As the first step we create a wheel with a single spoke. We will then extend it to create a wheel with 5 spokes.
The code for creating a circle with one spoke is as shown:
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from PIL import Image, ImageDraw
import numpy as np
def create_one_spoke_image(filename="one_spoke.png"):
img_size = 500
center = (img_size // 2, img_size // 2)
radius = img_size // 4
img = Image.new("RGB", (img_size, img_size), "white")
draw = ImageDraw.Draw(img)
# Draw the circle
draw.ellipse((center[0] - radius, center[1] - radius, center[0] + radius, center[1] + radius), fill="black")
# Draw ONE spoke (at 0 degrees for simplicity)
x1 = center[0]
y1 = center[1]
x2 = center[0] + radius # Spoke extends to the right
y2 = center[1]
draw.line((x1, y1, x2, y2), fill="red", width=3)
img.save(filename)
print(f"Saved: {filename}")
img.show()
if __name__ == "__main__":
create_one_spoke_image()
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Here is the complete explanation of the code:
from PIL import Image, ImageDraw
import numpy as np
from PIL import Image, ImageDraw:
This line imports the Image and ImageDraw classes from the Python Imaging Library (PIL), also known as Pillow.
Image is used to create and manipulate image objects.
ImageDraw is used to draw shapes and lines on those image objects.
import numpy as np:
While numpy is imported, in this specific code provided, it is not actually utilized. If future modifications were to be made to the code, and array manipulation was needed, numpy would then be used.
2. Creating a Blank Image:
img_size = 500
img = Image.new("RGB", (img_size, img_size), "white")
img_size = 500:
This sets the size of the image to 500 pixels by 500 pixels.
img = Image.new("RGB", (img_size, img_size), "white"):
This creates a new image object.
"RGB" specifies that the image will be in RGB color mode (red, green, blue).
(img_size, img_size) sets the dimensions of the image.
"white" sets the initial background color of the image to white.
3. Creating a Draw Object:
draw = ImageDraw.Draw(img)
draw = ImageDraw.Draw(img):
This creates a Draw object associated with the img image.
The Draw object provides methods for drawing shapes, lines, and text onto the image.
4. Drawing a Circle:
center = (img_size // 2, img_size // 2)
radius = img_size // 4
draw.ellipse((center[0] - radius, center[1] - radius, center[0] + radius, center[1] + radius), fill="black")
center = (img_size // 2, img_size // 2):
This calculates the center coordinates of the image.
radius = img_size // 4:
This calculates the radius of the circle, which is one-quarter of the image size.
draw.ellipse(...):
This draws an ellipse (which will be a circle in this case, due to the equal width and height).
The coordinates (center[0] - radius, center[1] - radius, center[0] + radius, center[1] + radius) define the bounding box of the ellipse.
fill="black" sets the fill color of the circle to black.
5. Drawing a Spoke:
x1 = center[0]
y1 = center[1]
x2 = center[0] + radius # Spoke extends to the right
y2 = center[1]
draw.line((x1, y1, x2, y2), fill="red", width=3)
x1 = center[0], y1 = center[1]:
These set the starting coordinates of the line (the spoke) to the center of the image.
x2 = center[0] + radius, y2 = center[1]:
These set the ending coordinates of the line. The spoke extends horizontally to the right, to the edge of the circle.
draw.line(...):
This draws a line between the starting and ending coordinates.
fill="red" sets the color of the line to red.
width=3 sets the thickness of the line to 3 pixels.
6. Saving the Image:
img.save(filename)
print(f"Saved: {filename}")
img.show()
img.save(filename):
This saves the created image to a file with the specified filename.
print(f"Saved: {filename}"):
This prints a confirmation message to the console.
img.show(): This line displays the image on a related printer as shown.
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When you run this code you will see the following:
