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Introduction
Pygame is a Python-based multimedia toolkit for creating games and other multimedia applications. In this course, the pygame module will be used to create various forms on the screen while considering their height, width, and position inside the pygame window.
Pygame is a Python wrapper for SDL, which stands for Simple DirectMedia Layer. SDL allows you to access your system's multimedia hardware from any platform, including sound, video, mouse, keyboard, and joystick. To replace the now-defunct PySDL project, the pygame project was formed. Since they are cross-platform, you can develop games and rich multimedia Python programs on any device that supports SDL and pygame since they are cross-platform!
Pygame
We'll learn how to Rotate and Scale a picture in this post. Picture Scaling is the process of scaling an image, whereas Image Rotation is rotating an appearance at an angle. In the coordinate plane, rotations are counterclockwise. Let's look at the methods utilized and the whole code used to achieve these tasks.
Scaling the Image
We use the pygame.transform.scale(image, DEFAULT IMAGE SIZE) function to scale the picture, passing the image to be mounted and the default image size we will modify manually according to our needs.
To rotate an image, we use the pygame.transform.rotate(image, degree) function, passing the image to be rotated and the degree by which it should be turned.
Example:
# Import pygame
import pygame
# Initialise pygame
pygame.init()
# Set window size
size = width,height = 600, 600
screen = pygame.display.set_mode(size)
# Clock
clock = pygame.time.Clock()
# Load image
image = pygame.image.load('cn_pygame.png')
# Set the size for the image
DEFAULT_IMAGE_SIZE = (200, 200)
# Rotate the image by any degree
image = pygame.transform.rotate(image, 180)
# Set a default position
DEFAULT_IMAGE_POSITION = (200,200)
# Prepare loop condition
running = False
# Event loop
while not running:
# Close window event
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = True
# Background Color
screen.fill((0, 0, 0))
# Show the image
screen.blit(image, DEFAULT_IMAGE_POSITION)
# Part of event loop
pygame.display.flip()
clock.tick(30)
You can also try this code with Online Python Compiler
Let's look at how to conduct Scaling and Rotation on a given image. We'll choose an acceptable default image size and a default picture position on the window screen where we want to see our image. Scaling and rotation of the picture will be done using the same procedures.
Example:
# Import pygame
import pygame
# Initialise pygame
pygame.init()
# Set window size
sz = width,height = 600, 600
scrn = pygame.display.set_mode(sz)
# Clock
clck = pygame.time.Clock()
# Load image
img = pygame.image.load('cn_pygame.png')
# Set the size for the image
DFLT_IMG_SZ = (200, 200)
# Scale the image to your needed size
img = pygame.transform.scale(image, DFLT_IMG_SZ)
# Rotate the image by any degree
img = pygame.transform.rotate(img, 90)
# Set a default position
DFLT_IMG_POSITION = (200,200)
# Prepare loop condition
running = False
# Event loop
while not running:
# Close window event
for vnt in pygame.event.get():
if vnt.type == pygame.QUIT:
running = True
# Background Color
screen.fill((0, 0, 0))
# Show the image
screen.blit(image, DFLT_IMG_POSITION)
# Part of event loop
pygame.display.flip()
clock.tick(30)
You can also try this code with Online Python Compiler
pygame. transform. rotate may rotate an image (pygame. Surface).
How do you scale a surface in pygame?
pygame. transform. scale is the resizing method you're searching for. It will return a new surface or insert the result into an already generated cover if you pass it a character and the new size you desire (this is faster).
How do you scale an image in pygame?
We use the pygame. transform. scale(image, DEFAULT IMAGE SIZE) function to scale the picture, passing the image to be mounted and the default image size to be changed manually according to our needs.
What is pygame display Flip ()?
flip() is a function for software displays. It just permits a section of the screen to be refreshed, rather than the complete screen. If no argument is given, it restores the whole Surface area in the same way as pygame does.
What is the Pygame surface?
A surface may represent a game written in Python or Any image. The Surface has a set pixel format and resolution. Color palettes are used to translate 8-bit pixels to 24-bit color on surfaces. To use pygame, type pygame on the command prompt. To build a new image object, use the Surface() pygame object for expressing pictures.
Conclusion
After reading about Rotating and Scaling the image in pygame, In Pygame, rotating and scaling images allow for dynamic transformations, enhancing gameplay visuals. However, repeated transformations can cause quality loss due to resampling. To maintain quality, it's best to work with the original image and apply transformations as needed.
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