pygame is
Python
Simple DirectMedia Layer
 
 
pygame.org is
Site Swing
Wiki

ImagePacker

      
Search:  
 
 

These two classes can pack surfaces of different sizes into one big surface.

import pygame
 
class PackNode(object):
    """
    Creates an area which can recursively pack images into itself.
    """
    def __init__(self, area):
        # if tuple contains two elements, assume they are width and height,
        # and origin is (0,0)
        if len(area) == 2:
            area = (0,0,area[0],area[1])
        self.area = area
 
    def get_width(self):
        return self.area[2] - self.area[0]
    width = property(fget=get_width)
 
    def get_height(self):
        return self.area[3] - self.area[1]
    height = property(fget=get_height)
 
    def insert(self, area):
        if hasattr(self, 'child'):
            a = self.child[0].insert(area)
            if a is None: return self.child[1].insert(area)
            return a
 
        area = PackNode(area)
        if area.width <= self.width and area.height <= self.height:
            self.child = [None,None]
            self.child[0] = PackNode((self.area[0]+area.width, self.area[1],
                self.area[2], self.area[1] + area.height))
            self.child[1] = PackNode((self.area[0], self.area[1]+area.height,
                self.area[2], self.area[3]))
            return PackNode((self.area[0], self.area[1],
                self.area[0]+area.width, self.area[1]+area.height))
 
 
class Pack(object):
    def __init__(self, size=(512,512)):
        self.tree = PackNode(size)
        self.image = pygame.Surface(size, pygame.SRCALPHA, 32)
        self.wr = 1.0 / float(size[0])
        self.hr = 1.0 / float(size[1])
        
    def pack(self, img):
        wr = self.wr
        hr = self.hr
        if not isinstance(img, pygame.Surface):
            img = pygame.image.load(img).convert(32, pygame.SRCALPHA)
            img = img.convert_alpha(img)
        uv = self.tree.insert(img.get_size())
        if uv is None: raise ValueError('Pack size too small.')
        area = tuple(uv.area)
        self.image.blit(img, area)
        uv = area[0] * wr, area[1] * hr, area[2] * wr, area[3] * hr
        return (uv[0],uv[1]),(uv[0], uv[3]), (uv[2],uv[3]), (uv[2], uv[1])
 
 
if __name__ == "__main__":
    import time
    import glob
 
    pygame.init()
    s = pygame.display.set_mode((512,512))
    p = Pack()
    for filename in glob.glob("*.png"):
        p.pack(filename)
    pygame.image.save(p.image, 'out.png')
    s.blit(p.image, (0,0))
    pygame.display.flip()
    time.sleep(1)
spotlight

 
our projects
pygame.org welcomes all python game, art, music, sound, video and multimedia projects. If they use pygame or not.
 
recent releases
Dec 16, 2014


Dec 14, 2014

Dec 9, 2014

Dec 6, 2014

Dec 5, 2014

Dec 3, 2014

Nov 27, 2014


Nov 13, 2014

Nov 11, 2014


... more!
 
for pygame related questions, comments, and suggestions, please see help (lists, irc)