On 3D simulation of moving objects in a digital earth system  

作　　者：WENG JingNong1,WU Lun2,HUANG Jian1,WANG Yang1,YANG Xue1 & HU Bin1 1 College of Software,Beihang University,Beijing 100191,China 2 Institute of Geographical Information System and Remote Sensing,Peking University,Beijing 100871,China 

出　　处：《Science China(Technological Sciences)》2008年第S2期123-132,共10页中国科学（技术科学英文版）

基　　金：Supported in part by the National High-Tech Research and Development Program of China ("863" Project) (Grant Nos.2007AA12Z216,2007AA120502);the National Natural Science Foundation of China (Grant Nos:40701134,40629001)

摘　　要："How do the rescue helicopters find out an optimized path to arrive at the site of a disaster as soon as possible?" or "How are the flight procedures over mountains and plateaus simulated?" and so on.In this paper a script language on spatial moving objects is presented by abstracting 3D spatial moving objects' behavior when implementing moving objects simulation in 3D digital Earth scene,which is based on a platform of digital China named "ChinaStar".The definition of this script language,its morphology and syntax,its compiling and mediate language generating,and the behavior and state control of spatial moving objects are discussed emphatically.In addition,the language's applications and implementation are also discussed.'How do the rescue helicopters find out an optimized path to arrive at the site of a disaster as soon as possible?' or 'How are the flight procedures over mountains and plateaus simulated?' and so on.In this paper a script language on spatial moving objects is presented by abstracting 3D spatial moving objects' behavior when implementing moving objects simulation in 3D digital Earth scene,which is based on a platform of digital China named 'ChinaStar'.The definition of this script language,its morphology and syntax,its compiling and mediate language generating,and the behavior and state control of spatial moving objects are discussed emphatically.In addition,the language's applications and implementation are also discussed.

关 键 词：DIGITAL EARTH ChinaStar MOVING OBJECT SCRIPT LANGUAGE 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]