kopia lustrzana https://github.com/inkstitch/inkstitch
67 wiersze
2.3 KiB
Python
67 wiersze
2.3 KiB
Python
|
# Authors: see git history
|
||
|
|
#
|
||
|
|
# Copyright (c) 2010 Authors
|
||
|
|
# Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details.
|
||
|
|
|
||
|
|
import inkex
|
||
|
|
from shapely import geometry as shgeo
|
||
|
|
|
||
|
|
from .svg import apply_transforms
|
||
|
|
from .svg.tags import EMBROIDERABLE_TAGS
|
||
|
|
from .utils import Point
|
||
|
|
|
||
|
|
|
||
|
|
def is_pattern(node):
|
||
|
|
if node.tag not in EMBROIDERABLE_TAGS:
|
||
|
|
return False
|
||
|
|
return "marker-start:url(#inkstitch-pattern-marker)" in node.get('style', '')
|
||
|
|
|
||
|
|
|
||
|
|
def apply_patterns(patches, node):
|
||
|
|
patterns = _get_patterns(node)
|
||
|
|
if not patterns:
|
||
|
|
return patches
|
||
|
|
|
||
|
|
patch_points = []
|
||
|
|
for patch in patches:
|
||
|
|
for i, stitch in enumerate(patch.stitches):
|
||
|
|
patch_points.append(stitch)
|
||
|
|
if i == len(patch.stitches) - 1:
|
||
|
|
continue
|
||
|
|
intersection_points = _get_pattern_points(stitch, patch.stitches[i+1], patterns)
|
||
|
|
for point in intersection_points:
|
||
|
|
patch_points.append(point)
|
||
|
|
patch.stitches = patch_points
|
||
|
|
|
||
|
|
|
||
|
|
def _get_patterns(node):
|
||
|
|
xpath = "./parent::svg:g/*[contains(@style, 'marker-start:url(#inkstitch-pattern-marker)')]"
|
||
|
|
patterns = node.xpath(xpath, namespaces=inkex.NSS)
|
||
|
|
line_strings = []
|
||
|
|
for pattern in patterns:
|
||
|
|
if pattern.tag not in EMBROIDERABLE_TAGS:
|
||
|
|
continue
|
||
|
|
d = pattern.get_path()
|
||
|
|
path = inkex.paths.Path(d).to_superpath()
|
||
|
|
path = apply_transforms(path, pattern)
|
||
|
|
inkex.bezier.cspsubdiv(path, 0.1)
|
||
|
|
path = [[point for control_before, point, control_after in subpath] for subpath in path]
|
||
|
|
lines = [shgeo.LineString(p) for p in path]
|
||
|
|
for line in lines:
|
||
|
|
line_strings.append(line)
|
||
|
|
return shgeo.MultiLineString(line_strings)
|
||
|
|
|
||
|
|
|
||
|
|
def _get_pattern_points(first, second, patterns):
|
||
|
|
points = []
|
||
|
|
for pattern in patterns:
|
||
|
|
intersection = shgeo.LineString([first, second]).intersection(pattern)
|
||
|
|
if isinstance(intersection, shgeo.Point):
|
||
|
|
points.append(Point(intersection.x, intersection.y))
|
||
|
|
if isinstance(intersection, shgeo.MultiPoint):
|
||
|
|
for point in intersection:
|
||
|
|
points.append(Point(point.x, point.y))
|
||
|
|
# sort points after their distance to left
|
||
|
|
points.sort(key=lambda point: point.distance(first))
|
||
|
|
return points
|