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1、计算机与信息学院本科毕业设计（论文）外文资料翻译—原文部分FundamentalsofHumanAnimation(FromPeterRatner.3DHumanModelingandAnimation[M].America:Wiley,2003:243~249)Ifyouarereadingthispart,thenyouhavemostlikelyfinishedbuildingyourhumancharacter,createdtexturesforit,setupitsskeleton,madem
2、orphtargetsforfacialexpressions,andarrangedlightsaroundthemodel.Youhavethenarrivedatperhapsthemostexcitingpartof3-Ddesign,whichisanimatingacharacter.Uptonowtheworkhasbeensomewhatcreative,sometimestedious,andoftendifficult.Itisverygratifyingwhenallyourprev
3、iouseffortsstarttopayoffasyouenlivenyourcharacter.Whenanimating,thereisacreativeflowthatincreasesgraduallyovertime.Youarenowatthephasewhereyoubecomeboththeactorandthedirectorofamovieorplay.Althoughanimationappearstobeamorespontaneousact,itisneverthelessju
4、staschallenging,ifnotmoreso,thanallthepreviousstepsthatleduptoit.Youranimationswilllookpitifulifyoudonotunderstandsomebasicfundamentalsandprinciples.Thefollowingpointersaremeanttogiveyousomedirection.Feelfreetoexperimentwiththem.Bendandbreaktheruleswhenev
5、eryouthinkitwillimprovetheanimation.SOMEANIMATIONPOINTERS1.Tryisolatingparts.Sometimesthisisreferredtoasanimatinginstages.Ratherthantryingtomoveeverypartofabodyatthesametime,concentrateonspecificareas.Onlyonesectionofthebodyismovedforthedurationoftheanima
6、tion.Thenreturningtothebeginningofthetimeline,anothersectionisanimated.Bysuccessivelyreturningtothebeginningandanimatingadifferentparteachtime,theentireprocessislessconfusing.2.Putinsomelagtime.Differentpartsofthebodyshouldnotstartandstopatthesametime.Whe
7、nanarmswings,thelowerarmshouldfollowafewframesafterthat.Thehandswingsafterthelowerarm.Itislikeachainreactionthatworksitswaythroughtheentirelengthofthelimb.3.Nothingevercomestoatotalstop.Inlife,onlymachinesappeartocometoadeadstop.Muscles,tendons,force,andg
8、ravityallaffectthemovementofahuman.Youcanprovethistoyourself.Trypunchingtheairwithafullextension.Noticethatyourfisthasabounceattheend.Ifapartcomestoastopsuchasamotionhold,keyframeitonceandthenagainafterthreetoeighto
