在 Python 中使用 turtle 绘制像素的最有效方法是什么？
What would the most efficient way be to draw a pixel using turtle in Python?
如果我要绘制，比方说，马里奥的像素艺术，有很多正方形（见下面的像素艺术），最有效的方法是什么？我试过了，但是代码很长，连函数都尽量删减了。
Mario Image
这是我的代码，它可以工作，但效率不高：
import turtle
from turtle import *
speed(0)
def redSquare():
fillcolor("red")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def blueSquare():
fillcolor("royalblue")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def yellowSquare():
fillcolor("yellow")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def skinSquare():
fillcolor("sandybrown")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def brownSquare():
fillcolor("saddlebrown")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def blackSquare():
fillcolor("black")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
penup()
goto(100, -150)
pendown()
brownSquare()
penup()
goto(70, -150)
pendown()
brownSquare()
penup()
goto(40, -150)
pendown()
brownSquare()
penup()
goto(10, -150)
pendown()
brownSquare()
penup()
goto(10, -120)
pendown()
brownSquare()
penup()
goto(40, -120)
pendown()
brownSquare()
penup()
goto(70, -120)
pendown()
brownSquare()
penup()
goto(40, -90)
pendown()
blueSquare()
penup()
goto(10, -90)
pendown()
blueSquare()
penup()
goto(-20, -90)
pendown()
blueSquare()
penup()
goto(-20, -60)
pendown()
blueSquare()
penup()
goto(-50, -60)
pendown()
blueSquare()
penup()
goto(10, -60)
pendown()
blueSquare()
penup()
goto(40, -60)
pendown()
blueSquare()
penup()
goto(70, -60)
pendown()
skinSquare()
penup()
goto(100, -60)
pendown()
skinSquare()
penup()
goto(100, -30)
pendown()
skinSquare()
penup()
goto(70, -30)
pendown()
skinSquare()
penup()
goto(40, -30)
pendown()
skinSquare()
penup()
goto(10, -30)
pendown()
blueSquare()
penup()
goto(-20, -30)
pendown()
blueSquare()
penup()
goto(-50, -30)
pendown()
blueSquare()
penup()
goto(-50, 0)
pendown()
blueSquare()
penup()
goto(-20, 0)
pendown()
yellowSquare()
penup()
goto(10, 0)
pendown()
blueSquare()
penup()
goto(40, 0)
pendown()
redSquare()
penup()
goto(70, 0)
pendown()
skinSquare()
penup()
goto(100, 0)
pendown()
skinSquare()
penup()
goto(100, 30)
pendown()
redSquare()
penup()
goto(70, 30)
pendown()
redSquare()
penup()
goto(40, 30)
pendown()
redSquare()
penup()
goto(10, 30)
pendown()
redSquare()
penup()
goto(-20, 30)
pendown()
blueSquare()
penup()
goto(-50, 30)
pendown()
blueSquare()
penup()
goto(-50, 60)
pendown()
redSquare()
penup()
goto(-20, 60)
pendown()
blueSquare()
penup()
goto(10, 60)
pendown()
redSquare()
penup()
goto(40, 60)
pendown()
redSquare()
penup()
goto(70, 60)
pendown()
redSquare()
penup()
goto(10, 90)
pendown()
redSquare()
penup()
goto(-20, 90)
pendown()
redSquare()
penup()
goto(-50, 90)
pendown()
redSquare()
penup()
goto(-50, 120)
pendown()
skinSquare()
penup()
goto(-50, 120)
pendown()
skinSquare()
penup()
goto(-20, 120)
pendown()
skinSquare()
penup()
goto(10, 120)
pendown()
skinSquare()
penup()
goto(40, 120)
pendown()
skinSquare()
penup()
goto(70, 120)
pendown()
skinSquare()
penup()
goto(100, 150)
pendown()
blackSquare()
penup()
goto(70, 150)
pendown()
blackSquare()
penup()
goto(40, 150)
pendown()
blackSquare()
penup()
goto(10, 150)
pendown()
blackSquare()
penup()
goto(-20, 150)
pendown()
skinSquare()
penup()
goto(-50, 150)
pendown()
skinSquare()
penup()
goto(-50, 180)
pendown()
skinSquare()
penup()
goto(-20, 180)
pendown()
skinSquare()
penup()
goto(10, 180)
pendown()
skinSquare()
penup()
goto(40, 180)
pendown()
blackSquare()
penup()
goto(70, 180)
pendown()
skinSquare()
penup()
goto(100, 180)
pendown()
skinSquare()
penup()
goto(130, 180)
pendown()
skinSquare()
penup()
goto(100, 210)
pendown()
skinSquare()
penup()
goto(70, 210)
pendown()
skinSquare()
penup()
goto(40, 210)
pendown()
skinSquare()
penup()
goto(10, 210)
pendown()
blackSquare()
penup()
goto(-20, 210)
pendown()
skinSquare()
penup()
goto(-50, 210)
pendown()
skinSquare()
penup()
goto(-50, 240)
pendown()
skinSquare()
penup()
goto(-20, 240)
pendown()
skinSquare()
penup()
goto(10, 240)
pendown()
blackSquare()
penup()
goto(40, 240)
pendown()
skinSquare()
penup()
goto(100, 270)
pendown()
redSquare()
penup()
goto(70, 270)
pendown()
redSquare()
penup()
goto(40, 270)
pendown()
redSquare()
penup()
goto(10, 270)
pendown()
redSquare()
penup()
goto(-20, 270)
pendown()
redSquare()
penup()
goto(-50, 270)
pendown()
redSquare()
penup()
goto(-50, 300)
pendown()
redSquare()
penup()
goto(-20, 300)
pendown()
redSquare()
penup()
goto(10, 300)
pendown()
redSquare()
penup()
goto(-80, 300)
pendown()
redSquare()
penup()
goto(-110, 300)
pendown()
redSquare()
penup()
goto(-140, 300)
pendown()
redSquare()
penup()
goto(-80, 270)
pendown()
redSquare()
penup()
goto(-110, 270)
pendown()
redSquare()
penup()
goto(-140, 270)
pendown()
redSquare()
penup()
goto(-170, 270)
pendown()
redSquare()
penup()
goto(-170, 240)
pendown()
brownSquare()
penup()
goto(-140, 240)
pendown()
brownSquare()
penup()
goto(-110, 240)
pendown()
brownSquare()
penup()
goto(-80, 240)
pendown()
skinSquare()
penup()
goto(-80, 210)
pendown()
skinSquare()
penup()
goto(-110, 210)
pendown()
skinSquare()
penup()
goto(-140, 210)
pendown()
brownSquare()
penup()
goto(-170, 210)
pendown()
skinSquare()
penup()
goto(-200, 210)
pendown()
brownSquare()
penup()
goto(-200, 180)
pendown()
brownSquare()
penup()
goto(-170, 180)
pendown()
skinSquare()
penup()
goto(-140, 180)
pendown()
brownSquare()
penup()
goto(-110, 180)
pendown()
brownSquare()
penup()
goto(-80, 180)
pendown()
skinSquare()
penup()
goto(-80, 180)
pendown()
skinSquare()
penup()
goto(-80, 150)
pendown()
skinSquare()
penup()
goto(-110, 150)
pendown()
skinSquare()
penup()
goto(-140, 150)
pendown()
skinSquare()
penup()
goto(-170, 150)
pendown()
brownSquare()
penup()
goto(-200, 150)
pendown()
brownSquare()
penup()
goto(-140, 120)
pendown()
skinSquare()
penup()
goto(-110, 120)
pendown()
skinSquare()
penup()
goto(-80, 120)
pendown()
skinSquare()
penup()
goto(-80, 90)
pendown()
redSquare()
penup()
goto(-110, 90)
pendown()
blueSquare()
penup()
goto(-140, 90)
pendown()
redSquare()
penup()
goto(-170, 90)
pendown()
redSquare()
penup()
goto(-200, 60)
pendown()
redSquare()
penup()
goto(-170, 60)
pendown()
redSquare()
penup()
goto(-140, 60)
pendown()
redSquare()
penup()
goto(-110, 60)
pendown()
blueSquare()
penup()
goto(-80, 60)
pendown()
redSquare()
penup()
goto(-80, 30)
pendown()
blueSquare()
penup()
goto(-110, 30)
pendown()
blueSquare()
penup()
goto(-140, 30)
pendown()
redSquare()
penup()
goto(-170, 30)
pendown()
redSquare()
penup()
goto(-200, 30)
pendown()
redSquare()
penup()
goto(-230, 30)
pendown()
redSquare()
penup()
goto(-230, 0)
pendown()
skinSquare()
penup()
goto(-200, 0)
pendown()
skinSquare()
penup()
goto(-170, 0)
pendown()
redSquare()
penup()
goto(-140, 0)
pendown()
blueSquare()
penup()
goto(-110, 0)
pendown()
yellowSquare()
penup()
goto(-80, 0)
pendown()
blueSquare()
penup()
goto(-80, -30)
pendown()
blueSquare()
penup()
goto(-110, -30)
pendown()
blueSquare()
penup()
goto(-140, -30)
pendown()
blueSquare()
penup()
goto(-170, -30)
pendown()
skinSquare()
penup()
goto(-200, -30)
pendown()
skinSquare()
penup()
goto(-230, -30)
pendown()
skinSquare()
penup()
goto(-230, -60)
pendown()
skinSquare()
penup()
goto(-200, -60)
pendown()
skinSquare()
penup()
goto(-170, -60)
pendown()
blueSquare()
penup()
goto(-140, -60)
pendown()
blueSquare()
penup()
goto(-110, -60)
pendown()
blueSquare()
penup()
goto(-80, -60)
pendown()
blueSquare()
penup()
goto(-110, -90)
pendown()
blueSquare()
penup()
goto(-140, -90)
pendown()
blueSquare()
penup()
goto(-170, -90)
pendown()
blueSquare()
penup()
goto(-140, -120)
pendown()
brownSquare()
penup()
goto(-170, -120)
pendown()
brownSquare()
penup()
goto(-200, -120)
pendown()
brownSquare()
penup()
goto(-230, -150)
pendown()
brownSquare()
penup()
goto(-200, -150)
pendown()
brownSquare()
penup()
goto(-170, -150)
pendown()
brownSquare()
penup()
goto(-140, -150)
pendown()
brownSquare()
exitonclick()
您可以像这样定义一个名为 square 的函数：
def square():
for x in range(4):
t.forward(20)
t.right(90)
绘制一个 20x20 的正方形。
现在您可以使用它来绘制任何颜色，如下例所示，这将形成一条 4 像素的水平线，例如俄罗斯方块：
def Tetris_Piece_1():
for x in range(4):
t.begin_fill()
square()
t.color("Blue")
t.end_fill()
t.color("Black")
t.forward(20)
而且我认为它不能再优化了，另请查看本教程：(https://replit.com/talk/learn/How-to-draw-Pixel-Art-on-Python-with-Turtle/7556)
最快的方法可能是定义一个函数，在当前海龟位置绘制适当大小的像素形状，然后在一对嵌套的 for 循环中重复调用。
这是一个例子：
import turtle
COLORS = {0: 'white',
1: 'red',
2: 'blue',
3: 'green',
4: 'black',
5: 'yellow',
6: 'orange'}
PIXELS = [[0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 1, 1, 1, 1, 0, 0],
[0, 0, 0, 4, 0, 4, 0, 0],
[0, 0, 0, 2, 3, 0, 0, 0],
[0, 0, 0, 3, 2, 0, 0, 0],
[0, 5, 4, 4, 4, 4, 4, 0],
[0, 0, 6, 6, 6, 6, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0]]
WIDTH, HEIGHT = len(PIXELS[0]), len(PIXELS)
scn = turtle.Screen()
pen = turtle.Turtle()
def pixel():
for i in range(4):
pen.forward(30)
pen.left(90)
pen.forward(30)
if __name__ == "__main__" :
scn.setup(600, 600)
pen.speed(0)
pen.hideturtle()
for i in range(WIDTH):
pen.up()
pen.setpos(0, 30*i) # Row position.
pen.down()
row = PIXELS[i]
for j in range(HEIGHT):
col = COLORS[row[j]]
pen.fillcolor(col)
pen.begin_fill()
pixel()
pen.end_fill()
print('done - press any key to exit')
turtle.onkeypress(exit)
turtle.listen()
turtle.done()
结果：
what would the most efficient way be to do this?
我同意@martineau 的一般方法 (+1)，但由于您想要最有效的方法，我会更改一些内容。我会使用 stamping 而不是 drawing 来减少代码量并加快速度。我还会使用字母串来表示颜色像素，而不是整数数组。而且我会将图像倒置而不是倒置。我发现这使得作为盲打员输入图像更容易，并且即使以编码形式也更容易可视化图像。我会 tracer() 解决这个问题：
from turtle import Screen, Turtle
PIXEL_SIZE = 30
CURSOR_SIZE = 20
COLORS = {
'B': 'blue',
'K': 'black',
'O': 'orange',
'R': 'red',
'T': 'brown',
'W': 'white',
'Y': 'yellow',
}
PIXELS = [
"WWWRRRRRRWWWW",
"WWRRRRRRRRRRW",
"WWTTTOOOKOWWW",
"WTOTOOOOKOOOW",
"WTOTTOOOOKOOO",
"WTTOOOOOKKKKW",
"WWWOOOOOOOOWW",
"WWRRBRRRRWWWW",
"WRRRBRRBRRRWW",
"RRRRBBBBRRRRW",
"OORBYBBYBROOW",
"OOOBBBBBBOOOW",
"OOBBBBBBBBOOW",
"WWBBBWWBBBWWW",
"WTTTWWWWTTTWW",
"TTTTWWWWTTTTW",
]
WIDTH, HEIGHT = len(PIXELS[0]), len(PIXELS)
screen = Screen()
screen.setup((WIDTH + 3) * PIXEL_SIZE, (HEIGHT + 3) * PIXEL_SIZE)
screen.tracer(False)
turtle = Turtle()
turtle.hideturtle()
turtle.shape('square')
turtle.shapesize(PIXEL_SIZE / CURSOR_SIZE)
turtle.penup()
x0 = -WIDTH/2 * PIXEL_SIZE
y0 = HEIGHT/2 * PIXEL_SIZE
for i, row in enumerate(PIXELS):
turtle.setposition(x0, y0 - i * PIXEL_SIZE)
for pixel in row:
turtle.color(COLORS[pixel])
turtle.stamp()
turtle.forward(PIXEL_SIZE)
screen.tracer(True)
screen.exitonclick()
这种方法甚至适用于文字像素：
如果我要绘制，比方说，马里奥的像素艺术，有很多正方形（见下面的像素艺术），最有效的方法是什么？我试过了，但是代码很长，连函数都尽量删减了。
Mario Image
这是我的代码，它可以工作，但效率不高：
import turtle
from turtle import *
speed(0)
def redSquare():
fillcolor("red")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def blueSquare():
fillcolor("royalblue")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def yellowSquare():
fillcolor("yellow")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def skinSquare():
fillcolor("sandybrown")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def brownSquare():
fillcolor("saddlebrown")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
def blackSquare():
fillcolor("black")
begin_fill()
for i in range(4):
forward(30)
right(90)
end_fill()
penup()
goto(100, -150)
pendown()
brownSquare()
penup()
goto(70, -150)
pendown()
brownSquare()
penup()
goto(40, -150)
pendown()
brownSquare()
penup()
goto(10, -150)
pendown()
brownSquare()
penup()
goto(10, -120)
pendown()
brownSquare()
penup()
goto(40, -120)
pendown()
brownSquare()
penup()
goto(70, -120)
pendown()
brownSquare()
penup()
goto(40, -90)
pendown()
blueSquare()
penup()
goto(10, -90)
pendown()
blueSquare()
penup()
goto(-20, -90)
pendown()
blueSquare()
penup()
goto(-20, -60)
pendown()
blueSquare()
penup()
goto(-50, -60)
pendown()
blueSquare()
penup()
goto(10, -60)
pendown()
blueSquare()
penup()
goto(40, -60)
pendown()
blueSquare()
penup()
goto(70, -60)
pendown()
skinSquare()
penup()
goto(100, -60)
pendown()
skinSquare()
penup()
goto(100, -30)
pendown()
skinSquare()
penup()
goto(70, -30)
pendown()
skinSquare()
penup()
goto(40, -30)
pendown()
skinSquare()
penup()
goto(10, -30)
pendown()
blueSquare()
penup()
goto(-20, -30)
pendown()
blueSquare()
penup()
goto(-50, -30)
pendown()
blueSquare()
penup()
goto(-50, 0)
pendown()
blueSquare()
penup()
goto(-20, 0)
pendown()
yellowSquare()
penup()
goto(10, 0)
pendown()
blueSquare()
penup()
goto(40, 0)
pendown()
redSquare()
penup()
goto(70, 0)
pendown()
skinSquare()
penup()
goto(100, 0)
pendown()
skinSquare()
penup()
goto(100, 30)
pendown()
redSquare()
penup()
goto(70, 30)
pendown()
redSquare()
penup()
goto(40, 30)
pendown()
redSquare()
penup()
goto(10, 30)
pendown()
redSquare()
penup()
goto(-20, 30)
pendown()
blueSquare()
penup()
goto(-50, 30)
pendown()
blueSquare()
penup()
goto(-50, 60)
pendown()
redSquare()
penup()
goto(-20, 60)
pendown()
blueSquare()
penup()
goto(10, 60)
pendown()
redSquare()
penup()
goto(40, 60)
pendown()
redSquare()
penup()
goto(70, 60)
pendown()
redSquare()
penup()
goto(10, 90)
pendown()
redSquare()
penup()
goto(-20, 90)
pendown()
redSquare()
penup()
goto(-50, 90)
pendown()
redSquare()
penup()
goto(-50, 120)
pendown()
skinSquare()
penup()
goto(-50, 120)
pendown()
skinSquare()
penup()
goto(-20, 120)
pendown()
skinSquare()
penup()
goto(10, 120)
pendown()
skinSquare()
penup()
goto(40, 120)
pendown()
skinSquare()
penup()
goto(70, 120)
pendown()
skinSquare()
penup()
goto(100, 150)
pendown()
blackSquare()
penup()
goto(70, 150)
pendown()
blackSquare()
penup()
goto(40, 150)
pendown()
blackSquare()
penup()
goto(10, 150)
pendown()
blackSquare()
penup()
goto(-20, 150)
pendown()
skinSquare()
penup()
goto(-50, 150)
pendown()
skinSquare()
penup()
goto(-50, 180)
pendown()
skinSquare()
penup()
goto(-20, 180)
pendown()
skinSquare()
penup()
goto(10, 180)
pendown()
skinSquare()
penup()
goto(40, 180)
pendown()
blackSquare()
penup()
goto(70, 180)
pendown()
skinSquare()
penup()
goto(100, 180)
pendown()
skinSquare()
penup()
goto(130, 180)
pendown()
skinSquare()
penup()
goto(100, 210)
pendown()
skinSquare()
penup()
goto(70, 210)
pendown()
skinSquare()
penup()
goto(40, 210)
pendown()
skinSquare()
penup()
goto(10, 210)
pendown()
blackSquare()
penup()
goto(-20, 210)
pendown()
skinSquare()
penup()
goto(-50, 210)
pendown()
skinSquare()
penup()
goto(-50, 240)
pendown()
skinSquare()
penup()
goto(-20, 240)
pendown()
skinSquare()
penup()
goto(10, 240)
pendown()
blackSquare()
penup()
goto(40, 240)
pendown()
skinSquare()
penup()
goto(100, 270)
pendown()
redSquare()
penup()
goto(70, 270)
pendown()
redSquare()
penup()
goto(40, 270)
pendown()
redSquare()
penup()
goto(10, 270)
pendown()
redSquare()
penup()
goto(-20, 270)
pendown()
redSquare()
penup()
goto(-50, 270)
pendown()
redSquare()
penup()
goto(-50, 300)
pendown()
redSquare()
penup()
goto(-20, 300)
pendown()
redSquare()
penup()
goto(10, 300)
pendown()
redSquare()
penup()
goto(-80, 300)
pendown()
redSquare()
penup()
goto(-110, 300)
pendown()
redSquare()
penup()
goto(-140, 300)
pendown()
redSquare()
penup()
goto(-80, 270)
pendown()
redSquare()
penup()
goto(-110, 270)
pendown()
redSquare()
penup()
goto(-140, 270)
pendown()
redSquare()
penup()
goto(-170, 270)
pendown()
redSquare()
penup()
goto(-170, 240)
pendown()
brownSquare()
penup()
goto(-140, 240)
pendown()
brownSquare()
penup()
goto(-110, 240)
pendown()
brownSquare()
penup()
goto(-80, 240)
pendown()
skinSquare()
penup()
goto(-80, 210)
pendown()
skinSquare()
penup()
goto(-110, 210)
pendown()
skinSquare()
penup()
goto(-140, 210)
pendown()
brownSquare()
penup()
goto(-170, 210)
pendown()
skinSquare()
penup()
goto(-200, 210)
pendown()
brownSquare()
penup()
goto(-200, 180)
pendown()
brownSquare()
penup()
goto(-170, 180)
pendown()
skinSquare()
penup()
goto(-140, 180)
pendown()
brownSquare()
penup()
goto(-110, 180)
pendown()
brownSquare()
penup()
goto(-80, 180)
pendown()
skinSquare()
penup()
goto(-80, 180)
pendown()
skinSquare()
penup()
goto(-80, 150)
pendown()
skinSquare()
penup()
goto(-110, 150)
pendown()
skinSquare()
penup()
goto(-140, 150)
pendown()
skinSquare()
penup()
goto(-170, 150)
pendown()
brownSquare()
penup()
goto(-200, 150)
pendown()
brownSquare()
penup()
goto(-140, 120)
pendown()
skinSquare()
penup()
goto(-110, 120)
pendown()
skinSquare()
penup()
goto(-80, 120)
pendown()
skinSquare()
penup()
goto(-80, 90)
pendown()
redSquare()
penup()
goto(-110, 90)
pendown()
blueSquare()
penup()
goto(-140, 90)
pendown()
redSquare()
penup()
goto(-170, 90)
pendown()
redSquare()
penup()
goto(-200, 60)
pendown()
redSquare()
penup()
goto(-170, 60)
pendown()
redSquare()
penup()
goto(-140, 60)
pendown()
redSquare()
penup()
goto(-110, 60)
pendown()
blueSquare()
penup()
goto(-80, 60)
pendown()
redSquare()
penup()
goto(-80, 30)
pendown()
blueSquare()
penup()
goto(-110, 30)
pendown()
blueSquare()
penup()
goto(-140, 30)
pendown()
redSquare()
penup()
goto(-170, 30)
pendown()
redSquare()
penup()
goto(-200, 30)
pendown()
redSquare()
penup()
goto(-230, 30)
pendown()
redSquare()
penup()
goto(-230, 0)
pendown()
skinSquare()
penup()
goto(-200, 0)
pendown()
skinSquare()
penup()
goto(-170, 0)
pendown()
redSquare()
penup()
goto(-140, 0)
pendown()
blueSquare()
penup()
goto(-110, 0)
pendown()
yellowSquare()
penup()
goto(-80, 0)
pendown()
blueSquare()
penup()
goto(-80, -30)
pendown()
blueSquare()
penup()
goto(-110, -30)
pendown()
blueSquare()
penup()
goto(-140, -30)
pendown()
blueSquare()
penup()
goto(-170, -30)
pendown()
skinSquare()
penup()
goto(-200, -30)
pendown()
skinSquare()
penup()
goto(-230, -30)
pendown()
skinSquare()
penup()
goto(-230, -60)
pendown()
skinSquare()
penup()
goto(-200, -60)
pendown()
skinSquare()
penup()
goto(-170, -60)
pendown()
blueSquare()
penup()
goto(-140, -60)
pendown()
blueSquare()
penup()
goto(-110, -60)
pendown()
blueSquare()
penup()
goto(-80, -60)
pendown()
blueSquare()
penup()
goto(-110, -90)
pendown()
blueSquare()
penup()
goto(-140, -90)
pendown()
blueSquare()
penup()
goto(-170, -90)
pendown()
blueSquare()
penup()
goto(-140, -120)
pendown()
brownSquare()
penup()
goto(-170, -120)
pendown()
brownSquare()
penup()
goto(-200, -120)
pendown()
brownSquare()
penup()
goto(-230, -150)
pendown()
brownSquare()
penup()
goto(-200, -150)
pendown()
brownSquare()
penup()
goto(-170, -150)
pendown()
brownSquare()
penup()
goto(-140, -150)
pendown()
brownSquare()
exitonclick()
您可以像这样定义一个名为 square 的函数：
def square():
for x in range(4):
t.forward(20)
t.right(90)
绘制一个 20x20 的正方形。
现在您可以使用它来绘制任何颜色，如下例所示，这将形成一条 4 像素的水平线，例如俄罗斯方块：
def Tetris_Piece_1():
for x in range(4):
t.begin_fill()
square()
t.color("Blue")
t.end_fill()
t.color("Black")
t.forward(20)
而且我认为它不能再优化了，另请查看本教程：(https://replit.com/talk/learn/How-to-draw-Pixel-Art-on-Python-with-Turtle/7556)
最快的方法可能是定义一个函数，在当前海龟位置绘制适当大小的像素形状，然后在一对嵌套的 for 循环中重复调用。
这是一个例子：
import turtle
COLORS = {0: 'white',
1: 'red',
2: 'blue',
3: 'green',
4: 'black',
5: 'yellow',
6: 'orange'}
PIXELS = [[0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 1, 1, 1, 1, 0, 0],
[0, 0, 0, 4, 0, 4, 0, 0],
[0, 0, 0, 2, 3, 0, 0, 0],
[0, 0, 0, 3, 2, 0, 0, 0],
[0, 5, 4, 4, 4, 4, 4, 0],
[0, 0, 6, 6, 6, 6, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0]]
WIDTH, HEIGHT = len(PIXELS[0]), len(PIXELS)
scn = turtle.Screen()
pen = turtle.Turtle()
def pixel():
for i in range(4):
pen.forward(30)
pen.left(90)
pen.forward(30)
if __name__ == "__main__" :
scn.setup(600, 600)
pen.speed(0)
pen.hideturtle()
for i in range(WIDTH):
pen.up()
pen.setpos(0, 30*i) # Row position.
pen.down()
row = PIXELS[i]
for j in range(HEIGHT):
col = COLORS[row[j]]
pen.fillcolor(col)
pen.begin_fill()
pixel()
pen.end_fill()
print('done - press any key to exit')
turtle.onkeypress(exit)
turtle.listen()
turtle.done()
结果：
what would the most efficient way be to do this?
我同意@martineau 的一般方法 (+1)，但由于您想要最有效的方法，我会更改一些内容。我会使用 stamping 而不是 drawing 来减少代码量并加快速度。我还会使用字母串来表示颜色像素，而不是整数数组。而且我会将图像倒置而不是倒置。我发现这使得作为盲打员输入图像更容易，并且即使以编码形式也更容易可视化图像。我会 tracer() 解决这个问题：
from turtle import Screen, Turtle
PIXEL_SIZE = 30
CURSOR_SIZE = 20
COLORS = {
'B': 'blue',
'K': 'black',
'O': 'orange',
'R': 'red',
'T': 'brown',
'W': 'white',
'Y': 'yellow',
}
PIXELS = [
"WWWRRRRRRWWWW",
"WWRRRRRRRRRRW",
"WWTTTOOOKOWWW",
"WTOTOOOOKOOOW",
"WTOTTOOOOKOOO",
"WTTOOOOOKKKKW",
"WWWOOOOOOOOWW",
"WWRRBRRRRWWWW",
"WRRRBRRBRRRWW",
"RRRRBBBBRRRRW",
"OORBYBBYBROOW",
"OOOBBBBBBOOOW",
"OOBBBBBBBBOOW",
"WWBBBWWBBBWWW",
"WTTTWWWWTTTWW",
"TTTTWWWWTTTTW",
]
WIDTH, HEIGHT = len(PIXELS[0]), len(PIXELS)
screen = Screen()
screen.setup((WIDTH + 3) * PIXEL_SIZE, (HEIGHT + 3) * PIXEL_SIZE)
screen.tracer(False)
turtle = Turtle()
turtle.hideturtle()
turtle.shape('square')
turtle.shapesize(PIXEL_SIZE / CURSOR_SIZE)
turtle.penup()
x0 = -WIDTH/2 * PIXEL_SIZE
y0 = HEIGHT/2 * PIXEL_SIZE
for i, row in enumerate(PIXELS):
turtle.setposition(x0, y0 - i * PIXEL_SIZE)
for pixel in row:
turtle.color(COLORS[pixel])
turtle.stamp()
turtle.forward(PIXEL_SIZE)
screen.tracer(True)
screen.exitonclick()
这种方法甚至适用于文字像素：