如何在turtle graphics(python)中绘制椭圆/椭圆形?
如何在turtle graphics(python)中绘制椭圆/椭圆形?我希望能够使用circle()函数或类似函数绘制椭圆和椭圆的一部分。我可以用#turtlesize(stretch#u wid=None,stretch#len=10,outline=None)在一张邮票上盖章。但是我不希望它是彩色的。您可以使用turtle的shapesize()函数来制作椭圆如何在turtle graphics(python)中绘制椭圆/椭圆形?,python,turtle-graphics,Python,Turtle Graphics,如何在turtle graphics(python)中绘制椭圆/椭圆形?我希望能够使用circle()函数或类似函数绘制椭圆和椭圆的一部分。我可以用#turtlesize(stretch#u wid=None,stretch#len=10,outline=None)在一张邮票上盖章。但是我不希望它是彩色的。您可以使用turtle的shapesize()函数来制作椭圆 shape("circle") shapesize(5,4,1) fillcolor("white") 我自己制作了绘制椭圆的函
shape("circle")
shapesize(5,4,1)
fillcolor("white")
我自己制作了绘制椭圆的函数,我个人认为这非常有用:
def talloval(r): # Verticle Oval
turtle.left(45)
for loop in range(2): # Draws 2 halves of ellipse
turtle.circle(r,90) # Long curved part
turtle.circle(r/2,90) # Short curved part
def flatoval(r): # Horizontal Oval
turtle.right(45)
for loop in range(2):
turtle.circle(r,90)
turtle.circle(r/2,90)
r
是圆的半径,它控制椭圆的大小。之所以向左/向右转弯,是因为没有它,椭圆是对角的。我们可以在Turtle模块中使用椭圆的参数方程生成椭圆。
下面的代码可能有点长,但使用它,我们可以根据需要在任何方向绘制椭圆。您可以根据需要编辑它。我们基本上改变椭圆的参数角度并绘制曲线
import turtle
import math
def ellipse(a, b, h=None, k=None, angle=None, angle_unit=None):
myturtle = turtle.Turtle()
if h is None:
h = 0
if k is None:
k = 0
# Angle unit can be degree or radian
if angle is None:
angle = 360
converted_angle = angle*0.875
if angle_unit == 'd' or angle_unit is None:
converted_angle = angle * 0.875
# We are multiplying by 0.875 because for making a complete ellipse we are plotting 315 pts according
# to our parametric angle value
elif angle_unit == "r":
converted_angle = (angle * 0.875 * (180/math.pi))
# Converting radian to degrees.
for i in range(int(converted_angle)+1):
if i == 0:
myturtle.up()
else:
myturtle.down()
myturtle.setposition(h+a*math.cos(i/50), k+b*math.sin(i/50))
turtle.done()
嘿,感谢您的回复,没有名为“ellipse”的形状,但是您的fillcolor(“白色”)命令用于我上面提到的#turtlesize(stretch_wid=None,stretch_len=10,outline=None)。所以你帮我解决了它!:)这里有一个冗长的答案和演示代码:另外,这可能很有用:
import turtle
import math
def ellipse(a, b, h=None, k=None, angle=None, angle_unit=None):
myturtle = turtle.Turtle()
if h is None:
h = 0
if k is None:
k = 0
# Angle unit can be degree or radian
if angle is None:
angle = 360
converted_angle = angle*0.875
if angle_unit == 'd' or angle_unit is None:
converted_angle = angle * 0.875
# We are multiplying by 0.875 because for making a complete ellipse we are plotting 315 pts according
# to our parametric angle value
elif angle_unit == "r":
converted_angle = (angle * 0.875 * (180/math.pi))
# Converting radian to degrees.
for i in range(int(converted_angle)+1):
if i == 0:
myturtle.up()
else:
myturtle.down()
myturtle.setposition(h+a*math.cos(i/50), k+b*math.sin(i/50))
turtle.done()