wavy flag

By Kaustubh Patil
flag_width = 150
flag_height = flag_width / 1.1
flag_section_height = flag_height / 3
ashoka_chakra_radius = flag_height / 10


def left_wave(h=25, w=50, fill="white", stroke="black"):
    x, y = -w / 2, 0

    e = ellipse(x=x, y=y, w=w, h=h*2, fill=fill, stroke=stroke)
    r = rectangle(x=x, y=y-h/2, w=w, h=h, fill=fill, stroke="none")
    return e + r


def right_wave(h=25, w=50, fill="white", stroke="black"):
    w = left_wave(h=h, w=w, fill=fill, stroke=stroke)
    return w | rotate(180)


def left_flag_section(fill, stroke="none"):
    w = left_wave(w=100, h=33.3, fill=fill, stroke=stroke)
    r_lower = rectangle(w=100, h=33.3, y=-33.3/2, x=-50, fill=fill, stroke="none")
    return r_lower + w

def right_flag_section(fill, stroke="none"):
    return left_flag_section(fill, stroke) | rotate(180)

def flag():
    left_part = (
        (left_flag_section("orange") | translate(y=flag_section_height * 2)) +
        (left_flag_section("white") | translate(y=flag_section_height)) +
        left_flag_section("green") +
        (left_flag_section("white") | translate(y=-flag_section_height)))

    right_part = (
        (right_flag_section("green") | translate(y=-flag_section_height)) +
        right_flag_section("white") +
        (right_flag_section("orange") | translate(y=flag_section_height)) +
        (right_flag_section("white") | translate(y=flag_section_height * 2)))

    ashoka_outline = circle(r=ashoka_chakra_radius, stroke="blue")
    ashoka_spoke = line(x1=0, y1=0, x2=ashoka_chakra_radius, y2=0, stroke="blue")
    ashoka_spokes = ashoka_spoke | repeat(24, rotate(360/24))
    ashoka = ashoka_outline + ashoka_spokes

    return left_part + ((right_part) | translate(y=18, x=-4)) + (ashoka | translate(y=30))

show(flag())

# not-wavy flag...

# flag_height = 100
# flag_width = flag_height * 1.5
# flag_section_height = flag_height / 3
# ashoka_chakra_radius = 12.5

# saffron_section = rectangle(h=flag_section_height, w=flag_width, fill="orange", stroke="none")
# saffron_section = saffron_section | translate(y=flag_section_height * 2)

# white_section = rectangle(h=flag_section_height, w=flag_width, fill="white", stroke="none")

# ashoka_chakra_outline = circle(r=12.5, stroke="blue")
# ashoka_chakra_spoke = line(x1=0, y1=0, x2=ashoka_chakra_radius, y2=0, stroke="blue")
# ashoka_chakra_spokes = ashoka_chakra_spoke | repeat(24, rotate(360/24))
# ashoka_chakra = ashoka_chakra_outline + ashoka_chakra_spokes

# white_section = white_section + ashoka_chakra
# white_section = white_section | translate(y=flag_section_height)

# green_section = rectangle(h=flag_section_height, w=flag_width, fill="green", stroke="none")
# flag = saffron_section + white_section + green_section