The Construction Method Of 3D Dynamic Simulation System Of The Case

The three-dimensional dynamic simulation of the case is the reconstruction of the scene and process of the case with the help of three-dimensional simulation technology.Through the simulation of the scene of the case,it can help the public security organ to record the case information more comprehensively and intuitively,to improve the whole analysis ability of the investigators to the case process,to facilitate the introduction,publicity and storage of the case,which has important significance to the actual public security work.Starting from the actual demand of the reconstruction of public security cases,this paper combines MFC framework with OGRE three-dimensional engine,and constructs a threedimensional simulation system of the case,and realizes the three-dimensional simulation of case process by using C + + programming language.Its main work and innovation are as follows:1.The model of case simulation is analyzed and summed up,and the corresponding model is constructed by 3ds Max of three-dimensional modeling software,focusing on the binding of skeleton system in the character model.And the model is converted to form,so that the model can be loaded in the ogre three-dimensional engine.2.This paper studies the OGRE three-dimensional engine,and embeds OGRE into MFC framework by using C + + programming language,and completes the preliminary construction of the case-three-dimensional dynamic simulation system platform.The main interface of the system is divided,and the resource tree of the Model library is established in the interface window to realize the interaction between the resource tree and the OGRE three-dimensional engine interface.And the model is picked up in the OGRE interface in order to realize the control operation of the model.3.In the research,this paper analyzes the animation type and spatial relation supported by OGRE three-dimensional engine,describes the method of realization of scene node animation,and studies the interpolation method of scene node.Then the function module of the scene node animation interactive operation is set up in the system.The specific method is to add a time slider dialog box in the system,set the function buttons for interactive operation,realize the key frame images at different time points,and finally complete the node animation through interpolation calculation.4.With the help of the principle of human skeleton movement,four kinds of skeleton animation were designed in 3ds Max.The animation is fused,and the skeleton animation is exported and named by plug-ins.Add the character animation function dialog box in the system,set the character action selection button,input skeleton animation start frame and end frame,select and realize the corresponding character skeleton animation.Finally,the system is demonstrated by simulating two cases,and each function module of the system is tested.