读取json文件切割图集

# -*- coding: utf-8 -*- import os,sys import json import os import os.path from PIL import Image def json_to_dict(json_filename): json_file = open(json_filename, 'r') all_pic_dic = json.load(json_file) all_item_list = [] for one_pic_item in all_pic_dic['res']: one_json_item = all_pic_dic['res'][one_pic_item] one_item = {} one_item['name'] = one_pic_item.strip().lstrip().rstrip(',') one_item['x'] = one_json_item['x'] one_item['y'] = one_json_item['y'] one_item['w'] = one_json_item['w'] one_item['h'] = one_json_item['h'] all_item_list.append(one_item) return all_item_list def gen_png_from_json(folder_name, json_filename, png_filename): big_image = Image.open(png_filename) all_item_list = json_to_dict(json_filename) print 'gen_png_from_json:' + folder_name #清理掉原目录 if not os.path.isdir(folder_name): #os.removedirs(folder_name) os.mkdir(folder_name) for i, one_item_data in enumerate(all_item_list): file_name = one_item_data['name'] x = one_item_data['x'] y = one_item_data['y'] w = one_item_data['w'] h = one_item_data['h'] #设置图像裁剪区域 (x左上，y左上，x右下,y右下) image_box = [x, y, x + w , y + h ] one_pic = big_image.crop(image_box) one_pic.save(folder_name + "/" + file_name + '.png') # 存储裁剪得到的图像 #print one_item_data if __name__ == '__main__': rootdir = sys.argv[1] #'E:/_github/Python/TexturePacker' file_name_set = set() if os.path.exists(rootdir): list_file = os.listdir(rootdir) for i in range(0,len(list_file)): one_file_name = list_file[i] path = os.path.join(rootdir, one_file_name) if os.path.isfile(path): file_name_set.add(os.path.splitext(one_file_name)[0]) for file_name in file_name_set: json_filename = os.path.join(rootdir, file_name) + '.json' png_filename = os.path.join(rootdir, file_name) + '.png' jpg_filename = os.path.join(rootdir, file_name) + '.jpg' if os.path.exists(json_filename): if os.path.exists(png_filename): try: gen_png_from_json(os.path.join(rootdir, file_name), json_filename, png_filename ) except Exception: print '!!!!!!!!!!!!!!!!!!!!' + json_filename + ' json error !!!!!!!!!!!!!!!!!!!!!' elif os.path.exists(jpg_filename): try: gen_png_from_json(os.path.join(rootdir, file_name), json_filename, jpg_filename ) except Exception: print '!!!!!!!!!!!!!!!!!!!!' + json_filename + ' json error !!!!!!!!!!!!!!!!!!!!!'