Ejemplo n.º 1
0
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
Ejemplo n.º 2
0
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()