def test_polyline(self):
polyline = Polyline()
polyline.add_vertex( (0, 0) )
vt1 = " 0\nVERTEX\n 8\n0\n 10\n0.0\n 20\n0.0\n 30\n0.0\n"
polyline.add_vertex( (1, 1) )
vt2 = " 0\nVERTEX\n 8\n0\n 10\n1.0\n 20\n1.0\n 30\n0.0\n"
expected = " 0\nPOLYLINE\n 8\n0\n 66\n1\n 10\n0.0\n 20\n0.0\n 30\n0.0\n" \
" 70\n8\n" + vt1 + vt2 + " 0\nSEQEND\n"
self.assertEqual(dxfstr(polyline), expected)
def to_dxf(self, split=False, **attr):
"""
:param split: bool if True, each segment in Chain is saved separately
:param attr: dict of graphic attributes
:return: polyline or list of entities along the chain
"""
if split: # handle polylines as separate entities
return super(Chain, self).to_dxf(**attr)
if len(self) == 1:
return self[0].to_dxf(**attr)
# if no color specified assume chain color is the same as the first element's
color = attr.get('color', self.color)
attr['color'] = color_to_aci(color)
try:
attr.setdefault('layer', self.layer)
except:
pass # no layer defined
from dxfwrite.entities import Polyline
attr['flags'] = 1 if self.isclosed() else 0
res = Polyline(**attr)
for e in self:
if isinstance(e, Line2):
res.add_vertex(e.start.xy)
elif isinstance(e, Arc2):
bulge = tan(e.angle() / 4)
res.add_vertex(e.start.xy, bulge=bulge)
else:
if attr.pop('R12', True): # R12 doesn't handle splines.
attr['color'] = color # otherwise it causes trouble
del attr['flags']
return super(Chain, self).to_dxf(**attr)
if not self.isclosed():
res.add_vertex(self.end.xy)
return res
def to_dxf(self, split=False, **attr):
"""
:param split: bool if True, each segment in Chain is saved separately
:param attr: dict of graphic attributes
:return: polyline or list of entities along the chain
"""
if split: #handle polylines as separate entities
return super(Chain, self).to_dxf(**attr)
if len(self) == 1:
return self[0].to_dxf(**attr)
#if no color specified assume chain color is the same as the first element's
color = attr.get('color', self.color)
attr['color'] = color_to_aci(color)
try:
attr.setdefault('layer', self.layer)
except:
pass #no layer defined
from dxfwrite.entities import Polyline
attr['flags'] = 1 if self.isclosed() else 0
res = Polyline(**attr)
for e in self:
if isinstance(e, Line2):
res.add_vertex(e.start.xy)
elif isinstance(e, Arc2):
bulge = tan(e.angle() / 4)
res.add_vertex(e.start.xy, bulge=bulge)
else:
if attr.pop('R12', True): #R12 doesn't handle splines.
attr['color'] = color #otherwise it causes trouble
del attr['flags']
return super(Chain, self).to_dxf(**attr)
if not self.isclosed():
res.add_vertex(self.end.xy)
return res
def to_dxf(self, split=False, **attr):
""":return: polyline or list of entities along the chain"""
if split: #handle polylines as separate entities
return super(Chain,self).to_dxf(**attr)
#assume chain color is the same as the first element's
color=self[0]._dxf_color()
from dxfwrite.entities import Polyline
flags=1 if self.isclosed() else 0
res=Polyline(color=color, flags=flags, **attr)
for e in self:
if isinstance(e,Line2):
res.add_vertex(e.start.xy)
elif isinstance(e, Arc2):
bulge=tan(e.angle()/4)
res.add_vertex(e.start.xy,bulge=bulge)
else: #we have a Spline in the chain. Split it for now
return super(Chain,self).to_dxf(**attr)
if not self.isclosed():
res.add_vertex(self.end.xy)
return res