kopia lustrzana https://github.com/inkstitch/inkstitch
102 wiersze
3.6 KiB
Python
102 wiersze
3.6 KiB
Python
from shapely import geometry as shgeo
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import math
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from .element import param, EmbroideryElement, Patch
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from ..i18n import _
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from ..svg import PIXELS_PER_MM
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from ..utils import cache
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from ..stitches import running_stitch, auto_fill, legacy_fill
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class Fill(EmbroideryElement):
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element_name = _("Fill")
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def __init__(self, *args, **kwargs):
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super(Fill, self).__init__(*args, **kwargs)
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@property
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@param('auto_fill', _('Manually routed fill stitching'), type='toggle', inverse=True, default=True)
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def auto_fill(self):
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return self.get_boolean_param('auto_fill', True)
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@property
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@param('angle', _('Angle of lines of stitches'), unit='deg', type='float', default=0)
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@cache
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def angle(self):
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return math.radians(self.get_float_param('angle', 0))
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@property
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def color(self):
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# SVG spec says the default fill is black
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return self.get_style("fill", "#000000")
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@property
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@param('flip', _('Flip fill (start right-to-left)'), type='boolean', default=False)
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def flip(self):
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return self.get_boolean_param("flip", False)
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@property
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@param('row_spacing_mm', _('Spacing between rows'), unit='mm', type='float', default=0.25)
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def row_spacing(self):
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return max(self.get_float_param("row_spacing_mm", 0.25), 0.1 * PIXELS_PER_MM)
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@property
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def end_row_spacing(self):
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return self.get_float_param("end_row_spacing_mm")
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@property
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@param('max_stitch_length_mm', _('Maximum fill stitch length'), unit='mm', type='float', default=3.0)
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def max_stitch_length(self):
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return max(self.get_float_param("max_stitch_length_mm", 3.0), 0.1 * PIXELS_PER_MM)
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@property
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@param('staggers', _('Stagger rows this many times before repeating'), type='int', default=4)
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def staggers(self):
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return self.get_int_param("staggers", 4)
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@property
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@cache
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def paths(self):
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return self.flatten(self.parse_path())
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@property
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@cache
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def shape(self):
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poly_ary = []
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for sub_path in self.paths:
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point_ary = []
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last_pt = None
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for pt in sub_path:
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if (last_pt is not None):
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vp = (pt[0] - last_pt[0], pt[1] - last_pt[1])
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dp = math.sqrt(math.pow(vp[0], 2.0) + math.pow(vp[1], 2.0))
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# dbg.write("dp %s\n" % dp)
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if (dp > 0.01):
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# I think too-close points confuse shapely.
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point_ary.append(pt)
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last_pt = pt
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else:
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last_pt = pt
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if point_ary:
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poly_ary.append(point_ary)
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# shapely's idea of "holes" are to subtract everything in the second set
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# from the first. So let's at least make sure the "first" thing is the
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# biggest path.
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# TODO: actually figure out which things are holes and which are shells
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poly_ary.sort(key=lambda point_list: shgeo.Polygon(point_list).area, reverse=True)
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polygon = shgeo.MultiPolygon([(poly_ary[0], poly_ary[1:])])
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# print >> sys.stderr, "polygon valid:", polygon.is_valid
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return polygon
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def to_patches(self, last_patch):
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stitch_lists = legacy_fill(self.shape,
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self.angle,
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self.row_spacing,
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self.end_row_spacing,
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self.max_stitch_length,
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self.flip,
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self.staggers)
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return [Patch(stitches=stitch_list, color=self.color) for stitch_list in stitch_lists]
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