Answered: randomizing the angle the turtle turns.…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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In Python 3

You can create a more interesting and realistic-looking tree by

randomizing the angle the turtle turns. Rather than always using a 30 degree angle, select an angle between 15 and 45 degrees.
randomizing how much the branches shrink each time you make a recursive call. Instead of always subtracting 15, try subtracting a random amount between 5 and 25.
add color to the tree by making the large branches brown, and the small branches green. Choose a threshold value (or use the existing value 5) for the length of the trunk and set the color accordingly.

Here is a simple version that creates a "dot" in the base case (for a leaf). Your program output does not have to be the same. (Check picture)

import turtle

def tree(t, trunkLength):
if trunkLength < 5: #check for base case
return
else:
t.forward(trunkLength)
t.right(30)
tree(t, trunkLength - 15)
t.left(60)
tree(t, trunkLength - 15)
t.right(30)
t.backward(trunkLength)

import turtle
t = turtle.Turtle()
t.left(90)
trunkLength = 100
tree(t, trunkLength)

In Python 3
You can create a more interesting and realistic looking tree by
a. randomizing the angle the turtle turns. Rather than always using a 30 degree
angle, select an angle between 15 and 45 degrees.
b. randomizing how much the branches shrink each time you make a recursive call.
Instead of always subtracting 15, try subtracting a random amount between 5 and
25.
c. add color to the tree by making the large branches brown, and the small branches
green. Choose a threshold value (or use the existing value 5) for the length of the
trunk and set the color accordingly.
Here is a simple version that creates a "dot" in the base case (for a leaf). Your
program output does have to be similar.

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