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# -*- coding: utf-8 -*- r""" ASCII Art
This file contains:
- :class:`AsciiArt` an simple implementation of an ASCII art object, - :func:`ascii_art` a function to get the ASCII art representation of any object in Sage,
AUTHOR:
- Jean-Baptiste Priez (2013-04): initial version
EXAMPLES::
sage: n = var('n') sage: integrate(n^2/x,x) n^2*log(x) sage: ascii_art(integrate(n^2/x,x)) 2 n *log(x) sage: ascii_art(integrate(n^2/(pi*x),x)) 2 n *log(x) --------- pi sage: ascii_art(list(Partitions(6))) [ * ] [ ** * ] [ *** ** * * ] [ **** *** * ** ** * * ] [ ***** **** * *** ** * ** * * * ] [ ******, * , ** , * , ***, * , * , **, * , * , * ]
This method :meth:`ascii_art` could be automatically use by the display hook manager activated by the magic function: ``%display ascii_art``::
sage: from sage.repl.interpreter import get_test_shell sage: shell = get_test_shell() sage: shell.run_cell('%display ascii_art') sage: shell.run_cell("i = var('i')") sage: shell.run_cell('sum(factorial(i)*x^i, i, 0, 10)') 10 9 8 7 6 5 4 3 3628800*x + 362880*x + 40320*x + 5040*x + 720*x + 120*x + 24*x + 6*x <BLANKLINE> 2 + 2*x + x + 1 sage: shell.run_cell('3/(7*x)') 3 --- 7*x sage: shell.run_cell('list(Compositions(5))') [ * [ * ** * * * [ * * ** *** * ** * * ** * * [ * * * * ** ** *** **** * * ** *** * ** * [ *, * , * , * , * , * , * , * , **, ** , ** , ** , ***, *** , ****, <BLANKLINE> ] ] ] ] ***** ] sage: shell.run_cell('%display simple') sage: shell.quit()
::
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from sage.typeset.character_art import CharacterArt from sage.typeset.character_art_factory import CharacterArtFactory import sage.typeset.symbols as symbol
class AsciiArt(CharacterArt): r""" An Ascii art object is an object with some specific representation for *printing*.
INPUT:
- ``lines`` -- the list of lines of the representation of the ascii art object
- ``breakpoints`` -- the list of points where the representation can be split
- ``baseline`` -- the reference line (from the bottom)
EXAMPLES::
sage: i = var('i') sage: ascii_art(sum(pi^i/factorial(i)*x^i, i, 0, oo)) pi*x e """ _string_type = str
_ascii_art_factory = CharacterArtFactory( AsciiArt, str, '_ascii_art_', (symbol.ascii_left_parenthesis, symbol.ascii_right_parenthesis), (symbol.ascii_left_square_bracket, symbol.ascii_right_square_bracket), (symbol.ascii_left_curly_brace, symbol.ascii_right_curly_brace), )
empty_ascii_art = _ascii_art_factory.build_empty()
def ascii_art(*obj, **kwds): r""" Return an ASCII art representation
INPUT:
- ``*obj`` -- any number of positional arguments, of arbitrary type. The objects whose ascii art representation we want.
- ``sep`` -- optional ``'sep=...'`` keyword argument (or ``'separator'``). Anything that can be converted to ascii art (default: empty ascii art). The separator in-between a list of objects. Only used if more than one object given.
- ``baseline`` -- (default: 0) the baseline for the object
- ``sep_baseline`` -- (default: 0) the baseline for the separator
OUTPUT:
:class:`AsciiArt` instance.
EXAMPLES::
sage: ascii_art(integral(exp(x+x^2)/(x+1), x)) / | | 2 | x + x | e | ------- dx | x + 1 | /
We can specify a separator object::
sage: ident = lambda n: identity_matrix(ZZ, n) sage: ascii_art(ident(1), ident(2), ident(3), sep=' : ') [1 0 0] [1 0] [0 1 0] [1] : [0 1] : [0 0 1]
We can specify the baseline::
sage: ascii_art(ident(2), baseline=-1) + ascii_art(ident(3)) [1 0][1 0 0] [0 1][0 1 0] [0 0 1]
We can determine the baseline of the separator::
sage: ascii_art(ident(1), ident(2), ident(3), sep=' -- ', sep_baseline=-1) [1 0 0] -- [1 0] -- [0 1 0] [1] [0 1] [0 0 1]
If specified, the ``sep_baseline`` overrides the baseline of an ascii art separator::
sage: sep_line = ascii_art('\n'.join(' | ' for _ in range(6)), baseline=6) sage: ascii_art(*Partitions(6), separator=sep_line, sep_baseline=0) | | | | | | | | | | * | | | | | | | | | ** | * | | | | | | *** | | ** | * | * | | | **** | | *** | * | ** | ** | * | * | ***** | **** | * | *** | ** | * | ** | * | * | * ****** | * | ** | * | *** | * | * | ** | * | * | *
TESTS::
sage: n = var('n') sage: ascii_art(sum(binomial(2 * n, n + 1) * x^n, n, 0, oo)) / __________ \ -\2*x + \/ -4*x + 1 - 1/ -------------------------- __________ 2*x*\/ -4*x + 1 sage: ascii_art(list(DyckWords(3))) [ /\ ] [ /\ /\ /\/\ / \ ] [ /\/\/\, /\/ \, / \/\, / \, / \ ] sage: ascii_art(1) 1 """ raise ValueError('unknown keyword arguments: {0}'.format(list(kwds)))
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