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migurski/gist:24ae6088b6667d3cacdb2563ff58a914

Created May 1, 2022 20:58
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d-parser.py
Raw
gistfile1.txt
import re
import cairo
import bezier
import numpy
import itertools
# https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d#path
paths = [
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t57.5 -66.5l294 -364q19 -24 16 -50.5t-28 -43.5q-185 -123 -349 -183t-304 -60zM858 409q-29 0 -50.5 21.5t-21.5 50.5q0 30 21.5 51t50.5 21q30 0 51 -21t21 -51q0 -29 -21 -50.5t-51 -21.5zM1198 259q-29 0 -50.5 21.5t-21.5 50.5q0 30 21.5 51t50.5 21q30 0 51 -21
t21 -51q0 -29 -21 -50.5t-51 -21.5zM1578 138q-29 0 -50.5 21.5t-21.5 50.5q0 30 21 51t51 21t51 -21t21 -51q0 -29 -21 -50.5t-51 -21.5zM2266 225q-182 0 -437.5 61t-551.5 167q-213 77 -399.5 157.5t-331 162t-233.5 158.5l49 76q91 -81 242 -164.5t334 -161t369 -144.5
q280 -99 534 -160.5t438 -61.5zM1644 48q123 0 266.5 53t309.5 160l-270 338q-36 44 -73.5 81t-80.5 70l23 59q15 40 23.5 79t8.5 77q0 108 -52 196.5t-140 141t-195 52.5q-138 0 -242.5 -78.5t-135.5 -212.5l-12 -50q-58 0 -111 -4t-111 -12l-477 -71q52 -160 120 -279
t161 -208t219.5 -158.5t297.5 -131.5q144 -52 258.5 -77t212.5 -25zM1852 756q-24 -11 -57.5 -16t-73.5 -5q-87 0 -186.5 23t-196.5 64.5t-176 97t-125 121.5l13 49q20 5 43.5 8t34.5 3q94 0 207 -28.5t221 -74t189.5 -97t111.5 -98.5zM1494 941l-69 25l45 127q7 19 -2.5 34
t-17.5 34.5t3 49.5q11 32 45.5 45.5t70.5 -0.5q37 -13 55 -45t5 -65q-11 -29 -29.5 -39t-36 -15.5t-24.5 -25.5z''',
'''M741 123q-137 0 -254.5 34t-205 92t-136.5 132t-49 152q0 82 56.5 135.5t140.5 53.5q55 0 101 7t70 18l1141 548q18 9 40 27t48 42q100 91 208.5 135t212.5 44q118 0 205.5 -49.5t136 -135.5t48.5 -195q0 -73 -22 -144.5t-63 -126.5t-95 -81l-1278 -616
q-71 -34 -145.5 -53t-159.5 -19zM577 65q-54 0 -115.5 45.5t-81.5 113.5l371 -62q-27 -44 -73 -70.5t-101 -26.5zM883 93l-83 50l107 34zM1073 -143q-85 0 -145 60.5t-60 145.5t60 145t145 60q86 0 145.5 -60t59.5 -145t-59.5 -145.5t-145.5 -60.5zM1131 -31q26 0 45 19.5
t19 45.5t-19 45t-45 19t-45.5 -19t-19.5 -45q0 -27 19 -46t46 -19zM638 530q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5zM815 426q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5z
M821 614q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5zM993 510q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5zM726 219q79 0 139.5 15t124.5 45l1283 619q40 19 70 62t47 98.5
t17 111.5q0 130 -81.5 206.5t-211.5 76.5q-88 0 -182.5 -39.5t-175.5 -114.5q-35 -32 -61.5 -52.5t-49.5 -31.5l-1142 -549q-33 -16 -87 -25t-117 -9q-48 0 -80.5 -25t-32.5 -69q0 -56 44 -112.5t120.5 -103.5t173.5 -75t202 -28zM1608 1010q-20 0 -34 12t-14 29q0 32 41 32
q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5zM1785 906q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5zM2164 406q-86 0 -146 60t-60 146q0 85 60 145t146 60q85 0 145.5 -60t60.5 -145q0 -86 -60.5 -146t-145.5 -60z
M2221 518q26 0 45 19.5t19 45.5t-19 45t-45 19t-45.5 -19t-19.5 -45q0 -27 19 -46t46 -19zM1791 1094q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5q0 -14 -12 -24.5t-29 -10.5zM1963 990q-20 0 -34 12t-14 29q0 32 41 32q19 0 33.5 -11.5t14.5 -26.5
q0 -14 -12 -24.5t-29 -10.5z''',
'''M1653 -9q2 27 5.5 54t9.5 54l-1050 5l-185 106q-91 0 -168.5 -18.5t-157.5 -53.5q0 71 22 142.5t92 114.5q-25 13 -44 46.5t-19 88.5q0 65 31 102t78 37q50 0 93 -26t70 -59.5t27 -58.5q0 -21 -17 -43.5t-40.5 -40.5t-41.5 -26q45 0 91 -10t86 -31l46 42
q-49 72 -77.5 171.5t-28.5 199.5q0 162 33.5 305.5t109.5 312.5l-182 168q-35 32 -52 58t-17 49q0 32 25.5 47.5t71.5 15.5h485q44 0 85 -81h1063q89 0 159.5 -40.5t114.5 -109t53 -151.5l67 -577q7 -59 -17 -101v-692h-159l-192 196h-170l-172 -196h-128zM477 -343
q-81 0 -148 39.5t-106.5 105.5t-39.5 147q0 82 39.5 148.5t106.5 106t148 39.5t147 -39.5t105.5 -106t39.5 -148.5q0 -81 -39.5 -147t-105.5 -105.5t-147 -39.5zM477 -243q80 0 136 56.5t56 135.5q0 81 -56 137.5t-136 56.5q-81 0 -137.5 -57t-56.5 -137q0 -79 56.5 -135.5
t137.5 -56.5zM265 450q19 0 33 23t14 56q0 32 -14 55t-33 23t-33 -23t-14 -55q0 -33 14 -56t33 -23zM501 870v74h271q28 0 28 28v387h73v-391q0 -54 -21.5 -76t-54.5 -22h-296zM1072 192h162v271q0 26 4 42t13 35h-75q-15 33 -15 64q0 32 15 63h306v88h90v-563h184v363
q0 41 21 82.5t61 70t94 28.5h436q21 0 27.5 11.5t2.5 41.5l-65 558q-7 67 -43 118t-87 79.5t-106 28.5h-1115q-12 38 -31.5 60t-37.5 22h-336l17 26l279 -255v-67h-180q-47 -118 -74 -205.5t-37.5 -168.5t-10.5 -180q0 -33 3 -70h498v-543zM1482 638v657h-410v-639h-90v727
h971q26 0 43.5 -17.5t17.5 -43.5v-660h-90v602q0 31 -31 31h-321v-657h-90zM2057 -343q-81 0 -148 39.5t-106.5 105.5t-39.5 147q0 82 39.5 148.5t106.5 106t148 39.5t147 -39.5t105.5 -106t39.5 -148.5q0 -81 -39.5 -147t-105.5 -105.5t-147 -39.5zM2057 -243
q80 0 136 56.5t56 135.5q0 81 -56 137.5t-136 56.5q-81 0 -137.5 -57t-56.5 -137q0 -79 56.5 -135.5t137.5 -56.5zM1976 504h281v105h-281v-105z''',
'''M118 127q-25 0 -42 17.5t-17 42.5v122q0 29 18 39t52 10h232l49 55q25 27 62 27h314q22 0 37 -9.5t28 -26.5l151 -189h685l87 173q27 53 79 53h525q2 32 2.5 69t0.5 76q0 64 -2 129.5t-7 121.5q-2 24 -26 24l-886 2v90l904 -2q38 0 65.5 -22.5t31.5 -60.5
q9 -79 13.5 -157t4.5 -156q0 -45 -1 -90t-4 -89q67 0 67 -60v-129q0 -25 -16.5 -42.5t-42.5 -17.5h-210l-170 203h-167l-153 -203h-913l-143 201l-187 1l-154 -202h-267zM625 -143q-75 0 -137.5 37t-99.5 99.5t-37 137.5q0 76 37 138.5t99.5 99.5t137.5 37q76 0 138.5 -37
t99.5 -99.5t37 -138.5q0 -75 -37 -137.5t-99.5 -99.5t-138.5 -37zM625 -43q72 0 123.5 51.5t51.5 122.5q0 72 -51.5 123.5t-123.5 51.5t-123 -51.5t-51 -123.5q0 -71 51 -122.5t123 -51.5zM181 457v71h93q11 0 17 6t6 17v123l-33 67l-88 9l5 71l129 -13l58 -118v-164
q0 -69 -50 -69h-137zM1382 199v1236q0 20 -20 20h-362q-56 0 -105.5 -30t-74.5 -78l-240 -466h-342q-39 0 -42 -39q-3 -38 -3.5 -84.5t-0.5 -97.5q0 -71 5.5 -153.5t16.5 -159.5l-91 -7q-12 81 -18.5 160.5t-6.5 159.5q0 55 1.5 109t5.5 109q3 38 28.5 65t65.5 27h325
l216 421q37 71 107 111.5t151 40.5h414q26 0 44.5 -16.5t18.5 -43.5v-1284h-93zM724 865q-14 0 -21 11.5t0 24.5l203 390q15 29 42.5 46.5t59.5 17.5h234q17 0 29 -13t12 -30v-406q0 -17 -12.5 -29t-29.5 -12h-517zM857 947h321q22 0 22 23v280q0 23 -22 23h-160
q-28 0 -42 -28l-138 -265q-6 -11 -0.5 -22t19.5 -11zM2020 -143q-75 0 -137.5 37t-99.5 99.5t-37 137.5q0 76 36.5 138.5t99 99.5t138.5 37q75 0 137.5 -37t100 -99.5t37.5 -138.5q0 -75 -37 -137.5t-99.5 -99.5t-138.5 -37zM2020 -43q72 0 123.5 51.5t51.5 122.5
q0 72 -51.5 123.5t-123.5 51.5q-71 0 -122.5 -51.5t-51.5 -123.5q0 -71 51.5 -122.5t122.5 -51.5zM2331 518q-17 0 -29 12t-12 29v172q0 17 12 28t29 11h82v-252h-82z''',
]
num = r'-?\d+(?:\.\d+(?:e-?\d+)?)?' # Any kind of integer or float
br = r'[,\s]+' # comma or space between numbers
breaker = re.compile(br)
command_pat = re.compile(
rf'''
(
( [Zz] )
|
( [HhVv] (\s*{num})+ )
|
( [MmLlTt] (\s*{num}{br}{num})+ )
|
( [SsQq] (\s*{num}{br}{num}{br}{num}{br}{num})+ )
|
( [Cc] (\s*{num}{br}{num}{br}{num}{br}{num}{br}{num}{br}{num})+ )
|
( [Aa] (\s*{num}{br}{num}{br}{num}{br}{num}{br}{num}{br}{num}{br}{num})+ )
)
''',
re.VERBOSE,
)
width, height = 8.5*72, 11*72
positions = itertools.product(
range(int(.5*72), int(height), int(1*72)),
range(int(.5*72), int(width), int(1*72)),
)
scale = .025
with cairo.SVGSurface('d-parsed.svg', width, height) as surface:
context = cairo.Context(surface)
context.set_line_width(.5)
for path in paths:
offy, offx = next(positions)
context.translate(offx, offy)
context.move_to(0, 0)
context.line_to(4, 0)
context.line_to(0, 4)
context.line_to(0, 0)
context.set_source_rgb(0, .6, 1)
context.fill()
context.translate(0, 72)
context.scale(scale, -scale)
print(path)
letters = re.findall('[a-zA-Z]', path)
matches = [
m[0]
for m in command_pat.findall(path)
]
assert len(letters) == len(matches), f'{len(letters)} != {len(matches)}'
start_point, prev_command = None, None
for curr_match in matches:
command, xys = curr_match[0], [float(a) for a in breaker.split(curr_match[1:]) if a]
print(command, xys)
if command == 'M':
context.move_to(xys[0], xys[1])
start_point = context.get_current_point()
if len(xys) > 2:
raise NotImplementedError('M: Any subsequent coordinate pair(s) are interpreted as parameter(s) for implicit absolute LineTo (L) command(s)')
elif command == 'm':
context.rel_move_to(xys[0], xys[1])
start_point = context.get_current_point()
if len(xys) > 2:
raise NotImplementedError('m: Any subsequent coordinate pair(s) are interpreted as parameter(s) for implicit relative LineTo (l) command(s)')
elif command == 'L':
context.line_to(xys[0], xys[1])
if len(xys) > 2:
raise NotImplementedError('L: Any subsequent coordinate pair(s) are interpreted as parameter(s) for implicit absolute LineTo (L) command(s)')
elif command == 'l':
context.rel_line_to(xys[0], xys[1])
if len(xys) > 2:
raise NotImplementedError('l: Any subsequent coordinate pair(s) are interpreted as parameter(s) for implicit relative LineTo (l) command(s)')
elif command == 'H':
_, y = context.get_current_point()
context.line_to(xys[0], y)
if len(xys) > 1:
raise NotImplementedError('H: Any subsequent value(s) are interpreted as parameter(s) for implicit absolute horizontal LineTo (H) command(s)')
elif command == 'h':
context.rel_line_to(xys[0], 0)
if len(xys) > 1:
raise NotImplementedError('h: Any subsequent value(s) are interpreted as parameter(s) for implicit relative horizontal LineTo (h) command(s)')
elif command == 'V':
x, _ = context.get_current_point()
context.line_to(x, xys[0])
if len(xys) > 1:
raise NotImplementedError('V: Any subsequent values are interpreted as parameters for implicit absolute vertical LineTo (V) command(s)')
elif command == 'v':
context.rel_line_to(0, xys[0])
if len(xys) > 1:
raise NotImplementedError('v: Any subsequent value(s) are interpreted as parameter(s) for implicit relative vertical LineTo (v) command(s)')
elif command == 'C':
x, y = context.get_current_point()
nodes = numpy.array([
(x, y),
(xys[0], xys[1]),
(xys[2], xys[3]),
(xys[4], xys[5]),
])
curve = bezier.Curve.from_nodes(nodes.transpose())
range = numpy.linspace(0, 1, int(curve.length / 10) + 2)
points = curve.evaluate_multi(range).transpose()
for (x, y) in points[1:]:
context.line_to(x, y)
if len(xys) > 6:
raise NotImplementedError('C: Any subsequent triplet(s) of coordinate pairs are interpreted as parameter(s) for implicit absolute cubic Bézier curve (C) command(s)')
elif command in ('q', 't'):
if command == 't':
if prev_command[0] != 'q':
raise NotImplementedError("t: If the previous command wasn't a quadratic Bézier curve, the control point is the same as the curve starting point (current point)")
command = 'q'
xys = [
# The control point is a reflection of the
# control point of the previous curve command.
prev_command[1][-2] - prev_command[1][-4],
prev_command[1][-1] - prev_command[1][-3],
xys[0],
xys[1],
]
x, y = context.get_current_point()
nodes = numpy.array([
(x, y),
(x + xys[0], y + xys[1]),
(x + xys[2], y + xys[3]),
])
curve = bezier.Curve.from_nodes(nodes.transpose())
range = numpy.linspace(0, 1, int(curve.length / 10) + 2)
points = curve.evaluate_multi(range).transpose()
for (x, y) in points[1:]:
context.line_to(x, y)
if len(xys) > 4:
raise NotImplementedError('q: Any subsequent pair(s) of coordinate pairs are interpreted as parameter(s) for implicit relative quadratic Bézier curve (q) command(s)')
elif command in ('Z', 'z'):
context.line_to(*start_point)
else:
raise NotImplementedError(f"{command}: https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d#path")
prev_command = command, xys
context.set_line_width(.5 / scale)
context.set_source_rgb(0, 0, 0)
context.set_fill_rule(cairo.FillRule.WINDING)
context.fill()
print('')
context.scale(1/scale, -1/scale)
context.translate(0, -72)
context.translate(-offx, -offy)
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