Implementation Example of Pygame Transform Image Deformation

The pygame. transform module allows you to perform a series of operations on loaded and created images, such as resizing images, rotating images, etc. The common methods are as follows:

Let's look at a set of simple demonstration examples:

import pygame
# Introduce pygame All constants in, such as  QUIT
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((500,250))
pygame.display.set_caption('c Language Chinese Network ')
# Loading 1 Pictures ( 455*191)
image_surface = pygame.image.load("C:/Users/Administrator/Desktop/c-net.png").convert()
image_new = pygame.transform.scale(image_surface,(300,300))
#  View the object type of the newly generated picture 
#print(type(image_new))
#  Rotate the newly generated image to 45 Degrees 
image_1 =pygame.transform.rotate(image_new,45)
#  Use rotozoom()  Rotate  0  Degree, reduce the image 0.5 Times 
image_2 = pygame.transform.rotozoom(image_1,0,0.5)
while True:
    for event in pygame.event.get():
        if event.type == QUIT:
            exit()
    #  The last generated image_2 Add to the display screen 
    screen.blit(image_2,(0,0))
    pygame.display.update()

Implementation example

import pygame

pygame.init()
screen = pygame.display.set_mode((960, 600))
pygame.display.set_caption(" Image transformation ")
img = pygame.image.load(' Horse .jpg')
clock = pygame.time.Clock()

img1=pygame.transform.flip(img,False, True)  # The image is flipped horizontally and vertically 
# Parameter 1 Image to flip 
# Parameter 2 Whether horizontal is flipped or not 
# Parameter 3 Whether vertical is flipped or not 
# Return 1 New images 

while True:
    t = clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            exit()
    screen.blit(img1,(100,50))
    pygame.display.update()

img1 = pygame.transform.scale(img, (200, 100))  # Zoom 
# Parameter 2 Width and height of new image 

img1 = pygame.transform.smoothscale(img,(400,300))  # Smooth scaling image 
# This function only applies to 24 Bit or 32 Bit surface .   If the input surface bit depth is less than 24 An exception is thrown 

img1 = pygame.transform.scale2x(img)  # Fast double-size magnification 

img = pygame.image.load(' Horse .jpg')
img1 = pygame.transform.rotate(img, 30)  # Rotating image 
# Parameter 2 Angle to rotate -- Positive numbers denote counterclockwise -- Negative numbers indicate clockwise 
# Unless with 90 Otherwise, the image will be filled to a larger size.   If the image has pixels alpha The padding area will be transparent 
# Rotation is around the center 

img1 = pygame.transform.rotozoom(img, 30.0, 2.0)  # Zoom + Rotate 
# No. 1 1 Specifies the image to be processed, the 2 The number of parameters specifies the number of angles to rotate, the 3 Parameters specify the scale 
# This function will filter the image, and the image will be better, but the speed will be much slower 

img1 = pygame.transform.chop(img, (0, 0, 100, 50))  # Cut the image 
# No. 1 1 Parameter specifies the image to be trimmed, and the 2 Parameters specify the area of the image to preserve 

img = pygame.image.load(' Horse .jpg')
img1 = pygame.transform.laplacian(img)  # Find edge -- Outline 

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