示例#1
0
def example_japanese_naval_flag(axes=None):
  create_canvas_and_axes(canvas_width=30, canvas_height=20, axes=axes)
  draw_a_circle(centre_x=12, centre_y=10, radius=6, colour='crimson')
  for i in range(32):
    if i % 2 == 0:
      draw_a_triangle(tip_x=12, tip_y=10, height=30, width=6, turn=12/32*i, colour='crimson')
  show_drawing_and_save_if_needed()
示例#2
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def example_japanese_flag(axes=None):
  #####################################################
  # Creating the canvas!
  axes = create_canvas_and_axes(canvas_width = 30,
                                canvas_height = 20,
                                axes=axes)

  #######################################################
  # Now let's draw the shapes!                         ##
  draw_a_circle(ax=axes, centre_x=15, centre_y=10, radius=6, colour='crimson')   
示例#3
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def example_segment(axes=None):
  axes = create_canvas_and_axes(canvas_width = 12,
                                canvas_height = 10, tick_step=1)
  set_default_line_style(linewidth=20)
  set_default_outline_style(linewidth=20)
  ln = new_layer()
  segment = draw_a_segment(ax=axes, start_x=6, start_y=3, turn=0, length=4)
  circle = draw_a_circle(ax=axes, centre_x=6, centre_y=9, radius=1)

  # return the list of the shapes that are moved by animation
  def init():
    return get_all_polygons_in_layers()

  def animate(i):
    # eyelid blink  
    if i < 20:
      if i % 10 == 0:
        shift_layer(shift=[0,  1], layer_nbs=[ln])
    if 20 <= i < 40:
      if i % 10 == 0:
        shift_layer(shift=[0, -1], layer_nbs=[ln])
    if 60 <= i < 80:
      if i % 10 == 0:
        rotate_layer(turn=1, diamond=[6, 3], layer_nbs=[ln])
    if 40 <= i < 60:
      if i % 10 == 0:
        stretch_layer(stretch_x=0.5, stretch_y=0.5, diamond=[6, 3], layer_nbs=[ln])
    if i % 10 == 0:
      print(i, segment.get_xy(), circle.diamond_coords)

    return get_all_polygons_in_layers()

  show_drawing_and_save_if_needed( # filename="line", 
   animation_func = animate,  animation_init = init, nb_of_frames = 80)
示例#4
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def example_Zyxxy_the_mouse(axes=None, model="https://i.pinimg.com/564x/35/4c/5c/354c5c04a1f72100ca1b110007730257.jpg",
                           block=False):
  create_canvas_and_axes(canvas_width = 36,
                                canvas_height = 36, 
                                title = "Hello, I am Zyxxy!", 
                                model=model,
                                axes = axes)

  set_default_line_style(linewidth=2)
  #######################################################
  # Now let's draw the shapes!                         ##

  # Let's start with the whiskers! They need to be behind the head, 
  # so we will need to move these lines before the line
  # that draws the head of the mouse!
  draw_a_segment(start_x=18, start_y=12, turn=3, length=6)
  draw_a_segment(start_x=18, start_y=12, turn=4, length=6)
  draw_a_segment(start_x=18, start_y=12, turn=9, length=6)
  draw_a_segment(start_x=18, start_y=12, turn=8, length=6)

  # let's draw the head of the mouse
  draw_a_triangle(tip_x=18, tip_y=6, height=18, width=18, colour='plum')
  # ... and the nose, using a triangle with the same tip
  draw_a_triangle(tip_x=18, tip_y=6, height=3, width=3, colour='black')
  # ... and the ears
  draw_a_circle(centre_x=9, centre_y=24, radius=6, colour='plum')
  draw_a_circle(centre_x=27, centre_y=24, radius=6, colour='plum')
  # ... and the eyes, white circles with black circles on top
  left_eye_white = draw_a_circle(centre_x=15, centre_y=18, radius=2, colour='white')
  right_eye_white= draw_a_circle(centre_x=21, centre_y=18, radius=2, colour='white')
  left_eye_black = draw_a_circle(centre_x=15, centre_y=18, radius=1, colour='black')
  right_eye_black= draw_a_circle(centre_x=21, centre_y=18, radius=1, colour='black')

  show_drawing_and_save_if_needed(block=block)

  eyes = {'left'  : {'black':left_eye_black,  'white':left_eye_white}, 
          'right' : {'black':right_eye_black, 'white':right_eye_white}}

  return eyes
示例#5
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def example_Zyxxy_the_mouse(axes=None):
  #########################################################
  ## CREATING THE DRAWING!                               ##
  #########################################################
  # Creating the canvas!                                 ##
  axes = create_canvas_and_axes(canvas_width = 12,
                                canvas_height = 10, 
                                title = "Hello, I am Zyxxy!", 
                                axes = axes)

  set_default_line_style(linewidth=2)
  #######################################################
  # Now let's draw the shapes!                         ##

  # Let's start with the whiskers! They need to be behind the head, 
  # so we will need to move these lines before the line
  # that draws the head of the mouse!
  draw_a_segment(axes, start_x=6, start_y=3, turn=3, length=2)
  draw_a_segment(axes, start_x=6, start_y=3, turn=4, length=2)
  draw_a_segment(axes, start_x=6, start_y=3, turn=9, length=2)
  draw_a_segment(axes, start_x=6, start_y=3, turn=8, length=2)

  # let's draw the head of the mouse
  draw_a_triangle(ax=axes, tip_x=6, tip_y=1, height=6, width=6, colour='plum')
  # ... and the nose, using a triangle with the same tip
  draw_a_triangle(ax=axes, tip_x=6, tip_y=1, height=1, width=1, colour='black')
  # ... and the ears
  draw_a_circle(ax=axes, centre_x=3, centre_y=7, radius=2, colour='plum')
  draw_a_circle(ax=axes, centre_x=9, centre_y=7, radius=2, colour='plum')
  # ... and the eyes, white circles with black circles on top
  left_eye_white = draw_a_circle(ax=axes, centre_x=5, centre_y=5, radius=0.8, colour='white')
  right_eye_white= draw_a_circle(ax=axes, centre_x=7, centre_y=5, radius=0.8, colour='white')
  left_eye_black = draw_a_circle(ax=axes, centre_x=5, centre_y=5, radius=0.5, colour='black')
  right_eye_black= draw_a_circle(ax=axes, centre_x=7, centre_y=5, radius=0.5, colour='black')

  return left_eye_white, right_eye_white, left_eye_black, right_eye_black
示例#6
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def example_croc(axes=None):

  #########################################################
  ## CREATING THE DRAWING!                               ##
  #########################################################
  # Creating the canvas!                                 ##
  axes = create_canvas_and_axes(canvas_width = 190,
                                canvas_height = 100,
                                background_colour = 'PastelBlue', 
                                axes = axes)

  #######################################################
  # Now let's draw the shapes!                         ##
  
  left_body = 30
  bottom_body = 30
  right_body = 120
  right_head = 180
  top_body = 50
  top_head = bottom_body+15
  tail_right = 35 + left_body
  tail_width = 10
  centre_backside = 50
  r_nostrils = 3
  lip_y = 0.5 * (top_head + bottom_body)
  lip_r = 3 
  teeth_length = 5
  nb_teeth = 7
  leg_width = 10
  leg_length = 15
  feet_height = 5
  feel_length = 20
 
  #######################################################
  # Now let's draw the shapes!                         ## 

  set_default_patch_style(colour='BrightGreen')

  # legs 

  leg_layer_nb = new_layer()

  for shift, colour in [[0, 'green'], [-17, 'BrightGreen']]:
    for x in [50, 100]:
      # draw a leg
      draw_a_rectangle(ax=axes, left=x+shift, top=bottom_body, height=leg_length, width=leg_width, colour=colour)
      # draw a feet
      draw_a_sector(ax=axes, centre_x=x+shift+feel_length/2, centre_y=bottom_body-leg_length, radius=feel_length/2, stretch_y=feet_height/(feel_length/2), angle_start=9, angle_end=15, colour=colour)

  # body

  body_layer_nb = new_layer()

  draw_a_rectangle(ax=axes, left=left_body, bottom=bottom_body, height=top_body-bottom_body, width=right_body-left_body)

  # backside
  backside_clip_contour = build_a_circle(radius=centre_backside-bottom_body) + [left_body, centre_backside]
  draw_a_sector( ax=axes, centre_x=left_body, 
                 centre_y=(2*centre_backside-bottom_body-tail_width+top_body)/2, 
                 radius=(2*centre_backside-bottom_body-tail_width+top_body)/2-bottom_body, 
                 radius_2=(2*centre_backside-bottom_body-tail_width-top_body)/2, 
                 angle_start=6, angle_end=12, clip_outline=backside_clip_contour)

  # tail
  draw_a_rectangle(ax=axes, left=left_body, top=2*centre_backside-bottom_body, height=tail_width, width=tail_right-left_body)

  draw_a_sector(ax=axes, centre_x=tail_right, centre_y=2*centre_backside-bottom_body, radius=tail_width,angle_start=3, angle_end=6)

  # lower teeth and jaw
  upper_teeth = build_a_zigzag(width=right_head - (right_body-lip_r), height=teeth_length, angle_start=3, nb_segments=2*nb_teeth) + [right_body-lip_r, lip_y]

  lower_teeth = upper_teeth[1:-1] + [0, teeth_length]
  draw_a_polygon(ax=axes, contour=lower_teeth, colour='white')

  draw_a_rectangle(ax=axes, left=right_body, bottom=bottom_body, height=lip_y-bottom_body, width=right_head-right_body)

  # upper jaw
  upper_jaw_layer_nb = new_layer()

  draw_a_rectangle(ax=axes, left=right_body, bottom=lip_y, height=top_head-lip_y, width=right_head-right_body)

  # ... and the eyes, white circles with black circles on top
  eye_y = top_body
  for radius, colour in [[8, 'BrightGreen'], [5, 'white'], [3, 'black']]:
    for eye_x in [right_body, right_body+12]:
      draw_a_circle(ax=axes, centre_x=eye_x, centre_y=eye_y, radius=radius, colour=colour)

  # ... and the eyelids. Saving them in array for future use   
  eyelids = []
  eyelid_width = 12
  for eye_x in [right_body, right_body+12]:
    for td in [-1, 1]:
      mid_y = td * eyelid_width / 2
      eyelid = draw_an_eye(ax=axes, centre_x=eye_x, centre_y=eye_y, width=eyelid_width, depth_1=mid_y, depth_2=mid_y, colour='green')
      eyelids.append(eyelid)

  # ... and the nostrils
  nostril_y = top_head
  for nostril_x in [right_head-r_nostrils, right_head-3*r_nostrils]:
    draw_a_circle(ax=axes, centre_x=nostril_x, centre_y=nostril_y, radius=r_nostrils)
    draw_a_circle(ax=axes, centre_x=nostril_x, centre_y=nostril_y, radius=1, colour='green')

  # ... and the teeth and the lip
  # teeth
  draw_a_polygon(ax=axes, contour=upper_teeth, colour='white')
  # upper lip
  lipline_arc = build_an_arc(radius=lip_r, angle_start=6, angle_end=9) + [right_body-lip_r, lip_y+lip_r]
  lipline = link_contours([[right_head, lip_y]], lipline_arc)
  draw_a_broken_line(ax=axes, contour=lipline, colour='green', linewidth=2)

  upper_jaw_diamond = [right_body-lip_r, lip_y+lip_r]

  return leg_layer_nb, body_layer_nb, upper_jaw_layer_nb, eyelids, upper_jaw_diamond
示例#7
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def example_yellow_cat(axes=None, cat_colour = 'Yellow', background_colour = 'SeaWave'):
  #######################################################
  ## CREATING THE DRAWING!                             ##
  #######################################################
  ## Creating the canvas!                              ##  
  axes = create_canvas_and_axes(canvas_width = 120,
                                canvas_height = 120,
                                background_colour = background_colour, 
                                axes = axes,
                                make_symmetric = 'x')
  #######################################################
  # Now let's draw the shapes!                         ##

   # settings
  set_default_outline_style(linewidth=2)
  set_default_line_style(linewidth=2)
  set_default_patch_style(colour=cat_colour)#darkorange

  # the tail
  tail_length = [30, 22, 20, 12, 10]
  for i, tl in enumerate(tail_length): 
    triangle_tail = draw_a_triangle(ax=axes, tip_x=38, tip_y=30, height=tl, width=tl/2, turn=7)
    if i%2 == 1:
      triangle_tail.set_style(colour='black')


  # the body
  height_body = [60, 57, 54, 38, 35, 19, 16]
  for i, bh in enumerate(height_body):
    triangle_body = draw_a_triangle(ax=axes, tip_x=0, tip_y=60, height=bh, width=bh, turn=6)
    if i%2 == 1:
      triangle_body.set_style(colour='black')

  # the feet
  draw_a_triangle(ax=axes, tip_x=-12, tip_y=20, height=20, width=20, turn=6)
  draw_a_triangle(ax=axes, tip_x= 12, tip_y=20, height=20, width=20, turn=6)

  head_layer = new_layer()

  # the ears
  et = 4.5
  draw_a_triangle(ax=axes, tip_x=-30, tip_y=114, height=50, width=30, turn=et)
  draw_a_triangle(ax=axes, tip_x=-22, tip_y=106, height=40, width=24, colour='black', turn=et)
  draw_a_triangle(ax=axes, tip_x= 30, tip_y=114, height=50, width=30, turn=-et)
  draw_a_triangle(ax=axes, tip_x= 22, tip_y=106, height=40, width=24, colour='black', turn=-et)

  #head
  head_circle = draw_a_circle(ax=axes, centre_x=0, centre_y=85, radius=25)

  #from this line, the default colour is black
  set_default_patch_style(colour='black')

  # neck
  draw_a_circle(ax=axes, centre_x=0, centre_y=60, radius=1)
  neck_coords = [0, 60]

  # stripes on the face

  # vertical stripes
  for c, b in [[-10, 101], [-5, 100], [0, 101]]:
    draw_a_rectangle(ax=axes, centre_x=c, bottom=b, width=3, height=20, clip_outline = head_circle)

  # horizontal stripes
  for c, x in [[70, 16], [75, 15], [80, 18]]:
    draw_a_rectangle(ax=axes, right=-x, centre_y=c, width=20, height=3, clip_outline = head_circle)
    draw_a_rectangle(ax=axes, left=+x, centre_y=c, width=20, height=3, clip_outline = head_circle)
    
  # eyes
  eyes = []
  for centre_x in [-12, 12]:
    eye_white= draw_an_eye(ax=axes, centre_x=centre_x, centre_y=90, width=16, depth_1=-8, depth_2=8, colour='white')
    draw_an_ellipse(ax=axes, centre_x=centre_x, centre_y=90, width=8, height=16, colour='BrightGreen', clip_outline = eye_white)
    draw_a_circle(ax=axes, centre_x=centre_x, centre_y=90, radius=3, colour='black', clip_outline = eye_white)
    # the following line is needed for animation
    eyes.append(eye_white)

  # nose
  draw_a_triangle(ax=axes, tip_x=0, tip_y=72, height=8, width=10, colour='BubblePink')

  # smile
  draw_a_segment(ax=axes, start_x=0, start_y=72, length=7, turn=6)
  smile = draw_a_smile(ax=axes, centre_x=0, centre_y=69, depth=4, width=20)

  return head_layer, neck_coords, eyes, smile
from zyxxy_canvas import create_canvas_and_axes, show_drawing_and_save_if_needed
from zyxxy_all_EXAMPLES import example_japanese_flag
from zyxxy_shape_functions import draw_a_circle

#######################################################
# Creating the canvas!                               ##
create_canvas_and_axes(canvas_width=30,
                       canvas_height=20,
                       tick_step=2,
                       title="My first Zyxxy drawing",
                       model=example_japanese_flag,
                       outlines_colour="cyan")

#######################################################
# Now let's draw the shapes!                         ##
draw_a_circle(centre_x=8, centre_y=8, radius=8, colour='crimson')

show_drawing_and_save_if_needed()
示例#9
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def example_penguins(axes=None):
  
  def draw_half_circle(turn, **kwargs):
    draw_a_sector(angle_start=turn, angle_end=turn+6, **kwargs)
  #######################################################
  # Creating the canvas!                               ##  
  create_canvas_and_axes(canvas_width = 320,
                                canvas_height = 180,
                                title = "Penguin Conversation",
                                #tick_step = 10,
                                #model="https://i.pinimg.com/564x/fc/90/7d/fc907dc3638cfd64aa2c3ba56e216b92.jpg",
                                background_colour = 'lightskyblue',
                                axes=axes)

  #######################################################
  # Now let's draw the shapes!                         ##
  # snowflakes
  for s in range(150):
    draw_a_star(centre_x=random_number(max = get_width(axes)), 
                       centre_y=random_number(max = get_height(axes)), 
                       radius_1=1, radius_2=3, ends_qty=8, colour='aliceblue')

  # ice
  ice_colours = ['aliceblue', 'steelblue', 'skyblue']
  for s in range(1500):
    draw_a_triangle(tip_x=random_number(max = get_width(axes)), 
                    tip_y=0.2*random_number(max = get_height(axes)),
                    height=random_number(30), 
                    width=random_number(15), 
                    turn=random_element(range(2, 11)),
                    colour = random_element(ice_colours)) 

  # penguins!

  # the penguin on the left
  # body
  draw_a_circle(centre_x=60, centre_y=40, radius=20, colour='white')
  # feet
  draw_half_circle(centre_x=54, centre_y=16, radius=6, colour='orangered', turn=8.5)
  draw_half_circle(centre_x=66, centre_y=16, radius=6, colour='orangered', turn=9.5)
  # wings
  draw_half_circle(centre_x=31, centre_y=60, radius=30, colour='black', turn=2)
  draw_half_circle(centre_x=89, centre_y=60, radius=30, colour='black', turn=4)
  # head
  draw_a_circle(centre_x=60, centre_y=80, radius=15, colour='black')
  # eyes
  draw_a_circle(centre_x=55, centre_y=85, radius=3, colour=None, outline_colour='white', outline_linewidth=2)
  draw_a_circle(centre_x=65, centre_y=85, radius=3, colour=None, outline_colour='white', outline_linewidth=2)
  # beck
  draw_a_sector(centre_x=58, centre_y=76, angle_start=0, angle_end=3, radius=6, stretch_x=1.5, turn=0.5, colour='orangered')

  # the penguin on the right
  # first foot 
  draw_half_circle(centre_x=270, centre_y=16, radius=6, colour='orangered', turn=9)
  # body - white
  draw_half_circle(centre_x=280, centre_y=50, radius=30, colour='white', turn=5)
  # second foot 
  draw_half_circle(centre_x=280, centre_y=15, radius=6,  colour='orangered', turn=8)
  # body - black
  draw_half_circle(centre_x=290, centre_y=50, radius=30, colour='black', turn=5)
  # beck
  draw_half_circle(centre_x=255, centre_y=75, radius=6, colour='orangered', turn=8 + 1/2)
  # head
  draw_a_circle(centre_x=270, centre_y=80, radius=15, colour='black')
  # an eye
  draw_a_circle(centre_x=263, centre_y=85, radius=3, colour=None, outline_colour='white', outline_linewidth=2)

  show_drawing_and_save_if_needed()
from zyxxy_canvas import create_canvas_and_axes, show_drawing_and_save_if_needed
from zyxxy_all_EXAMPLES import example_japanese_naval_flag
from zyxxy_shape_functions import draw_a_circle, draw_a_triangle

#######################################################
# Creating the canvas!                               ##
create_canvas_and_axes(canvas_width=30,
                       canvas_height=20,
                       tick_step=2,
                       title="Flag Of Japanese Navy",
                       model=example_japanese_naval_flag
                       #, outlines_colour = "cyan"
                       )

draw_a_circle(centre_x=20, centre_y=12, radius=6, colour='crimson')
for i in range(3):
    draw_a_triangle(tip_x=9,
                    tip_y=7,
                    height=30,
                    width=6,
                    turn=i * 12 / 3,
                    colour='crimson')

show_drawing_and_save_if_needed()
示例#11
0
def example_japanese_flag(axes=None):
  create_canvas_and_axes(canvas_width=30, canvas_height=20, axes=axes)
  draw_a_circle(centre_x=15, centre_y=10, radius=6, colour='crimson')   
  show_drawing_and_save_if_needed()
示例#12
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triangle_height_2 = 7

outline_linewidth = 1.5

set_default_outline_style(linewidth=2*outline_linewidth) # because outline is usually behind

layers_1 = new_layers_outline_behind()
crescent_colours = ['deepskyblue', 'royalblue']
for i in range(crescents_qty):
  crsc = draw_a_crescent(centre_x=0, centre_y=distance_crescents, width=2*tan_hours(12/(2*crescents_qty))*distance_crescents, depth_1=1.2, depth_2=2, colour=crescent_colours[i%2], stretch_y=3)
  crsc.turn(turn=12/crescents_qty*i, diamond_override=[0,0])

layers_2 = new_layers_outline_behind()

for i in range(crescents_qty):
  circle = draw_a_circle(centre_x=0, centre_y=distance_circles, radius=1, colour='palegreen')
  circle.turn(turn=12/crescents_qty*(i+0.5), diamond_override=[0,0])

layers_3 = new_layers_outline_behind()
set_default_patch_style(colour="yellow")

for i in range(8):
  triangles = [draw_a_triangle(tip_x=0, tip_y=distance_triangles, height=triangle_height, width=3.5, turn=6) for _ in range(4)]
  for t, angle in enumerate([-0.19, -0.1, 0.1, 0.19]):
    triangles[t].turn(turn=angle, diamond_override=[0,0])

  big_triangles = [draw_a_triangle(tip_x=0, tip_y=distance_triangles, height=triangle_height, width=13, turn=6) for _ in range(2)]
  for t, lr in enumerate([-1, 1]):
    big_triangles[t].turn(turn=-lr*.1, diamond_override=[0, distance_triangles-triangle_height])
    big_triangles[t].turn(turn=lr*.5, diamond_override=[0,0])
示例#13
0
                            make_symmetric = True,
                            title_font_size=figure_params['font_size']*1.5,
                            axes_label_font_size=figure_params['font_size'],
                            axes_tick_font_size=figure_params['font_size'],
                            axes=ax)

colour = {'angle' : 'violet', 'sinus' : 'dodgerblue', 'cosinus' : 'blueviolet', 'hypothenuse' : 'crimson'}

start_trigo = 1.5
wave_factor = 6
set_default_outline_style(linewidth=3)
set_default_line_style(linewidth=3)

segments = [None for _ in range(7)]

draw_a_circle(centre_x=0, centre_y=0, radius=1)

sector = draw_a_sector(centre_x=0, centre_y=0, radius=.2, angle_start=0, angle_end=0, colour=colour['angle'])
segments[0] = draw_a_broken_line(contour=[[0, 0]], colour=colour['hypothenuse'])

set_default_outline_style(linewidth=0)

# sin
segments[1] = draw_a_broken_line(contour=[[0, 0]], colour=colour['cosinus'])
segments[2] = draw_a_broken_line(contour=[[0, 0]], colour=colour['sinus'])
segments[3] = draw_a_broken_line(contour=[[0, 0]], colour='black')
wave_sinus = draw_a_wave(start_x=start_trigo, start_y=1, width=1, height=2, angle_start=0, nb_waves=1, colour=colour['sinus'], turn=3)

dot_sinus = draw_a_circle(centre_x=0, centre_y=0, radius=.1, colour=colour['sinus'])
square_sinus = draw_a_square(centre_x=0, centre_y=0, side=.2, colour=colour['sinus'])
draw_a_square(left=0,
              bottom=height_ground,
              side=aquarium_side,
              colour='PastelBlue')

# fish
draw_a_crescent(centre_x=10,
                centre_y=13,
                width=8,
                depth_1=1,
                depth_2=-1,
                colour='orange')
draw_a_triangle(tip_x=6, tip_y=13, width=1, height=2, turn=9, colour='orange')
draw_a_circle(centre_x=12,
              centre_y=13,
              radius=.3,
              colour='black',
              outline_linewidth=0)

# an egg
an_egg = draw_an_egg(power=3,
                     height_widest_point=3,
                     width=4,
                     height=5,
                     tip_x=30,
                     tip_y=height_ground,
                     colour='crimson')
draw_a_sector(centre_x=30,
              centre_y=stripe_radius + (3 + height_ground),
              angle_start=3,
              angle_end=9,
示例#15
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# the body
set_default_patch_style(colour="yellow", layer_nb=2)
set_default_outline_style(linewidth=4,   layer_nb=1)

body = draw_an_egg(ax=ax, power=3, height_widest_point=3, width=4, height=5, tip_x=0, tip_y=14, stretch_x=3, stretch_y=-3)

for y in [1.5, 6, 10.5]:  
  draw_a_rectangle(ax=ax, width=16, height=2, centre_x=0, centre_y=y, opacity=0.3, clip_outline=body, colour='orange', outline_linewidth=0)

# the head

set_default_patch_style(  layer_nb=4)
set_default_outline_style(layer_nb=3)

head = draw_a_circle(ax=ax, centre_x=0, centre_y=14, radius=4.2)

# the ears, using the "eye" shape
draw_a_crescent(ax=ax, width=6, depth_1=1, depth_2=3, centre_x=-4, centre_y=16, turn=9)
draw_a_crescent(ax=ax, width=6, depth_1=1, depth_2=3, centre_x=4, centre_y=16, turn=3)

new_layer()

# the stripes
for y in [10.5, 15]:  
  draw_a_rectangle(ax=ax, width=16, height=2, centre_x=0, centre_y=y, opacity=0.3, clip_outline=head, colour='orange', outline_linewidth=0)

# change outlines style
set_default_outline_style(linewidth=2)

# the eyes
                     outline_linewidth=0)
    draw_a_rectangle(width=30,
                     height=grh,
                     centre_x=0,
                     centre_y=gradient_bottom + i * grh,
                     opacity=1,
                     clip_outline=tail_shape,
                     colour=gc,
                     outline_linewidth=0)

# a vertical line
draw_a_segment(start_x=0, start_y=eye_y, turn=6, length=1.5)

for lr in [-1, 1]:
    # an eye
    draw_a_circle(centre_x=lr * 3, centre_y=eye_y, radius=1, colour='black')

    # mouth
    draw_a_smile(centre_x=lr * aw / 2,
                 centre_y=eye_y - 1.5,
                 width=aw,
                 depth=0.5)

    # whiskers
    draw_a_smile(centre_x=lr * (6 + whiskers_length / 2),
                 centre_y=eye_y - 0.5,
                 width=whiskers_length,
                 depth=-0.5)
    s2 = draw_a_smile(centre_x=lr * (6 + whiskers_length / 2),
                      centre_y=eye_y + 0.8,
                      width=whiskers_length,