中国水能及电气化
中國水能及電氣化
중국수능급전기화
CHINA HYDROPOWER & ELECTRIFICATION
2013年
5期
61-63
,共3页
GIS%水体建模%三维
GIS%水體建模%三維
GIS%수체건모%삼유
GIS%water body modeling%three-dimensional
根据应用需求的不同,水体的三维建模也有不同的要求.当单独作为景观需求时,水体只需抽象成一个面覆盖在地表上;当把水层因素的变化作为需求时,水体就必须抽象成一个占据三维空间的体;当把风力的变化作为需求时,水体就必须抽象成一个上表面起伏变化的体.每一种需求在建模时都有自己的优点和缺点、易处和难处.在实际应用用中,有时不只是一种需求,而是多种需求的组合.水体本身没有固定的形状,随地表高低起伏而变化,从而更加大了水体建模的难度.本文主要研究了每一种需求的解决方案,以为将来的应用需求提供指导性的建议.
根據應用需求的不同,水體的三維建模也有不同的要求.噹單獨作為景觀需求時,水體隻需抽象成一箇麵覆蓋在地錶上;噹把水層因素的變化作為需求時,水體就必鬚抽象成一箇佔據三維空間的體;噹把風力的變化作為需求時,水體就必鬚抽象成一箇上錶麵起伏變化的體.每一種需求在建模時都有自己的優點和缺點、易處和難處.在實際應用用中,有時不隻是一種需求,而是多種需求的組閤.水體本身沒有固定的形狀,隨地錶高低起伏而變化,從而更加大瞭水體建模的難度.本文主要研究瞭每一種需求的解決方案,以為將來的應用需求提供指導性的建議.
근거응용수구적불동,수체적삼유건모야유불동적요구.당단독작위경관수구시,수체지수추상성일개면복개재지표상;당파수층인소적변화작위수구시,수체취필수추상성일개점거삼유공간적체;당파풍력적변화작위수구시,수체취필수추상성일개상표면기복변화적체.매일충수구재건모시도유자기적우점화결점、역처화난처.재실제응용용중,유시불지시일충수구,이시다충수구적조합.수체본신몰유고정적형상,수지표고저기복이변화,종이경가대료수체건모적난도.본문주요연구료매일충수구적해결방안,이위장래적응용수구제공지도성적건의.
There are different requirements on three-dimensional modeling of the water bodies depending on different application requirements .When it is only used as landscape , the water body just should be abstracted as a surface covering on the earth surface .When the change of the water layer factors is treated as demand , the water body must be abstracted into a body occupying three-dimensional space .When the wind power change is treated as a demand , the water body must be abstracted into a body with surface of the ups and downs .Each demand has its own advantages and disadvantages as well as simplicity and difficulties during modeling .It is sometimes not just a demand , but the combination of a variety of needs in practical applications .Water body itself has no fixed shape and is changed with the ups and downs of earth surface , thus increasing water modeling difficulty .This paper mainly studies the solution of each demand , thereby providing guidance recommendations for future application needs .