def interpret(self, interpreter, variables):
interpreter.assert_not_closed()
interpreter.start_new_segment()
v0 = interpreter.position
if interpreter.has_last_vertex:
v0_index = interpreter.get_last_vertex()
else:
v0_index = interpreter.new_vertex(*v0)
start = complex(*v0)
rad_x_expr, rad_y_expr = self.radii
rad_x = interpreter.eval_(rad_x_expr, variables)
rad_y = interpreter.eval_(rad_y_expr, variables)
radius = complex(rad_x, rad_y)
xaxis_rot = interpreter.eval_(self.rot, variables)
flag1 = interpreter.eval_(self.flag1, variables)
flag2 = interpreter.eval_(self.flag2, variables)
# numverts, requires -1 else it means segments (21 verts is 20 segments).
if self.num_verts is not None:
num_verts = interpreter.eval_(self.num_verts, variables)
else:
num_verts = interpreter.dflt_num_verts
num_verts -= 1
end = interpreter.calc_vertex(self.is_abs, self.end[0], self.end[1],
variables)
end = complex(*end)
arc = Arc(start, radius, xaxis_rot, flag1, flag2, end)
theta = 1 / num_verts
for i in range(1, num_verts + 1):
v1 = x, y = arc.point(theta * i)
v1_index = interpreter.new_vertex(x, y)
interpreter.new_edge(v0_index, v1_index)
v0_index = v1_index
curve = SvCircle.from_arc(arc)
interpreter.curves.append(curve)
interpreter.position = v1
interpreter.new_knot("A.#", *v1)
if self.close:
interpreter.close_segment(v1_index)
interpreter.has_last_vertex = True
def perform_ArcTo(self):
'''
expects 6 parameters:
A rx,ry rot flag1 flag2 x,y num_verts [z]
example:
A <2v xr,yr> <rot> <int-bool> <int-bool> <2v xend,yend> <int num_verts> [z]
'''
tempstr = self.stripped_line.split(' ')
if not len(tempstr) == 6:
print(tempstr)
print('error on ArcTo line: ', self.stripped_line)
return
points = []
start = complex(*self.posxy)
radius = complex(*self.get_2vec(tempstr[0]))
xaxis_rot = self.get_typed(tempstr[1], float)
flag1 = self.get_typed(tempstr[2], int)
flag2 = self.get_typed(tempstr[3], int)
# numverts, requires -1 else it means segments (21 verts is 20 segments).
num_verts = self.get_typed(tempstr[5], int) - 1
if self.section_type == 'arc_to_absolute':
end = complex(*self.get_2vec(tempstr[4]))
else:
xy_end_pre = self.get_2vec(tempstr[4])
xy_end_final = self.relative(self.posxy, xy_end_pre)
end = complex(*xy_end_final)
arc = Arc(start, radius, xaxis_rot, flag1, flag2, end)
theta = 1/num_verts
for i in range(num_verts+1):
point = arc.point(theta * i)
points.append(point)
return self.find_right_index_and_make_edges(points)
def perform_ArcTo(self):
'''
expects 6 parameters:
A rx,ry rot flag1 flag2 x,y num_verts [z]
example:
A <2v xr,yr> <rot> <int-bool> <int-bool> <2v xend,yend> <int num_verts> [z]
'''
tempstr = self.stripped_line.split(' ')
if not len(tempstr) == 6:
print(tempstr)
print('error on ArcTo line: ', self.stripped_line)
return
points = []
start = complex(*self.posxy)
radius = complex(*self.get_2vec(tempstr[0]))
xaxis_rot = self.get_typed(tempstr[1], float)
flag1 = self.get_typed(tempstr[2], int)
flag2 = self.get_typed(tempstr[3], int)
# numverts, requires -1 else it means segments (21 verts is 20 segments).
num_verts = self.get_typed(tempstr[5], int) - 1
if self.section_type == 'arc_to_absolute':
end = complex(*self.get_2vec(tempstr[4]))
else:
xy_end_pre = self.get_2vec(tempstr[4])
xy_end_final = self.relative(self.posxy, xy_end_pre)
end = complex(*xy_end_final)
arc = Arc(start, radius, xaxis_rot, flag1, flag2, end)
theta = 1/num_verts
for i in range(num_verts+1):
point = arc.point(theta * i)
points.append(point)
return self.find_right_index_and_make_edges(points)