欢迎来到天天文库
浏览记录
ID:50662597
大小:40.02 KB
页数:5页
时间:2020-03-13
《机械工程专业英语教程第三版lesson.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、机械五班王乘龙Lesson25ComputerGraphics(ReadingMaterial)Thetermcomputergraphicsreferstotheentirespectrumofdrawingwiththeaidofacomputer,fromstraightlinestocoloranimation.Animmenserangeofartisticcapabilitiesresidesundertheheadingofcomputergraphicsanddraftingisjustoneofthem.Computergraphicswasoriginal
2、lyassociatedwiththefieldofelectronics.Companiesdirectlyinvolvedinelectronicsdesignandmanufacturingwerethefirsttoexperimentandworkwithcomputergraphics.Astheytestedequipmentandsoftware,newdemandsarosethatrequiredchangesandadvancesinbothhardwareandsoftware.Equipmentandprogramsgotbetter,faster,
3、morepowerful,lessexpensive,colorful,andfuntooperate.Thepotentialforthisnewcomputerdevelopmentwasendless.Andasengineersanddrafterslearnedtoworkwiththenewtoolsinatechnicallydemandingatmosphere,artistswereusingthenewtoolsinanatmosphereofunlimitedstructure.Weseethestructureandfreedombroughtbyen
4、gineersandartiststocomputergraphicsaswewatchanimatedtelevisionnetwork.Complexmathematicalcalculationsarecombinedwiththecreativeeyeoftheartisttoachieveeffectsunseenjustafewyearsago.Theworldofcomputergraphicsisadynamicand,attimes,volatilefiled.Thedevelopmentsintechniqueandequipmenthaveadvance
5、drapidly,andtheareasofapplicationcontinuetospread.ThedraftingapplicationsofCADareunlimitedThespeed-of-lightcapabilitiesofthecomputerhaveshapedthegathering,processing,storage,andretrievalofinformationintoamajorindustry.Everydayourlivesaretouchedbytheeffectsofcomputers.Contrarytoscience-ficti
6、onworksofyearspast,computershavenotgrowntooccupythecoreoftheearth,buthaveshrunktomicroscopicproportions,andnowoccupytinyspacesinsideourmachinesandtools.Thetoolsofthedraftingtradehavealsofelttheelectronictouchofcomputers.Thesiliconchiphasfounditswayintodraftingtools.Theheartofmoderndraftingt
7、oolsisnowthecomputer.Thetraditionaltoolsofgraphics,suchastheT-square,compass,anddraftingmachines(Fig.25.1)arerapidlybecomingobsolete.Nowthedrafter,oroperator,useselectronichardwaretoconstructdrawings,notonpaper,butonwhatlookslikeatelevisionscreen.Thescre
此文档下载收益归作者所有