【摘要】 利用可视化技术表现地壳结构,形象地模拟地震波在地壳内部的传播,对于增强地震事件解释具有重要意义。通过分析改进的CRUST5.1全球地壳结构数据特征,提出了基于长方体与四棱柱相结合的三维可视化建模方法。利用OpenGL建模技术,建立了全球地壳结构数据的可视化模型,在Delphi中基于OpenGL三维图形库实现了CRUST5.1全球地壳结构数据的三维可视化表达,结合OpenGL的人机交互功能完成了多视角观察以及基于地表剖切线的三维剖切功能。更多还原

【Abstract】 It is of significance to represent crustal structure and simulate the propagation of seismic wave in crust and mantle with visualization technique for interpreting seismic events efficiently. Based on analysis for improved CRUST5.1 global crustal structure data, the visualization modeling method of combining cuboids with quad-prism is presented, and the visualization model of global crustal structure data is also established with OpenGL modeling techniques. Furthermore, the three-dimension representing of CRUST5.1 crustal structure data, the viewing from different directions and the cutting alone an arbitrary plane have been implemented in Delphi with OpenGL.更多还原