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mightyscape-1.2/extensions/fablabchemnitz/cookie_cutter/svgpath/parser.py

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added cookie_cutter extension
2022-12-06 01:25:17 +01:00
# SVG Path specification parser
import re
from . import path
import xml.etree.ElementTree as ET
import re
import math
COMMANDS = set('MmZzLlHhVvCcSsQqTtAa')
UPPERCASE = set('MZLHVCSQTA')
COMMAND_RE = re.compile("([MmZzLlHhVvCcSsQqTtAa])")
FLOAT_RE = re.compile("[-+]?[0-9]*\.?[0-9]+(?:[eE][-+]?[0-9]+)?")
SVG_COLORS = {
"aliceblue": (0.941176,0.972549,1),
"antiquewhite": (0.980392,0.921569,0.843137),
"aqua": (0,1,1),
"aquamarine": (0.498039,1,0.831373),
"azure": (0.941176,1,1),
"beige": (0.960784,0.960784,0.862745),
"bisque": (1,0.894118,0.768627),
"black": (0,0,0),
"blanchedalmond": (1,0.921569,0.803922),
"blue": (0,0,1),
"blueviolet": (0.541176,0.168627,0.886275),
"brown": (0.647059,0.164706,0.164706),
"burlywood": (0.870588,0.721569,0.529412),
"cadetblue": (0.372549,0.619608,0.627451),
"chartreuse": (0.498039,1,0),
"chocolate": (0.823529,0.411765,0.117647),
"coral": (1,0.498039,0.313725),
"cornflowerblue": (0.392157,0.584314,0.929412),
"cornsilk": (1,0.972549,0.862745),
"crimson": (0.862745,0.0784314,0.235294),
"cyan": (0,1,1),
"darkblue": (0,0,0.545098),
"darkcyan": (0,0.545098,0.545098),
"darkgoldenrod": (0.721569,0.52549,0.0431373),
"darkgray": (0.662745,0.662745,0.662745),
"darkgreen": (0,0.392157,0),
"darkgrey": (0.662745,0.662745,0.662745),
"darkkhaki": (0.741176,0.717647,0.419608),
"darkmagenta": (0.545098,0,0.545098),
"darkolivegreen": (0.333333,0.419608,0.184314),
"darkorange": (1,0.54902,0),
"darkorchid": (0.6,0.196078,0.8),
"darkred": (0.545098,0,0),
"darksalmon": (0.913725,0.588235,0.478431),
"darkseagreen": (0.560784,0.737255,0.560784),
"darkslateblue": (0.282353,0.239216,0.545098),
"darkslategray": (0.184314,0.309804,0.309804),
"darkslategrey": (0.184314,0.309804,0.309804),
"darkturquoise": (0,0.807843,0.819608),
"darkviolet": (0.580392,0,0.827451),
"deeppink": (1,0.0784314,0.576471),
"deepskyblue": (0,0.74902,1),
"dimgray": (0.411765,0.411765,0.411765),
"dimgrey": (0.411765,0.411765,0.411765),
"dodgerblue": (0.117647,0.564706,1),
"firebrick": (0.698039,0.133333,0.133333),
"floralwhite": (1,0.980392,0.941176),
"forestgreen": (0.133333,0.545098,0.133333),
"fuchsia": (1,0,1),
"gainsboro": (0.862745,0.862745,0.862745),
"ghostwhite": (0.972549,0.972549,1),
"gold": (1,0.843137,0),
"goldenrod": (0.854902,0.647059,0.12549),
"gray": (0.501961,0.501961,0.501961),
"grey": (0.501961,0.501961,0.501961),
"green": (0,0.501961,0),
"greenyellow": (0.678431,1,0.184314),
"honeydew": (0.941176,1,0.941176),
"hotpink": (1,0.411765,0.705882),
"indianred": (0.803922,0.360784,0.360784),
"indigo": (0.294118,0,0.509804),
"ivory": (1,1,0.941176),
"khaki": (0.941176,0.901961,0.54902),
"lavender": (0.901961,0.901961,0.980392),
"lavenderblush": (1,0.941176,0.960784),
"lawngreen": (0.486275,0.988235,0),
"lemonchiffon": (1,0.980392,0.803922),
"lightblue": (0.678431,0.847059,0.901961),
"lightcoral": (0.941176,0.501961,0.501961),
"lightcyan": (0.878431,1,1),
"lightgoldenrodyellow": (0.980392,0.980392,0.823529),
"lightgray": (0.827451,0.827451,0.827451),
"lightgreen": (0.564706,0.933333,0.564706),
"lightgrey": (0.827451,0.827451,0.827451),
"lightpink": (1,0.713725,0.756863),
"lightsalmon": (1,0.627451,0.478431),
"lightseagreen": (0.12549,0.698039,0.666667),
"lightskyblue": (0.529412,0.807843,0.980392),
"lightslategray": (0.466667,0.533333,0.6),
"lightslategrey": (0.466667,0.533333,0.6),
"lightsteelblue": (0.690196,0.768627,0.870588),
"lightyellow": (1,1,0.878431),
"lime": (0,1,0),
"limegreen": (0.196078,0.803922,0.196078),
"linen": (0.980392,0.941176,0.901961),
"magenta": (1,0,1),
"maroon": (0.501961,0,0),
"mediumaquamarine": (0.4,0.803922,0.666667),
"mediumblue": (0,0,0.803922),
"mediumorchid": (0.729412,0.333333,0.827451),
"mediumpurple": (0.576471,0.439216,0.858824),
"mediumseagreen": (0.235294,0.701961,0.443137),
"mediumslateblue": (0.482353,0.407843,0.933333),
"mediumspringgreen": (0,0.980392,0.603922),
"mediumturquoise": (0.282353,0.819608,0.8),
"mediumvioletred": (0.780392,0.0823529,0.521569),
"midnightblue": (0.0980392,0.0980392,0.439216),
"mintcream": (0.960784,1,0.980392),
"mistyrose": (1,0.894118,0.882353),
"moccasin": (1,0.894118,0.709804),
"navajowhite": (1,0.870588,0.678431),
"navy": (0,0,0.501961),
"oldlace": (0.992157,0.960784,0.901961),
"olive": (0.501961,0.501961,0),
"olivedrab": (0.419608,0.556863,0.137255),
"orange": (1,0.647059,0),
"orangered": (1,0.270588,0),
"orchid": (0.854902,0.439216,0.839216),
"palegoldenrod": (0.933333,0.909804,0.666667),
"palegreen": (0.596078,0.984314,0.596078),
"paleturquoise": (0.686275,0.933333,0.933333),
"palevioletred": (0.858824,0.439216,0.576471),
"papayawhip": (1,0.937255,0.835294),
"peachpuff": (1,0.854902,0.72549),
"peru": (0.803922,0.521569,0.247059),
"pink": (1,0.752941,0.796078),
"plum": (0.866667,0.627451,0.866667),
"powderblue": (0.690196,0.878431,0.901961),
"purple": (0.501961,0,0.501961),
"red": (1,0,0),
"rosybrown": (0.737255,0.560784,0.560784),
"royalblue": (0.254902,0.411765,0.882353),
"saddlebrown": (0.545098,0.270588,0.0745098),
"salmon": (0.980392,0.501961,0.447059),
"sandybrown": (0.956863,0.643137,0.376471),
"seagreen": (0.180392,0.545098,0.341176),
"seashell": (1,0.960784,0.933333),
"sienna": (0.627451,0.321569,0.176471),
"silver": (0.752941,0.752941,0.752941),
"skyblue": (0.529412,0.807843,0.921569),
"slateblue": (0.415686,0.352941,0.803922),
"slategray": (0.439216,0.501961,0.564706),
"slategrey": (0.439216,0.501961,0.564706),
"snow": (1,0.980392,0.980392),
"springgreen": (0,1,0.498039),
"steelblue": (0.27451,0.509804,0.705882),
"tan": (0.823529,0.705882,0.54902),
"teal": (0,0.501961,0.501961),
"thistle": (0.847059,0.74902,0.847059),
"tomato": (1,0.388235,0.278431),
"turquoise": (0.25098,0.878431,0.815686),
"violet": (0.933333,0.509804,0.933333),
"wheat": (0.960784,0.870588,0.701961),
"white": (1,1,1),
"whitesmoke": (0.960784,0.960784,0.960784),
"yellow": (1,1,0),
"yellowgreen": (0.603922,0.803922,0.196078),
}
def _tokenize_path(pathdef):
for x in COMMAND_RE.split(pathdef):
if x in COMMANDS:
yield x
for token in FLOAT_RE.findall(x):
yield token
def applyMatrix(matrix, z):
return complex(z.real * matrix[0] + z.imag * matrix[1] + matrix[2],
z.real * matrix[3] + z.imag * matrix[4] + matrix[5] )
def matrixMultiply(matrix1, matrix2):
if matrix1 is None:
return matrix2
elif matrix2 is None:
return matrix1
m1 = [matrix1[0:3], matrix1[3:6] ] # don't need last row
m2 = [matrix2[0:3], matrix2[3:6], [0,0,1]]
out = []
for i in range(2):
for j in range(3):
out.append( sum(m1[i][k]*m2[k][j] for k in range(3)) )
return out
def parse_path(pathdef, current_pos=0j, matrix = None, svgState=None):
if matrix is None:
scaler=lambda z : z
else:
scaler=lambda z : applyMatrix(matrix, z)
if svgState is None:
svgState = path.SVGState()
# In the SVG specs, initial movetos are absolute, even if
# specified as 'm'. This is the default behavior here as well.
# But if you pass in a current_pos variable, the initial moveto
# will be relative to that current_pos. This is useful.
elements = list(_tokenize_path(pathdef))
# Reverse for easy use of .pop()
elements.reverse()
segments = path.Path(svgState = svgState)
start_pos = None
command = None
while elements:
if elements[-1] in COMMANDS:
# New command.
last_command = command # Used by S and T
command = elements.pop()
absolute = command in UPPERCASE
command = command.upper()
else:
# If this element starts with numbers, it is an implicit command
# and we don't change the command. Check that it's allowed:
if command is None:
raise ValueError("Unallowed implicit command in %s, position %s" % (
pathdef, len(pathdef.split()) - len(elements)))
last_command = command # Used by S and T
if command == 'M':
# Moveto command.
x = elements.pop()
y = elements.pop()
pos = float(x) + float(y) * 1j
if absolute:
current_pos = pos
else:
current_pos += pos
# when M is called, reset start_pos
# This behavior of Z is defined in svg spec:
# http://www.w3.org/TR/SVG/paths.html#PathDataClosePathCommand
start_pos = current_pos
# Implicit moveto commands are treated as lineto commands.
# So we set command to lineto here, in case there are
# further implicit commands after this moveto.
command = 'L'
elif command == 'Z':
# Close path
if current_pos != start_pos:
segments.append(path.Line(scaler(current_pos), scaler(start_pos)))
if len(segments):
segments.closed = True
current_pos = start_pos
start_pos = None
command = None # You can't have implicit commands after closing.
elif command == 'L':
x = elements.pop()
y = elements.pop()
pos = float(x) + float(y) * 1j
if not absolute:
pos += current_pos
segments.append(path.Line(scaler(current_pos), scaler(pos)))
current_pos = pos
elif command == 'H':
x = elements.pop()
pos = float(x) + current_pos.imag * 1j
if not absolute:
pos += current_pos.real
segments.append(path.Line(scaler(current_pos), scaler(pos)))
current_pos = pos
elif command == 'V':
y = elements.pop()
pos = current_pos.real + float(y) * 1j
if not absolute:
pos += current_pos.imag * 1j
segments.append(path.Line(scaler(current_pos), scaler(pos)))
current_pos = pos
elif command == 'C':
control1 = float(elements.pop()) + float(elements.pop()) * 1j
control2 = float(elements.pop()) + float(elements.pop()) * 1j
end = float(elements.pop()) + float(elements.pop()) * 1j
if not absolute:
control1 += current_pos
control2 += current_pos
end += current_pos
segments.append(path.CubicBezier(scaler(current_pos), scaler(control1), scaler(control2), scaler(end)))
current_pos = end
elif command == 'S':
# Smooth curve. First control point is the "reflection" of
# the second control point in the previous path.
if last_command not in 'CS':
# If there is no previous command or if the previous command
# was not an C, c, S or s, assume the first control point is
# coincident with the current point.
control1 = scaler(current_pos)
else:
# The first control point is assumed to be the reflection of
# the second control point on the previous command relative
# to the current point.
control1 = 2 * scaler(current_pos) - segments[-1].control2
control2 = float(elements.pop()) + float(elements.pop()) * 1j
end = float(elements.pop()) + float(elements.pop()) * 1j
if not absolute:
control2 += current_pos
end += current_pos
segments.append(path.CubicBezier(scaler(current_pos), control1, scaler(control2), scaler(end)))
current_pos = end
elif command == 'Q':
control = float(elements.pop()) + float(elements.pop()) * 1j
end = float(elements.pop()) + float(elements.pop()) * 1j
if not absolute:
control += current_pos
end += current_pos
segments.append(path.QuadraticBezier(scaler(current_pos), scaler(control), scaler(end)))
current_pos = end
elif command == 'T':
# Smooth curve. Control point is the "reflection" of
# the second control point in the previous path.
if last_command not in 'QT':
# If there is no previous command or if the previous command
# was not an Q, q, T or t, assume the first control point is
# coincident with the current point.
control = scaler(current_pos)
else:
# The control point is assumed to be the reflection of
# the control point on the previous command relative
# to the current point.
control = 2 * scaler(current_pos) - segments[-1].control
end = float(elements.pop()) + float(elements.pop()) * 1j
if not absolute:
end += current_pos
segments.append(path.QuadraticBezier(scaler(current_pos), control, scaler(end)))
current_pos = end
elif command == 'A':
radius = float(elements.pop()) + float(elements.pop()) * 1j
rotation = float(elements.pop())
arc = float(elements.pop())
sweep = float(elements.pop())
end = float(elements.pop()) + float(elements.pop()) * 1j
if not absolute:
end += current_pos
segments.append(path.Arc(current_pos, radius, rotation, arc, sweep, end, scaler))
current_pos = end
return segments
def path_from_ellipse(x, y, rx, ry, matrix, state):
arc = "M %.9f %.9f " % (x-rx,y)
arc += "A %.9f %.9f 0 0 1 %.9f %.9f " % (rx, ry, x+rx,y)
arc += "A %.9f %.9f 0 0 1 %.9f %.9f" % (rx, ry, x-rx,y)
return parse_path(arc, matrix=matrix, svgState=state)
def path_from_rect(x,y,w,h,rx,ry, matrix,state):
if not rx and not ry:
rect = "M %.9f %.9f h %.9f v %.9f h %.9f Z" % (x,y,w,h,-w)
else:
if rx is None:
rx = ry
elif ry is None:
ry = rx
rect = "M %.9f %.9f h %.9f " % (x+rx,y,w-2*rx)
rect += "a %.9f %.9f 0 0 1 %.9f %.9f " % (rx, ry, rx, ry)
rect += "v %.9f " % (h-2*ry)
rect += "a %.9f %.9f 0 0 1 %.9f %.9f " % (rx, ry, -rx, ry)
rect += "h %.9f " % -(w-2*rx)
rect += "a %.9f %.9f 0 0 1 %.9f %.9f " % (rx, ry, -rx, -ry)
rect += "v %.9f " % -(h-2*ry)
rect += "a %.9f %.9f 0 0 1 %.9f %.9f Z" % (rx, ry, rx, -ry)
return parse_path(rect, matrix=matrix, svgState=state)
def sizeFromString(text):
"""
Returns size in mm, if possible.
"""
text = re.sub(r'\s',r'', text)
try:
return float(text)*25.4/96 # px
except:
if text[-1] == '%':
return float(text[:-1]) # NOT mm
units = text[-2:].lower()
x = float(text[:-2])
convert = { 'mm':1, 'cm':10, 'in':25.4, 'px':25.4/96, 'pt':25.4/72, 'pc':12*25.4/72 }
try:
return x * convert[units]
except:
return x # NOT mm
def rgbFromColor(colorName):
colorName = colorName.strip().lower()
if colorName == 'none':
return None
cmd = re.split(r'[\s(),]+', colorName)
if cmd[0] == 'rgb':
colors = cmd[1:4]
outColor = []
for c in colors:
if c.endswith('%'):
outColor.append(float(c[:-1]) / 100.)
else:
outColor.append(float(c) / 255.)
return tuple(outColor)
elif colorName.startswith('#'):
if len(colorName) == 4:
return (int(colorName[1],16)/15., int(colorName[2],16)/15., int(colorName[3],16)/15.)
else:
return (int(colorName[1:3],16)/255., int(colorName[3:5],16)/255., int(colorName[5:7],16)/255.)
else:
return SVG_COLORS[colorName]
def getPathsFromSVG(svg):
def updateStateCommand(state,cmd,arg):
if cmd == 'fill':
state.fill = rgbFromColor(arg)
elif cmd == 'fill-opacity':
state.fillOpacity = float(arg)
elif cmd == 'fill-rule':
state.fillRule = arg
# if state.fill is None:
# state.fill = (0.,0.,0.)
elif cmd == 'stroke':
state.stroke = rgbFromColor(arg)
elif cmd == 'stroke-opacity':
state.strokeOpacity = rgbFromColor(arg)
elif cmd == 'stroke-width':
state.strokeWidth = float(arg)
elif cmd == 'vector-effect':
state.strokeWidthScaling = 'non-scaling-stroke' not in cmd
# todo better scaling for non-uniform cases?
def updateState(tree,state,matrix):
state = state.clone()
try:
style = re.sub(r'\s',r'', tree.attrib['style']).lower()
for item in style.split(';'):
cmd,arg = item.split(':')[:2]
updateStateCommand(state,cmd,arg)
except:
pass
for item in tree.attrib:
try:
updateStateCommand(state,item,tree.attrib[item])
except:
pass
if state.strokeWidth and state.strokeWidthScaling:
# this won't work great for non-uniform scaling
h = abs(applyMatrix(matrix, complex(0,state.strokeWidth)) - applyMatrix(matrix, 0j))
w = abs(applyMatrix(matrix, complex(state.strokeWidth,0)) - applyMatrix(matrix, 0j))
state.strokeWidth = (h+w)/2
return state
def reorder(a,b,c,d,e,f):
return [a,c,e, b,d,f]
def updateMatrix(tree, matrix):
try:
transformList = re.split(r'\)[\s,]+', tree.attrib['transform'].strip().lower())
except KeyError:
return matrix
for transform in transformList:
cmd = re.split(r'[,()\s]+', transform)
updateMatrix = None
if cmd[0] == 'matrix':
updateMatrix = reorder(*list(map(float, cmd[1:7])))
elif cmd[0] == 'translate':
x = float(cmd[1])
if len(cmd) >= 3 and cmd[2] != '':
y = float(cmd[2])
else:
y = 0
updateMatrix = reorder(1,0,0,1,x,y)
elif cmd[0] == 'scale':
x = float(cmd[1])
if len(cmd) >= 3 and cmd[2] != '':
y = float(cmd[2])
else:
y = x
updateMatrix = reorder(x,0,0, y,0,0)
elif cmd[0] == 'rotate':
theta = float(cmd[1]) * math.pi / 180.
c = math.cos(theta)
s = math.sin(theta)
updateMatrix = [c, -s, 0, s, c, 0]
if len(cmd) >= 4 and cmd[2] != '':
x = float(cmd[2])
y = float(cmd[3])
updateMatrix = matrixMultiply(updateMatrix, [1,0,-x, 0,1,-y])
updateMatrix = matrixMultiply([1,0,x, 0,1,y], updateMatrix)
elif cmd[0] == 'skewX':
theta = float(cmd[1]) * math.pi / 180.
updateMatrix = [1, math.tan(theta), 0, 0,1,0]
elif cmd[0] == 'skewY':
theta = float(cmd[1]) * math.pi / 180.
updateMatrix = [1,0,0, math.tan(theta),1,0]
matrix = matrixMultiply(matrix, updateMatrix)
return matrix
def updateStateAndMatrix(tree,state,matrix):
matrix = updateMatrix(tree,matrix)
return updateState(tree,state,matrix),matrix
def getPaths(paths, matrix, tree, state, savedElements):
def getFloat(attribute,default=0.):
try:
return float(tree.attrib[attribute].strip())
except KeyError:
return default
tag = re.sub(r'.*}', '', tree.tag).lower()
try:
savedElements[tree.attrib['id']] = tree
except KeyError:
pass
state, matrix = updateStateAndMatrix(tree, state, matrix)
if tag == 'path':
path = parse_path(tree.attrib['d'], matrix=matrix, svgState=state)
if len(path):
paths.append(path)
elif tag == 'circle':
path = path_from_ellipse(getFloat('cx'), getFloat('cy'), getFloat('r'), getFloat('r'), matrix, state)
paths.append(path)
elif tag == 'ellipse':
path = path_from_ellipse(getFloat('cx'), getFloat('cy'), getFloat('rx'), getFloat('ry'), matrix, state)
paths.append(path)
elif tag == 'line':
x1 = getFloat('x1')
y1 = getFloat('y1')
x2 = getFloat('x2')
y2 = getFloat('y2')
p = 'M %.9f %.9f L %.9f %.9f' % (x1,y1,x2,y2)
path = parse_path(p, matrix=matrix, svgState=state)
paths.append(path)
elif tag == 'polygon':
points = re.split(r'[\s,]+', tree.attrib['points'].strip())
p = ' '.join(['M', points[0], points[1], 'L'] + points[2:] + ['Z'])
path = parse_path(p, matrix=matrix, svgState=state)
paths.append(path)
elif tag == 'polyline':
points = re.split(r'[\s,]+', tree.attrib['points'].strip())
p = ' '.join(['M', points[0], points[1], 'L'] + points[2:])
path = parse_path(p, matrix=matrix, svgState=state)
paths.append(path)
elif tag == 'rect':
x = getFloat('x')
y = getFloat('y')
w = getFloat('width')
h = getFloat('height')
rx = getFloat('rx',default=None)
ry = getFloat('ry',default=None)
path = path_from_rect(x,y,w,h,rx,ry, matrix,state)
paths.append(path)
elif tag == 'g' or tag == 'svg':
for child in tree:
getPaths(paths, matrix, child, state, savedElements)
elif tag == 'use':
try:
link = None
for tag in tree.attrib:
if tag.strip().lower().endswith("}href"):
link = tree.attrib[tag]
break
if link is None or link[0] != '#':
raise KeyError
source = savedElements[link[1:]]
x = 0
y = 0
try:
x = float(tree.attrib['x'])
except:
pass
try:
y = float(tree.attrib['y'])
except:
pass
# TODO: handle width and height? (Inkscape does not)
matrix = matrixMultiply(matrix, reorder(1,0,0,1,x,y))
getPaths(paths, matrix, source, state, dict(savedElements))
except KeyError:
pass
def scale(width, height, viewBox, z):
x = (z.real - viewBox[0]) / (viewBox[2] - viewBox[0]) * width
y = (viewBox[3]-z.imag) / (viewBox[3] - viewBox[1]) * height
return complex(x,y)
paths = []
try:
width = sizeFromString(svg.attrib['width'].strip())
except KeyError:
width = None
try:
height = sizeFromString(svg.attrib['height'].strip())
except KeyError:
height = None
try:
viewBox = list(map(float, re.split(r'[\s,]+', svg.attrib['viewBox'].strip())))
except KeyError:
if width is None or height is None:
raise KeyError
viewBox = [0, 0, width*96/25.4, height*96/25.4]
if width is None:
width = viewBox[2] * 25.4/96
if height is None:
height = viewBox[3] * 25.4/96
viewBoxWidth = viewBox[2]
viewBoxHeight = viewBox[3]
viewBox[2] += viewBox[0]
viewBox[3] += viewBox[1]
try:
preserve = svg.attrib['preserveAspectRatio'].strip().lower().split()
if len(preserve[0]) != 8:
raise KeyError
if len(preserve)>=2 and preserve[1] == 'slice':
if viewBoxWidth/viewBoxHeight > width/height:
# viewbox is wider than viewport, so scale by height to ensure
# viewbox covers the viewport
rescale = height / viewBoxHeight
else:
rescale = width / viewBoxWidth
else:
if viewBoxWidth/viewBoxHeight > width/height:
# viewbox is wider than viewport, so scale by width to ensure
# viewport covers the viewbox
rescale = width / viewBoxWidth
else:
rescale = height / viewBoxHeight
matrix = [rescale, 0, 0,
0, rescale, 0];
if preserve[0][0:4] == 'xmin':
# viewBox[0] to 0
matrix[2] = -viewBox[0] * rescale
elif preserve[0][0:4] == 'xmid':
# viewBox[0] to width/2
matrix[2] = -viewBox[0] * rescale + width/2
else: # preserve[0][0:4] == 'xmax':
# viewBox[0] to width
matrix[2] = -viewBox[0] * rescale + width
if preserve[0][4:8] == 'ymin':
# viewBox[1] to 0
matrix[5] = -viewBox[1] * rescale
elif preserve[0][4:8] == 'ymid':
# viewBox[0] to width/2
matrix[5] = -viewBox[1] * rescale + height/2
else: # preserve[0][4:8] == 'xmax':
# viewBox[0] to width
matrix[5] = -viewBox[1] * rescale + height
except:
matrix = [ width/viewBoxWidth, 0, -viewBox[0]* width/viewBoxWidth,
0, -height/viewBoxHeight, viewBox[3]*height/viewBoxHeight ]
getPaths(paths, matrix, svg, path.SVGState(), {})
return ( paths, applyMatrix(matrix, complex(viewBox[0], viewBox[1])),
applyMatrix(matrix, complex(viewBox[2], viewBox[3])) )
def getPathsFromSVGFile(filename):
return getPathsFromSVG(ET.parse(filename).getroot())
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