NAME

Image::Caa - Colored ASCII Art

SYNOPSIS

  use Image::Caa;
  use Image::Magick;


  # load an image

  my $image = Image::Magick->new;
  $image->Read('sunset.jpg');


  # display it as ASCII Art

  my $caa = new Image::Caa();
  $caa->draw_bitmap(0, 0, 40, 20, $image);


  # some fancy options

  my $caa = new Image::Caa(
    driver => 'DriverANSI',
    dither => 'DitherOrdered8',
    black_bg => 1,
  );
  $caa->draw_bitmap(0, 0, 40, 20, $image);

DESCRIPTION

This module outputs "Image::Magick" image objects as ASCII Art, using a variety of output dithering modes and output drivers (currently supported is a plain old ANSI termical output driver and a curses driver).

METHODS

"new( opt => 'value', ... )": Returns a new "Image::Caa" object. The options are as follows:

•: "driver"
Output driver. Valid values are:

"DriverANSI" (default)
"DriverCurses"

•: "dither"
Dithering mode. Valid values are:

"DitherNone" (default)
"DitherOrdered2"
"DitherOrdered4"
"DitherOrdered8"
"DitherRandom"

"black_bg"
Set to 1 to enable black background mode. By default, we use colored backgrounds to allow 256 colors (16 foreground x 16 background)
"window"
Used only by the Curses output driver. Indicates the Curses window to write output into.

"draw_bitmap($x1, $y1, $x2, $y2, $image)": Draws the image $image within the box bounded by "($x1,$y1)-($x2,$y2)". Note that the default (ANSI) output driver ignores the origin position as uses only the absolute box size.

EXTENDING

Both the dithering and driver backends are plugable and fairly easy to create - just create modules in the Image::Caa::* namespace. Dither modules need to implement the "new()", "init($line)", "get()" and "increment()" methods. Driver modules need to implement the "new()", "init()", "set_color($fg, $bg)", "putchar($x, $y, $char)" and "fini()" methods. Look at the existing modules for guidance.

AUTHORS

This library is based on libcaca's bitmap.c