def instructions():
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
stddraw.setFontSize(30)
stddraw.text(3.5,7,"To Win This Game All You Have To Do")
stddraw.text(3.5,6,"Is Get Your Score Over 100 in under 25 Moves.")
stddraw.text(3.5,5,"That's It!. Good Luck!")
def win():
stddraw.clear()
stddraw.setPenColor(stddraw.GREEN)
stddraw.setFontSize(36)
stddraw.text(4.5, -4.5, "Congrats! You win!")
stddraw.show(1000)
sys.exit()
def computation(number):
'''
This function compute the steps which takes that for all distance from vertices of a polygon to its centroid are smaller than 0.001
This function will also plot a new polygon
'''
# x and y are arrays to hold x coordinates and y coordinates of a vertex
x,y=generate_polygon(number)
x_average=average(x) # calculate x bar
y_average=average(y) # calculate y bar
diff=difference(x,y,x_average,y_average)
# if diff is true, means distance of (x_bar,y_bar) and all vertices of a polygon are smaller than 0.001
k=0
while not diff:
k+=1
stddraw.clear()
stddraw.polygon(x,y)
stddraw.show(20)
x=average_coordinates(x) # calculate the new x coordinates
y=average_coordinates(y) # calculate the new y coordinates
x_average=average(x) # x_average is the x bar of this new polygon
y_average=average(y) # y_average is the y bar of this new polygon
diff=difference(x,y,x_average,y_average)
return k
def main():
#n = int(sys.argv[1])
#p = float(sys.argv[2])
#trials = int(sys.argv[3])
n = 50
trials = 1
moveStep = 999
for i in range(trials):
#isAlive = lifeio.random(n, p)
#滑翔机
isAlive = [[False] * 2*n for i in range(2*n)]
isAlive[10][20] = True
isAlive[11][21] = True
isAlive[12][19] = True
isAlive[12][20] = True
isAlive[12][21] = True
#isAlive[10][21] = True
'''
#高斯帕滑翔机枪
isAlive = GosperGliderGun.gun
'''
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
lifeio.draw(isAlive, True)
stddraw.show(1000)
for j in range(moveStep):
stddraw.clear()
alive = move(isAlive)
isAlive = alive
stddraw.show()
def drawScene(black_hole_x, black_hole_y, ball_x, ball_y, goal_x, goal_y,
neg_x, neg_y):
'''
handles the drawing of the ball, black box, goal box, and negative box
'''
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
#gridlines
for i in range(1, GRID_NUM):
stddraw.filledRectangle(GRID_SIZE * i, 0, 0, HEIGHT)
stddraw.filledRectangle(0, GRID_SIZE * i, WIDTH, 0)
#black rectangle
stddraw.filledRectangle(black_hole_x * GRID_SIZE, black_hole_y * GRID_SIZE,
GRID_SIZE, GRID_SIZE)
#Ball
stddraw.setPenColor(stddraw.GREEN)
stddraw.filledCircle(((ball_x * GRID_SIZE) + (GRID_SIZE / 2)),
((ball_y * GRID_SIZE) + (GRID_SIZE / 2)),
GRID_SIZE / 2)
#Goal
stddraw.setPenColor(stddraw.GREEN)
stddraw.rectangle(goal_x * GRID_SIZE, goal_y * GRID_SIZE, GRID_SIZE,
GRID_SIZE)
#Negative box
stddraw.setPenColor(stddraw.RED)
stddraw.rectangle(neg_x * GRID_SIZE, neg_y * GRID_SIZE, GRID_SIZE,
GRID_SIZE)
def main():
hurstExponent = float(sys.argv[1])
stddraw.setPenRadius(0.0)
stddraw.clear(stddraw.LIGHT_GRAY)
scaleFactor = 2 ** (2.0 * hurstExponent)
curve(0, .5, 1.0, .5, .01, scaleFactor)
stddraw.show()
def drawGridScene(self):
"""
Draws the gridlines and current position of the ball and robot
"""
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
#gridlines
for i in range(1, self.GRID_NUM_HEIGHT):
stddraw.filledRectangle(0, self.GRID_SIZE * i, self.WIDTH, 0)
for i in range(1, self.GRID_NUM_WIDTH):
stddraw.filledRectangle(self.GRID_SIZE * i, 0, 0, self.HEIGHT)
#goalie
stddraw.setPenColor(stddraw.BLUE)
stddraw.filledRectangle(self.goalie_pos * self.GRID_SIZE, 0,
self.GRID_SIZE,
self.GRID_SIZE) #x,y,size_x,size_y
#Ball
stddraw.setPenColor(stddraw.GREEN)
stddraw.filledCircle(
((self.ball_x * self.GRID_SIZE) + (self.ball_radius)),
(self.HEIGHT - ((self.ball_y * self.GRID_SIZE) +
(self.ball_radius))), self.ball_radius)
stddraw.show(0)
def fall():
m = 1
while m == 1:
m = 0
for i in range(1, 9):
for j in range(9):
if game[8][j] == "null":
game[8][j] = blocks[random.randrange(0, 6)]
if game[i][j] != "null" and game[i - 1][j] == "null":
a = game[i][j]
b = game[i - 1][j]
game[i][j] = b
game[i - 1][j] = a
m = 1
stddraw.clear()
update()
if x:
stddraw.show(2)
update()
for i in range(9):
for j in range(9):
if game[i][j] == "null":
game[i][j] = blocks[random.randrange(0, 6)]
def win(winner, turn):
stddraw.clear()
stddraw.setFontSize(30)
if winner == 'X' or winner == 'O':
stddraw.text(0.0, 0.0, "'" + winner + "'" + " player wins")
if turn >= 9 and winner != 'X' and winner != 'O':
stddraw.text(0.0, 0.0, " It's a tie!")
def main():
hurstExponent = float(sys.argv[1])
stddraw.setPenRadius(0.0)
stddraw.clear(stddraw.LIGHT_GRAY)
scaleFactor = 2**(2.0 * hurstExponent)
fill_brownian(array, 0, 128, 0.05, scaleFactor)
stddraw.show()
def draw(pole):
POLE_WIDTH = 0.01
POLE_COLOR = stddraw.RED
DISC_COLOR = stddraw.BLUE
n = len(pole) - 1
# Draw 3 poles.
stddraw.clear()
stddraw.setPenColor(POLE_COLOR)
stddraw.setPenRadius(POLE_WIDTH)
for i in range(3):
stddraw.line(i, 0, i, n)
# Draw n discs.
discs = stdarray.create1D(3, 0) # discs[p] = # discs on pole p
for i in range(n, 0, -1):
stddraw.setPenColor(DISC_COLOR)
stddraw.setPenRadius(0.035) # magic constant
size = 0.5 * i / n
p = pole[i]
stddraw.line(p-size/2, discs[p], p + size/2, discs[p])
discs[p] += 1
stddraw.show(500.0)
def drawSelect(point, score, time): #[x, y], score
x = point[0]
y = point[1]
stddraw.clear()
LIGHT_BLUE = Color(190,240,255)
stddraw.setPenColor(LIGHT_BLUE)
stddraw.filledSquare(x-1+0.5, y+0.5, 0.5) #the 4 adjacent squares to the one you clicked
stddraw.filledSquare(x+1+0.5, y+0.5, 0.5)
stddraw.filledSquare(x+0.5, y-1+0.5, 0.5)
stddraw.filledSquare(x+0.5, y+1+0.5, 0.5)
drawTop(score, time)
drawBoard()
stddraw.setPenColor(stddraw.BLACK)
stddraw.setPenRadius(0.04)
stddraw.line(x, y, x+0.25, y) #the 4 corners around the selected square
stddraw.line(x, y, x, y+0.25) #bottom left
stddraw.line(x+0.75, y, x+1, y) #bottom right
stddraw.line(x+1, y, x+1, y+0.25)
stddraw.line(x, y+0.75, x, y+1) #top left
stddraw.line(x, y+1, x+0.25, y+1)
stddraw.line(x+0.75, y+1, x+1, y+1) #top right
stddraw.line(x+1, y+0.75, x+1, y+1)
def main():
hurstExponent = float(sys.argv[1])
stddraw.setPenRadius(0.0)
stddraw.clear(stddraw.LIGHT_GRAY)
scaleFactor = 2 ** (2.0 * hurstExponent)
curve(0, .5, 1.0, .5, .01, scaleFactor)
stddraw.show()
def swap(mx1, mx2, my1, my2):
a = game[my1][mx1]
b = game[my2][mx2]
game[my1][mx1] = b
game[my2][mx2] = a
stddraw.clear()
update()
def there_is_no_winner(game_playertwo_click, game_playerOne_click):
if len(game_playertwo_click) + len(game_playerOne_click) >= 9:
stddraw.clear()
stddraw.setFontSize(30)
stddraw.text(1.5, 2.5, "There is no winner ! ")
stddraw.text(1.5, 1.5, "please close you window !")
stddraw.show(1)
exit()
def hanoi(n):
DT = 1000
t = 1.4
l = []
tow = []
for i in range(3):
tow.append([])
for j in range(n):
tow[i].append(0)
for i in range(n):
l.append(t**i)
stddraw.setXscale(-1, t**n * 4)
stddraw.setYscale(-1, n + 2)
stddraw.line(t**n * 0.5, -1, t**n * 0.5, n + 1)
stddraw.line(t**n * 1.5, -1, t**n * 1.5, n + 1)
stddraw.line(t**n * 2.5, -1, t**n * 2.5, n + 1)
tow[0] = l
for i in range(n):
stddraw.line(t**n * 0.5 - tow[0][i] / 2, n - i,
t**n * 0.5 + tow[0][i] / 2, n - i)
stddraw.show(DT)
global r
for a in range(len(r)):
stddraw.clear()
stddraw.line(t**n / 2, -1, t**n / 2, n + 1)
stddraw.line(t**n * 1.5, -1, t**n * 1.5, n + 1)
stddraw.line(t**n * 2.5, -1, t**n * 2.5, n + 1)
p = r[a][0]
d = r[a][1]
for i in range(3):
flag = 0
for j in range(n):
#if j+1 == p:
if tow[i][j] == t**(p - 1):
flag = 1
if d == 'l':
num = (i - 1) % 3
else:
num = (i + 1) % 3
temp = tow[i][j]
tow[i][j] = 0
tt = n - 1
while tow[num][tt] != 0:
tt -= 1
tow[num][tt] = temp
#if flag == 1: break
if flag == 1: break
#print(tow)
for i in range(3):
for j in range(n):
if tow[i][j]:
stddraw.line(t**n * (i + 0.5) - tow[i][j] / 2, n - j,
t**n * (i + 0.5) + tow[i][j] / 2, n - j)
#print(i,j,'||||',t**n*(i+0.5)-tow[i][j]/2,n-j,t**n*(i+0.5)+tow[i][j]/2,n-j)
stddraw.show(DT)
def redraw_board():
stddraw.clear()
for i in range(9):
for j in range(7):
if board_array[i][j] != 6:
stddraw.picture(
shapes_array[board_array[i][j]],
padding_horizontal + j * taffy_spacing_horizontal,
1 - (padding_vertical + i * taffy_spacing_vertical))
def main():
n = int(sys.argv[1])
turtle = Turtle(.5, .0, 180.0 / n)
stepSize = math.sin(math.radians(180.0 / n))
stddraw.clear(stddraw.LIGHT_GRAY)
for i in range(n):
turtle.goForward(stepSize)
turtle.turnLeft(360.0 / n)
stddraw.show()
def main():
n = int(sys.argv[1])
turtle = Turtle(.5, .0, 180.0/n)
stepSize = math.sin(math.radians(180.0/n))
stddraw.clear(stddraw.LIGHT_GRAY)
for i in range(n):
turtle.goForward(stepSize)
turtle.turnLeft(360.0/n)
stddraw.show()
def main(argv):
var = float(argv[1])
n = int(argv[2])
stddraw.createWindow()
stddraw.clear()
stddraw.setXscale(-1, +1)
stddraw.setYscale(-1, +1)
midpoint(0, 0, 0, 0, var / math.sqrt(2), n)
stddraw.wait()
def main():
filename = sys.argv[1]
dt = float(sys.argv[2])
universe = Universe(filename)
while True:
universe.increaseTime(dt)
stddraw.clear()
universe.draw()
stddraw.show(10)
def draw_world(world, wait=-1):
"""
Draws the present state of Karel's world to stddraw.
:param world: object of type World to draw
:return:
"""
stddraw.clear()
_draw_labels(world.num_avenues, world.num_streets)
_draw_status(world.num_avenues, world.num_streets, world.karel)
for i in range(1, world.num_avenues + 1):
for j in range(1, world.num_streets + 1):
x = float(i) - 0.5
y = float(j) - 0.5
# draw beeper(s) if present
stddraw.setPenRadius()
b = world.beepers[i][j]
if b > 0:
stddraw.picture(_beeper_picture, x, y)
if b > 1:
stddraw.text(x, y, str(b))
else:
d = 0.5 * _intersection_size
stddraw.line(x - d, y, x + d, y)
stddraw.line(x, y - d, x, y + d)
# draw walls
x1 = x + 0.5
x0 = x1 - 1.0
y1 = y + 0.5
y0 = y1 - 1.0
walls = world.walls[i][j]
stddraw.setPenRadius(0.5 * _wall_thickness)
if walls[constants.NORTH]:
stddraw.line(x0, y1, x1, y1)
if walls[constants.SOUTH]:
stddraw.line(x0, y0, x1, y0)
if walls[constants.EAST]:
stddraw.line(x1, y0, x1, y1)
if walls[constants.WEST]:
stddraw.line(x0, y0, x0, y1)
# draw Karel the Robot
if world.karel is not None:
x = float(world.karel.location_avenue) - 0.5
y = float(world.karel.location_street) - 0.5
d = world.karel.facing
stddraw.picture(_karel_pictures[d], x, y)
if world.karel.error:
stddraw.picture(_error_picture, x, y)
if wait >= 0:
stddraw.show(wait)
else:
stddraw.show()
def main():
filename = sys.argv[1]
dt = float(sys.argv[2])
universe = Universe(filename)
while True:
universe.increaseTime(dt)
stddraw.clear()
universe.draw()
stddraw.show(10)
def main(argv):
var = float(argv[1])
n = int(argv[2])
stddraw.createWindow()
stddraw.clear()
stddraw.setXscale(-1, +1)
stddraw.setYscale(-1, +1)
midpoint(0, 0, 0, 0, var / math.sqrt(2), n)
stddraw.wait()
def main(argv):
stddraw.createWindow()
newton = Universe()
dt = float(argv[1])
while True:
newton.increaseTime(dt)
newton.draw()
stddraw.sleep(10)
stddraw.show()
stddraw.clear()
def main(argv):
stddraw.createWindow()
newton = Universe()
dt = float(argv[1])
while True:
newton.increaseTime(dt)
newton.draw()
stddraw.sleep(10)
stddraw.show()
stddraw.clear()
def main():
n = int(sys.argv[1])
#n = 5
turtle = Turtle(.5, .0, 90 - (180.0 / n / 2))
stepSize = math.sin(math.radians(180.0 / n)) * n / 3
stddraw.clear(stddraw.LIGHT_GRAY)
for i in range(n):
turtle.goForward(stepSize)
turtle.turnLeft((1 - 1 / n) * 180.0)
stddraw.show(1000)
stddraw.show()
def load_more_taffies():
shift_taffies_down()
for j in range(7):
stddraw.clear()
redraw_board()
stddraw.show(100)
if board_array[0][j] == 6:
board_array[0][j] = randint(0, 5)
if board_array[1][j] == 6:
shift_taffies_down()
load_more_taffies()
def _init_canvas(minX, maxX, minY, maxY):
"""
@param minX: smallest x value
@param maxX: largest x value
@param minY: smallest y value
@param maxY: largest y value
Initialises a canvas with given scale
"""
stddraw.clear(color.DARK_GRAY)
stddraw.setXscale(minX - 1, maxX + 1) # -4 bis 3
stddraw.setYscale(minY - 1, maxY + 1) # -1 bis 8
def win(chosen_word):
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
stddraw.filledSquare(0.0, 0.0, 10)
stddraw.setFontSize(70)
stddraw.setPenColor(stddraw.MAGENTA)
stddraw.text(0.0, 0.0, "YOU WIN xD")
stddraw.setFontSize(30)
stddraw.text(0.0, -4, "The word was: ")
stddraw.text(0.0, -5, str(''.join(chosen_word)))
stddraw.show(9000)
def lose(chosen_word):
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
stddraw.filledSquare(0.0, 0.0, 10)
stddraw.setFontSize(70)
stddraw.setPenColor(stddraw.BLUE)
stddraw.text(0.0, 0.0, "Oops :(")
stddraw.setFontSize(30)
stddraw.text(0.0, -4, "You couldn't guess the word!")
stddraw.text(0.0, -5, "The word was: ")
stddraw.text(0.0, -6, str(''.join(chosen_word)))
stddraw.show(9000)
def exch(a, i, j):
tmp = a[i]
a[i] = a[j]
a[j] = tmp
stddraw.clear()
for n in range(length):
if n == j or n == i:
stddraw.setPenColor(stddraw.RED)
else:
stddraw.setPenColor(stddraw.BLUE)
stddraw.filledRectangle(n, 0, 0.5, a[n])
stddraw.show(300)
def determine_the_winner(game_player_click, playernumber, game_win):
if len(game_player_click) >= 3:
win = check_weather_win(game_player_click)
playernumber_str = str(playernumber)
if win == True:
stddraw.clear()
stddraw.setFontSize(30)
stddraw.text(1.5, 2.5, "player" + playernumber_str + " win !")
stddraw.text(1.5, 1.5, "please close you window !")
game_win = False
stddraw.show()
return game_win
def display(self):
# clear the background canvas to empty_cell_color
stddraw.clear(self.empty_cell_color)
# draw the game grid
self.draw_grid()
# draw the current (active) tetromino
if self.current_tetromino != None:
self.current_tetromino.draw()
# draw a box around the game grid
self.draw_boundaries()
# show the resulting drawing with a pause duration = 250 ms
stddraw.show(250)
def draw_new_things(game_array,score):
stddraw.clear()
stddraw.setFontSize(30)
stddraw.text(2.2, 9.2, "Your current Score:")
stddraw.text(9, 8, "Remaining Moves")
score1 = str(score)
stddraw.text(5.5, 9.2, score1)
draw_a_circle(game_array)
draw_a_inclined(game_array)
draw_a_square(game_array)
draw_a_regular_triangle(game_array)
draw_a_pentagon(game_array)
draw_a_parallelogram(game_array)
def main():
n = int(sys.argv[1]) # number of biased coin flips per trial
p = float(sys.argv[2]) # heads with probability p
trialCount = int(sys.argv[3]) # number of trials
histogram = Histogram(n + 1)
for trial in range(trialCount):
heads = stdrandom.binomial(n, p)
histogram.addDataPoint(heads)
stddraw.setCanvasSize(500, 200)
stddraw.clear(stddraw.LIGHT_GRAY)
histogram.draw()
stddraw.show()
def main():
n = int(sys.argv[1])
p = float(sys.argv[2])
trials = int(sys.argv[3])
for i in range(trials):
isOpen = percolationio.random(n, p)
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
percolationio.draw(isOpen, False)
stddraw.setPenColor(stddraw.BLUE)
full = percolation.flow(isOpen)
percolationio.draw(full, True)
stddraw.show(1000.0)
stddraw.show()
def main(argv):
n = int(argv[1])
p = float(argv[2])
t = int(argv[3])
stddraw.createWindow()
for i in range(t):
open = percolation.random(n, p)
stddraw.clear()
stddraw.setPenColor(stddraw.BLACK)
percolation.show(open, False)
stddraw.setPenColor(stddraw.BLUE)
full = percolation.flow(open)
percolation.show(full, True)
stddraw.sleep(1000)
stddraw.show()
stddraw.wait()
def draw(pole):
n = len(pole) - 1
# Draw 3 poles.
stddraw.clear()
stddraw.setPenColor(POLE_COLOR)
stddraw.setPenRadius(POLE_WIDTH)
for i in range(3):
stddraw.line(i, 0, i, n)
# Draw n discs.
discs = stdarray.create1D(3, 0) # discs[p] = # discs on pole p
for i in range(n, 0, -1):
stddraw.setPenColor(DISC_COLOR)
stddraw.setPenRadius(0.035) # magic constant
size = 0.5 * i / n
p = pole[i]
stddraw.line(p-size/2, discs[p], p + size/2, discs[p])
discs[p] += 1
stddraw.sleep(500)
stddraw.show()
def main(argv):
lamb = float(argv[1]) # Arrival rate
mu = float(argv[2]) # Service rate
hist = histogram.Histogram(60 + 1)
q = linkedlistqueue.Queue()
stddraw.createWindow(700, 500)
nextArrival = stdrandom.exp(lamb) # Time of next arrival
nextService = nextArrival + 1.0/mu # Time of next completed service
# Simulate the M/D/1 queue
while True:
# Next event is an arrival.
while nextArrival < nextService:
# Simulate an arrival
q.enqueue(nextArrival)
nextArrival += stdrandom.exp(lamb)
# Next event is a service completion.
arrival = q.dequeue()
wait = nextService - arrival
# Update the histogram.
stddraw.clear()
hist.addDataPoint(min([60, int(wait+0.5)]))
hist.draw()
#stddraw.sleep(20)
stddraw.sleep(20)
stddraw.show()
# Update the queue.
if q.isEmpty():
nextService = nextArrival + 1.0/mu
else:
nextService = nextService + 1.0/mu
koch(n-1, stepSize, myTurtle)
myTurtle.turnLeft(60.0)
koch(n-1, stepSize, myTurtle)
myTurtle.turnLeft(-120.0)
koch(n-1, stepSize, myTurtle)
myTurtle.turnLeft(60.0)
koch(n-1, stepSize, myTurtle)
# Accept integer n as a command-line argument. Plot a Koch curve of
# order n to standard draw.
n = int(sys.argv[1])
stddraw.setCanvasSize(512, 256)
stddraw.setYscale(-.1, 0.4)
stddraw.setPenRadius(0.0)
stddraw.clear(stddraw.LIGHT_GRAY)
stepSize = 1.0 / (3.0 ** n)
myTurtle = Turtle(0.0, 0.0, 0.0)
koch(n, stepSize, myTurtle)
stddraw.show()
#-----------------------------------------------------------------------
# python koch.py 0
# python koch.py 1
# python koch.py 2
# python koch.py 3
import stddraw
# Draw a bouncing ball to standard draw.
RADIUS = .05
DT = 20.0
stddraw.setXscale(-1.0, 1.0)
stddraw.setYscale(-1.0, 1.0)
rx = .480
ry = .860
vx = .015
vy = .023
while True:
# Update ball position and draw it there.
if abs(rx + vx) + RADIUS > 1.0:
vx = -vx
if abs(ry + vy) + RADIUS > 1.0:
vy = -vy
rx = rx + vx
ry = ry + vy
stddraw.clear(stddraw.GRAY)
stddraw.filledCircle(rx, ry, RADIUS)
stddraw.show(0)
for i in range(t):
# Make one random move.
r = random.random()
sum = 0.0;
for j in range(n):
# Find interval containing r.
sum += p[page][j]
if r < sum:
page = j
break
freq[page] += 1
if i % 1000 == 0:
# Plot histogram of frequencies
stddraw.clear();
for k in range(n):
stddraw.line(k, 0, k, freq[k])
stddraw.show()
# Print page ranks.
for i in range(n):
stdio.writef("%8.5f", float(freq[i]) / float(t))
stdio.writeln()
stddraw.wait()
#-----------------------------------------------------------------------
# Example executions:
#
# python transition.py < tiny.txt | python randomsurferhistogram.py 1000000
import stddraw
import math
# Draw an animation of the second, minute, and hour hands of an
# analog clock.
stddraw.createWindow()
t = 0
while True:
# Remainder operator with floats so all hands move every second.
seconds = t % 60
minutes = (t / 60.0) % 60
hours = (t / 3600.0) % 12
stddraw.clear()
stddraw.setPenRadius()
# Draw clock face.
stddraw.setPenColor(stddraw.BLACK)
stddraw.filledCircle(0.5, 0.5, 0.45)
# Draw hour markers.
stddraw.setPenColor(stddraw.BLUE)
for i in range(12):
theta = math.radians(i * 30)
stddraw.filledCircle(0.5 + 0.4 * math.cos(theta), \
0.5 + 0.4 * math.sin(theta), .025)
# Draw second hand.
stddraw.setPenRadius(.01)
def main():
stddraw.createWindow(1024, 256)
stddraw.setPenRadius(0)
stddraw.setXscale(0, _SAMPLES_PER_REDRAW)
stddraw.setYscale(-0.75, +0.75)
stddraw.show()
# Create keyboardDict, a dictionary relating each keyboard key
# to a guitar string.
keyboardDict = {}
i = 0
for key in _KEYBOARD:
factor = 2 ** ((i - 24) / 12.0)
guitarString = guitarstring.GuitarString(_CONCERT_A * factor)
keyboardDict[key] = guitarString
i += 1
# pluckedGuitarStrings is the set of all guitar strings that have
# been plucked.
pluckedGuitarStrings = set()
t = 0
# The main input loop.
while True:
if stddraw.hasNextKeyTyped():
# Fetch the key that the user just typed.
key = stddraw.nextKeyTyped()
# Figure out which guitar string to pluck, and pluck it.
try:
guitarString = keyboardDict[key]
guitarString.pluck()
pluckedGuitarStrings.add(guitarString)
except KeyError:
pass
# Add up the samples from each plucked guitar string. Also
# advance the simulation of each plucked guitar string by
# one step.
sample = 0.0
faintGuitarStrings = set()
for guitarString in pluckedGuitarStrings:
sample += guitarString.sample()
guitarString.tic()
if guitarString.isFaint():
faintGuitarStrings.add(guitarString)
# Remove faint guitar strings from the set of plucked guitar
# strings.
for guitarString in faintGuitarStrings:
pluckedGuitarStrings.remove(guitarString)
# Play the total.
stdaudio.playSample(sample)
# Plot
stddraw.point(t % _SAMPLES_PER_REDRAW, sample)
if t == (_SAMPLES_PER_REDRAW - 1):
stddraw.show()
stddraw.clear()
t = 0
t += 1