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lib/Graphics/Framebuffer.pm  view on Meta::CPAN

    $params->{'yy'} = $params->{'y'} + $params->{'height'};

    $self->clip_set($params);
}

sub monochrome {
=head2 monochrome

Removes all color information from an image, and leaves everything in greyscale.

It applies the following formula to calculate greyscale:

 grey_color = (red * 0.2126) + (green * 0.7155) + (blue * 0.0722)

=over 4

 Expects two parameters, 'image' and 'bits'.  The parameter 'image' is a string containing the image data.  The parameter 'bits' is how many bits per pixel make up the image.  Valid values are 16, 24, and 32 only.

 $fb->monochrome({
     'image' => "image data",
     'bits'  => 32

src/Framebuffer.pm.template  view on Meta::CPAN

    $params->{'yy'} = $params->{'y'} + $params->{'height'};

    $self->clip_set($params);
}

sub monochrome {
=head2 monochrome

Removes all color information from an image, and leaves everything in greyscale.

It applies the following formula to calculate greyscale:

 grey_color = (red * 0.2126) + (green * 0.7155) + (blue * 0.0722)

=over 4

 Expects two parameters, 'image' and 'bits'.  The parameter 'image' is a string containing the image data.  The parameter 'bits' is how many bits per pixel make up the image.  Valid values are 16, 24, and 32 only.

 $fb->monochrome({
     'image' => "image data",
     'bits'  => 32