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poezio
poezio
Commits
07606b0c
Commit
07606b0c
authored
Feb 14, 2019
by
Jonas Schäfer
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Embed hsluv
See:
poezio/poezio!13 (comment 7453)
parent
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-1
poezio/colors.py
poezio/colors.py
+1
-1
poezio/hsluv.py
poezio/hsluv.py
+360
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poezio/colors.py
View file @
07606b0c
...
...
@@ -3,7 +3,7 @@ import curses
import
hashlib
import
math
import
hsluv
from
.
import
hsluv
Palette
=
Dict
[
float
,
int
]
...
...
poezio/hsluv.py
0 → 100644
View file @
07606b0c
# This file was taken from https://github.com/hsluv/hsluv-python
#
# Copyright (c) 2015 Alexei Boronine
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
""" This module is generated by transpiling Haxe into Python and cleaning
the resulting code by hand, e.g. removing unused Haxe classes. To try it
yourself, clone https://github.com/hsluv/hsluv and run:
haxe -cp haxe/src hsluv.Hsluv -python hsluv.py
"""
import
math
__version__
=
'0.0.2'
m
=
[[
3.240969941904521
,
-
1.537383177570093
,
-
0.498610760293
],
[
-
0.96924363628087
,
1.87596750150772
,
0.041555057407175
],
[
0.055630079696993
,
-
0.20397695888897
,
1.056971514242878
]]
minv
=
[[
0.41239079926595
,
0.35758433938387
,
0.18048078840183
],
[
0.21263900587151
,
0.71516867876775
,
0.072192315360733
],
[
0.019330818715591
,
0.11919477979462
,
0.95053215224966
]]
refY
=
1.0
refU
=
0.19783000664283
refV
=
0.46831999493879
kappa
=
903.2962962
epsilon
=
0.0088564516
hex_chars
=
"0123456789abcdef"
def
_distance_line_from_origin
(
line
):
v
=
math
.
pow
(
line
[
'slope'
],
2
)
+
1
return
math
.
fabs
(
line
[
'intercept'
])
/
math
.
sqrt
(
v
)
def
_length_of_ray_until_intersect
(
theta
,
line
):
return
line
[
'intercept'
]
/
(
math
.
sin
(
theta
)
-
line
[
'slope'
]
*
math
.
cos
(
theta
))
def
_get_bounds
(
l
):
result
=
[]
sub1
=
math
.
pow
(
l
+
16
,
3
)
/
1560896
if
sub1
>
epsilon
:
sub2
=
sub1
else
:
sub2
=
l
/
kappa
_g
=
0
while
_g
<
3
:
c
=
_g
_g
=
_g
+
1
m1
=
m
[
c
][
0
]
m2
=
m
[
c
][
1
]
m3
=
m
[
c
][
2
]
_g1
=
0
while
_g1
<
2
:
t
=
_g1
_g1
=
_g1
+
1
top1
=
(
284517
*
m1
-
94839
*
m3
)
*
sub2
top2
=
(
838422
*
m3
+
769860
*
m2
+
731718
*
m1
)
*
l
*
sub2
-
(
769860
*
t
)
*
l
bottom
=
(
632260
*
m3
-
126452
*
m2
)
*
sub2
+
126452
*
t
result
.
append
({
'slope'
:
top1
/
bottom
,
'intercept'
:
top2
/
bottom
})
return
result
def
_max_safe_chroma_for_l
(
l
):
bounds
=
_get_bounds
(
l
)
_hx_min
=
1.7976931348623157e+308
_g
=
0
while
_g
<
2
:
i
=
_g
_g
=
_g
+
1
length
=
_distance_line_from_origin
(
bounds
[
i
])
if
math
.
isnan
(
_hx_min
):
_hx_min
=
_hx_min
elif
math
.
isnan
(
length
):
_hx_min
=
length
else
:
_hx_min
=
min
(
_hx_min
,
length
)
return
_hx_min
def
_max_chroma_for_lh
(
l
,
h
):
hrad
=
h
/
360
*
math
.
pi
*
2
bounds
=
_get_bounds
(
l
)
_hx_min
=
1.7976931348623157e+308
_g
=
0
while
_g
<
len
(
bounds
):
bound
=
bounds
[
_g
]
_g
=
(
_g
+
1
)
length
=
_length_of_ray_until_intersect
(
hrad
,
bound
)
if
length
>=
0
:
if
math
.
isnan
(
_hx_min
):
_hx_min
=
_hx_min
elif
math
.
isnan
(
length
):
_hx_min
=
length
else
:
_hx_min
=
min
(
_hx_min
,
length
)
return
_hx_min
def
_dot_product
(
a
,
b
):
sum
=
0
_g1
=
0
_g
=
len
(
a
)
while
_g1
<
_g
:
i
=
_g1
_g1
=
_g1
+
1
sum
+=
a
[
i
]
*
b
[
i
]
return
sum
def
_from_linear
(
c
):
if
c
<=
0.0031308
:
return
12.92
*
c
else
:
return
1.055
*
math
.
pow
(
c
,
0.416666666666666685
)
-
0.055
def
_to_linear
(
c
):
if
c
>
0.04045
:
return
math
.
pow
((
c
+
0.055
)
/
1.055
,
2.4
)
else
:
return
c
/
12.92
def
xyz_to_rgb
(
_hx_tuple
):
return
[
_from_linear
(
_dot_product
(
m
[
0
],
_hx_tuple
)),
_from_linear
(
_dot_product
(
m
[
1
],
_hx_tuple
)),
_from_linear
(
_dot_product
(
m
[
2
],
_hx_tuple
))]
def
rgb_to_xyz
(
_hx_tuple
):
rgbl
=
[
_to_linear
(
_hx_tuple
[
0
]),
_to_linear
(
_hx_tuple
[
1
]),
_to_linear
(
_hx_tuple
[
2
])]
return
[
_dot_product
(
minv
[
0
],
rgbl
),
_dot_product
(
minv
[
1
],
rgbl
),
_dot_product
(
minv
[
2
],
rgbl
)]
def
_y_to_l
(
y
):
if
y
<=
epsilon
:
return
y
/
refY
*
kappa
else
:
return
116
*
math
.
pow
(
y
/
refY
,
0.333333333333333315
)
-
16
def
_l_to_y
(
l
):
if
l
<=
8
:
return
refY
*
l
/
kappa
else
:
return
refY
*
math
.
pow
((
l
+
16
)
/
116
,
3
)
def
xyz_to_luv
(
_hx_tuple
):
x
=
float
(
_hx_tuple
[
0
])
y
=
float
(
_hx_tuple
[
1
])
z
=
float
(
_hx_tuple
[
2
])
divider
=
x
+
15
*
y
+
3
*
z
var_u
=
4
*
x
var_v
=
9
*
y
if
divider
!=
0
:
var_u
=
var_u
/
divider
var_v
=
var_v
/
divider
else
:
var_u
=
float
(
"nan"
)
var_v
=
float
(
"nan"
)
l
=
_y_to_l
(
y
)
if
l
==
0
:
return
[
0
,
0
,
0
]
u
=
13
*
l
*
(
var_u
-
refU
)
v
=
13
*
l
*
(
var_v
-
refV
)
return
[
l
,
u
,
v
]
def
luv_to_xyz
(
_hx_tuple
):
l
=
float
(
_hx_tuple
[
0
])
u
=
float
(
_hx_tuple
[
1
])
v
=
float
(
_hx_tuple
[
2
])
if
l
==
0
:
return
[
0
,
0
,
0
]
var_u
=
u
/
(
13
*
l
)
+
refU
var_v
=
v
/
(
13
*
l
)
+
refV
y
=
_l_to_y
(
l
)
x
=
0
-
((
9
*
y
*
var_u
)
/
(((
var_u
-
4
)
*
var_v
)
-
var_u
*
var_v
))
z
=
(((
9
*
y
)
-
(
15
*
var_v
*
y
))
-
(
var_v
*
x
))
/
(
3
*
var_v
)
return
[
x
,
y
,
z
]
def
luv_to_lch
(
_hx_tuple
):
l
=
float
(
_hx_tuple
[
0
])
u
=
float
(
_hx_tuple
[
1
])
v
=
float
(
_hx_tuple
[
2
])
_v
=
(
u
*
u
)
+
(
v
*
v
)
if
_v
<
0
:
c
=
float
(
"nan"
)
else
:
c
=
math
.
sqrt
(
_v
)
if
c
<
0.00000001
:
h
=
0
else
:
hrad
=
math
.
atan2
(
v
,
u
)
h
=
hrad
*
180.0
/
3.1415926535897932
if
h
<
0
:
h
=
360
+
h
return
[
l
,
c
,
h
]
def
lch_to_luv
(
_hx_tuple
):
l
=
float
(
_hx_tuple
[
0
])
c
=
float
(
_hx_tuple
[
1
])
h
=
float
(
_hx_tuple
[
2
])
hrad
=
h
/
360.0
*
2
*
math
.
pi
u
=
math
.
cos
(
hrad
)
*
c
v
=
math
.
sin
(
hrad
)
*
c
return
[
l
,
u
,
v
]
def
hsluv_to_lch
(
_hx_tuple
):
h
=
float
(
_hx_tuple
[
0
])
s
=
float
(
_hx_tuple
[
1
])
l
=
float
(
_hx_tuple
[
2
])
if
l
>
99.9999999
:
return
[
100
,
0
,
h
]
if
l
<
0.00000001
:
return
[
0
,
0
,
h
]
_hx_max
=
_max_chroma_for_lh
(
l
,
h
)
c
=
_hx_max
/
100
*
s
return
[
l
,
c
,
h
]
def
lch_to_hsluv
(
_hx_tuple
):
l
=
float
(
_hx_tuple
[
0
])
c
=
float
(
_hx_tuple
[
1
])
h
=
float
(
_hx_tuple
[
2
])
if
l
>
99.9999999
:
return
[
h
,
0
,
100
]
if
l
<
0.00000001
:
return
[
h
,
0
,
0
]
_hx_max
=
_max_chroma_for_lh
(
l
,
h
)
s
=
c
/
_hx_max
*
100
return
[
h
,
s
,
l
]
def
hpluv_to_lch
(
_hx_tuple
):
h
=
float
(
_hx_tuple
[
0
])
s
=
float
(
_hx_tuple
[
1
])
l
=
float
(
_hx_tuple
[
2
])
if
l
>
99.9999999
:
return
[
100
,
0
,
h
]
if
l
<
0.00000001
:
return
[
0
,
0
,
h
]
_hx_max
=
_max_safe_chroma_for_l
(
l
)
c
=
_hx_max
/
100
*
s
return
[
l
,
c
,
h
]
def
lch_to_hpluv
(
_hx_tuple
):
l
=
float
(
_hx_tuple
[
0
])
c
=
float
(
_hx_tuple
[
1
])
h
=
float
(
_hx_tuple
[
2
])
if
l
>
99.9999999
:
return
[
h
,
0
,
100
]
if
l
<
0.00000001
:
return
[
h
,
0
,
0
]
_hx_max
=
_max_safe_chroma_for_l
(
l
)
s
=
c
/
_hx_max
*
100
return
[
h
,
s
,
l
]
def
rgb_to_hex
(
_hx_tuple
):
h
=
"#"
_g
=
0
while
_g
<
3
:
i
=
_g
_g
=
_g
+
1
chan
=
float
(
_hx_tuple
[
i
])
c
=
math
.
floor
(
chan
*
255
+
0.5
)
digit2
=
int
(
c
%
16
)
digit1
=
int
((
c
-
digit2
)
/
16
)
h
+=
hex_chars
[
digit1
]
+
hex_chars
[
digit2
]
return
h
def
hex_to_rgb
(
hex
):
hex
=
hex
.
lower
()
ret
=
[]
_g
=
0
while
_g
<
3
:
i
=
_g
_g
=
_g
+
1
index
=
i
*
2
+
1
_hx_str
=
hex
[
index
]
digit1
=
hex_chars
.
find
(
_hx_str
)
index1
=
i
*
2
+
2
str1
=
hex
[
index1
]
digit2
=
hex_chars
.
find
(
str1
)
n
=
digit1
*
16
+
digit2
ret
.
append
(
n
/
255.0
)
return
ret
def
lch_to_rgb
(
_hx_tuple
):
return
xyz_to_rgb
(
luv_to_xyz
(
lch_to_luv
(
_hx_tuple
)))
def
rgb_to_lch
(
_hx_tuple
):
return
luv_to_lch
(
xyz_to_luv
(
rgb_to_xyz
(
_hx_tuple
)))
def
hsluv_to_rgb
(
_hx_tuple
):
return
lch_to_rgb
(
hsluv_to_lch
(
_hx_tuple
))
def
rgb_to_hsluv
(
_hx_tuple
):
return
lch_to_hsluv
(
rgb_to_lch
(
_hx_tuple
))
def
hpluv_to_rgb
(
_hx_tuple
):
return
lch_to_rgb
(
hpluv_to_lch
(
_hx_tuple
))
def
rgb_to_hpluv
(
_hx_tuple
):
return
lch_to_hpluv
(
rgb_to_lch
(
_hx_tuple
))
def
hsluv_to_hex
(
_hx_tuple
):
return
rgb_to_hex
(
hsluv_to_rgb
(
_hx_tuple
))
def
hpluv_to_hex
(
_hx_tuple
):
return
rgb_to_hex
(
hpluv_to_rgb
(
_hx_tuple
))
def
hex_to_hsluv
(
s
):
return
rgb_to_hsluv
(
hex_to_rgb
(
s
))
def
hex_to_hpluv
(
s
):
return
rgb_to_hpluv
(
hex_to_rgb
(
s
))
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