struct Texture2D{TextureUnique* textureUnique;int     width;int     height;Vec2 uv[4];};

bool TexturePool::ParsePlistFile(const std::string& filename, std::vector<PlistParseData>& ppd_list){tinyxml2::XMLDocument doc;auto path = PathHelper::fullPath(filename);if ( doc.LoadFile(path.c_str()) != tinyxml2::XML_NO_ERROR ) {LOG_WRITE_DEBUG("不存在 plist 文件：%s", filename.c_str());return false;}tinyxml2::XMLElement* frame_ele = nullptr;tinyxml2::XMLElement* context_ele = nullptr;tinyxml2::XMLNode* plist_node = doc.RootElement();plist_node = plist_node->FirstChildElement();frame_ele = plist_node->FirstChildElement();tinyxml2::XMLElement* begin_node = frame_ele->NextSiblingElement()->FirstChildElement();std::string left, right;while ( begin_node ) {PlistParseData ppd;ppd.filename = begin_node->GetText();context_ele = begin_node->NextSiblingElement();context_ele = context_ele->FirstChildElement("string");std::string size = context_ele->GetText();/* {{xx, xx},{xx, xx}} */left = size.substr(2, size.find_first_of("}") - 2);right = left.substr(left.find_first_of(",") + 1, left.size() - left.find_first_of(","));left = left.substr(0, left.find_first_of(","));ppd.offsetx = atoi(left.c_str());ppd.offsety = atoi(right.c_str());right = size.substr(size.find_last_of("{") + 1, size.size() - size.find_last_of("{") - 3);left = right.substr(0, right.find_first_of(","));right = right.substr(right.find_first_of(",") + 1, right.size() - right.find_first_of(","));ppd.width = atoi(left.c_str());ppd.height = atoi(right.c_str());context_ele = context_ele->NextSiblingElement();context_ele = context_ele->NextSiblingElement();context_ele = context_ele->NextSiblingElement();context_ele = context_ele->NextSiblingElement();std::string rotate = context_ele->Name();ppd.rotate = (rotate.compare("true") == 0);begin_node = begin_node->NextSiblingElement();begin_node = begin_node->NextSiblingElement();ppd_list.push_back(ppd);}/* 获取图像文件名 */frame_ele = frame_ele->NextSiblingElement();frame_ele = frame_ele->NextSiblingElement();frame_ele = frame_ele->NextSiblingElement();tinyxml2::XMLElement* metadata = frame_ele->FirstChildElement("string");std::string texture_name = metadata->GetText();metadata = metadata->NextSiblingElement("string");std::string texture_size = metadata->GetText();int dot = texture_size.find_first_of(",");PlistParseData ppd;ppd.filename = texture_name;ppd.width    = atoi(texture_size.substr(1, dot - 1).c_str());ppd.height   = atoi(texture_size.substr(dot + 1, texture_size.size() - dot - 2).c_str());ppd_list.push_back(ppd);return true;}

        struct PlistParseData{std::string filename;bool rotate;int offsetx;int offsety;int width;int height;};

bool TexturePool::LoadFileFromPlist(const std::string& filename){std::vector<PlistParseData> ppd_list;if ( ParsePlistFile(filename, ppd_list) == false ) {LOG_WRITE("解析文件 %s 失败！", filename.c_str());return false;}TextureUnique* texture_unique = new TextureUnique(ppd_list.back().filename.c_str());for ( int i = 0; i < ppd_list.size() - 1; i++ ) {PlistParseData& ppd = ppd_list[i];Texture2D* texture_2d = new Texture2D;texture_2d->textureUnique = texture_unique;texture_2d->width = ppd.width;texture_2d->height = ppd.height;/* 计算纹理坐标 */Vec2 p1, p2;if ( ppd.rotate ) {p1.x = ( float ) ppd.offsetx / texture_unique->width;p1.y = 1 - ( float ) (ppd.offsety + ppd.width) / texture_unique->height;p2.x = ( float ) (ppd.offsetx + ppd.height) / texture_unique->width;p2.y = 1 - ( float ) ppd.offsety / texture_unique->height;texture_2d->uv[3].set(p1.x, p1.y);texture_2d->uv[0].set(p1.x, p2.y);texture_2d->uv[1].set(p2.x, p2.y);texture_2d->uv[2].set(p2.x, p1.y);}else {p1.x = ( float ) ppd.offsetx / texture_unique->width;p1.y = 1- ( float ) (ppd.offsety + ppd.height) / texture_unique->height;p2.x = ( float ) (ppd.offsetx + ppd.width) / texture_unique->width;p2.y = 1- ( float ) ppd.offsety / texture_unique->height;texture_2d->uv[0].set(p1.x, p1.y);texture_2d->uv[1].set(p1.x, p2.y);texture_2d->uv[2].set(p2.x, p2.y);texture_2d->uv[3].set(p2.x, p1.y);}vTextureMap.insert(std::make_pair(ppd.filename, texture_2d));}return true;}