What Is a Good Way to Draw Images Using Pygame

How to draw images and sprites in pygame?

This is a typical layout:

myimage = pygame.image.load("myimage.bmp")
imagerect = myimage.get_rect()

while 1:
    your_code_here

    screen.fill(black)
    screen.blit(myimage, imagerect)
    pygame.display.flip()

How can you draw more detailed/smoother images in pygame?

Use pygame.transform.smoothscale instead of pygame.transform.scale:

img = pygame.transform.scale(img, (500,500))

img = pygame.transform.smoothscale(img, (500,500))

While pygame.transform.scale performs a fast scaling with the nearest pixel, pygame.transform.smoothscale scales a surface smoothly to any size with interpolation of the pixels.

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For an even better result, you may want to switch to a vector graphic format such as SVG (Scalable Vector Graphics).

See the answers to the question SVG rendering in a PyGame application a nd the following minimal example:

import pygame

pygame.init()
window = pygame.display.set_mode((300, 300))
clock = pygame.time.Clock()

pygame_surface = pygame.image.load('Ice.svg')

run = True
while run:
    clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    window.fill((127, 127, 127))
    window.blit(pygame_surface, pygame_surface.get_rect(center = window.get_rect().center))
    pygame.display.flip()

pygame.quit()
exit()

Drawing shapes versus rendering images?

It is easer to use pygame.draw.rect() or pygame.draw.polygon() (because you don't need to know how to use GIMP or InkScape :) ) but you have to draw it on another pygame.Surface() (to get bitmap) and than you can rotate it, add alpha (to make transparet) and than you can put it on screen.

You can create function to generate images (using Surface()) with all shapes in different orientations at program start. If you will need better looking images you can change function to load images created in GIMP.

Try every method on your own - this is the best method to check which one is good for you.

By the way: you can save generated images pygame.image.save() and then load it. You can have all elements on one image and use part of image Surface.get_clip()

Python pygame converting drawing to an image

Create a surface with the same size as the display and the background color:

grid_surf = pygame.Surface((width, height))
grid_surf.fill((255,255,120))

Draw the grid to this surface:

def drawgrid(surf):
    for x in range(0, width, 40):
        pygame.draw.rect(surf, (0, 0, 0), (x, 0, 2, height))
    for y in range(0, height, 40):
        pygame.draw.rect(surf, (0, 0, 0), (0, y, width, 2))

drawgrid(grid_surf)

And blit the surface in the main application loop instead of drawing the grid and background:

screen.blit(grid_surf, (0, 0))

Example code:

import pygame
pygame.init()

width, height = 800, 600
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption('grid')

def drawgrid(surf):
    for x in range(0, width, 40):
        pygame.draw.rect(surf, (0, 0, 0), (x, 0, 2, height))
    for y in range(0, height, 40):
        pygame.draw.rect(surf, (0, 0, 0), (0, y, width, 2))

grid_surf = pygame.Surface((width, height))
grid_surf.fill((255,255,120))
drawgrid(grid_surf)

running = True
while running:

    screen.blit(grid_surf, (0, 0))
    pygame.display.flip()

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running == False
            pygame.quit()

PyGame - how to draw images in a loop

You are constantly modifying the rect of the same object. That can’t work.

Instead create a list of coordinates and blit the same image to different destinations based on that list.

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