Gecko [ goons4good.org ]

Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
asyncio	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
collections	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
concurrent	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
config-3.5m	[ DIR ]	drwxr-xr-x	2024-08-18 01:02
ctypes	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
curses	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
dbm	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
distutils	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
email	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
encodings	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
ensurepip	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
html	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
http	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
idlelib	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
importlib	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
json	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
lib-dynload	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
lib2to3	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
logging	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
multiprocessing	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
plat-linux	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
pydoc_data	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
site-packages	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
sqlite3	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
test	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
unittest	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
urllib	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
venv	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
wsgiref	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
xml	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
xmlrpc	[ DIR ]	drwxr-xr-x	2024-08-18 01:01
__future__.py	4.73 KB	-rw-r--r--	2024-05-31 09:50
__phello__.foo.py	64 B	-rw-r--r--	2024-05-31 09:50
_bootlocale.py	1.27 KB	-rw-r--r--	2024-05-31 09:50
_collections_abc.py	24.21 KB	-rw-r--r--	2024-05-31 09:50
_compat_pickle.py	8.36 KB	-rw-r--r--	2024-05-31 09:50
_compression.py	5.21 KB	-rw-r--r--	2024-05-31 09:50
_dummy_thread.py	5 KB	-rw-r--r--	2024-05-31 09:50
_markupbase.py	14.26 KB	-rw-r--r--	2024-05-31 09:50
_osx_support.py	18.67 KB	-rw-r--r--	2024-05-31 09:50
_pydecimal.py	223.27 KB	-rw-r--r--	2024-05-31 09:50
_pyio.py	85.91 KB	-rw-r--r--	2024-05-31 09:50
_sitebuiltins.py	3.04 KB	-rw-r--r--	2024-05-31 09:50
_strptime.py	21.67 KB	-rw-r--r--	2024-05-31 09:50
_sysconfigdata.py	22.78 KB	-rw-r--r--	2024-05-31 09:50
_threading_local.py	7.24 KB	-rw-r--r--	2024-05-31 09:50
_weakrefset.py	5.57 KB	-rw-r--r--	2024-05-31 09:50
abc.py	8.43 KB	-rw-r--r--	2024-05-31 09:50
aifc.py	31.22 KB	-rw-r--r--	2024-05-31 09:50
antigravity.py	476 B	-rw-r--r--	2024-05-31 09:50
argparse.py	88.03 KB	-rw-r--r--	2024-05-31 09:50
ast.py	11.72 KB	-rw-r--r--	2024-05-31 09:50
asynchat.py	11.69 KB	-rw-r--r--	2024-05-31 09:50
asyncore.py	19.63 KB	-rw-r--r--	2024-05-31 09:50
base64.py	20.04 KB	-rwxr-xr-x	2024-05-31 09:50
bdb.py	22.81 KB	-rw-r--r--	2024-05-31 09:50
binhex.py	13.63 KB	-rw-r--r--	2024-05-31 09:50
bisect.py	2.53 KB	-rw-r--r--	2024-05-31 09:50
bz2.py	12.13 KB	-rw-r--r--	2024-05-31 09:50
cProfile.py	5.2 KB	-rwxr-xr-x	2024-05-31 09:50
calendar.py	22.46 KB	-rw-r--r--	2024-05-31 09:50
cgi.py	35.2 KB	-rwxr-xr-x	2024-05-31 09:50
cgitb.py	11.74 KB	-rw-r--r--	2024-05-31 09:50
chunk.py	5.3 KB	-rw-r--r--	2024-05-31 09:50
cmd.py	14.51 KB	-rw-r--r--	2024-05-31 09:50
code.py	9.88 KB	-rw-r--r--	2024-05-31 09:50
codecs.py	35.38 KB	-rw-r--r--	2024-05-31 09:50
codeop.py	5.85 KB	-rw-r--r--	2024-05-31 09:50
colorsys.py	3.97 KB	-rw-r--r--	2024-05-31 09:50
compileall.py	11.44 KB	-rw-r--r--	2024-05-31 09:50
configparser.py	52.2 KB	-rw-r--r--	2024-05-31 09:50
contextlib.py	12.16 KB	-rw-r--r--	2024-05-31 09:50
copy.py	8.74 KB	-rw-r--r--	2024-05-31 09:50
copyreg.py	6.67 KB	-rw-r--r--	2024-05-31 09:50
crypt.py	1.83 KB	-rw-r--r--	2024-05-31 09:50
csv.py	15.75 KB	-rw-r--r--	2024-05-31 09:50
datetime.py	74.12 KB	-rw-r--r--	2024-05-31 09:50
decimal.py	320 B	-rw-r--r--	2024-05-31 09:50
difflib.py	82.23 KB	-rw-r--r--	2024-05-31 09:50
dis.py	16.94 KB	-rw-r--r--	2024-05-31 09:50
doctest.py	101.6 KB	-rw-r--r--	2024-05-31 09:50
dummy_threading.py	2.75 KB	-rw-r--r--	2024-05-31 09:50
enum.py	21.71 KB	-rw-r--r--	2024-05-31 09:50
filecmp.py	9.6 KB	-rw-r--r--	2024-05-31 09:50
fileinput.py	13.92 KB	-rw-r--r--	2024-05-31 09:50
fnmatch.py	3.09 KB	-rw-r--r--	2024-05-31 09:50
formatter.py	14.79 KB	-rw-r--r--	2024-05-31 09:50
fractions.py	24.04 KB	-rw-r--r--	2024-05-31 09:50
ftplib.py	34.13 KB	-rw-r--r--	2024-05-31 09:50
functools.py	28.27 KB	-rw-r--r--	2024-05-31 09:50
genericpath.py	4.26 KB	-rw-r--r--	2024-05-31 09:50
getopt.py	7.31 KB	-rw-r--r--	2024-05-31 09:50
getpass.py	5.85 KB	-rw-r--r--	2024-05-31 09:50
gettext.py	21.03 KB	-rw-r--r--	2024-05-31 09:50
glob.py	4.95 KB	-rw-r--r--	2024-05-31 09:50
gzip.py	19.79 KB	-rw-r--r--	2024-05-31 09:50
hashlib.py	7.79 KB	-rw-r--r--	2024-05-31 09:50
heapq.py	22.39 KB	-rw-r--r--	2024-05-31 09:50
hmac.py	4.94 KB	-rw-r--r--	2024-05-31 09:50
imaplib.py	50.96 KB	-rw-r--r--	2024-05-31 09:50
imghdr.py	3.67 KB	-rw-r--r--	2024-05-31 09:50
imp.py	10.43 KB	-rw-r--r--	2024-05-31 09:50
inspect.py	111.52 KB	-rw-r--r--	2024-05-31 09:50
io.py	3.32 KB	-rw-r--r--	2024-05-31 09:50
ipaddress.py	73.96 KB	-rw-r--r--	2024-05-31 09:50
keyword.py	2.17 KB	-rwxr-xr-x	2024-05-31 09:50
linecache.py	5.19 KB	-rw-r--r--	2024-05-31 09:50
locale.py	72.96 KB	-rw-r--r--	2024-05-31 09:50
lzma.py	12.62 KB	-rw-r--r--	2024-05-31 09:50
macpath.py	5.77 KB	-rw-r--r--	2024-05-31 09:50
macurl2path.py	2.67 KB	-rw-r--r--	2024-05-31 09:50
mailbox.py	76.58 KB	-rw-r--r--	2024-05-31 09:50
mailcap.py	7.91 KB	-rw-r--r--	2024-05-31 09:50
mimetypes.py	20.36 KB	-rw-r--r--	2024-05-31 09:50
modulefinder.py	22.54 KB	-rw-r--r--	2024-05-31 09:50
netrc.py	5.61 KB	-rw-r--r--	2024-05-31 09:50
nntplib.py	42.07 KB	-rw-r--r--	2024-05-31 09:50
ntpath.py	22.26 KB	-rw-r--r--	2024-05-31 09:50
nturl2path.py	2.39 KB	-rw-r--r--	2024-05-31 09:50
numbers.py	10 KB	-rw-r--r--	2024-05-31 09:50
opcode.py	5.75 KB	-rw-r--r--	2024-05-31 09:50
operator.py	10.61 KB	-rw-r--r--	2024-05-31 09:50
optparse.py	58.93 KB	-rw-r--r--	2024-05-31 09:50
os.py	36.17 KB	-rw-r--r--	2024-05-31 09:50
pathlib.py	45.9 KB	-rw-r--r--	2024-05-31 09:50
pdb.py	59.72 KB	-rwxr-xr-x	2024-05-31 09:50
pickle.py	54.86 KB	-rw-r--r--	2024-05-31 09:50
pickletools.py	89.61 KB	-rw-r--r--	2024-05-31 09:50
pipes.py	8.71 KB	-rw-r--r--	2024-05-31 09:50
pkgutil.py	20.85 KB	-rw-r--r--	2024-05-31 09:50
platform.py	45.07 KB	-rwxr-xr-x	2024-05-31 09:50
plistlib.py	31.06 KB	-rw-r--r--	2024-05-31 09:50
poplib.py	14.37 KB	-rw-r--r--	2024-05-31 09:50
posixpath.py	14.56 KB	-rw-r--r--	2024-05-31 09:50
pprint.py	20.37 KB	-rw-r--r--	2024-05-31 09:50
profile.py	21.52 KB	-rwxr-xr-x	2024-05-31 09:50
pstats.py	25.94 KB	-rw-r--r--	2024-05-31 09:50
pty.py	4.65 KB	-rw-r--r--	2024-05-31 09:50
py_compile.py	7.01 KB	-rw-r--r--	2024-05-31 09:50
pyclbr.py	13.25 KB	-rw-r--r--	2024-05-31 09:50
pydoc.py	101.22 KB	-rwxr-xr-x	2024-05-31 09:50
queue.py	8.57 KB	-rw-r--r--	2024-05-31 09:50
quopri.py	7.09 KB	-rwxr-xr-x	2024-05-31 09:50
random.py	25.84 KB	-rw-r--r--	2024-05-31 09:50
re.py	15.14 KB	-rw-r--r--	2024-05-31 09:50
reprlib.py	5.21 KB	-rw-r--r--	2024-05-31 09:50
rlcompleter.py	6.16 KB	-rw-r--r--	2024-05-31 09:50
runpy.py	11.68 KB	-rw-r--r--	2024-05-31 09:50
sched.py	6.07 KB	-rw-r--r--	2024-05-31 09:50
selectors.py	18.98 KB	-rw-r--r--	2024-05-31 09:50
shelve.py	8.33 KB	-rw-r--r--	2024-05-31 09:50
shlex.py	11.18 KB	-rw-r--r--	2024-05-31 09:50
shutil.py	39.11 KB	-rw-r--r--	2024-05-31 09:50
signal.py	2.07 KB	-rw-r--r--	2024-05-31 09:50
site.py	21 KB	-rw-r--r--	2024-05-31 09:50
smtpd.py	34.54 KB	-rwxr-xr-x	2024-05-31 09:50
smtplib.py	42.61 KB	-rwxr-xr-x	2024-05-31 09:50
sndhdr.py	6.27 KB	-rw-r--r--	2024-05-31 09:50
socket.py	26.5 KB	-rw-r--r--	2024-05-31 09:50
socketserver.py	24.09 KB	-rw-r--r--	2024-05-31 09:50
sre_compile.py	17.98 KB	-rw-r--r--	2024-05-31 09:50
sre_constants.py	6.66 KB	-rw-r--r--	2024-05-31 09:50
sre_parse.py	34.29 KB	-rw-r--r--	2024-05-31 09:50
ssl.py	41.36 KB	-rw-r--r--	2024-05-31 09:50
stat.py	4.92 KB	-rw-r--r--	2024-05-31 09:50
statistics.py	19.08 KB	-rw-r--r--	2024-05-31 09:50
string.py	11.58 KB	-rw-r--r--	2024-05-31 09:50
stringprep.py	12.61 KB	-rw-r--r--	2024-05-31 09:50
struct.py	257 B	-rw-r--r--	2024-05-31 09:50
subprocess.py	57.53 KB	-rw-r--r--	2024-05-31 09:50
sunau.py	17.67 KB	-rw-r--r--	2024-05-31 09:50
symbol.py	2.06 KB	-rwxr-xr-x	2024-05-31 09:50
symtable.py	7.02 KB	-rw-r--r--	2024-05-31 09:50
sysconfig.py	23.89 KB	-rw-r--r--	2024-05-31 09:50
tabnanny.py	11.15 KB	-rwxr-xr-x	2024-05-31 09:50
tarfile.py	90.89 KB	-rwxr-xr-x	2024-05-31 09:50
telnetlib.py	22.48 KB	-rw-r--r--	2024-05-31 09:50
tempfile.py	26.01 KB	-rw-r--r--	2024-05-31 09:50
textwrap.py	19.1 KB	-rw-r--r--	2024-05-31 09:50
this.py	1003 B	-rw-r--r--	2024-05-31 09:50
threading.py	47.88 KB	-rw-r--r--	2024-05-31 09:50
timeit.py	12.11 KB	-rwxr-xr-x	2024-05-31 09:50
token.py	3 KB	-rw-r--r--	2024-05-31 09:50
tokenize.py	27.14 KB	-rw-r--r--	2024-05-31 09:50
trace.py	30.81 KB	-rwxr-xr-x	2024-05-31 09:50
traceback.py	21.66 KB	-rw-r--r--	2024-05-31 09:50
tracemalloc.py	15.27 KB	-rw-r--r--	2024-05-31 09:50
tty.py	879 B	-rw-r--r--	2024-05-31 09:50
types.py	8.59 KB	-rw-r--r--	2024-05-31 09:50
typing.py	78.26 KB	-rw-r--r--	2024-05-31 09:50
uu.py	6.61 KB	-rwxr-xr-x	2024-05-31 09:50
uuid.py	22.72 KB	-rw-r--r--	2024-05-31 09:50
warnings.py	15.48 KB	-rw-r--r--	2024-05-31 09:50
wave.py	17.27 KB	-rw-r--r--	2024-05-31 09:50
weakref.py	19.99 KB	-rw-r--r--	2024-05-31 09:50
webbrowser.py	21.32 KB	-rwxr-xr-x	2024-05-31 09:50
xdrlib.py	5.77 KB	-rw-r--r--	2024-05-31 09:50
zipapp.py	6.99 KB	-rw-r--r--	2024-05-31 09:50
zipfile.py	71.95 KB	-rw-r--r--	2024-05-31 09:50

Rename

"""Conversion functions between RGB and other color systems.

This modules provides two functions for each color system ABC:

rgb_to_abc(r, g, b) --> a, b, c
  abc_to_rgb(a, b, c) --> r, g, b

All inputs and outputs are triples of floats in the range [0.0...1.0]
(with the exception of I and Q, which covers a slightly larger range).
Inputs outside the valid range may cause exceptions or invalid outputs.

Supported color systems:
RGB: Red, Green, Blue components
YIQ: Luminance, Chrominance (used by composite video signals)
HLS: Hue, Luminance, Saturation
HSV: Hue, Saturation, Value
"""

# References:
# http://en.wikipedia.org/wiki/YIQ
# http://en.wikipedia.org/wiki/HLS_color_space
# http://en.wikipedia.org/wiki/HSV_color_space

__all__ = ["rgb_to_yiq","yiq_to_rgb","rgb_to_hls","hls_to_rgb",
           "rgb_to_hsv","hsv_to_rgb"]

# Some floating point constants

ONE_THIRD = 1.0/3.0
ONE_SIXTH = 1.0/6.0
TWO_THIRD = 2.0/3.0

# YIQ: used by composite video signals (linear combinations of RGB)
# Y: perceived grey level (0.0 == black, 1.0 == white)
# I, Q: color components
#
# There are a great many versions of the constants used in these formulae.
# The ones in this library uses constants from the FCC version of NTSC.

def rgb_to_yiq(r, g, b):
    y = 0.30*r + 0.59*g + 0.11*b
    i = 0.74*(r-y) - 0.27*(b-y)
    q = 0.48*(r-y) + 0.41*(b-y)
    return (y, i, q)

def yiq_to_rgb(y, i, q):
    # r = y + (0.27*q + 0.41*i) / (0.74*0.41 + 0.27*0.48)
    # b = y + (0.74*q - 0.48*i) / (0.74*0.41 + 0.27*0.48)
    # g = y - (0.30*(r-y) + 0.11*(b-y)) / 0.59

r = y + 0.9468822170900693*i + 0.6235565819861433*q
    g = y - 0.27478764629897834*i - 0.6356910791873801*q
    b = y - 1.1085450346420322*i + 1.7090069284064666*q

if r < 0.0:
        r = 0.0
    if g < 0.0:
        g = 0.0
    if b < 0.0:
        b = 0.0
    if r > 1.0:
        r = 1.0
    if g > 1.0:
        g = 1.0
    if b > 1.0:
        b = 1.0
    return (r, g, b)

# HLS: Hue, Luminance, Saturation
# H: position in the spectrum
# L: color lightness
# S: color saturation

def rgb_to_hls(r, g, b):
    maxc = max(r, g, b)
    minc = min(r, g, b)
    # XXX Can optimize (maxc+minc) and (maxc-minc)
    l = (minc+maxc)/2.0
    if minc == maxc:
        return 0.0, l, 0.0
    if l <= 0.5:
        s = (maxc-minc) / (maxc+minc)
    else:
        s = (maxc-minc) / (2.0-maxc-minc)
    rc = (maxc-r) / (maxc-minc)
    gc = (maxc-g) / (maxc-minc)
    bc = (maxc-b) / (maxc-minc)
    if r == maxc:
        h = bc-gc
    elif g == maxc:
        h = 2.0+rc-bc
    else:
        h = 4.0+gc-rc
    h = (h/6.0) % 1.0
    return h, l, s

def hls_to_rgb(h, l, s):
    if s == 0.0:
        return l, l, l
    if l <= 0.5:
        m2 = l * (1.0+s)
    else:
        m2 = l+s-(l*s)
    m1 = 2.0*l - m2
    return (_v(m1, m2, h+ONE_THIRD), _v(m1, m2, h), _v(m1, m2, h-ONE_THIRD))

def _v(m1, m2, hue):
    hue = hue % 1.0
    if hue < ONE_SIXTH:
        return m1 + (m2-m1)*hue*6.0
    if hue < 0.5:
        return m2
    if hue < TWO_THIRD:
        return m1 + (m2-m1)*(TWO_THIRD-hue)*6.0
    return m1

# HSV: Hue, Saturation, Value
# H: position in the spectrum
# S: color saturation ("purity")
# V: color brightness

def rgb_to_hsv(r, g, b):
    maxc = max(r, g, b)
    minc = min(r, g, b)
    v = maxc
    if minc == maxc:
        return 0.0, 0.0, v
    s = (maxc-minc) / maxc
    rc = (maxc-r) / (maxc-minc)
    gc = (maxc-g) / (maxc-minc)
    bc = (maxc-b) / (maxc-minc)
    if r == maxc:
        h = bc-gc
    elif g == maxc:
        h = 2.0+rc-bc
    else:
        h = 4.0+gc-rc
    h = (h/6.0) % 1.0
    return h, s, v

def hsv_to_rgb(h, s, v):
    if s == 0.0:
        return v, v, v
    i = int(h*6.0) # XXX assume int() truncates!
    f = (h*6.0) - i
    p = v*(1.0 - s)
    q = v*(1.0 - s*f)
    t = v*(1.0 - s*(1.0-f))
    i = i%6
    if i == 0:
        return v, t, p
    if i == 1:
        return q, v, p
    if i == 2:
        return p, v, t
    if i == 3:
        return p, q, v
    if i == 4:
        return t, p, v
    if i == 5:
        return v, p, q
    # Cannot get here