说明

通过AActor::AttachToComponent将Actor附加到可变换组件的挂载点上, 要求已在组件上添加挂载点, 并提供以下信息

挂载函数 AActor::AttachToComponent

AActor::AttachToComponent

可变换组件: USceneComponent及其派生类

挂载规则: FAttachmentTransformRules对象

FAttachmentTransformRules

说明

UE_5.1/Engine/Source/Runtime/Engine/Classes/Engine/EngineTypes.h

如何计算附加Actor的变换属性

数据成员

• LocationRule, RotationRule和ScaleRule

  1. 对应变换属性的三个分量
     
  2. 使用EAttachmentRule进行设置
     

• bInWeldSimulatedBodies

  Whether to weld simulated bodies together when attaching
  
  不知道效果, 设为false
  

构造函数

1. 对变换属性的分量应用相同规则
   

   Copy1FAttachmentTransformRules(EAttachmentRule InRule, bool bInWeldSimulatedBodies)
   2    : LocationRule(InRule)
   3    , RotationRule(InRule)
   4    , ScaleRule(InRule)
   5    , bWeldSimulatedBodies(bInWeldSimulatedBodies)
   6{}

2. 为变换属性定制规则
   

   Copy1FAttachmentTransformRules(EAttachmentRule InLocationRule, EAttachmentRule InRotationRule, EAttachmentRule InScaleRule, bool bInWeldSimulatedBodies)
   2    : LocationRule(InLocationRule)
   3    , RotationRule(InRotationRule)
   4    , ScaleRule(InScaleRule)
   5    , bWeldSimulatedBodies(bInWeldSimulatedBodies)
   6{}

EAttachmentRule

说明

UE_5.1/Engine/Source/Runtime/Engine/Classes/Engine/EngineTypes.h

如何计算附件Actor的最终变换矩阵

API

枚举成员

不知道区别, 使用SnapToTarget; 使用KeepRelative可以达到一样的效果