;
        $r = $c1->[0];

getGreen

Returns the second value of the color.

        $g = $c1->getGreen;
        $g = $c1->green;
        $g = $c1->g;
        $g = $c1->[1];

alpha

getBlue

Returns the third value of the color.

        $b = $c1->getBlue;
        $b = $c1->blue;
        $b = $c1->b;
        $b = $c1->[2];

alpha

getAlpha

Returns the fourth value of the color.

        $a = $v1->getAlpha;
        $a = $v1->alpha;
        $a = $v1->[3];

setHSV(h,s,v)

h, s, v are given on [0, 1]. RGB are each returned on [0, 1].

        $c->setHSV(1/12,1,1);  # 1 0.5 0

getHSV

h, s, v are each returned on [0, 1].

        @hsv = $c->getHSV;

toString

Returns a string representation of the color. This is used to overload the '""' operator, so that color may be freely interpolated in strings.

        my $c = new Math::ColorRGBA(0.1, 0.2, 0.3);
        print $c->toString; # "0.1, 0.2, 0.3"
        print "$c";         # "0.1, 0.2, 0.3"

SEE ALSO

Math

Math::Color, Math::Image, Math::Vec2, Math::Vec3, Math::Rotation

BUGS & SUGGESTIONS

If you run into a miscalculation, need some sort of feature or an additional holiday, or if you know of any new changes to the funky math, please drop the author a note.

ARRANGED BY

Holger Seelig holger.seelig@yahoo.de

COPYRIGHT

This is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

cpanm Math

perl -MCPAN -e shell
install Math