Method parm_float

tutorials/common/scenegraph/xml_parser.h:45–49

    }

    float parm_float(const std::string& parmID) const {
      std::map<std::string,std::string>::const_iterator i = parms.find(parmID);
      if (i == parms.end()) THROW_RUNTIME_ERROR (loc.str()+": XML node has no parameter \"" + parmID + "\"");
      return std::stof(i->second);
    }

    /*! returns the nth child */
    const Ref<XML> child(const size_t id) const