Write a program that draws a stoplight. You should have a gray rectangle, and then three circles in the rectangle. The circles should be red, then yellow, then green. You should use the drawCircle function from the video.

Question

Write a program that draws a stoplight. You should have a gray rectangle, and then three circles in the rectangle. The circles should be red, then yellow, then green. You should use the drawCircle function from the video.

The rectangle should be centered on the screen. The yellow light should be centered on the screen, and the red and green light should be offset by BUFFER amount.

Answer 1

import turtle

# Set up the screen
wn = turtle.Screen()
wn.bgcolor("lightgray")
wn.title("Stoplight")

# Draw the rectangle
turtle.penup()
turtle.goto(-50, -50)
turtle.pendown()
turtle.fillcolor("gray")
turtle.begin_fill()
for i in range(2):
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.end_fill()

# Draw the circles
BUFFER = 20
turtle.penup()
turtle.goto(-25, 0)
turtle.fillcolor("red")
turtle.pendown()
turtle.begin_fill()
turtle.circle(25)
turtle.end_fill()

turtle.penup()
turtle.goto(0, 0)
turtle.fillcolor("yellow")
turtle.pendown()
turtle.begin_fill()
turtle.circle(25)
turtle.end_fill()

turtle.penup()
turtle.goto(25 + BUFFER, 0)
turtle.fillcolor("green")
turtle.pendown()
turtle.begin_fill()
turtle.circle(25)
turtle.end_fill()

# Hide the turtle
turtle.hideturtle()

# Exit on click
wn.exitonclick()

Answer 2

i am losing my mind here. does this actually work?

even if it doesn't work, it's a good start anyway. i can't believe it

Answer 3

Sure! Here's a step-by-step guide to write a program in Python that draws a stoplight:

Step 1: Import the necessary libraries
```
import turtle
```

Step 2: Configure screen size and background color
```
screen = turtle.Screen()
screen.setup(width=400, height=400)
screen.bgcolor("lightgray")
```

Step 3: Define a function to draw a filled circle with a given color and radius
```
def draw_circle(color, radius):
turtle.begin_fill()
turtle.fillcolor(color)
turtle.circle(radius)
turtle.end_fill()
```

Step 4: Calculate the positioning of the rectangle and the circles
```
BUFFER = 50
rectangle_width = 150
rectangle_height = 300

rectangle_x = -rectangle_width / 2
rectangle_y = -rectangle_height / 2

red_circle_x = rectangle_x + BUFFER
red_circle_y = rectangle_y - BUFFER

green_yellow_circle_x = rectangle_x + rectangle_width / 2
green_circle_y = rectangle_y - BUFFER
yellow_circle_y = green_circle_y + rectangle_height / 4
```

Step 5: Draw the gray rectangle
```
turtle.penup()
turtle.goto(rectangle_x, rectangle_y)
turtle.pendown()
turtle.color("black")
turtle.begin_fill()
for _ in range(2):
turtle.forward(rectangle_width)
turtle.left(90)
turtle.forward(rectangle_height)
turtle.left(90)
turtle.end_fill()
```

Step 6: Draw the red, yellow, and green circles
```
turtle.penup()
turtle.goto(red_circle_x, red_circle_y)
turtle.pendown()
draw_circle("red", 50)

turtle.penup()
turtle.goto(green_yellow_circle_x, green_circle_y)
turtle.pendown()
draw_circle("green", 50)

turtle.penup()
turtle.goto(green_yellow_circle_x, yellow_circle_y)
turtle.pendown()
draw_circle("yellow", 50)
```

Step 7: Move turtle outside the drawing area and hide it
```
turtle.penup()
turtle.goto(0, -200)
turtle.hideturtle()
```

Step 8: Complete the program and keep the screen open until closed by the user
```
turtle.done()
```

And that's it! Running this program will draw a stoplight as described.

Answer 4

To write a program that draws a stoplight with a gray rectangle and three circles, you can use a programming language that supports graphical drawing, such as Python with the turtle module. Here's a step-by-step guide on how to accomplish this:

1. Set up a programming environment with Python and the turtle module installed.

2. Import the turtle module and initialize the turtle object.
```python
import turtle

# Initialize turtle
my_turtle = turtle.Turtle()
my_turtle.speed(0)
```

3. Define the necessary variables for the stoplight layout, such as the dimensions of the rectangle and the offset value.
```python
# Dimensions of the rectangle
rect_width = 200
rect_height = 400

# Offset value for red and green lights
buffer = 100
```

4. Draw the gray rectangle centered on the screen.
```python
def draw_rectangle(width, height):
my_turtle.penup()
my_turtle.goto(-width / 2, -height / 2)
my_turtle.pendown()
my_turtle.color("gray")
my_turtle.begin_fill()
for _ in range(2):
my_turtle.forward(width)
my_turtle.left(90)
my_turtle.forward(height)
my_turtle.left(90)
my_turtle.end_fill()

draw_rectangle(rect_width, rect_height)
```

5. Define a function to draw a circle with a given position and color.
```python
def draw_circle(x, y, radius, color):
my_turtle.penup()
my_turtle.goto(x, y)
my_turtle.pendown()
my_turtle.color(color)
my_turtle.begin_fill()
my_turtle.circle(radius)
my_turtle.end_fill()

# Calculate the x and y positions for the circles
yellow_x = 0
yellow_y = 0
red_x = yellow_x - buffer
red_y = yellow_y
green_x = yellow_x + buffer
green_y = yellow_y

# Define the radius of the circles
circle_radius = 80

# Draw the circles
draw_circle(red_x, red_y, circle_radius, "red")
draw_circle(yellow_x, yellow_y, circle_radius, "yellow")
draw_circle(green_x, green_y, circle_radius, "green")
```

6. Finally, call the main turtle module functions to display the stoplight.
```python
# Hide the turtle cursor
my_turtle.hideturtle()

# Keep the window open until closed manually
turtle.done()
```

That's it! When you run the program, it will draw a stoplight with a gray rectangle and three circles (red, yellow, and green) on the screen. The yellow light will be centered, while the red and green lights will be offset by the specified BUFFER amount.