def addOvercut(a):
nonlocal pos, centerv, radius, extendedv, sign, negative_overcuts, positive_overcuts
# move the overcut shape center position 1 radius in direction v
pos -= centerv * radius
if abs(a) < math.pi / 2:
shape = utils.Circle(radius, 64)
shape = shapely.affinity.translate(shape, pos.x, pos.y)
else: # elongate overcut circle to make sure tool bit can fit into slot
p1 = pos + (extendedv * radius)
l = shapely.geometry.LineString((pos, p1))
shape = l.buffer(radius, resolution=64)
if sign > 0:
negative_overcuts.append(shape)
else:
positive_overcuts.append(shape)
def execute(self, context):
#utils.silhoueteOffset(context,-self.diameter)
o1 = bpy.context.active_object
shapes = utils.curveToShapely(o1)
negative_overcuts = []
positive_overcuts = []
diameter = self.diameter * 1.001
for s in shapes:
s = shapely.geometry.polygon.orient(s, 1)
if s.boundary.type == 'LineString':
loops = [s.boundary] #s=shapely.geometry.asMultiLineString(s)
else:
loops = s.boundary
for ci, c in enumerate(loops):
if ci > 0 or self.do_outer:
#c=s.boundary
for i, co in enumerate(c.coords):
i1 = i - 1
if i1 == -1:
i1 = -2
i2 = i + 1
if i2 == len(c.coords):
i2 = 0
v1 = Vector(co) - Vector(c.coords[i1])
v1 = v1.xy #Vector((v1.x,v1.y,0))
v2 = Vector(c.coords[i2]) - Vector(co)
v2 = v2.xy #v2 = Vector((v2.x,v2.y,0))
if not v1.length == 0 and not v2.length == 0:
a = v1.angle_signed(v2)
sign = 1
#if ci==0:
# sign=-1
#else:
# sign=1
if self.invert: # and ci>0:
sign *= -1
if (sign < 0 and a < -self.threshold) or (
sign > 0 and a > self.threshold):
p = Vector((co[0], co[1]))
v1.normalize()
v2.normalize()
v = v1 - v2
v.normalize()
p = p - v * diameter / 2
if abs(a) < math.pi / 2:
shape = utils.Circle(diameter / 2, 64)
shape = shapely.affinity.translate(
shape, p.x, p.y)
else:
l = math.tan(a / 2) * diameter / 2
p1 = p - sign * v * l
l = shapely.geometry.LineString((p, p1))
shape = l.buffer(diameter / 2,
resolution=64)
if sign > 0:
negative_overcuts.append(shape)
else:
positive_overcuts.append(shape)
print(a)
#for c in s.boundary:
negative_overcuts = shapely.ops.unary_union(negative_overcuts)
positive_overcuts = shapely.ops.unary_union(positive_overcuts)
#shapes.extend(overcuts)
fs = shapely.ops.unary_union(shapes)
fs = fs.union(positive_overcuts)
fs = fs.difference(negative_overcuts)
o = utils.shapelyToCurve(o1.name + '_overcuts', fs, o1.location.z)
#o=utils.shapelyToCurve('overcuts',overcuts,0)
return {'FINISHED'}