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()
def zigzag(a, a_firstoffset, stepover):
if a.num_curves() == 0:
return
global rightward_for_zigs
global curve_list_for_zigs
global test_count
global sin_angle_for_zigs
global cos_angle_for_zigs
global sin_minus_angle_for_zigs
global cos_minus_angle_for_zigs
a = rotated_area(a)
b = area.Box()
a.GetBox(b)
#x0 = b.MinX() - 1.0
#x1 = b.MaxX() + 1.0
x1 = b.MinX() - 1.0
x0 = b.MaxX() + 1.0
height = b.MaxY() - b.MinY()
num_steps = int(height / stepover + 1)
#y = b.MinY() + 0.1
y = b.MaxY() - 0.1
null_point = area.Point(0, 0)
rightward_for_zigs = True
curve_list_for_zigs = []
test_count = 0
for i in range(0, num_steps):
#collect vertices for a box shape from X+,Y+ toward the curve
#then move the tool Y+ and then back toward the X start position
# ------->
# |
# -------<
test_count = test_count + 1
y0 = y
#y = y + stepover
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)
rightward_for_zigs = (rightward_for_zigs == False)
y10 = y + stepover
#y = y + stepover
y2 = y + stepover * 2
p10 = area.Point(x0, y10)
p11 = area.Point(x0, y2)
p12 = area.Point(x1, y2)
p13 = area.Point(x1, y10)
c2 = area.Curve()
c2.append(area.Vertex(0, p10, null_point, 0))
c2.append(area.Vertex(0, p11, null_point, 0))
c2.append(area.Vertex(0, p12, null_point, 1))
c2.append(area.Vertex(0, p13, null_point, 0))
c2.append(area.Vertex(0, p10, null_point, 1))
a3 = area.Area()
a3.append(c2)
a3.Intersect(a)
make_zig(a3, y0, y)
rightward_for_zigs = (rightward_for_zigs == False)
reorder_zigs()