虛擬現(xiàn)實(shí)英文虛擬現(xiàn)實(shí)英文1（優(yōu)選）虛擬現(xiàn)實(shí)英文版（優(yōu)選）虛擬現(xiàn)實(shí)英文版ThemaincontentIOverviewIIVRhardwareandinteractiondevicesIIIVirtualRealityandGISnetworkIVVirtualrealitytechnologydevelopsVvirtualenvironmentmodelingandtoolsVIdevelopmentexample:VirtualCampusXianlinCampusofNanjingNormalUniversityVIIProspectsandProblemsAppendix:References

ThemaincontentIOverviIOutline

Virtualrealityisthedevelopmentofcomputertechnologyishighlycrystallineandisreflectedinthevariousfieldsintheapplicationprocess,includingnotonlygraphics,imageprocessing,patternrecognition,networktechnology,parallelprocessingtechnology,artificialintelligenceandotherhighperformancecomputingtechnology,butalsoinvolvesmathematics,physics,communications,andevenrelatedtometeorology,geography,aesthetics,psychologyandsociology.IOutline

VirtualrealityiIIWhatisvirtualreality

Virtualrealityorvirtualenvironmentisgeneratedbyacomputerhavingspotfeelingenvironment,itisanewinteractivesystem.Virtualrealitytechnologyisessentiallyahighlyrealisticsimulationofhumanvisioninreallife.Hearing.Actionandotheractsofinteractivetechnology.Traditionalinformationprocessingenvironmenthasbeena"peopleadaptcomputer,"whiletoday'sgoalorideaistograduallymake"computeradaptation"andpeoplecalledfortheadoptionofsight,hearing,touch,smell,andbody,gestureorpassword,toparticipateintheinformationenvironmentaltreatedtotherebyobtainanimmersiveexperience.Thisinformationprocessingsystemisnolongerbasedontheonedimensionaldigitalspace,butonamultidimensionalinformationspace.Virtualrealitytechnologyisakeytechnologytosupportthismultidimensionalinformationspace.IIWhatisvirtualreality

VirIIIVirtualRealityFeaturs

ImmersionInteractionImaginationIIIVirtualRealityFeaturs

ImImmersionvAnartificialcomputergeneratedvirtualenvironment,thisvirtualenvironmentisathreedimensionaldigitalmodelsconstructedbycomputergraphics,programmedintoacomputertoproducerealistic"virtualenvironment",allowinguserstogenerateanimmersivevirtualenvironmentvisuallythefeeling,whichisasenseofvirtualrealitytechnologyimmersion(Immersion)orspotasenseofparticipationImmersionvAnartificialcompuInteractionModelandthetraditionalthreedimensionalanimationandvirtualrealityareusuallygeneratedbyCADsystemsisnotthesame,itisnotastaticworld,butanopen,interactive,virtualrealityenvironmentcaninfluencebycontrollingandmonitoringdevicesorusersEffects,whichisthesecondfeatureVR,eraction(Interaction).InteractionModelandthetradiImaginationVirtualrealityisnotjustademonstrationofmedia,butalsoadesigntool.Itreflectsthevisualformdesignerideas,suchaswhenthefrontcoverofamodernbuilding,thefirstthingyoudoisforthebuilding'sstructure,beautifulideatododetailed,inordertomakequantitative,youneedtomanydesigndrawings,ofcourse,thesedrawingsonlyinsidersunderstand,virtualrealitycanputthisideaintoavisiblevirtualobjectsandenvironments,sothatinthepastonlywithtraditionalsandtabledesignpatternsupgradetodigitalperviewincomethatisperfection,greatlyimprovingthequalityandefficiencyofthedesignandplanning.ThisisthethirdcategoryofVRhasfeaturesthatimagination(Imagination).ImaginationVirtualrealityisIIIIVirtualRealityclassificaion

DesktopVirtualRealityImmersivevirtualrealityAugmentedRealityofVirtualRealityDistributedVirtualRealityIIIIVirtualRealityclassificNetworkVirtualGISarchitectureX3DfullnameisExtensible3D(X3DearlynameiscalledVRMLNG,VRMLNextGeneration).VirtualRealityv

Datastoragedevicerequirements,animationimagestoragerequiresagreaterstoragecapacityofthedeviceVirtualGeographicEnvironments,isanavatarbasedmultiuserdistributedintelligentthreedimensionalvirtualenvironment,adigitalgeospatialphenomenaandlawsofaparticulargeographicalenvironmentwithmultichannelawareexpression,calculationandsimulation,integratedmanagementoftheEarthcanbeusedformultidimensionalinformationandmultimediaintegratedpublishing,interactive/innovativeblendofstyleearthscienceresearch,andotherdistributedcollaborativeplanning,designanddecisionmaking.IIVRhardwareandinteractiondevicesHighperformancecomputersystemprocessingtechnologyincludesdataconversionanddatapreprocessingtechnologies;realtime,realisticgraphicsimagegenerationanddisplaytechnology;multidimensionalinformationdatafusion,datacompression,andgeneratethedatabase;multiplesoundsynthesisandsoundspacetechnology;includingcommandrecognition,voicerecognition,anddetectgesturesandfacialexpressionsofinformation,includingapatternrecognition;distributedandparallelcomputing,andhighspeed,largescaleremotenetworktechnology.Virtualcampusisintheenvironmentofcomputer,virtualreproductionofthenewcampuslandscape,throughthehelmet,3Ddevicessuchasamouse,peoplecanenterthevirtualcampusroaming,thebeautyofthetasteofthecampus.v

Imagedisplayequipment,sothattheuserhasasenseofimmersioncanbeimmersivefeelitselfisavirtualgeographicenvironmentspart.Adjustthesky,cloudsandotherenvironmentalparameters;canalsoaddthecarandothermobileobjectsinthescene.ImmersivevirtualrealityOtheraspectsTheuseofXML,wecanachievemanyGIStaskshavemoreclearNetworkVirtualGISclientIIVThedifferencebetweenvirtualrealityandthreedimensionalanimation

VirtualRealityThree-dimensionalanimation

Acombinationofdigitalvirtualenvironmentmodelbasedonrealdatafromstrictcompliancewiththestandardsandrequirementsoftheprojectdesign,ascientificsimulationsystems.?Manipulatorexperiencethevirtualthree-dimensionalspace,immersive.Ofscenespainteddirectlybytheanimatorsmadeaccordingtothematerialorimaginedtogether,andrealenvironmentsanddatahaveabiggap,belongingtodemonstrateclassworksofart.?Presupposedobservationpathcannotbechanged.

Theoperatorcanfeelthemovementtobringreal-timescenechanges,walkingscene,andpersonallyarrangedthescene,withtwo-wayinteractivefeatures.

Onlyone-waypresentationsasmoviescenechange,makingthescreenrequirespriorgeneration,time-consuming,laboriousandcostly.NetworkVirtualGISarchitectu

VirtualRealityThree-dimensionalanimationSupportsstereoscopicdisplayand3Dstereo,three-dimensionalreality.DoesnotsupportNotimelimit,canshowatrueanddetailed,andyoucanexportfilesinvirtualrealityanimatedvideobasedonthesamedatacanbeusedfortheproductionofmulti-modebodyandpublicity,cost-effective.Animationbythetimelimit,cannotbedetaileddisplay,lowprice.

Inreal-timethree-dimensionalenvironment,adjustmentsupportprograms,assessment,management,informationinquiryandotherfunctions,suitableforlargercomplexprojectplanning,design,bidding,approval,managementandotherneeds,butalsohasamorerealisticandintuitivemultimediapresentationcapabilities.Onlysuitableforsimplepresentationcapabilities.SupportsstereoscopIVVirtualrealitytechnologyused

intherealworld

Manygamemakers,inordertomakethegamemorerealisticcharactermovements,oftenwillusethemotioncapturesystem.Virtualrealitytechnologyuseinthefilm.

Example:MatrixDisplayofgoods(suchashome,appliances,etc.)IVVirtualrealitytechnologyIIVRhardwareandinteractiondevices

Atypicalsystemconsistsofvirtualrealityspacedataacquisitionsystem,thehumandatacapturesystems,threedimensionaldisplaydevice,aswellasthreedimensionalcontrolequipmentandacomputersystem.Spatialdataacquisitionsystem,humandatacapturesysteminavirtualenvironmenttoestablishspacemodel;3Ddisplaydevice,athreedimensionalcontrolequipmentbelongtothesamethreedimensionalinteractiveequipment,designandmanufactureof3Dinteractivedevicesuperiorperformanceisthekeytovirtualrealitytechnology.SpatialDataAcquisitionSystemHumandatacapturesystemComputerSystems

SupergraphicsworkstationsThree-dimensionalcontrolequipment3DdisplaydeviceCollectionAlternatelyIIVRhardwareandinteractiSpatialDataAcquisitionSystemSpatialdataacquisitionsystemtoobtaintimelyspatialdatathroughsatelliteremotesensing,aerialremotesensingandglobalpositioningsystems,andestablishinganaccurateandreliablevirtualrealityspaceenvironment.Remotesensingisanadvantageoftheinherentcharacteristicsofelectromagneticradiationreflectedfromanobjectandthroughimplementationofelectromagneticwaves,therearetechnicalenvironmentalconditionsandobjectrecognitionobject.SpatialDataAcquisitionSysteHumandatacapturesystemHumandatacapturedevicethatcanrecordthebodyofpracticaldataandactions,includingthebodymovements,facialexpressions,physiologicalindex,smellandvoice.HumandatacapturesystemHumanpsychologyandsociology.TheuseofXML,wecanachievemanyGIStasksransport,tourismVirtualRealityHumandatacapturesystem1;GISsoftwareArcinfo7.(2)metadatabaseconstructioninclude:aerialscaledenominator;GaoHang;aerialcamerafocallength;aerialunits;dateofaerialphotography;aerial;numberofaerialimages;GaussKrugerprojectionwithanumber;zones;centralmeridianandstandardparallels.wrl

#VRMLV2.Tothisend,weneedmoreresearchonhowtoimprovecommunicationmodesbetweenpeopleandenhancevariousexchangesavatarinvirtualgeographicenvironmentsbetween.Seeingandhearingotherinformationsourcesmaybecoworkerstocommunicatewhattherealattitudesandemotions,isanimportantpartofcommunicationbetweencoworkersinvirtualgeographicenvironments,andanalysisofgeographicdatainplanninganddecisionmakingalsoplaysaveryimportanteffect.RoadTools（StandardroadgenerationtoolVIIProspectsandProblemsSpatialDataAcquisitionSystemFlightOpenformatandAPIsJavanetworkandplatformindependenceaswellasitsstrongsupportforthethreedimensionalgraphics,soheoccupiedanimportantpositioninthefuturedevelopmentofthemarketinthethreedimensional.v

Simulationrealtimeinteractionv

Theexpressionoffeelings,includingthehumanhearing,thevisual,thetactile,thetasteandthesmellcomputerExpress3DdisplaydeviceHardwareandsoftwareenvironmentInteractive3DEquipmentCommon3Ddisplaydeviceandstereoscopichelmetmounteddisplayglasses.Helmetmounteddisplaywiththreedimensionaldrawingtechniquestoproducetwospacedapartperspective,anddirectlydisplayedtotheusercorrespondstotheleftandtherighteyeontwomonitors.Thenewhelmetmounteddisplaysareaccompaniedbymagneticpositionsensor,canmeasurethedirectionoftheuser'slineofsight,sothescenecanchangeastheuser'slineofsightandmaketheappropriatechanges.psychologyandsociology.Inter

Interactive3D

EquipmentAcommonfeatureofthethreedimensionalspacecontroldeviceiscapableofcontrollingatleastsixdegreesoffreedom(DegreeofFreedom),correspondingtothethreedimensionalobjectdescribingthewidth,height,depth,pitch(pitch)angle,rotation(yaw)angleandyaw(roll)angle.Commonthreedimensionalcontroldevicehasdatagloves,trackball,threedimensionalprobe,threedimensionalandthreedimensionalmousecontrolleverandthelike.Theemergenceofthedataglove,virtualrealitysystemprovidesanewinteractivetoolthatcanprovideuserswithaveryrealandnaturalthreedimensionalinteractivetools.Interactive3D

EquipmentHighperformancecomputersystemsHighperformancecomputersystemprocessingtechnologyincludesdataconversionanddatapreprocessingtechnologies;realtime,realisticgraphicsimagegenerationanddisplaytechnology;multidimensionalinformationdatafusion,datacompression,andgeneratethedatabase;multiplesoundsynthesisandsoundspacetechnology;includingcommandrecognition,voicerecognition,anddetectgesturesandfacialexpressionsofinformation,includingapatternrecognition;distributedandparallelcomputing,andhighspeed,largescaleremotenetworktechnology.HighperformancecomputersysteIIIVirtualrealityandnetworks,GIS

Virtualrealitytechnologynowcombinesthelatestresearchresultsinvariousdisciplines,includingtheresultsofcomputerscience,communicationnetworktechnology,geographicinformationsystems,remotesensingscienceandotherareas.Themaincontentsofthissection:VirtualGISNetworkVirtualGISDistributedGISGeographicalsynergyIIIVirtualrealityandnetIIIIVirtualGIS

Developmentofcomputerscienceandhumancomputerinterfacetechnologyingraphics,especiallythepromotionofvirtualrealitytechnologyforGISprovidesanewanalysisgeosciencedataandtechnologyplatformtoexploreissues,andpromotetheGIStechnologywithvirtualrealitytechnologyandvisualizationfusiontechnology,expandingthemultidimensionalGIS,threedimensionalGISinparticularconnotationstudyprovidesnewspatialdataanalysismodelsandnewGISapplicationmode.CurrentinternationalcallthisvirtualrealitytechnologyandscientificvisualizationtechnologydesignedmultidimensionalGISsystemcalledVirtualGISsystem"VirtualGIS(VGIS)".IIIIVirtualGIS

DevelopmIIIIINetworkVirtualGISpresentationCombinedwiththecurrentdirectionofthevirtualnetworkisaGISdevelopment.Combinedwithnetworktechnology,networkvirtualGISnotonlyforpeopletoanalyzespatialdataandspatialproblemsolvingnetworkprovidedbythetechnologyplatform,through"immersive"virtualrealitymodelforpeopletointeractthroughvirtualgeospatialoffersthepossibility,therebyforthestudyofvirtualgeographicalenvironmentprovidesanidealplatform.IIIIINetworkVirtualGISpNetworkVirtualGISarchitecture1.AGISisavirtualnetworkbasedGIS,virtualrealitysystemwiththeGISClientlinkingprovidesasimplespatialanalysisortoanalyzetheresultsofGISintovirtualrealitysystemtosupportvirtualrealitysystemdataformat,forvirtualrealitysystemstoobserve;2.AnothervirtualGISisbasedonadistributedvirtualrealitysystem,extendtheabilitytosupportspatialdatatypesinavirtualrealitysystem,providingsimplespatialanalysis.NetworkVirtualGISarchitectu

TheoverallstructureofWEBvirtualGIS

TheoverallstructureofWEBFlightOpenformatandAPIsImmersivevirtualrealityv

Hardware(YoucanuseXMLtoshowVRML97features)goals.Tothisend,weneedmoreresearchonhowtoimprovecommunicationmodesbetweenpeopleandenhancevariousexchangesavatarinvirtualgeographicenvironmentsbetween.Inthevirtualgeographicenvironments,bothuseravatarcancommunicatefacetofaceinthesamevirtuallocation.InordertoimprovetheinteractivityoftheVRsystem,realisticandimmersionsenseinnewsensingandperceptionmechanism,geometricandphysicalmodelingmethod,highperformancecomputing,especiallyinhighspeedimageprocessing,andartificialintelligence,psychology,sociology,andotheraspectshavemanychallengingproblemstobesolved.Manygamemakers,inordertomakethegamemorerealisticcharactermovements,oftenwillusethemotioncapturesystem.wrl

#VRMLV2.XMLfullnameinEnglishisExtensibleMarkupLanguage,theChinesetranslationforextensiblemarkuplanguage.1,IMAGIS,VRsoftwareMultiGen,Vega;imageprocessingsoftwarePhotoshop5.TheuseofXML,wecanachievemanyGIStasksFutureoutlookDistributedGISTraditionalinformationprocessingenvironmenthasbeena"peopleadaptcomputer,"whiletoday'sgoalorideaistograduallymake"computeradaptation"andpeoplecalledfortheadoptionofsight,hearing,touch,smell,andbody,gestureorpassword,toparticipateintheinformationenvironmentaltreatedtotherebyobtainanimmersiveexperience.object.TheuseofXML,wecanachievemanyGIStasksCORBAisoneofthemainstreamcomputingplatformfordistributedobjects,CORBAplatformtobecomewidelyacceptedbythecomputerindustry,andisfullyopentothedistributednetworkplatform.object.PhysicallyBasedModelingIIIIIIGISsystemarchitecture'sroleinthenetworkvirtual3.3CORBACORBAisoneofthemainstreamcomputingplatformfordistributedobjects,CORBAplatformtobecomewidelyacceptedbythecomputerindustry,andisfullyopentothedistributednetworkplatform.CORBAisadistributedobjectbaseddesignhavingscalability,security,loadbalancingandfaulttolerance,realtime,specialperformancerequirementsforthedesignofdistributedsystemsprovidearationalplatform.CORBAbasednetworkplatformtodesignvirtualGIS,byreusingtheCORBAnetworkstructureandbasicnetworkservicesgreatlysimplifyvirtualdifficultyGISnetworkarchitecturedesignbasedonvirtualGISCORBAallowsthenetworktousemoreflexiblenetworkarchitecture.FlightOpenformatandAPIsIIICORBAbasednamingservicenetworkVGISsystemimageconceptmap

NetworkVirtualGISclientApplicationServerNameManagementApplicationserver1Applicationserver2ApplicationservernAnalysisServerNameManagementSpatialAnalysisServices1SpatialAnalysisServices2Spatialanalysisservicesn……CORBAbasednamingservicenetwIIIIVVGEandgeographicsynergiesVirtualGeographicEnvironments,isanavatarbasedmultiuserdistributedintelligentthreedimensionalvirtualenvironment,adigitalgeospatialphenomenaandlawsofaparticulargeographicalenvironmentwithmultichannelawareexpression,calculationandsimulation,integratedmanagementoftheEarthcanbeusedformultidimensionalinformationandmultimediaintegratedpublishing,interactive/innovativeblendofstyleearthscienceresearch,andotherdistributedcollaborativeplanning,designanddecisionmaking.IIIIVVGEandgeographicUseravatarInthevirtualgeographicenvironments,bothuseravatarcancommunicatefacetofaceinthesamevirtuallocation.Theincarnationasanexpressionofrealusers,anditssourcecancontainvisual,auditoryandeventasteavarietyofinformationsources,etc.,sothattheuserhasasenseofimmersioncanbeimmersivefeelitselfisavirtualgeographicenvironmentspart.Seeingandhearingotherinformationsourcesmaybecoworkerstocommunicatewhattherealattitudesandemotions,isanimportantpartofcommunicationbetweencoworkersinvirtualgeographicenvironments,andanalysisofgeographicdatainplanninganddecisionmakingalsoplaysaveryimportanteffect.UseravatarInthevirtualgeogACModeForvirtualgeographicenvironmentisnotonlyarealgeographicalbackground,butalsotoprovideareliableplatformfortheexchangeofinformationcoworkersare.Tothisend,weneedmoreresearchonhowtoimprovecommunicationmodesbetweenpeopleandenhancevariousexchangesavatarinvirtualgeographicenvironmentsbetween.Currently,inaccordancewiththetimelinessoftheexchangeofclassifiedNonrealtimecommunication:emailandbulletinboardInstantcommunication:interactive,realtime,includingthetraditionaltwodimensionalscenes,threedimensionalscene,streamingmediatechnologyandintegrationmode.ACModeForvirtualgeographicIV

ThemaindevelopmentofvirtualrealitytechnologyVRMLXMLX3DJava3DVRMLXML地理實(shí)體X3DJAVA3DInthevirtualrealitytechnology,VRML/GeoVRML,XML,X3D,GMLandJava3Dtechnologystrengthscomplementeachother,theuseofgraphicalmodelingcapabilitiesVRML,XMLinternationalization,structured,modularfeaturesandpowerfulJavanetworkprogramminglanguage,togetherformapowerfulvirtualrealityenvironments.IVThemaindevelopmentofIVIVRMLIn1994,thefirstsessionoftheInternationalInternetConferenceinGeneva,Switzerland,proposedtocreateathreedimensionalnetworkinterfacetofacilitatenetworktransmissionVRML.In1995,VRML1.0versionlaunched.In1996,basedonthe1.0versionofthemajorimprovementsintroducedinversion2.0,whichaddsinteractivescenarios,multimediasupport,collisiondetection.In1997,afteranassessmentstandardsorganizations,VRML2.0becometheinternationalstandard,andrenamedtheVRML97.IVIVRMLIn1994,thefirVRMLsimpleexamplesphere.wrl

#VRMLV2.0utf8

Shape{

#Definenodecontainstwoproperties

appearanceAppearance{#Appearanceproperties

materialMaterial{#material，emissiveColor100}

#Reflectivematerial

}

geometrySphere{#Geometricproperties

radius1

}

}VRMLsimpleexamplesphere.wrl

IVIIXMLXMLfullnameinEnglishisExtensibleMarkupLanguage,theChinesetranslationforextensiblemarkuplanguage.ItisanexchangestandardbytheW3C(WorldWideWebConsortium)thepromotionofstructuredinformation,andhasbeenwidelyused.VRMLadoptXMLastheencodingofthemainreasonsisbecausewiththeinternationalnatureofXML,structuredformatandmodularobjectsandotheradvantages.HasbeenclearlyestablishedbytheimplementationoftheXMLspecification,X3DXMLsyntaxiseasytobeimplementedwithouttheneedforahugereverseengineering(reverseengineering).IVIIXMLXMLfullnameiXMLandGISWhatroledoesXMLplayinGISapplications?WecanuseXMLtodefineaquery,infactthetraditionalGISqueryisnodifferent,forexample,cansay,"accordingtoauserspecifiedareafloodedanalysis,andreturnstheresult",theresponsemessagemaybebasedonthe"resultsoftheanalysisinXMLformatthefollowinggraphic."Thedifferenceliesinthetraditionalway,geographicaldataandrequestsunifiedXMLqueriesincludedinaseparateXMLdocument,aresponsemessagealsoXMLdocuments.XMLsupportforcustomtags,providesapowerfulextensionmechanism,whichinevitablymanyuniquemarkappearsGISindustry.XMLandGISWhatroledoesXMLXML與GISOpenGISConsortium(OGC)launchedatimelyGISXMLtagsetGML(GeographyMarkupLanguage),anXMLapplicationinGISprovidesagoodwayofstandardization,theindustryhasbeensupportedbymanycompanies.TheuseofXML,wecanachievemanyGIStasksBrowseandgenerateimages,suchasSVG,VMLandX3Dformats;Dataconversioncanbeperformed,suchasXSLT,Schemacanbeconfigured,suchasDTD,XMLSchemaandthelike;Youcanquerydata,suchasXpointerandXQL,etc.,itcanalsoberunondifferentplatforms,suchasPDA.XML與GISOpenGISConsortium(OGCIVIIIX3DX3DfullnameisExtensible3D(X3DearlynameiscalledVRMLNG,VRMLNextGeneration).Itisascalablenextgeneration3Dgraphicsstandard,andextendedVRML97features.TheoriginofthenameistheintegrationofX3DXML(ExtensibleMarkupLanguage)andVRML(VirtualRealityModelingLanguage).X3DisVRMLsuccessor.VRML(VirtualRealityModelingLanguageVirtualRealityModelingLanguage)istheoriginalnetwork3DgraphicsISOstandard(ISO/IEC14772).IVIIIX3DX3DfullnameiX3Dgoal1.IncludeVRML97features.(X3DcontentcanstillusethetechniquesbrowseVRML)2.XMLintegration.(YoucanuseXMLtoshowVRML97features)3.componentization.(Encapsulatedbythemagnitudeofthecore(core)technology,itcaneasilyaddnewfeatures)4.expandability.(Usingthecomponenttoaddnewnodesandexecutecodeinlinewiththecoretechnology)5.UsetheJavaplatformtoensureuniversalX3Dgoal1.IncludeVRML97featIVIVJAVA3DDuetospacemodelingVRML,GML,X3Dandotherlanguagesloaderdesigndeficiencies,thereisanurgentneedforahighlevelprogramminglanguagetoreplacetheoriginalscriptingcapabilities.Javanetworkandplatformindependenceaswellasitsstrongsupportforthethreedimensionalgraphics,soheoccupiedanimportantpositioninthefuturedevelopmentofthemarketinthethreedimensional.Java3Dhasputforwardanewscheme,asthemodelbasedtechnologyplatformandinputdevicesdependingonthemodel.Itnotonlyprovideshighlevelconstructorconstructionandoperationofthe3Dgeometricobjects,andusetheseconstructorscanalsobuildanycomplexitythevirtualscene,thesevirtualscenelargecosmicobjects,smallmicroscopicparticles.IVIVJAVA3DDuetospacemV

VirtualEnvironmentModelingMethodsandToolsThebasicprincipleistocreateavirtualenvironmentmodelingthreedimensionalmodelingsoftwareandrealobjectsinthreedimensionalspace,likeathreedimensionalmodel,andthengetthepropertiesandtexturedatatomodelrealobjectrendering,simulationmodelsmadeafterthedataconversion,andfinallydriversoftwareinto3Drealtimethreedimensionaldynamicsimulationdemo.EnvironmentalModelingEnvironmentalmodelingprocessAUTOCADand3DSMAXcombinethreedimensionaldynamicsimulationMultigenCreatorandVegathreedimensionalsimulationVVirtualEnvironmentModeVIEnvironmentalModelingEuclideangeometryFractalgeometryPhysicallyBasedModelingImageBasedRenderingHybridModelingTechnology:PhysicallyBasedRenderingandImageBasedRendering,isthefuturedirectionofthevirtualenvironmentmodeling.VIEnvironmentalModelingVIIEnvironmentalmodelingprocess

現(xiàn)實(shí)世界數(shù)據(jù)和紋理采集三維建模仿真渲染數(shù)據(jù)輸出實(shí)時(shí)驅(qū)動景觀仿真VIIEnvironmentalmodelingVIIIAUTOCADand3DSMAXcombinethreedimensionallandscapedynamicssimulationAutoCADand3DSMAXsoftwarearetwokindsofsoftwareinengineeringfield..AutoCADsoftwareintheconstruction,editingatwodimensionalgraphicsfeatures,easytouse,andopen,thereareLISPAutoprogramminglanguagesupportandmanyotheradvantages.3DSMAXsoftwarehasgreatadvantagesin3Dmodeling,animationandrendering..VIIIAUTOCADand3DSMAXVRdataformatconversionIn3dsMaxVRauthoringsystemmodel,combinedwiththerequirementofVRsystem,seewhethertousesuchasLOD(levelofdetail)model,ifneedtouseMaxcomeswithaLODplugindirectlygeneratetheobject'sLODmodel.Finally,accordingtotheenvironmentoftheVRsystemeditorwillthemodeloutputforeditingenvironmentthatcanbereceivedb