
################################################################################
asciiporn is designed for interactive graphics viewing within an ssh terminal,
by converting graphics into colorized ascii-art. asciiporn has 256 color support
& contains integrated c code for efficent graphics rendering.
asciiporn can easily render 32bit megapixel graphics on a 1ghz 500mb machine

screenshots of both plotting and image viewing r included w/ this distribution.
asciiporn is hard-coded to use lucida-console font, but courier font will work
as well.  the screenshots show putty ssh w/ lucida-console 5pt.

how to enable 256 color in putty:  http://www.emacswiki.org/emacs/PuTTY#toc2
how to enable 256 color in xterm:  http://www.frexx.de/xterm-256-notes/
how to enable 256 color in screen: http://www.frexx.de/xterm-256-notes/

for basic usage, remotely run python in an ssh terminal:

  >>> ## print image file as colorized ascii art
  >>> from asciiporn import img2txt
  >>> print img2txt("mario.jpg")

  >>> ## plot several math functions
  >>> from asciiporn import plot
  >>> from math import cos, sin, pi
  >>> print plot(ft = [cos, sin], tmin = 0.0, tmax = 2*pi)

  >>> ## plot 3d function
  >>> from asciiporn import plot3d
  >>> from math import sin, pi
  >>> print plot3d(
  ...   ftz = lambda t, z: sin(t + t*z), ## 3d function
  ...   tmin = 0.0, tmax = 2*pi,         ## range of t
  ...   zmin = 0.0, zmax = 0.25,         ## range of z
  ... )

AUTHOR:
  kai zhu
  kaizhu@ugcs.caltech.edu

REQUIREMENTS:
- posix os
- Python Imaging Library  http://www.pythonware.com/products/pil
- numpy                   http://www.scipy.org/Download

PSEUDOMETHOD:
  asciiporn uses ".." syntax notation for pseudomethods
  goto: http://pypi.python.org/pypi/pseudomethod
  for more details about this feature

API:
  asciiporn module:
  - img2plaintxt - converts image file to portable plain txt
                   u can copy & paste in documents
  - img2txt - converts image to high-quality colorized txt
              for display on terminals supporting 256 color (putty, xterm...)
  - plot - plot multiple 2d functions
  - plot3d - plots a 3d function that takes in 2 parameters

INSTALL:
  python setup.py build
  python setup.py install
  python setup.py dev --quicktest

################################################################################
PLOT USAGE:

2d plots take 2 main arguments:
  y - a list of functions to plot
  trange - t domain

  >>> import asciiporn, numpy
  >>> asciiporn.plot(
  ...   ft = [                  ## list of single argument functions
  ...     numpy.cos,
  ...     numpy.sin,
  ...     lambda t: numpy.sin(t + 0.25),
  ...     ],
  ...   tmin = 0.0, tmax = 7.0, ## range of t
  ... )



SIDEVIEW Y:    Z  0 to 2    Y  -0.99983900113 to 1.0    T  0.0 to 7.0    MIN MAX
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3d plots have an extra argument:
  zrange - z domain

  >>> import asciiporn, numpy
  >>> asciiporn.plot3d(
  ...   ftz = lambda t, z: numpy.sin(t + t*z), ## 3d function
  ...   tmin = 0.0, tmax = 7.0,                ## range of t
  ...   zmin = 0.0, zmax = 0.25,               ## range of z
  ... )



SIDEVIEW Y:    Z  0.0 to 0.25    Y  -0.999 to 0.9999    T  0.0 to 7.0    MIN MAX
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asciiporn can also plot user-supplied (y,t) datapoint pairs:

  >>> import asciiporn, numpy
  >>> t =  numpy.arange(1000)   ## create t coord datapoints
  >>> y =  numpy.sin( 0.01*t )  ## create y coord datapoints
  >>> yt = list(zip( y, t ))    ## create (y,t) datapoint pairs
  >>> asciiporn.plot( yt = yt )



SIDEVIEW Y:    Z  0 to 0    Y  -0.99999 to 0.99999    T  0.0 to 999.0    MIN MAX
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################################################################################
IMAGE USAGE:

in this example, u'll b loading the image file included w/ this distribution,
"mario.jpg".  its a fairly large image, so u prolly want to scale it down
to 0.5 (or less):
  >>> colortxt = asciiporn.img2txt("mario.jpg", scale = 0.5)
  >>> print( colortxt )

  ... beautiful color image appears ^_-

  >>> plaintxt = asciiporn.img2plaintxt("mario.jpg", scale = 0.75)
  >>> print( plaintxt )

  ... rather plain b/w img -_-, but u can copy & paste in documents ...



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actually, the plaintxt prolly won't look well when pasted,
b/c most document readers invert the color:
  >>> plaintxt = asciiporn.img2plaintxt('mario.jpg', scale = 0.5, invert = True)
  >>> print( plaintxt )

  ... b/w img w/ colors inverted.  may look funny now :/
      but it'll b normal when pasted in document

################################################################################
RECENT CHANGELOG:
  removed py3to2 requirement
  update documentation
20090103
  rewrote 3d plotter
  fixed more 64bit issues
20081123
  fixed bug where 64bit  gets truncated to 32 on 32bit machine
  256 color support
20081119
  fixed bugs in setup.py
