摘要
完全用W .T .Reeves提出的粒子系统方法无法满足仿真系统的实时性要求。为使航海仿真系统能进行实时模拟 ,提高对水波、浪花及船舶航迹流模拟的逼真程度 ,采用粒子系统建立航迹流模型 ,模拟航迹流的外轮廓 ,确定图象的α值 ,利用图象合成方法中粒子的透明度来实现不规则性航迹流的实时动态仿真。分析研究了粒子系统的航迹流模型及图象合成的主要方法 ,实时地模拟出船舶航迹流随船舶大小、速度变化 ,随时间消退。
It is difficult to meet the real-time needs of the simulation system by completely using the particle simulation system method put forward by W.T.Reeves. In order to conduct the real-time simulation in the navigation simulation system and to improve the fidelity of waves, foams and the ship's wakes,the combination of the particle system method and the image synthesis should be adopted to build the ship-wakes' models,to simulate the outline of the ship wakes, to determine gained α of the image and to employ the transparency of particles in image synthesis,all these help realize the real-time and dynamic simulation of the irregular wakes.The major methods of the ship-wakes' models based on the particle system and image synthesis was discussed.The methods obtained the real-time and dynamic results of the ship wakes, which changed with the ship's tonnage, speed and waves etc.
