def _circular_arc_3_point_close(self, element):
p1, chunk = self.read_point(element.params)
p2, chunk = self.read_point(chunk)
p3, chunk = self.read_point(chunk)
flag = self.read_enum(chunk)[0]
p1, p2, p3 = libgeom.apply_trafo_to_points([p1, p2, p3],
self.get_trafo())
center = libgeom.circle_center_by_3points(p1, p2, p3)
if not center:
return
r = libgeom.distance(center, p1)
angle1 = libgeom.get_point_angle(p3, center)
angle2 = libgeom.get_point_angle(p1, center)
x, y = center
rect = [x - r, y - r, 2 * r, 2 * r]
flag = {
0: sk2const.ARC_PIE_SLICE,
1: sk2const.ARC_CHORD
}.get(flag, sk2const.ARC_CHORD)
circle = sk2_model.Circle(self.layer.config,
self.layer,
rect,
angle1=angle1,
angle2=angle2,
circle_type=flag,
style=self.get_style(fill=True))
self.layer.childs.append(circle)
def _circular_arc_3_point(self, element):
p1, chunk = self.read_point(element.params)
p2, chunk = self.read_point(chunk)
p3, chunk = self.read_point(chunk)
p1, p2, p3 = libgeom.apply_trafo_to_points(
[p1, p2, p3], self.get_trafo())
center = libgeom.circle_center_by_3points(p1, p2, p3)
if not center:
return
r = libgeom.distance(center, p1)
angle1 = libgeom.get_point_angle(p3, center)
angle2 = libgeom.get_point_angle(p1, center)
x, y = center
rect = [x - r, y - r, 2 * r, 2 * r]
circle = sk2_model.Circle(self.layer.config, self.layer, rect,
angle1=angle1,
angle2=angle2,
circle_type=sk2const.ARC_ARC,
style=self.get_style(stroke=True))
self.layer.childs.append(circle)