| Along with world economics' recovery, the port and harbor construction raises a new round of climax, to enhance the efficiency of the harbor operation as well as to reduce safety incident, the harbor's simulation and monitor become a popularity in research. Along with 3D technology's spring up, the harbor supervisory system gradually eliminate the primitive 2D technology to transfer uses the 3D technology, the new technology's use not only enabled the system to have a brand-new visual experience, but also simultaneously enhanced system's performance largely by using many optimizations.The system uses the OGRE 3D engine to develop, union with the input engine and the physical engine, dynamicly simulate and monitor the harbor container's hoisting process and theharbor's changes. In order to improve the more simulation effect, the system increased the Caelum sky system and the Hydrax sea system, simulates the real harbor peripheral environment,using the 3DSMAX to model RTG and QC , uses the way of object-oriented modelling to create RTG and QC's modles as well as to partition their functions.because the controlling data of the RTG and the QC's mechanism as well as dan is discrete,so this thesis proposed an algorithm named BVIR which make the motion more succession. Simultaneously to simulate to the pitching's axis linkage effect of the QC, the thesis proposed a reverse dynamics analysis method based on the OGRE IK, real-time simulation pitching's IK linkage.In order to raise system's exaggeration speed, the thesis proposed a LOD solution which based on the angle of view, large reduced the exaggeration real-time triangle surface number, thus enhanced system's performance.Experiments show that by using forecasts based on the speed of interpolation and IK inverse dynamics analysis as well as perspective-based LOD techniques in the Windows platform, greatly improving the simulation's performance, it have has some Significant reference to the development of three-dimensional simulation... |
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