unity3d中高级手册01基本4-3变换

1、Transforms UnityManualUserGuideCreatingGameplay Transforms areakeyComponent ineveryGameObject.Theydic Transforms UnityManualUserGuideCreatingGameplay Transforms areakeyComponent ineveryGameObject.Theydic ewheretheGameObjecthowitisro ed, anditsscale.ItissibletohaveaGameObjectransform.YoucanadjustTran

2、sformofanyGameObjectfromtheSceneView,theInspector,orthroughTransforms是一个关键组件在每个GameObject里。它们指定GameObject TheremainderofthispagestextisfromtheTransformComponentReference Transform TheTransformComponentdeterminestheition,ion,andScaleofallheEverysa TheTransformComponentisviewableand在检视器里，Transform 组件是

3、可视与可编辑的Properties 属he位itionoftheTransforminX,Y,andZ与x，y，zTransform旋ionRo ionoftheTransformaroundtheX,Y,andZaxes,measuredinTransform围绕x，y，zScaleoftheTransformalongX,Y,andZaxesValue1istheoriginalsize(sizeatwhichtheobject was imported).沿 x，y，z 轴变换伸缩。值为 1 是原始大小（在该对象导入时的大小）缩AllpropertiesofaTransformareme

4、asuredrelativetotheTransformsparent.IftheTransformhasnothepropertiesareAllpropertiesofaTransformaremeasuredrelativetotheTransformsparent.IftheTransformhasnothepropertiesaremeasuredrelativetoWorldUsingTransforms 使用变换Transformsarealwaysmanipulatedin3DspaceusingX,Y,andZaxes.InUnity,theseaxesarebythecol

5、orsred,green,andbluerespectively.Remember:XYZ= Color-coded relationship n 3 axes and Transform properties 色标3 个轴与变换组件之间的关系TransformComponentscanbedirectlymanipulatedusingtheSceneViewortheInspector.TheInspectorlistthepropertiess edaboveforeasyediting.YousomodifyTransformsinyourScenewiththem,usingtheM

6、ove,Ro e,andScaletools.ThesetoolsareUnityheupperndcornerof TheViewTranslateRo eandScaletools 查看，变换，旋转机伸缩工Thetoolswillbeusableonanyobjectinyourscene.Clickontheobject,andyouwillseethetoolgizmoaroundit.Dependingonthecurrenttool,thegizmowilllookslightlydifferent.ClickingtheobjectwillalsotheTransformcomp

7、onenteheInspector.IftheInspectordoesnotdisplaythecomponentoritsproperties,thenyoudoveanobjectheScene平移工具-旋转工具-缩放工具-AllthreeGizmoscanbedirectlyeditedinSceneView. To平移工具-旋转工具-缩放工具-AllthreeGizmoscanbedirectlyeditedinSceneView. TomanipulatetheTransform,clickanddragononeofthe3gizmoaxes,youllnoticeitscolo

8、rchanges.Asdrag the mouse,you will see the object translate,ro e, or scale alongthe axis. When you release thebutton,youllttheaxisected.YoucanclickthemiddlemousebuttonanddragthetomanipulatetheTransformalongtheselectedaxis.Toofall3sall3axesatonceclickanddragtheAny individual axis 时eselectedwhenyoucli

9、ckonit 的轴将变为选取状态当你在它上面Parenting 父类Parenting is one of the most important concepts to understand when using Unity. When a GameObject is a ParentofanotherGameObject,theChildGameObjectwillmove,ro e,andscaleexactlyasitsParentdoes. Just like your arms are attached to your body, when you turn your body, y

10、our arms move because theyreattached.Anyobjectcanhavemultiplechildren,butonlyone YoucancreateaParentbydragginganyheHierarchyViewontoanother.Thiswillcreate nthetwo YoucancreateaParentbydragginganyheHierarchyViewontoanother.Thiswillcreate nthetwo Areal-worldleofaParent-Childhierarchy.AlltheGameObjects

11、rrowstotheleftare heabovele,wetthearmsareparentedtothebody,andthehandsareparentedtotheThescenesyoumakeinUnitywillcontaincollectionsoftheseTransformhierarchies.ThetopmostobjectiscalledtheRootobject.Whenyoumove,scale,orro eaparent,allthechangesinitsTransformare app d to its children as well.在上面的例子里说胳膊

12、是身体的父，以及手是胳膊的父。在Unity里你创造的场景将包含这些变换层次Itisworthpo ing ttheTransformheInspectorofanyChildGameObjectarerelativetotheParentsTransformvalues.ThesearealsocalledtheLocalCoordinates.Throughscripting,canstheGlobalCoordinatesaswellastheLocal 过Youcanbuildcompoundobjectsbyparentingmultipleseparateobjectstogethe

13、r,liketheskeletalstructureofhumanragdoll.Yousocreatesmallyeteffectiveobjectswithsingleparents.Forle,ifyouhavettakesplaceatnight,youcancreateaneffectiveatmosphereflashlight.Tocreateobject,youwouldparentaspotlightTransformtotheflashlightTransform.Then,anyalterationoftheTransformwillaffectttakesplaceat

14、night,youcancreateaneffectiveatmosphereflashlight.Tocreateobject,youwouldparentaspotlightTransformtotheflashlightTransform.Then,anyalterationoftheTransformwillaffectthespotlight,creatingaconvincingflashlightImportanceofScale 缩放的重ThescaleoftheTransformdeterminesthedifferencenthe sizeofyourmeshinyoura

15、pplication,andthesizeofyourmeshinUnity.ThemeshssizeinUnity(andthereforetheTransformsisveryimportant,llyduringphysicssimulation.Thereare3tcandeterminetheScaleof转换的伸缩确定你的模型程序里的网格大小与Unity里的网格大小之间的不同。在Unity里的网格大小（ Thesizeofyourmeshinyour3Dingapplication. 3DTheMeshScaleFactorheobjectsImportSettings. TheS

16、calevaluesofyourTransformComponent. Ideally,youshouldnotadjusttheScaleofyourheTransformComponent.Thebestoptionistoyoursatreal-lifescale,soyouvetochangeyourTransformsscale.Thesecond-bestoptiontoadjustthescaleatwhichyourmeshisheImportSettingsforyourindividualmesh.optimizationsoccurbasedontheimportsize

17、,andinstantiatingansanadjustedscalevaluedecreaseperformance.Formoreinformation,readthroughtheRigidbodycomponentssectionons WhenparentingTransforms,puttheparentslocationat0,0,0beforeapplyingthechild.Thiswill save you many headaches later. ParticleSystemsarenotaffectedbytheTransformsScale.InordertoscaleaParticleyouneedtomodifytheheSystemsParticleEmitter,Animatorand粒子系统不受变化伸缩的影响。为了伸缩一个粒子系统，你需要修改属性在粒子系统里IfyouareusingRigidbodiesforphysicssimulation,thereissomeimportantIfyouareusingRigidbodiesforphysicssimulation,thereissomeimportanti