CATIA照片级渲染.ppt

感谢下载,1,PhotoStudio,CATIATrainingFoils,Version5Release9June2002EDU-CAT-E-PHS-FF-V5R9,感谢下载,2,CoursePresentation,ObjectivesofthecourseInthiscourseyouwilllearnhowtocreateaphotorealisticimageTargetedaudienceNewCATIAV5usersPrerequisitesCATIAV5fundamentals,0.5day,感谢下载,3,IntroductiontoPhotoStudiop.6WorkbenchPresentationp.7Accessingtheworkbenchp.8Userinterfacep.9Generalprocessp.15QuickStartp.16Environmentmanagementp.18Creatingaboxenvironmentp.20Positioningtheenvironmentp21Dimensioningtheenvironmentp23Cameramanagementp.26Creatingacamerap.27Positioningacamerap.28Definingthecameralensp.30Lightsourcesmanagementp.31Creatingaspotlightp.33Positioningaspotlightp.34Definingthespotlightparametersp.36,TableofContents(1/3),感谢下载,4,Shootingmanagementp.39Creatingashootingp.41Definingtheframep.42Definingthequalityparametersp.44Computingtheimagep.45Texturesmanagementp.46Applyingtexturetotheenvironmentp.47Editingtheenvironmenttexturepropertiesp.49Applyingmaterialtoacomponentp.50Editingamaterialpropertiesp.52Stickersmanagementp.56Creatingastickerp.57Mappingastickerp.58Adjustingastickerp.61Definingastickertexturep.62Definingastickerlightingparametersp.63,TableofContents(2/3),感谢下载,5,Animation:Turntablemanagementp.64Creatingaturntablep.65DefiningtheTurntableparametersp.66Simulatingananimationp.67Computingananimationp.68Animation:Animatingsceneelementsp.70Creatingananimationp.71Addingelementstoananimationp.72Defininganimatedelementsparametersp.73Creatingandmodifyingshotsp.74Usingcatalogsp.75,TableofContents(3/3),感谢下载,6,IntroductiontoPhotoStudio,InthislessonyouwillseeV5PhotoStudiouserinterfaceandcomputeyourfirstbasicrealisticimagePhotoStudioWorkbenchPresentationAccessingtheworkbenchUserInterface:PhotoStudioGeneralPresentationUserInterface:PhotoStudiotoolsUserInterface:PhotoStudiotoolsUserSettingsGeneralProcessQuickStart:usingtheQuickRenderAdditionalInformation.,感谢下载,7,YouwilllearnaboutthePhotoStudioWorkbenchbyAccessingtheWorkbenchExploringtheUserInterfaceUnderstandingGeneralProcess,PhotoStudioWorkbenchPresentation,感谢下载,8,AccessingtheWorkbench,感谢下载,9,PhotoStudiotools.,Producttree,Standardtools,UserInterface:PhotoStudioGeneralPresentation,PhotoStudiofeatures,感谢下载,10,Sceneeditor:EnvironmentLightsourcesCamera,UserInterface:PhotoStudiotools,Animationtools,Rendering:ImageparametersComputation,Applymaterialandstickers,感谢下载,11,UserSettings(1/3),SelectPhotoStudio,SelectDisplay,Definethelightsourcedisplaymode,Definetheenvironmentdisplaymode,RestartCATIAaftermodifyingtheparameters,感谢下载,12,UserSettings(2/3),SelectPhotoStudio,SelectOutput,DefinetheQuickRenderparameters,RestartCATIAaftermodifyingtheparameters,Definethefilenamemanagement,感谢下载,13,UserSettings(3/3),SelectPhotoStudio,SelectSticker,RestartCATIAaftermodifyingtheparameters,Definethedefaultstickersimage,感谢下载,14,FromaProduct,Createanenvironment,Createacamera,Createlightsources,Createashooting,Launchthecomputation,GeneralProcess,Definethecomponentstexturesandstickers,感谢下载,15,QuickStart:usingtheQuickRender,InthisQuickStartyouwilldiscoverthruasimpledemonstration,thebaseofthecreationofaphotorealisticimageusingtheQuickRender.Theobjectiveisnottocontrolalltheparametersoftheimage,buttocreatequicklyarealisticimagefromthe3Dviewerdisplay.,感谢下载,16,Computationparameters:Defaultparametershavebeenpredefinedtohelptheusertogetquicklyarealisticimage.Ifanactiveenvironmenthasbeendefinedbytheuser,itwillbetakenintoaccountbytheQuickRender.Ifactivelightsexistinthesession,theywillbetakenintoaccount.Ifnolightisactive,adefaultlightpositionedatthecurrentviewpointwillbeused.Theimagedestinationfilecanbedefinedinthesettings.Aprecisesizeinpixelscanbedefinedfortheimageinthesettings.Applyingmaterial:Ifamaterialisappliedtoapartbeinginstancedintheproduct,alltheinstanceswillhavethesameattributes.Ex:thebuttonsYoucanalsoapplythematerialtotheinstanceitselfsothatthesameparthasdifferenteffectsintheimage,dependingonitsinstance.,AdditionalInformation.,感谢下载,17,EnvironmentManagement,InthislessonyouwilllearnhowtomanagethesceneenvironmentWhataboutenvironment?CreatingaboxenvironmentPositioningaboxenvironmentDimensioningaboxenvironmentAdditionalInformation.,感谢下载,18,Whataboutenvironment?,Whatisanenvironment?Tomakeyourimagemorerealistic,youneedtoplacetheobjectyouwanttorenderincontext.Theenvironmentisageometrywhichwillsurroundyourobjectandwillhelpyoutocreatethecontextbyapplyingtexturestoit.WhichenvironmentscanIuse?CATIAPhotoStudioprovides4differenttypesofenvironment:AboxAsphereAcylinderEnvironmentpredefinedusingRealvizsoftwareStitcherDependingthecontextyouwanttocreate,youwilluseoneshapeoranother.Forexample,asphericalenvironmentcanbeusedtorenderaplaneflyinginthesky.,感谢下载,19,AdefaultboxenvironmentiscreatedaroundtheproductFaceslocatedbetweentheviewpointandtheproductareautomaticallymadetransparentfortheeye,buttheywillbereflectedbyreflectiveobjects.,SelecttheCreateBoxEnvironmenticon,Creatingaboxenvironment,Anewfeatureisaddedinthetree,感谢下载,20,Modifythepositionoftheenvironmentusingthestandardtoolsofthecompass,Positionthecompassontheenvironment,Positioningaboxenvironment(1/2),Dynamically,感谢下载,21,SelectPropertiesintheenvironmentcontextualmenuordouble-clickit,SelectPosition,Positioningaboxenvironment(2/2),Usingprecisevalues,1,2,Definethecoordinatesoftheboxorigin,Definetheorientationoftheboxorigin,3,4,感谢下载,22,Selectanedgeoftheboxanddragit.Thiswillapplyascalingcenteredontheboxcenter.,Selectawalloftheboxanddragit.Thiswilltranslatethewall.,Dimensioningaboxenvironment(1/2),Dynamically,Globalscaling,Wallpositioning,感谢下载,23,SelectPropertiesintheenvironmentcontextualmenuordouble-clickit,SelectDimensions,Dimensioningaboxenvironment(2/2),Usingprecisevalues,1,2,Definethedimensionsofthebox,3,感谢下载,24,AdditionalInformation.,Severalenvironmentscanbedefinedinasession.Anenvironmentisactivatedusingthisoptionofitscontextualmenu,Youcangetthedefaultgeometryboundingboxusingthisoptionoftheenvironmentcontextualmenu,感谢下载,25,CameraManagement,InthislessonyouwilllearnhowtomanagecamerasCreatingacameraPositioningacameraDefiningthecameralens,感谢下载,26,Acameraisdefinedsothattheresultingimagecorrespondstothecurrentviewerviewpoint,SelecttheCreateCameraicon,Creatingacamera,Anewfeatureisaddedinthetree,Defineaviewpointusingthemousemanipulation,1,2,Cameradisplaywhenselected:,StandardCameradisplay:,感谢下载,27,Greenpointmovestheoriginpointinthescreenplane,Positioningacamera(1/2),Dynamically,Greensquaretranslatestheoriginpoint,Greensquaretranslatesthetargetpoint,Greenpointmovesthetargetpointinthescreenplane,感谢下载,28,SelectPropertiesintheenvironmentcontextualmenu,SelectPosition,Positioningacamera(2/2),Usingprecisevalues,1,2,Definethecoordinatesofthecameraorigin,Definethecoordinatesofthecameratarget,3,4,感谢下载,29,SelectPropertiesintheenvironmentcontextualmenu,SelectLens,Definingthecameralens,1,2,Definetheprojectiontype.Perspectiveprojectionprovidesmorerealisticresults.,Definethefocallength.Youshouldavoidsmallvaluesasitwilldeformtheobjectontheimage.Youshouldbettertakethecameraawayfromtheobject.,3,4,Thisviewercanbeusedtodefinethepositionofthecamerawiththemousemanipulationtools.Youcangetthesameviewinthe3Dviewerbydoubleclickingthecamerainthetreeorintheviewer.,感谢下载,30,LightSourcesManagement,InthislessonyouwilllearnhowtohandlelightsourcesWhataboutlightsources?CreatingaspotlightPositioningaspotlightDefiningaspotlightparametersDefiningasurfaciclightparametersAdditionalinformation,感谢下载,31,Whataboutlightsources?,Lightsourcesarenotjustusedtolightuptheenvironmentandmakeobjectvisible.Bygeneratingshadowsandilluminationvariationsontheobjectsurface,theygivetheimageitseffectofreliefandmakeitmorerealistic.WhichlightsourcescanIuseinPhotoStudio?“Ponctual”lightsources:ASpotlight:Itprojectsaconeoflightfromagivenpointtoagivendirection.Itistheonlytypeoflightsourcewhichconcentrateslightsraysonaspecificpartofthescene.Itisthusveryusefultohighlightdetails.APointlight:Itscatterslightinalldirectionsfromagivenpointlikeanelectriclamp.ADirectionallight:Thelightreachesthesceneintheformofparallelraysasifithadbeenemittedbyaplane.Itsimulateslightemittedbyaverydistantsourcesuchasthesun.Surfaciclightsources,creatingmorerealisticimagesbygeneratingsoftshadows:AdiskarealighttosimulatespotlightAspherearealighttosimulatelightbulbArectangulararealightthatcansimulateadistantlightsourceAcylinderarealighttosimulateneonsramp,感谢下载,32,SelecttheCreateSpotLighticon,Creatingaspotlight,Anewfeatureisaddedinthetree,Spotlightdisplaywhenselected:,StandardSpotlightdisplay:,Thespotlighteffectisvisualizedinthe3Dviewer,感谢下载,33,Greenpointmovestheoriginpointinthescreenplane,Chooseaviewpointusingthemousemanipulationtools,Positioningaspotlight(1/2),Dynamically,Greensquaretranslatestheoriginpoint,Greensquaretranslatesthetargetpoint,Greenpointmovesthetargetpointinthescreenplane,Computethespotlightpositionusingthisoption.Onlytheorigincoordinateswillbemodified.,感谢下载,34,SelectPropertiesintheenvironmentcontextualmenuordouble-clickit,SelectPosition,Positioningaspotlight(2/2),Usingprecisevalues,1,2,Definethecoordinatesofthespotorigin,DefinethecoordinatesofthespottargetAfterthetargetpoint,thespotiscompletelydark,3,4,感谢下载,35,Selectonesolidedgeofthespotlightconeanddragittodefinetheconeangle,Definingaspotlightparameter(1/2),Dynamically,Selectonesolidedgeofthespotlightextremityanddragittodefinetheconeend.Outsidethecone,nolightisdiffused.,感谢下载,36,SelectPropertiesintheenvironmentcontextualmenuordouble-clickit,SelectLighting,Definingaspotlightparameter(2/2),Usingprecisevalues,1,2,Definetheintensityandthecolorofthespotlight,Definetheangleofthespotlight,5,4,Definethelengthofthespotlightray.Thismovesthetargetpointinthespotdirection.,6,Definethelinearattenuation,7,Definetheangularattenuation,8,Activatetheshadowgenerationatrenderingtime,9,Definethetypeof“ponctual”lightsource,3,感谢下载,37,SelectPropertiesintheenvironmentcontextualmenuordouble-clickit,SelectArea,Definingasurfaciclightparameter,1,2,DefinetheUandVsamplesThehigherthevaluesare,thelessgrainythelightingwillbe.Computationtimeincreaseswiththesamplesvalues.,Definethelightsourcesurfacedimensions,5,4,Definethetypeofsurfaciclightsource,3,感谢下载,38,AdditionalInformation.,Computationresultwitha“punctual”spotlight,Computationresultwithasurfacicdiskarealight,感谢下载,39,ShootingManagement,InthislessonyouwilllearnhowtodefinealltheimageparametersWhataboutshooting?CreatingashootingDefiningtheframeAdditionalInformation.DefiningthequalityparametersComputingtheimage,感谢下载,40,Whataboutshooting?,CATIAPhotoStudioshootingdefinesalltheparametersthatwillbeusedforthecomputationofaspecificimagefromagivenproduct.Theparametersaresortedin4categories:TheFrameparameters:Youwilldefinethescene(whichenvironment,whichcamera,whichlightsources),theresultingimagesizeandlocation.TheQualityparameters:Youwilldefinetherenderingqualityparameters.Theseparameterswillhaveabiginfluenceonthecomputationtimerequiredforyourimage.Theindirectilluminationparameter:Youwillactivatetheuseofthefinalgatheringalgorithmanddefineitsparameters.TheAnimationparameters:Youwilldefinethenumberofimagesyouwanttousefortheanimation.Theseparameterswillbedetailedinthenextchapter.,感谢下载,41,SelecttheCreateshootingicon,Creatingashooting,Anewfeatureisaddedinthetree,感谢下载,42,DefinethecamerayouwanttouseforthecomputationYoucanusethecurrentviewpointof3Dviewer,Definingtheframe,Definetheenvironmentyouwanttoseeontheimage,Definethelightsourcesyouwanttobeusedintheimage,Definethedestinationandtheformatofthecomputationresult,DefinetheimagesizeTheimageiscomputedusingthe3Dviewerratio.Itisthendeformedtofitintothedefinedsize.Toavoidthisdeformation,definetheratiooftheimagesizeequaltothe3Dviewerration.,SelectFrame,感谢下载,43,AdditionalInformation.,Whatisraytracing?Raytracingisastandardimagerymode.ItisusedbyCATIAPhotoStudiotocreaterealisticimages.Howdoesitwork?Theimageisdividedinsquaresofpixels.Thesizeofthesquaresisdefinedbytheuser.Raytracingconsistsincalculatingthecolorateachcornerofeachsquareoftheimage,consideringalightrayfromthatcornerinthedirectioninwhichtheobjectsareviewed(cameraviewingdirection),followingthatrayuntilithitsanobject.Ifthatobjectisreflective,thereflectedrayistraceduntilithitsanotherobject,andsoon.Themaximumnumberofreflectionsforarayisoneofthequalityparameters.Iftheobjectistransparent,therayistracedasitcrossestheobject.Eachtimetheraymeetsanobject,thecharacteristicsoftheobjectarereadatthepointofincidence(color,reflectionmode,transparency,etc.)inordertodeducethecolorofthecornerofthepixelwheretheraycamefrom.,感谢下载,44,Maximumnumberofreflectionsandrefractionsforaray.Increasingthisparameterwillincreasethecomputationtime.,Definingthequalityparameters,Activatetheuseoftheobjectstexturesfortheimagecomputation,Definetherenderingaccuracyusingpredefinedsetsofvalues,Activatetheshadowcomputation,SelectQuality,Activatetheanti-aliasing,Defineacustomizeddivisionoftheimage,Defineacriteriaforautomaticsubdivisionofthesquares,Definethemaximumnumberofsubdivisions,感谢下载,45,AdditionalInformation.,Whatisfinalgathering?FinalGatheringhelpstocreateveryrealisticimagingbycreatingverysoftshadows.Thegeneralprincipalisthatthelightstrikingtheobjectisnotonlycomputedfromthelightsourcesbutalsofromtheotherelementscomposingthescene,asinreallife!Howdoesitwork?Lightraysaresentfromtheobjectspointsand,asthelightbouncesfromoneobjecttoanother,thelightenergyiscomputedonanysurfacessurroundingtheobject.Thisiswhatiscalledindirectillumination.Theuserhastodefinethenumberofraysthatwillbesentatrandomfromeachpixeltocalculatetheindirectilluminationfactor.Itwillbemultipliedbythematerialdiffuseparametercoefficient.Asaconsequence,noindirectilluminationwillbecomputedformaterialswithanulldiffusevalue.Toimproveperformances,theusercanuseaninterpolationalgorithmfromonepixeltoanotherinsteadofcomputingrealfinalgatheringforeachpoint.Maximumradiusparameterdefinesthemaximumdistancebetweenapointhavingarealfinalgatheringcomputationresultandaninterpolatedone.Minimumradiusdefinestheminimumdistancebetweentwopointshavingarealfinalgatheringcomputation.Increasingthemaximumradiusreducesthecomputationtime,butcancreateartefactsduetotheinterpolationprocess.,感谢下载,46,AdditionalInformation.,Computationresultwithoutactivatingthefinalgathering,Computationresultwithactivationofthefinalgathering,感谢下载,47,SelectIndirectIllumination,Definingtheindirectilluminationparameters,Activatetheuseofthefinalgatheringfortheimagecomputation,Definethenumberofraysemittedbyeachobjectpoint.,Definethemaximumradiusvalue.Ifsetto0,thisvalueisautomaticallycomputedaccordingtothescenesize.,Definetheminimumradiusvalue.Ifsetto0,thisvalueisautomaticallytunedto10%ofthemaximumradius.,感谢下载,48,Computingtheimage,SelecttheRenderShootingicon,Launchthecomputation,Usingthecontextualmenu,Usingthecomputationicon,SelecttheShootingtorenderinthetree,Launchthecomputation,感谢下载,49,TexturesManagement,InthislessonyouwilllearnhowtohandletexturesApplyingtexturestotheenvironmentEditingenvironmentstexturesApplyingmaterialtoacomponentEditingmaterials,感谢下载,50,Selectthewallinthetree,1,Selectatexturefile.,Applyingtexturestotheenvironment(1/2),2,Scaletheimagesothatitdoesfitontheentirewall,4,FlipthetextureimageintheUandVdirectionsifnecessary,2,Lockthetexturesizeduringthemodificationoftheenvironmentdimensions,3,感谢下载,51,Applyingtexturestotheenvironment(2/2),Selectthewallinthetree,SelecttheApplyMaterialicon,2,1,Selectamateriallibrary,3,Selectamaterial,4,感谢下载,52,Selectthewallinthetree,Editingenvironmentstextures,Defineascalefactorforthetextureinbothdirections.Theratiobetweenthetwovaluescanbemaintainedconstant.,Translatethetextureinbothdirections,Youcanrotatethetexture,感谢下载,53,Selectthecomponentinthetree,1,SelectApplymaterialicon,Applyingmaterialtoacomponent(1/2),2,Ifyouapplythematerialtothepart,thematerialwillbeappliedtoalltheinstancesofthispart(ex:thekeyboardbuttons)Youcanalsoapplythematerialtotheinstanceoftheparttocreatedifferenteffectsoneachinstance.,感谢下载,54,Selectafamilyofmaterial,3,Applyingmaterialtoacomponent(2/2),Selectamaterial,4,Thematerialappearsinthetree,attachedtothepart,感谢下载,55,Selectthematerialinthetree,1,Editingmaterials(1/5),2,Definetheambientcolorofthematerial,Definethediffusecolorofthematerial.Shinymaterialwillneedlowvalue.,SelectLighting,4,Definethespecularcolorofthematerial.Shinymaterialwillneedhighvalue.,SelectRendering,3,Definethedullnessofthematerial.Highvaluewillcreatelargespecularspotsonthepart.,感谢下载,56,Editingmaterials(2/5),Definethetransparencyofthematerial.Thisparametershouldbedefinedattheend.,Definethereflectivityofthematerial.,Previewoftheresult,Definetherefractionparameterofatransparentmaterial.,Definethetransparencyclorofthematerial.,感谢下载,57,Selectthematerialinthetree,1,Editingmaterials(3/5),2,Definethematerialsize.Ithelpstomakeglobalscalingofthetexture.ItiscombinedtotheScaleUandScaleVparameters.,Definethewaythetexturewillbeprojectedonthecomponent.5modesareavailable:PlanarSphericalCylindricalCubicalAdaptative,SelectRendering,3,Selectthetexturefile.,SelectTexture,4,Activateraytracedpreviewofthematerial,感谢下载,58,Editingmaterials(4/5),Scalethetextureinbothdirections,Translatethetextureinbothdirections,Definetheorientationofthetexture,Bydefault,thetextureisrepeateduntilitcoverstefullcomponent.Youcandecidetousethetextureonlyontimeinoneorbothdirections.,感谢下载,59,Editingmaterials(5/5),Modifythepositionofthetextureusingthecompass,Modifythetexturescaleusingthecorners,Selectthematerialinthetree,感谢下载,60,StickersManagement,InthislessonyouwilllearnhowtohandlestickersCreatingastickerAdjustingastickerDefiningastickerlightingparameters,感谢下载,61,Thestickerappearsintheproducttree,Creatingasticker(1/2),Selectthestickercreationicon,感谢下载,62,Creatingasticker(2/2),Selectthegeometrytouseforthestickermapping.Multi-selectionprocesisavailable,Definethetexturefile,Definethestickertexturescale,Definethestickertextureposition,感谢下载,63,Adjustingasticker,Positionthestickerusingthecompass,Selectthestickerinthetree,Definethestickerscaleusingthecorners,感谢下载,64,Selectthestickerinthetre