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class StitchGroup:
"""A collection of Stitch objects with attached instructions.
StitchGroups will later be combined to make ColorBlocks, which in turn are
combined to make a StitchPlan. Jump stitches are allowed between
StitchGroups, but not between stitches inside a StitchGroup. This means
that EmbroideryElement classes should produce multiple StitchGroups only if
they want to allow for the possibility of jump stitches to be added in
between them by the stitch plan generation code.
"""
def __init__(self, color=None, stitches=None, trim_after=False, stop_after=False, tie_modus=0, stitch_as_is=False):
self.color = color
self.stitches = stitches or []
self.trim_after = trim_after
self.stop_after = stop_after
self.tie_modus = tie_modus
self.stitch_as_is = stitch_as_is
def __add__(self, other):
if isinstance(other, StitchGroup):
return StitchGroup(self.color, self.stitches + other.stitches)
else:
raise TypeError("StitchGroup can only be added to another StitchGroup")
def __len__(self):
# This method allows `len(patch)` and `if patch:
return len(self.stitches)
def add_stitch(self, stitch):
self.stitches.append(stitch)
def reverse(self):
return StitchGroup(self.color, self.stitches[::-1])
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