def zigzag(a, stepover, zig_unidirectional, zig_angle):
if a.num_curves() == 0:
return
global rightward_for_zigs
global curve_list_for_zigs
global sin_angle_for_zigs
global cos_angle_for_zigs
global sin_minus_angle_for_zigs
global cos_minus_angle_for_zigs
global one_over_units
radians_angle = zig_angle * math.pi / 180
sin_angle_for_zigs = math.sin(-radians_angle)
cos_angle_for_zigs = math.cos(-radians_angle)
sin_minus_angle_for_zigs = math.sin(radians_angle)
cos_minus_angle_for_zigs = math.cos(radians_angle)
one_over_units = 1 / area.get_units()
a = rotated_area(a)
b = area.Box()
a.GetBox(b)
x0 = b.MinX() - 1.0
x1 = b.MaxX() + 1.0
height = b.MaxY() - b.MinY()
num_steps = int(height / stepover + 1)
y = b.MinY() + 0.1 * one_over_units
null_point = area.Point(0, 0)
rightward_for_zigs = True
curve_list_for_zigs = []
for i in range(0, num_steps):
y0 = y
y = y + stepover
p0 = area.Point(x0, y0)
p1 = area.Point(x0, y)
p2 = area.Point(x1, y)
p3 = area.Point(x1, y0)
c = area.Curve()
c.append(area.Vertex(0, p0, null_point, 0))
c.append(area.Vertex(0, p1, null_point, 0))
c.append(area.Vertex(0, p2, null_point, 1))
c.append(area.Vertex(0, p3, null_point, 0))
c.append(area.Vertex(0, p0, null_point, 1))
a2 = area.Area()
a2.append(c)
a2.Intersect(a)
make_zig(a2, y0, y, zig_unidirectional)
if zig_unidirectional == False:
rightward_for_zigs = (rightward_for_zigs == False)
reorder_zigs()
return curve_list_for_zigs
def zigzag(a, stepover, zig_unidirectional):
if a.num_curves() == 0:
return
global rightward_for_zigs
global curve_list_for_zigs
global sin_angle_for_zigs
global cos_angle_for_zigs
global sin_minus_angle_for_zigs
global cos_minus_angle_for_zigs
global one_over_units
one_over_units = 1 / area.get_units()
a = rotated_area(a)
b = area.Box()
a.GetBox(b)
x0 = b.MinX() - 1.0
x1 = b.MaxX() + 1.0
height = b.MaxY() - b.MinY()
num_steps = int(height / stepover + 1)
y = b.MinY() + 0.1 * one_over_units
null_point = area.Point(0, 0)
rightward_for_zigs = True
curve_list_for_zigs = []
for i in range(0, num_steps):
y0 = y
y = y + stepover
p0 = area.Point(x0, y0)
p1 = area.Point(x0, y)
p2 = area.Point(x1, y)
p3 = area.Point(x1, y0)
c = area.Curve()
c.append(area.Vertex(0, p0, null_point, 0))
c.append(area.Vertex(0, p1, null_point, 0))
c.append(area.Vertex(0, p2, null_point, 1))
c.append(area.Vertex(0, p3, null_point, 0))
c.append(area.Vertex(0, p0, null_point, 1))
a2 = area.Area()
a2.append(c)
a2.Intersect(a)
make_zig(a2, y0, y, zig_unidirectional)
if zig_unidirectional == False:
rightward_for_zigs = (rightward_for_zigs == False)
reorder_zigs()
