Design And Development Of 3D Campus Class Early Warning Based On WebGIS

Since the beginning of the 21 st century,information technology has developed rapidly,and the information age has arrived.The advent of the information age has dramatically changed the way people manage things,and it has also changed the way people make decisions.As a representative of information industrialization,Geographic Information System(GIS)integrates unique map visualization effects,spatial analysis functions and database operations,which can easily realize the planning and processing of massive spatial data.Aiming at the development and maintenance of traditional campus system,a three-dimensional campus early warning system based on WebGIS is designed.The ArcGIS API for JavaScript front-end development framework is used to implement a data-driven rendering of a three-dimensional campus system using a local PostgreSQL database.The main work and results of this paper are as follows:1.Summarizes the research background and significance of the topic,expounds the status quo of the GIS system at home and abroad,and the basic technology of system development,and further introduces the front-end framework ArcGIS API for JavaScript,3D modeling,back-end framework SSH,WebSocket real-time communication,mobile development and other key technologies.2.On the basis of the overall system requirements,the overall analysis is carried out in terms of performance requirements,functional requirements,front-end framework requirements,etc.,to determine the overall objectives and application framework of the system development,and to design the functional structure of the system.3.The system's overall application layer,service layer and data layer three-layer structure are designed.Based on ArcGIS API for JavaScript front-end development technology and mobile communication technology,the system technical route and system function modules are designed,and the system space database and attribute database are designed in detail..4.Taking a campus as the object,the students are late for class,and the main function module of the student's class warning is realized based on the ArcGIS API for JavaScript framework.In addition,the system also implements the loading of 3D campus scenes and basemap slices,campus roaming,and layering.Accessibility features such as layer display,layer filtering,query positioning,graphic addition and deletion.System operation and test results demonstrate the effectiveness of the development system.