def draw_circular_roman(
ctx: cairo.Context,
rng: Generator,
pos_x: float,
pos_y: float,
radius_outer: float,
radius_inner: float,
):
chunks = rng.integers(6, 16)
_calendar_base(ctx, pos_x, pos_y, radius_outer, radius_inner, chunks)
ctx.select_font_face("Noto Sans Symbols")
font_size = 0.8 * (radius_outer - radius_inner)
ctx.set_font_size(font_size)
angle_offset = pi / chunks
for i, (x, y) in enumerate(
points_along_arc(
pos_x,
pos_y,
(radius_inner + radius_outer) / 2.0,
angle_offset,
angle_offset + tau,
chunks,
),
1,
):
with translation(ctx, x, y), rotation(ctx, (i * tau / chunks) +
(pi / 2) - angle_offset):
roman = int_to_roman(i)
extents = ctx.text_extents(roman)
ctx.move_to(-1 * extents.width / 2.0, extents.height / 2.0)
ctx.show_text(roman)
ctx.new_path()
def fill(
self,
ctx: cairo.Context,
rng: Generator,
x1: float,
y1: float,
x2: float,
y2: float,
):
with source(ctx, self.stops[-1].to_pattern()):
ctx.fill_preserve()
# Orient the canvas so that our gradient goes straight in direction of +Y.
gradient_angle = angle((x1, y1), (x2, y2)) - (pi / 2)
with translation(ctx, x1, y1), rotation(ctx, gradient_angle), source(
ctx, self.stops[0].to_pattern()):
# We translated and rotated the canvas, so our gradient control
# vector is now from (0, 0) straight up:
grad_control_y = distance((x1, y1), (x2, y2))
# Get a bounding box of what needs to be filled:
start_x, start_y, end_x, end_y = ctx.fill_extents()
ctx.new_path()
for cx, cy, cr in self.pattern.func(
rng,
(start_x, start_y),
(end_x, end_y),
(0, 0),
(0, grad_control_y),
self.dot_radius,
):
ctx.arc(cx, cy, cr, 0, tau)
ctx.fill()
def render(self, text: str):
lines = text.splitlines()
for i, line in enumerate(lines):
y_offset = self.blockheight * i
with cairoctx.translation(self.ctx, self.scale * 3,
self.scale * 3 + y_offset):
# self.debug_square()
self.render_line(line)
def letter(self, letter: str):
color_top, color_bot = ALPHABET_PATTERN[letter.upper()]
self.ctx.move_to(0, 0)
self.rectangle(color_bot)
with cairoctx.translation(self.ctx, 0,
-(self.rect_height + self.margin)):
self.ctx.move_to(0, 0)
self.rectangle(color_top)
def letter(self, letter: str):
color_top, color_bot = ALPHABET_PATTERN[letter.upper()]
self.ctx.move_to(0, 0)
self.triangle(color_bot)
# Move up 2x diag_offset and flip the canvas upside-down
with cairoctx.translation(self.ctx, 0, -2 * self.diag_offset):
self.ctx.move_to(0, 0)
with cairoctx.rotation(self.ctx, pi):
self.triangle(color_top)
def render_line(self, line: str):
for i, char in enumerate(line):
if char == " ":
continue
orient_idx = i % 4
block_offset = i // 4
orient = self.orientations[orient_idx]
x_offset = block_offset * self.blockwidth + orient[0][0]
y_offset = orient[0][1]
with cairoctx.translation(self.ctx, x_offset, y_offset):
with cairoctx.rotation(self.ctx, orient[1]):
self.letter(char)
def draw(self, ctx: cairo.Context):
with translation(ctx, self.pos[0], self.pos[1]):
with rotation(ctx, self.rotation):
with source(ctx, self.color.to_pattern()):
ctx.arc(0, 0, self.size, 0, math.tau)
ctx.fill()
if self.iris:
self.iris.draw(ctx, relative_to=self.pos)
self.pupil.draw(ctx, relative_to=self.pos)
if self.eyelids:
self.eyelids.draw(ctx, self.size, relative_to=self.pos)
def _calendar_mapped(
ctx: cairo.Context,
rng: Generator,
pos_x: float,
pos_y: float,
radius_outer: float,
radius_inner: float,
mapping: Sequence[str],
font_family: str = "Noto Sans Symbols",
):
chunks = rng.integers(6, min(len(mapping), 24))
_calendar_base(ctx, pos_x, pos_y, radius_outer, radius_inner, chunks)
ctx.select_font_face(font_family)
font_size = 0.8 * (radius_outer - radius_inner)
ctx.set_font_size(font_size)
symbols = rng.choice(mapping, size=chunks, replace=False)
angle_offset = pi / chunks
for i, (x, y) in enumerate(
points_along_arc(
pos_x,
pos_y,
(radius_inner + radius_outer) / 2.0,
angle_offset,
angle_offset + tau,
chunks,
),
1,
):
with translation(ctx, x, y), rotation(ctx, (i * tau / chunks) +
(pi / 2) - angle_offset):
symbol = symbols[i - 1]
extents = ctx.text_extents(symbol)
ctx.move_to(-1 * extents.width / 2.0, extents.height / 2.0)
ctx.show_text(symbol)
ctx.new_path()