def draw_player(cr: cairo.Context, player: Player) -> None:
with save_context(cr):
cr.translate(player.x, player.y)
with save_context(cr):
cr.rotate(player.rotation)
# draw player
cr.set_source_rgb(0, 0, 0)
cr.arc(0, 0, 10, 0, math.tau)
cr.fill()
# draw arms
cr.move_to(2, -10)
cr.rel_line_to(12, 0)
cr.move_to(2, 10)
cr.rel_line_to(12, 0)
cr.stroke()
# draw health
cr.set_source_rgb(1, 1, 1)
cr.rectangle(-20, -35, 40, 8)
cr.fill()
# cr.set_source_rgb(.1, .9, .2)
cr.set_source_rgb(2 * (1 - player.health), 2 * player.health, 0)
cr.rectangle(-20, -35, 40 * player.health, 8)
cr.fill()
cr.set_line_width(1)
cr.set_source_rgb(0, 0, 0)
cr.rectangle(-20, -35, 40, 8)
cr.stroke()
def rotation(ctx: cairo.Context, radians: float):
ctx.rotate(radians)
try:
yield
finally:
ctx.rotate(-radians)
def draw_trains(self, layout: Layout, cr: Context):
for train in layout.trains.values():
car_start = train.position
annotation = train.meta.get("annotation")
for i, car in enumerate(train.cars):
front_bogey_offset, rear_bogey_offset = car.bogey_offsets
bogey_spacing = rear_bogey_offset - front_bogey_offset
front_bogey_position = car_start - front_bogey_offset
front_bogey_xy = self.transform_track_point(front_bogey_position)
rear_bogey_position, rear_bogey_xy = self.point_back(
front_bogey_position, bogey_spacing
)
cr.save()
cr.translate(front_bogey_xy[0], front_bogey_xy[1])
cr.rotate(
math.pi
+ math.atan2(
front_bogey_xy[1] - rear_bogey_xy[1],
front_bogey_xy[0] - rear_bogey_xy[0],
)
)
cr.set_source_rgb(*hex_to_rgb(train.meta.get("color", "#a0a0ff")))
if i == 0 and annotation:
cr.move_to(0, -10)
cr.set_font_size(5)
cr.show_text(annotation)
cr.set_line_width(4)
cr.move_to(-front_bogey_offset, 0)
cr.line_to(car.length - front_bogey_offset, 0)
cr.stroke()
cr.set_line_width(6)
cr.move_to(1 - front_bogey_offset, 0)
cr.line_to(car.length - front_bogey_offset - 1, 0)
cr.stroke()
if i == 0 and train.lights_on:
cr.set_source_rgba(1, 1, 0.2, 0.5)
for y in (-2.5, 2.5):
cr.move_to(-front_bogey_offset - 1, y)
cr.arc(
-front_bogey_offset - 1,
y,
10,
6 / 7 * math.pi,
math.pi * 8 / 7,
)
cr.close_path()
cr.fill()
cr.restore()
car_start = rear_bogey_position - (car.length - rear_bogey_offset + 1)
def illustrate(self, surface):
if self.art != None:
illustration = Context(surface)
illustration.scale(0.6, 0.6)
illustration.translate(self.w / 6, self.h / 6)
self.art.render_cairo(illustration)
illustration.translate(self.w * 4 / 3, self.h * 4 / 3)
illustration.rotate(pi)
self.art.render_cairo(illustration)
def draw_piece(self, piece: Piece, cr: Context, drawing_options: DrawingOptions):
if not piece.position:
return
cr.save()
cr.translate(piece.position.x, piece.position.y)
cr.rotate(piece.position.angle)
piece.draw(cr, drawing_options)
relative_positions = piece.relative_positions()
for anchor_name, anchor in piece.anchors.items():
# if anchor.position != piece.position + relative_positions[anchor_name] + Position(0, 0, math.pi):
# cr.move_to(0, 0)
# cr.line_to(anchor.position.x, anchor.position.y)
# cr.stroke()
cr.save()
cr.translate(
relative_positions[anchor_name].x, relative_positions[anchor_name].y
)
cr.rotate(relative_positions[anchor_name].angle)
if len(anchor) == 2:
cr.set_source_rgb(1, 0.5, 0.5)
else:
cr.set_source_rgb(0.5, 1, 0.5)
next_piece, next_anchor_name = anchor.next(piece)
cr.arc(
0,
0,
3
if (piece.placement and anchor_name == piece.anchor_names[0])
or (
next_piece
and next_piece.placement
and next_anchor_name == next_piece.anchor_names[0]
)
else 1,
0,
math.tau,
)
cr.fill()
cr.restore()
cr.restore()
def illustrate(self, surface):
if self.suit != None:
suits = Context(surface)
suits.scale(0.5, 0.5)
suits.translate(self.w / 8, self.h / 12)
self.suit.render_cairo(suits)
suits.translate(self.w * 7 / 4, self.h * 11 / 6)
suits.rotate(pi)
self.suit.render_cairo(suits)
if self.art != None:
illustration = Context(surface)
sf = self.w / self.art.get_dimension_data()[2]
illustration.scale(sf, sf)
self.art.render_cairo(illustration)
def draw_sensor(
self,
sensor: Sensor,
layout: Layout,
cr: Context,
drawing_options: DrawingOptions = None,
):
if not sensor.position:
return
cr.save()
cr.translate(sensor.position.x, sensor.position.y)
cr.rotate(sensor.position.angle)
sensor.draw(cr, drawing_options or self.drawing_options)
cr.restore()
def arrowhead(context: cairo.Context,
size: float,
position: Point,
direction: Point = None,
front_angle: float = math.pi / 4,
back_angle: float = math.pi / 2):
'''Add an arrow head to the current path, starting at the current point.'''
if direction is None:
direction = Point(0, 1)
halfwidth = math.tan(front_angle / 2) * size
back_height = halfwidth / math.tan(back_angle / 2)
context.move_to(*position)
context.rotate(-math.atan2(direction.x, direction.y))
context.rel_line_to(halfwidth, -back_height)
context.rel_line_to(-halfwidth, size)
context.rel_line_to(-halfwidth, -size)
context.fill()
def screen(self, base_w, base_h, ctx: cairo.Context, display_id: int):
if display_id == 0:
self.decode_screen()
ctx.translate(base_w * self._scale / 2, base_h * self._scale / 2)
ctx.rotate(-radians(self._screen_rotation_degrees))
if self._screen_rotation_degrees == 90 or self._screen_rotation_degrees == 270:
ctx.translate(-base_h * self._scale / 2, -base_w * self._scale / 2)
else:
ctx.translate(-base_w * self._scale / 2, -base_h * self._scale / 2)
ctx.scale(self._scale, self._scale)
if display_id == 0:
ctx.set_source_surface(self._upper_image)
else:
ctx.set_source_surface(self._lower_image)
ctx.get_source().set_filter(cairo.Filter.NEAREST)
ctx.paint()
if self._after_render_hook:
self._after_render_hook(ctx, display_id)
def draw_speed_limit(ctx: Context, surface_marking: SurfaceMarking, limit: int,
start_zone: bool):
"""Draw a speed limit on the road. Add a cross if it is the end of a speed limit zone.
Args:
start_zone: Is this speed limit the start or end?
"""
ctx.translate(surface_marking.center.x, surface_marking.center.y
) # Translate to the center point of the surface marking
ctx.rotate(surface_marking.orientation)
ctx.translate(0, surface_marking.width / 2) # Translate to the middle
# Position text and scale it
ctx.rotate(-math.pi / 2) # rotate by 90deg
ctx.scale(1, -1) # mirror y-axis to display text correctly
ctx.scale(0.7245, 1.8506) # scale text to match rule book
# Set font options
ctx.select_font_face("OpenDinSchriftenEngshrift", cairo.FONT_SLANT_NORMAL)
ctx.set_font_size(0.4)
ctx.text_path(str(limit))
ctx.set_line_width(0.01)
# Draw text
_, _, text_width, text_height, _, _ = ctx.text_extents(str(limit))
ctx.fill_preserve()
ctx.stroke()
if not start_zone:
# Draw cross
padding = 0.025
ctx.set_line_width(0.03)
ctx.move_to(-padding, padding)
ctx.line_to(text_width + padding, -text_height - padding)
ctx.stroke()
ctx.move_to(-padding, -text_height - padding)
ctx.line_to(text_width + padding, padding)
ctx.stroke()
def _to_png(self,
font,
font_position=None,
dst=None,
limit=800,
size=1500,
tab_width=1500,
padding_characters=""):
"""Use HB, FreeType and Cairo to produce a png for a table.
Parameters
----------
font: DFont
font_position: str
Label indicating which font has been used.
dst: str
Path to output image. If no path is given, return in-memory
"""
# TODO (M Foley) better packaging for pycairo, freetype-py
# and uharfbuzz.
# Users should be able to pip install these bindings without needing
# to install the correct libs.
# A special mention to the individuals who maintain these packages. Using
# these dependencies has sped up the process of creating diff images
# significantly. It's an incredible age we live in.
y_tab = int(1500 / 25)
x_tab = int(tab_width / 64)
width, height = 1024, 200
cells_per_row = int((width - x_tab) / x_tab)
# Compute height of image
x, y, baseline = x_tab, 0, 0
for idx, row in enumerate(self._data[:limit]):
x += x_tab
if idx % cells_per_row == 0:
y += y_tab
x = x_tab
height += y
height += 100
# draw image
Z = ImageSurface(FORMAT_ARGB32, width, height)
ctx = Context(Z)
ctx.rectangle(0, 0, width, height)
ctx.set_source_rgb(1, 1, 1)
ctx.fill()
# label image
ctx.set_font_size(30)
ctx.set_source_rgb(0.5, 0.5, 0.5)
ctx.move_to(x_tab, 50)
ctx.show_text("{}: {}".format(self.table_name, len(self._data)))
ctx.move_to(x_tab, 100)
if font_position:
ctx.show_text("Font Set: {}".format(font_position))
if len(self._data) > limit:
ctx.set_font_size(20)
ctx.move_to(x_tab, 150)
ctx.show_text(
"Warning: {} different items. Only showing most serious {}".
format(len(self._data), limit))
hb.ot_font_set_funcs(font.hbfont)
# Draw glyphs
x, y, baseline = x_tab, 200, 0
x_pos = x_tab
y_pos = 200
for idx, row in enumerate(self._data[:limit]):
string = "{}{}{}".format(padding_characters, row['string'],
padding_characters)
buf = self._shape_string(font, string, row['features'])
char_info = buf.glyph_infos
char_pos = buf.glyph_positions
for info, pos in zip(char_info, char_pos):
gid = info.codepoint
font.ftfont.load_glyph(gid, flags=6)
bitmap = font.ftslot.bitmap
if bitmap.width > 0:
ctx.set_source_rgb(0, 0, 0)
glyph_surface = _make_image_surface(
font.ftfont.glyph.bitmap, copy=False)
ctx.set_source_surface(
glyph_surface,
x_pos + font.ftslot.bitmap_left + (pos.x_offset / 64.),
y_pos - font.ftslot.bitmap_top - (pos.y_offset / 64.))
glyph_surface.flush()
ctx.paint()
x_pos += (pos.x_advance) / 64.
y_pos += (pos.y_advance) / 64.
x_pos += x_tab - (x_pos % x_tab)
if idx % cells_per_row == 0:
# add label
if font_position:
ctx.set_source_rgb(0.5, 0.5, 0.5)
ctx.set_font_size(10)
ctx.move_to(width - 20, y_pos)
ctx.rotate(1.5708)
ctx.show_text(font_position)
ctx.set_source_rgb(0, 0, 0)
ctx.rotate(-1.5708)
# Start a new row
y_pos += y_tab
x_pos = x_tab
Z.flush()
if dst:
Z.write_to_png(dst)
else:
img = StringIO()
Z.write_to_png(img)
return Image.open(img)
class Canvas:
def __init__(self,
width: int,
height: Optional[int] = None,
*,
normalise: bool = True):
if height is None:
height = width
self._width = width
self._height = height
self._surface = ImageSurface(FORMAT_ARGB32, width, height)
self._context = Context(self._surface)
self._normalise = normalise
if self._normalise:
self.scale(self._width, self._height)
@property
def width(self) -> int:
return self._width if not self._normalise else 1
@property
def height(self) -> int:
return self._height if not self._normalise else 1
# TODO depreciate
@property
def context(self) -> Context: # pragma: no cover
return self._context
def save(self) -> None:
self._context.save()
def restore(self) -> None:
self._context.restore()
# Transformation
def rotate(self, angle: float) -> None:
self._context.rotate(angle)
def translate(self, x: float, y: float) -> None:
self._context.translate(x, y)
def scale(self, width: int, height: int) -> None:
self._context.scale(width, height)
def set_line_width(self, width: float) -> None:
self._context.set_line_width(width)
# Colour functionality
def set_colour(self, colour: Colour) -> None:
self._context.set_source_rgba(colour.red, colour.blue, colour.green,
colour.alpha)
def set_grey(self, colour_value: float, alpha: float = 1) -> None:
colour = Colour(*(colour_value, ) * 3, alpha)
self.set_colour(colour)
def set_black(self) -> None:
self.set_colour(BLACK)
def set_white(self) -> None:
self.set_colour(WHITE)
def set_background(self, colour: Colour) -> None:
self._context.rectangle(0, 0, self.width, self.height)
self.set_colour(colour)
self._context.fill()
def set_line_cap(self, line_cap: LineCap) -> None:
self._context.set_line_cap(line_cap.value)
def set_line_join(self, line_join: LineJoin) -> None:
self._context.set_line_join(line_join.value)
def set_fill_rule(self, file_rule: FillRule) -> None:
self._context.set_fill_rule(file_rule.value)
# Render methods
def fill(self, preserve: bool = False) -> None:
if not preserve:
self._context.fill()
else:
self._context.fill_preserve()
def stroke(self, preserve: bool = False) -> None:
if not preserve:
self._context.stroke()
else:
self._context.stroke_preserve()
def clip(self) -> None:
self._context.clip()
def _draw_path(self, path: Iterable[Point], close_path: bool) -> None:
self._context.new_sub_path()
for p in path:
self._context.line_to(*p)
if close_path:
self._context.close_path()
def draw_path(self,
path: Iterable[PointType],
close_path: bool = False) -> None:
points = (p if isinstance(p, Point) else Point(*p) for p in path)
self._draw_path(points, close_path)
def draw_polygon(self, polygon: Polygon) -> None:
self._draw_path(polygon.points, close_path=True)
def draw_circle(self,
circle: Circle,
fill: bool = False,
stroke: bool = True) -> None:
self._context.new_sub_path()
self._context.arc(*circle.centre, circle.radius, 0, 2 * pi)
def write_to_png(self, file_name: str) -> None:
self._surface.write_to_png(file_name)
def draw(self, ctx: cairo.Context, **kwargs):
layer = kwargs.get('layer', 0)
opacity = kwargs.get('opacity', 1.0)
debug = kwargs.get('debug', False)
ctx.save()
pos, angle, width, length = self.pos, self.angle, self.width, self.length
# move origin to position of branch
ctx.translate(pos.x, pos.y)
# draw rectangle
ctx.save()
ctx.rotate(angle)
ctx.rectangle(0, -width / 2, length, width)
r, g, b = _get_branch_color(self)
ctx.set_source_rgba(r, g, b, opacity)
ctx.fill()
ctx.restore()
if debug:
# draw label
label = '{:d}'.format(self.index)
ctx.save()
ctx.set_source_rgba(1, 0, 0, opacity)
ctx.set_font_size(width * 0.1)
extents = ctx.text_extents(label)
ctx.rotate(angle)
ctx.translate(length / 2 - extents.width / 2, 0)
ctx.rotate(-angle)
ctx.show_text(label)
ctx.restore()
msg = '{}'.format(' '.join(self.text.upper()))
filler = '— '
if msg:
# draw message
ctx.save()
ft_size = width * 0.6
ctx.set_font_size(ft_size)
ctx.set_line_width(0.0002)
ctx.select_font_face('Impact', cairo.FontSlant.NORMAL,
cairo.FontWeight.BOLD)
max_width = 0.6 * length
msg_extents = ctx.text_extents(msg)
if msg_extents.width > max_width:
num_fillers = 0
while msg_extents.width > max_width:
if ft_size < 0.0001:
break
ft_size -= 0.00001
ctx.set_font_size(ft_size)
msg_extents = ctx.text_extents(msg)
else:
filler_extents = ctx.text_extents(filler)
num_fillers = max(
math.floor((length - msg_extents.width) /
filler_extents.x_advance / 2) - 2, 0)
full_msg = '{} {} {}'.format(filler * num_fillers, msg,
filler * num_fillers).strip()
extents = ctx.text_extents(full_msg)
if math.pi / 2 <= angle <= 3 * math.pi / 2:
ctx.rotate(angle + math.pi)
ctx.translate(-length, 0)
ctx.scale(1, 1)
ctx.translate(length / 2 - extents.width / 2,
extents.height / 2)
else:
ctx.rotate(angle)
ctx.translate(length / 2 - extents.width / 2,
extents.height / 2)
ctx.set_source_rgba(1, 1, 1, opacity)
ctx.text_path(full_msg)
ctx.fill()
ctx.stroke()
# give border
ctx.set_source_rgba(0, 0, 0, opacity)
ctx.text_path(full_msg)
ctx.stroke()
ctx.restore()
# draw point
# ctx.rotate(-angle)
# ctx.arc(0, 0, 0.004, 0, 2 * math.pi)
# ctx.set_source_rgb(0, 1, 0)
# ctx.fill()
# restore out of branch coordinates
ctx.restore()
def main(marker, paper, format, bbox, emergency, place, recipient, sender, text, sender_is_recipient, map_href):
"""
"""
mark = Location(*marker)
handle, filename = mkstemp(prefix='safetymap-', suffix='.pdf')
close(handle)
if paper == 'a4':
surf = PDFSurface(filename, 210*ptpmm, 297*ptpmm)
elif paper == 'letter':
surf = PDFSurface(filename, 8.5*ptpin, 11*ptpin)
ctx = Context(surf)
ctx.scale(ptpmm, ptpmm)
set_font_face_from_file(ctx, 'assets/HelveticaNeue.ttc')
if paper == 'a4':
draw_a4_master(ctx, format, map_href)
ctx.translate(19, 24)
elif paper == 'letter':
draw_letter_master(ctx, format, map_href)
ctx.translate(21, 18)
ctx.set_line_width(.25 * mmppt)
ctx.set_source_rgb(*md_gray)
ctx.set_dash([3 * mmppt])
reps = {'4up': 4, '2up-fridge': 2, 'poster': 0}
if reps[format]:
card_img, mark_point = get_map_image(bbox, 84, 39, mark)
for i in range(reps[format]):
# dashed outlines
ctx.move_to(0, 61)
ctx.line_to(0, 0)
ctx.line_to(173, 0)
ctx.line_to(173, 61)
#ctx.move_to(86, 0)
#ctx.line_to(86, 61)
ctx.stroke()
# two card sides and contents
draw_card_left(ctx, recipient, sender, text, sender_is_recipient)
ctx.translate(86.5, 0)
draw_card_right(ctx, card_img, mark_point, emergency, place)
ctx.translate(-86.5, 61)
if format == '4up':
# bottom dashed outline
ctx.move_to(0, 0)
ctx.line_to(172, 0)
ctx.stroke()
elif format == '2up-fridge':
# prepare to draw sideways
ctx.translate(0, 122.5)
ctx.rotate(-pi/2)
ctx.rectangle(0, 0, 122.5, 173)
ctx.stroke()
poster_img, mark_point = get_map_image(bbox, 109, 77, mark)
draw_small_poster(ctx, poster_img, mark_point, emergency, place, recipient, sender, text, sender_is_recipient)
elif format == 'poster':
ctx.rectangle(0, 0, 173, 245)
ctx.stroke()
poster_img, mark_point = get_map_image(bbox, 153, 108, mark)
draw_large_poster(ctx, poster_img, mark_point, emergency, place, recipient, sender, text, sender_is_recipient)
surf.finish()
chmod(filename, 0644)
return filename
