The Study Of Virtual Museum Roaming Based On Unity3D And Virtual Reality Technology

Virtual Reality is an intelligent and innovative visual experience and human-computer interaction model.It integrates the latest technologies in a variety of related disciplines and has gradually become the main tool for realizing human-computer interaction functions.It has been widely used in various fields.Among them,the construction and development of virtual museums has been widely concerned by the society and the country.Therefore,combined with relevant virtual reality technologies,this paper studies and designs a virtual museum roaming system with multi-sensory experience,and realizes a variety of interactive functions.Taking the virtual museum as the research object,this paper analyzes and studies the key technologies of 3D virtual scenes,and proposes new solutions to the three problems in the roaming system,which improves the user experience and improves the authenticity and timeliness of the virtual meseum.(1)An automatic path search and obstacle avoidance method is proposed for the problem that the user may “through” the obstacle during the virtual roaming.After the mesh path is searched by the automatic path finding function of the A* algorithm,the navigation grid(NavMesh)function can automatically search for and identify the obstacles in the path,ensuring that users can effectively and accurately avoid obstacles in the scene.(2)In the development process of the virtual museum roaming system,the traditional manual coding is time consuming and inaccurate when constructing large-scale virtual scenes in irregular areas.This paper selects the Catmull-Rom spline curve to determine the placement points of the collection models in the museum,and combines the EvenOdd algorithm to propose an improved method for quickly building large-scale virtual scenes.The traditional method and the improved method are respectively used to construct the large-scale virtual scenes,and the time of two scene constructions is compared.The improved methodcan effectively reduce the time cost of scene construction and improve the accuracy of scene construction.(3)Aiming at the problem that subtitles,voices and scenes in the virtual museum roaming scene can not always maintain real-time synchronization,a fixed-point trigger(FPT)method is proposed and designed.The edit path function of the iTweenPath plug-in is used to make the camera roams the path according to the specified route,and simultaneously triggers the subtitle and voice triggers in the path,which effectively improves the accuracy of subtitle,voice and scene matching.