def __init__(self, canvas: Optional[Image] = None):
"""
Init the turtle world.
:param canvas: the underlying image of the world. None means it's the graphics window.
"""
if canvas is None:
self._win = eg.get_graphics_window()
self._world_image = eg.create_image(eg.get_width(),
eg.get_height())
else:
self._world_image = canvas
self._win = None
self._width = self._world_image.get_width()
self._height = self._world_image.get_height()
self._buffer_image = eg.create_image(self._width, self._height)
self._reset_world_image()
self._turtles: List[Turtle] = []
self._running = True
if self._win is not None:
self._immediate = False
self._win.set_immediate(False)
self._start_refresh_loop()
eg.set_target(self._world_image)
else:
self._immediate = True
def end_fill(self):
"""
Fill the shape enclosed by the turtle's drawing path after the last call to begin_fill.
"""
if not self.is_filling():
return
image = eg.create_image(self._world.get_width(),
self._world.get_height())
image.set_pen(QtGui.QPen(self._world.get_world_image().get_pen()))
image.set_color(eg.Color.TRANSPARENT)
image.set_line_style(eg.LineStyle.SOLID_LINE)
image.set_brush(QtGui.QBrush(
self._world.get_world_image().get_brush()))
image.set_fill_rule(self._world.get_world_image().get_fill_rule())
image.set_composition_mode(eg.CompositionMode.SOURCE)
transform = self._world.get_world_image().get_transform()
image.set_transform(transform)
image.draw_polygon(*self._fillpath)
self._world.get_world_image().reset_transform()
self._world.get_world_image().draw_image(
0,
0,
image,
with_background=False,
composition_mode=eg.CompositionMode.SOURCE_OVER)
self._world.get_world_image().set_transform(transform)
image.close()
self._fillpath.clear()
def create_snap_shot(self) -> Image:
"""
Create a snap shot of the current drawing.
:return: the snap shot image.
"""
image = eg.create_image(self._width, self._height)
self.snap_shot_to_image(image)
return image