def segment_lengths(path, relative=False, n=20):
""" Returns a list with the lengths of each segment in the path.
"""
lengths = []
first = True
for el in path:
if first == True:
close_x, close_y = el.x, el.y
first = False
elif el.cmd == MOVETO:
close_x, close_y = el.x, el.y
lengths.append(0.0)
elif el.cmd == CLOSE:
lengths.append(linelength(x0, y0, close_x, close_y))
elif el.cmd == LINETO:
lengths.append(linelength(x0, y0, el.x, el.y))
elif el.cmd == CURVETO:
x3, y3, x1, y1, x2, y2 = el.x, el.y, el.ctrl1.x, el.ctrl1.y, el.ctrl2.x, el.ctrl2.y
lengths.append(curvelength(x0, y0, x1, y1, x2, y2, x3, y3, n))
if el.cmd != CLOSE:
x0 = el.x
y0 = el.y
if relative:
length = sum(lengths)
try:
# Relative segment lengths' sum is 1.0.
return map(lambda l: l / length, lengths)
except ZeroDivisionError:
# If the length is zero, just return zero for all segments
return [0.0] * len(lengths)
else:
return lengths
def segment_lengths(path, relative=False, n=20):
""" Returns a list with the lengths of each segment in the path.
"""
lengths = []
first = True
for el in path:
if first == True:
close_x, close_y = el.x, el.y
first = False
elif el.cmd == MOVETO:
close_x, close_y = el.x, el.y
lengths.append(0.0)
elif el.cmd == CLOSE:
lengths.append(linelength(x0, y0, close_x, close_y))
elif el.cmd == LINETO:
lengths.append(linelength(x0, y0, el.x, el.y))
elif el.cmd == CURVETO:
x3, y3, x1, y1, x2, y2 = el.x, el.y, el.ctrl1.x, el.ctrl1.y, el.ctrl2.x, el.ctrl2.y
lengths.append(curvelength(x0, y0, x1, y1, x2, y2, x3, y3, n))
if el.cmd != CLOSE:
x0 = el.x
y0 = el.y
if relative:
length = sum(lengths)
try:
# Relative segment lengths' sum is 1.0.
return map(lambda l: l / length, lengths)
except ZeroDivisionError:
# If the length is zero, just return zero for all segments
return [0.0] * len(lengths)
else:
return lengths