point.py

def getChar(x, y, accuracy, fns):
    d = 1 / accuracy / 2
    res = ' '
    clr = 0
    n = 0
    for fn in fns:
        ll = 1 if fn(x, y)[0] else 0
        lr = 2 if fn(x + d, y)[0] else 0
        ul = 4 if fn(x, y + d)[0] else 0
        ur = 8 if fn(x + d, y + d)[0] else 0
        char = ll + lr + ul + ur
        if char == 0:
            continue
        clr += fn(x, y)[1]
        n += 1
        res = [
                ' ', # 0000
                '▖', # 0001 (ll)
                '▗', # 0010 (lr)
                '▄', # 0011 (lr + ll = l_)
                '▘', # 0100 (ul)
                '▌', # 0101 (ul + ll + _l)
                '▚', # 0110 (ul + lr)
                '▙', # 0111 (ul + lr + ll)
                '▝', # 1000 (ur)
                '▞', # 1001 (ur + ll)
                '▐', # 1010 (ur + lr = _r)
                '▟', # 1011 (ur + lr + ll)
                '▀', # 1100 (ur + ul = u_)
                '▛', # 1101 (ur + ul + ll)
                '▜', # 1110 (ur + ul + lr)
                '█', # 1111 (ur + ul + lr + ll = __)
            ][char]
    if n == 0:
        return ' '
    if n > 1:
        clr = (clr % 7) + 1
    return '\x1b[3{}m{}\x1b[0m'.format(clr, res)

def plot(*fns, accuracy=5, xs=(-5, 5), ys=(-5,5)):
    accuracy = 5
    iList = list(reversed(
        range(xs[0]*accuracy, xs[1]*accuracy + 1)
    ))
    jList = list(
        range(ys[0]*accuracy, ys[1]*accuracy + 1)
    )

    names = '; '.join(fn.__name__ for fn in fns)
    placeholder = '*' * len(names)
    prenames = placeholder.center(len(jList), '~')
    names = '; '.join(
        '\x1b[3{}m{}\x1b[0m'.format(fn(0, 0)[1], fn.__name__)
        for fn in fns
    )
    print('\n', prenames.replace(placeholder, names))
    for i in iList:
        for j in jList:
            x = j / accuracy
            y = i / accuracy

            print(getChar(x, y, accuracy, fns), end='')
        print('.', i / accuracy)
    for j in jList:
        if j % accuracy == 0:
            print(abs(j // accuracy), end='')
        else:
            print('.', end='')
    print('')


def thick(thickness=0.3):
    def helper(f):
        def res(x, y):
            val = f(x)
            color = None
            if isinstance(val, tuple):
                val, color = val
            if val is None:
                val = False
            else:
                val = abs(val - y) <= thickness
            if color is not None:
                return val, color
            else:
                return val
        return res
    return helper


def colored(color=1):
    def helper(f):
        def res(*args, **kwargs):
            val = f(*args, **kwargs)
            if isinstance(val, tuple):
                val, _ = val
            return val, color
        return res
    return helper


def named(name=None):
    def helper(f):
        def res(*args, **kwargs):
            return f(*args, **kwargs)
        res.__name__ = name
        return res
    return helper


def patch(name=None, color=None, thickness=None):
    def res(func):
        n = name if name is not None else func.__name__
        if thickness is not None:
            func = thick(thickness)(func)
        if color is not None:
            func = colored(color)(func)
        func.__name__ = n
        return func
    return res

def in_complex(func):
    def wrapped(x, y):
        return func(x + y*1j)
    wrapped.__name__ = func.__name__
    return wrapped

plot(
    patch(color=3, name='Circle')(
        in_complex(lambda z: abs(z) <= 4)
    ),
)

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