Interactive road simulation method and platform based on BIM+VR technology

The invention provides an interactive road simulation method and platform based on the BIM+VR technology. The method comprises the steps: firstly carrying out the reconstruction of a three-dimensionalmodel, importing a CAD road drawing into a UE4 engine, and carrying out the reconstruction of the three-dimensional model of three-dimensional polygonal grid models in different formats in the CAD road drawing through a UV coordinate system; fitting the reconstructed three-dimensional model with a satellite map; carrying out scene rendering according to purposes and purposes in the road scene toform different scene models, calculating a scene light source in real time by utilizing global illumination, and carrying out light source adjustment; and finally, experiencing the scene in an interactive form through VR equipment, and carrying out improvement and adjustment. Scene light source interactive adjustment is calculated in real time through real-time global illumination, and the sense of reality of the scene is