color fill function
Using Turtle can not only draw lines, but also fill the drawn closed lines.
- set fill color: fillecolor(r, g, b)
- start filling: begin_fill()
- end filling: end_fill()
Exercise 1
Take the exercise code of the last drawing and initialize a fill color first. Then, use begin_fill() before drawing each figure and end_fill() after drawing. This will give you a fill effect. Only the graphics that fill the upper right and lower left corners are selected here.
import turtle as t
import random as r
def pink():
color = (1, r.random(), 1)
return color
def randomrange(min, max):
return min + (max- min)*r.random()
def moveto(x, y):
t.penup()
t.goto(x, y)
t.pendown()
def heart(r, a):
factor = 180
t.seth(a)
t.circle(-r, factor)
t.fd(2 * r)
t.right(90)
t.fd(2 * r)
t.circle(-r, factor)
t.setup(800, 800, 200, 200)
t.speed(9)
t.pensize(1)
t.penup()
for i in range(20):
t.goto(randomrange(-300, 300), randomrange(-300, 300))
t.begin_fill()
t.fillcolor(pink())
heart(randomrange(10, 50), randomrange(0, 90))
t.end_fill()
moveto(400, -400)
t.done()operation result
Exercise 2
Draw a set of randomly distributed, random sizes and different shades of hearts.
import turtle as t
import random as r
def randomcolor():
color = (r.random(), r.random(), r.random())
return color
def pink():
color = (1, r.random(), 1)
return color
def randomrange(min, max):
return min + (max- min)*r.random()
def moveto(x, y):
t.penup()
t.goto(x, y)
t.pendown()
def heart(r, a):
factor = 180
t.seth(a)
t.circle(-r, factor)
t.fd(2 * r)
t.right(90)
t.fd(2 * r)
t.circle(-r, factor)
# set canvas dimension
t.setup(800, 800, 200, 200)
t.speed(9)
t.pensize(1)
t.pencolor(randomcolor())
t.fillcolor(randomcolor())
t.penup()
for i in range(20):
t.goto(randomrange(-300, 300), randomrange(-300, 300))
t.begin_fill()
t.fillcolor(pink())
heart(randomrange(10, 50), randomrange(0, 90))
t.end_fill()
moveto(400, -400)
t.done()