Design And Implement Of The Interactive Virtual Scene Design System Based On VRML

With the rapid development of information technology, people are no longer only satisfied with symbols, words, stationary images, but also the interactive characteristics of two-dimensional image while using the internet; meanwhile they hope to change the Internet into a multi-dimensional space. Observe the results of information processing from outside, with the help of visual sense, hearing, touch, smell, and body, gesture and password, make them in the environment of information processing, thus have experience to be personally on the scene. The technology of virtual reality will play an important role in the multi-dimensional space. The technology of virtual reality can become a kind of virtual environment, and make consumer get into the environment by means of several equipment of driver sensor. Thus make it possible to realize the natural interaction and to respond to the conduct between the consumer and the virtual environment, and the virtual environment can be controlled by the consumer. Nowadays, the representative technology is VRML97 that is widely used to realize the system of virtual reality.VRML is short for Virtual Reality Modeling Language. It is a new technology which is related to the fields of multimedia communication, interactive network, and virtual reality. The basic goal is to set up an interactive multi-dimensional multimedia on the Internet. It is a standard to describe the scene of virtual environment. The basic characteristics of VRML include distribution, interaction, and three-dimension, multimedia and so on. It is called"the second period of WEB".VRML is a standard three-dimensional documental form on the Internet. Because of the complication of VRML's document, to most amateur consumers, it is difficult to write a document to make up the scene of VRML. Meanwhile, the three-dimensional image is more intuitionists,figurative, overall than the two-dimension or stationary image, and it is good inflecting the reality. This article is based on the designing demand of the virtual scene, which designs and realizes the designing system of three-dimensional scene based on VRML. Every consumer who isn't known about the form of VRML can grasp the system. By clicking the mouse to set up a scene soon, and make up a VRML document that can browse by VRML plug. It is totally put aside the process of VRML. Consumers can show up the scene of reality again by the system that is designed in the article.The main point of the article is to study the technology of building the three-dimensional scene. The goal of system is to offer the consumers a platform which is non-compiled interactive three-dimensional scene. The scene creator interactively creates and controls the object of scene in VRML by controlling the graph of scene which you want, and the edition function of scene is completed by the backstage process. The system realizes to pick up and pull up the object in VRML plug, so that the consumers can convenience build the visual scene. In addition, the system not only realizes dynamic building and controlling the scene in VRML, which is the lasting of scene document, but also realizes to dynamic add the light, vision, word information to the scene. It is realized that the system is fit for the designing of the three-dimensional virtual scene system. The article propose a set of a proposal of solving the online virtual scene, with the study of the computer graphics, the virtual reality technology, the interactive technology between the people and the computers, and in relation the designing ways of supplementary design in computer. According to the network application systems development process, design and realize the system of virtual scene. The main points are:1,To analyze and study the technology of virtual reality, virtual design filed and the relation to the technology of VRML.2,To propose a thought of virtual scene designing system on theInternet based on the some research of technology. The interactive virtual scene design system based on VRML is mainly used as basic original form that comes from the original form of VRML and model of 3DS MAX, which can build a virtual scene on the Internet. The system uses the pattern of B/S. The system is made up of two parts. One is the designing model and designing scene, which design the scene by some original forms offered, and correct the model by itself and add it to the scene. The other is scene edition, which make the model design by removing, copying, revolving, and then keep the designing results.3,The implement of the interactive virtual scene design system based on VRML. Combining VRML and JavaScript, realize the real-time interaction function between the virtual scene and model, such as the function of menu, the remove, rotate, scale and copy of object and other basic edit function. Full use of the sensor point of VRML, such as CylinderSensor and PlaneSensor points and the Browser, such as CreateVrmlFromURL, addRoute, deleteRoute, createVrmlFromString, loadURLRealizing and so on. the compound of three-dimensional virtual model, three-dimensional scene, and two-dimensional information. The contribution of model is made up of two ways. The designing scene uses the simple model of VRML. The complex model uses the visual developing tool, which uses the 3DMAX50. It has a good effect in developing process, and fast the developing speed and reduce the developing period. After completing the basic model in 3DMAX, the system becomes the *. wrl file. And correct further in VrmlPad2.0, make it better in the skim speed and skim effect. The realize of the scene keeping function is to print in the Console in VRML, such as the information of position, the information of direction, color and material, and then keep it into .wrl file.4,The system makes the VRML and database in connection by JSP. Finally, give examples of virtual exhibition and virtual room.By these a series of working, we get the following results. It proposes aset of an argument of solving by using the technology of VRML, relating to the graphics of computer and interaction between person and computer theory. To study the interactive process of designing deeply, and to study the windows further, to intensify the function of interaction. Realize the online virtual scene designing system, realizing the addition of the object and the switch of the position, the switch of materials, and to complete the reality of three-dimensional scene. By using the collision technology and 3D graphics processing technology enhance the browsing and displaying of immersion; and realize the whole designing flow, from two-dimension to three-dimension scene, designing of the three-dimensional scene and model, and the keeping function of scene. To realize the connection to the database, so as to the system is extensible.The system has a lot of points to improve further. It only realizes the simple connection in database, without the query of database, and the model upload function. There is some gap in the interactive windows and the function of interaction. In the future, prepared to use the VRML and VC++ interface for programming, to realize the powerful, make the system more perfect.