解析atlas文件

有些引擎比如libgdx打包图片资源时，是atlas。

想获取资源就要解析了。把这个文件放到要解析的资源文件夹下面编译输入要解析的文件名就可以了。

# -*- coding: utf-8 -*-import osimport sysimport os.pathimport shutilimport ImagefileName = raw_input('输入要解析的文件名:')if fileName.find('.png') != -1:    fileName = fileName[:-4]pngName = fileName + '.png'atlasName = fileName + '.atlas'print pngName,atlasNamebig_image = Image.open(pngName)atlas = file(atlasName, "r");curPath = os.getcwd()# 当前路径aim_path = os.path.join(curPath, fileName)print aim_pathif os.path.isdir(aim_path):    shutil.rmtree(aim_path,True)#如果有该目录,删除os.makedirs(aim_path)#_line = atlas.readline();_line = atlas.readline();_line = atlas.readline();_line = atlas.readline();while True:    line1 = atlas.readline() # name    if len(line1) == 0:        break    else:        line2 = atlas.readline() # rotate        line3 = atlas.readline() # xy        line4 = atlas.readline() # size        line5 = atlas.readline() # orig        line6 = atlas.readline() # offset        line7 = atlas.readline() # index                name = line1.replace("\n","") + ".png";                args = line4.split(":")[1].split(",");        width = int(args[0])        height= int(args[1])                    args = line3.split(":")[1].split(",");        ltx = int(args[0])        lty = int(args[1])                    rbx = ltx+width        rby = lty+height                print name,width,height,ltx,lty,rbx,rby        result_image = Image.new("RGBA", (width,height), (0,0,0,0))        rect_on_big = big_image.crop((ltx,lty,rbx,rby))        print(rect_on_big)        result_image.paste(rect_on_big, (0,0,width,height))        result_image.save(aim_path+'/'+name)atlas.close()del big_image