Based On Vrml And Java Interactive Technology

Virtual Reality is a today study hot-spot and it developed quickly since 1990' s .The truthfulness, interaction is one of keys in Virtual Reality.First, this paper analyzes the VRML' s ability of descriping 3Dscenes and the relevant nodes' s algorithm .Then discusses how to usestrong ability of writing program in Java and the interface technologywith VRML to control VRML action .Makes use of VRML and Java languageto build a roam system of virtual community, studies some technologieswhich are based on VRML, these technologies are setting up the model,interaction and roam, and then uses the interface technology of Java andVRML to realize free roam, fixed roam in virtual 3D scenes. Accordingto the virtual 3D scenes which are built in civil and international, allof them only realize the simple navigation function, this paper putsforward a thought, the thought is leading the optimal route algorithminto 3D virtual scenes, which make the 2D and 3D plane combined togetherand realize the roam of optimal route in 3D virtual scenes. The resultshows that the method can improve the system' s intelligence and enhancethe interaction between 3D virtual scenes and users, and it alsoillustrates that this thought has certain theory base and higher valueat roam in building design, tourism, digital city and so on. Meanwhile,this thought is a bold trying and beneficial supplement in the 3Dscenes' s virtual guided navigation.Moreover, this paper also studies how to make the VRML connected with the data base to expand the roam system of virtual community' s function.