def draw_canvas(state):
'''Draw all the cities in the current state in a canvas. Indicate the start
city with a description and the current city by the turtle pointer head
'''
turtle.clear()
turtle.hideturtle()
turtle.up()
turtle.pencolor("blue")
current_city = state.current_city
for city in state.cities:
x = city.position[0]
y = city.position[1]
turtle.goto(x, y)
if city.is_start:
turtle.write('{}, Start'.format(city.name), align="center", font=("Arial", 12, "bold"))
elif city == current_city:
turtle.write('{}, Current'.format(city.name), align="center", font=("Arial", 12, "bold"))
else:
turtle.write('{}'.format(city.name), align="center", font=("Arial", 12, "bold"))
turtle.goto(current_city.position[0], current_city.position[1])
python类clear()的实例源码
def clear(self, lines=()):
"""Queue clear command"""
self.enqueue(lambda: self.do_clear(lines))
def do_clear(self, lines=()):
"""Clear plot and draw grid lines"""
turtle.clear()
self.tables = []
self.lines = lines
self.draw_grid()
def redraw(self):
"""Clear plot and draw grid lines"""
turtle.clear()
self.setworldcoordinates()
self.draw_grid()
for tables, kwargs in self.tables:
self.plot_table(*tables, draw_speed=1024, **kwargs)
def run(self):
"""Test Plot class client thread"""
p = self.plot
try:
p.plot([512 for i in range(256)], draw_speed=4)
p.clear(lines=
[{'pos': i, 'label': str(i)} for i in list(range(16, 256-15, 16)) + [255]] +
[{'pos': i, 'horizontal': True, 'label': str(i)}
for i in range(64, 1024-63, 64)])
p.plot([512 for i in range(256)], draw_speed=4)
p.clear(lines=[{'pos': 128, 'label': 'Green line\nlabel', 'color': 'green'},
{'pos': 136, 'label': 'Blue\nline\nlabel', 'priority': 1,
'color': 'blue'}])
p.plot([512 for i in range(256)], draw_speed=4)
p.zoom(4, (0, -1))
p.clear(lines=[{'pos': 128, 'label': 'Green line\nlabel', 'color': 'green'},
{'pos': 136, 'label': 'Blue\nline\nlabel', 'color': 'blue'}])
p.plot([512 for i in range(256)], draw_speed=4)
p.clear()
p.zoom()
p.plot([512 for i in range(256)], draw_speed=4)
p.clear(lines=[{'pos': i} for i in range(256)])
p.plot([512 for i in range(256)], draw_speed=2)
p.clear(lines=[{'pos': 127}, {'pos':128}])
p.plot([i << 2 | i >> 6 for i in range(256)])
p.plot([i << 2 | i >> 6 for i in range(255, -1, -1)], colors=['red'])
p.zoom(4, (0, 0))
p.plot([i << 2 | i >> 6 for i in range(256)], draw_speed=2, colors=['green'])
p.zoom(2, (-1, 0))
p.plot([i << 2 | i >> 6 for i in range(256)], draw_speed=2, colors=['green'])
p.zoom()
p.enqueue(lambda: turtle.setpos(100, 512))
p.enqueue(lambda: turtle.write('test done'))
print('test done')
except PlotClosed as err:
print(err)
def draw_final_path(state):
'''Draw the TSP path given the cities in the correct order'''
if not state:
return None
states = []
while state:
states.append(state)
state = state.parent
cities = [state.current_city for state in states]
rest = deepcopy(cities)
rest = rest[1:]
rest.reverse()
cities = [cities[0]] + rest
turtle.clear()
turtle.hideturtle()
turtle.up()
turtle.pensize(1)
for city in cities:
x = city.position[0]
y = city.position[1]
turtle.pencolor("red")
turtle.goto(x, y)
turtle.pencolor("black")
if city.is_start:
turtle.write('{}-Start'.format(city.name), align="center", font=("Arial", 11, "bold"))
else:
turtle.write('{}'.format(city.name), align="center", font=("Arial", 11, "bold"))
turtle.down()
turtle.pencolor("red")
turtle.goto(cities[0].position[0], cities[0].position[1])
def tscheme_clear():
"""Clear the drawing, leaving the turtle unchanged."""
_tscheme_prep()
turtle.clear()
return okay
def tscheme_clear():
"""Clear the drawing, leaving the turtle unchanged."""
_tscheme_prep()
turtle.clear()
return okay
def tscheme_clear():
"""Clear the drawing, leaving the turtle unchanged."""
_tscheme_prep()
turtle.clear()
return okay
def draw_floor(floornum: int):
global current_floor
current_floor = floornum
node_coords = utils.get_node_coords(utils.Direction.left)
if floornum == len(full_floors):
rooms = []
# All edges with rooms
print('Showing everything')
edges = chain.from_iterable(chain(((True, e) for e in edges[0]), ((False, e) for e in edges[1])) for _, edges in full_floors)
# Edges with elevation changes
#edges = set(chain.from_iterable((edge(v, n) for n in b.values() if set(['u', 'd']) & set(utils.get_graph().edgedata[edge(v, n)]['rooms'])) for v, b in enumerate(utils.get_graph().branches)))
# All edges
#...
elif floornum >= 0 and floornum < len(full_floors):
rooms, edges = full_floors[floornum]
print(edges)
edges = chain(((True, e) for e in edges[0]), ((False, e) for e in edges[1]))
print(rooms)
else:
return
turtle.showturtle()
turtle.speed(0)
turtle.clear()
written_nodes = set()
for edge_dir, (a, b) in edges:
turtle.penup()
x, y, _ = node_coords[a]
turtle.goto(x / SHRINK + X_OFFSET, y / SHRINK + Y_OFFSET)
if a not in written_nodes:
turtle.write(a)
written_nodes.add(a)
turtle.pendown()
if edge_dir:
if edge_lengths[edge(a, b)] <= 0:
turtle.pencolor('red')
else:
turtle.pencolor('black')
else:
if edge_lengths[edge(a, b)] <= 0:
turtle.pencolor('blue')
else:
turtle.pencolor('green')
x, y, _ = node_coords[b]
turtle.goto(x / SHRINK + X_OFFSET, y / SHRINK + Y_OFFSET)
turtle.pencolor('black')
if b not in written_nodes:
turtle.write(b)
written_nodes.add(b)
turtle.hideturtle()
turtle.done()
