## 5 Results and Future Studies
### Future Studies  
The platform of this study can integrate different fields of expertise, and when such different fields can be linked to more databases, the platform will have more application capabilities. At present, this platform can link 3D-GIS macro information and Unity to simulate and display the macro building environment. As the current version can only read and display, the integration of Unity and the GIS coordinate system means every building must have its longitude and latitude coordinates to complete the information model, which shows that links between coordinates and databases will strengthen the overall platform for the future developments of environmental assessment simulation. In addition, the short-term goal of the next stage is to realize a linking application for the BIM model and Unity. At present, the BIM Revit model information is extracted through Revit Dynamo (parameter tool), while Unity is used for the visualization and interactive application of historical building components. The goal of this study was to integrate BIM and 3 DGIS into the Unity environment, so that different platforms can work together and avoid format problems caused by data exchange between different platforms, and thus, carry out two-way link updates during game execution. All changes are expected to be automatically transmitted and updated between the different environments. The development of this platform has the key technologies for the integration of different professional fields. Combined with the GIS coordinate system, each building has its latitude and longitude coordinates, which will be helpful for future development. For the disadvantage of model data that can only be imported into the Unity environment in one direction, it is also expected that it can be broken through the platform. Both the entity model and attribute data can be a bidirectional update in Unity and ArcGIS will be our future efforts. The Unity platform that can be developed in the future include the following three points:  
1. In the future, our platform can link with more different databases to build a more complete integrated system platform. 2. A Web-based platform can be developed to navigate the city model. 3. It is allowed to add LBS (location-based services) and use latitude and longitude to connect with real world for more applications. In this research, we successfully used the game technology to improve the visibility and interactivity of spatial data, and performed platform implementation and usage evaluation. The assessment has the task of linking spatial data and 3D visualization. We invited many participants from different fields in architecture, urban planning and program development to conduct user evaluations. These participants have different spatial and memory abilities. From the user's perspective, 3D environments created with VR compatibility can be experienced from an egocentric and stereoscopic perspective that surpasses the immersion of the 'classical' screen-based perception of 3D environments. The results of this research provide unique empirical evidence and contributions. According to the statistical results of the questionnaire, this platform does help solve the problem of 3D scene scale in the architectural field, and the integration of real-world information is also helpful for analysis and planning [10]. Not only game developers benefit from the possibilities provided by game engines. The ability to use geospatial data to shape virtual 3D environments opens a multitude of possibilities for geographic applications, such as construction planning, spatial hazard simulations or representation of historical places [10]. The integration of more detailed models is helpful for analysis and planning in the field of GIS, and the lack of visualization can also be improved. For developers, the development process of this platform has low complexity and high feasibility, and it has great potential in developing cross-domain integration platforms.