在Python的海龟绘图中如何画椭圆/椭圆形?我想使用circle()
函数或类似函数来画一个椭圆和部分椭圆。我可以使用印章(stamp)函数来印出一个椭圆。
turtlesize(stretch_wid=None, stretch_len=10, outline=None)
但我不希望它被填充颜色。
在Python的海龟绘图中如何画椭圆/椭圆形?我想使用circle()
函数或类似函数来画一个椭圆和部分椭圆。我可以使用印章(stamp)函数来印出一个椭圆。
turtlesize(stretch_wid=None, stretch_len=10, outline=None)
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
是圆形的半径,它控制着椭圆的大小。左/右转的原因是因为如果没有它,椭圆就会倾斜。
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()
shape("circle")
shapesize(5,4,1)
fillcolor("white")