vault backup: 2024-10-30 19:11:55

.obsidian/plugins/various-complements/histories.json

@@ -1 +1 @@
-{"582020846":{"582020846":{"currentFile":{"count":1,"lastUpdated":1727792069567}}},"根据bComputeExport，分别使用RDG的ComputeShader与PixelShader输出DepthStencil。":{"根据bComputeExport，分别使用RDG的ComputeShader与PixelShader输出DepthStencil。":{"currentFile":{"count":1,"lastUpdated":1727249472660}}},"MeshDraw":{"MeshDraw":{"internalLink":{"count":1,"lastUpdated":1727260163677}}},"实现了一个在屏幕空间宽度恒定的":{"实现了一个在屏幕空间宽度恒定的":{"currentFile":{"count":1,"lastUpdated":1728700795488}}},"TsDirectorCamManagerActor":{"TsDirectorCamManagerActor":{"currentFile":{"count":1,"lastUpdated":1729139925413}}},"Bloom":{"Bloom":{"currentFile":{"count":1,"lastUpdated":1729490733473}}},"FBloomFinalizeApplyConstantsCS":{"FBloomFinalizeApplyConstantsCS":{"currentFile":{"count":1,"lastUpdated":1729584275683}}},"解决NaiLin高跟":{"解决NaiLin高跟":{"currentFile":{"count":1,"lastUpdated":1729587089926}}},"优化项目举例，参与多个项目。":{"优化项目举例，参与多个项目。":{"currentFile":{"count":1,"lastUpdated":1729696025968}}},"制作各种编辑器工具":{"制作各种编辑器工具":{"currentFile":{"count":1,"lastUpdated":1729696038138}}}}
+{"582020846":{"582020846":{"currentFile":{"count":1,"lastUpdated":1727792069567}}},"实现了一个在屏幕空间宽度恒定的":{"实现了一个在屏幕空间宽度恒定的":{"currentFile":{"count":1,"lastUpdated":1728700795488}}},"TsDirectorCamManagerActor":{"TsDirectorCamManagerActor":{"currentFile":{"count":1,"lastUpdated":1729139925413}}},"Bloom":{"Bloom":{"currentFile":{"count":1,"lastUpdated":1729490733473}}},"FBloomFinalizeApplyConstantsCS":{"FBloomFinalizeApplyConstantsCS":{"currentFile":{"count":1,"lastUpdated":1729584275683}}},"解决NaiLin高跟":{"解决NaiLin高跟":{"currentFile":{"count":1,"lastUpdated":1729587089926}}},"优化项目举例，参与多个项目。":{"优化项目举例，参与多个项目。":{"currentFile":{"count":1,"lastUpdated":1729696025968}}},"制作各种编辑器工具":{"制作各种编辑器工具":{"currentFile":{"count":1,"lastUpdated":1729696038138}}},"RigidBodyIndex":{"RigidBodyIndex":{"currentFile":{"count":1,"lastUpdated":1730280351906}}}}

01-Diary/周小结/2024.10.md

@@ -19,4 +19,5 @@
 2. 2024心仪生日会
 	1. 添加心仪呆毛以及物理效果。
 3. 解决新棚手柄输入反应慢的问题。
-4. 解决 道具新投影仪播放节目会有拖影的问题。
+4. 解决 道具新投影仪播放节目会有拖影的问题。
+5. 解决 2套嘉然衣服无法接收到动捕数据的问题。

02-Note/DAWA/ASoul/动画相关/动捕逻辑.md

@@ -36,6 +36,16 @@ void AChingmuMocapReceiverActor::BeginPlay()
 }
 ```
 
+ FChingmuThread::Run()中处理完[[#ST_MocapFrameData]]之后，将几个演员动补数据存入FrameQueue之后。在Tick()出队，之后数据存入AllHumanFrames/AllRigidBodyFrames。
+
+- AllHumanFrames
+	- ID
+	- std::vector<ST_MocapFrameData*> Frames
+		- ID
+		- TimeStamp
+		- FrameIndex
+		- BonesWorldPos
+		- BonesLocalRot
 
 ```c++
 void AChingmuMocapReceiverActor::Tick(float DeltaTime)
@@ -46,17 +56,17 @@ void AChingmuMocapReceiverActor::Tick(float DeltaTime)
 	{
 		Sender = GetMotionSender();
 	}
-	const auto CurTime = ULiveDirectorStatics::GetUnixTime();
+	const auto CurTime = ULiveDirectorStatics::GetUnixTime();//获取当前系统时间
 	if(UseThread)
 	{
 		// 线程方式
 		// 在数据队列中获取青瞳数据
-		while (!FrameQueue.IsEmpty())
+		while (!FrameQueue.IsEmpty())//处理完所有
 		{
 			ST_MocapFrameData* Frame;
-			if (FrameQueue.Dequeue(Frame))
+			if (FrameQueue.Dequeue(Frame))//出队
 			{
-				PutMocapDataIntoFrameList(Frame);
+				PutMocapDataIntoFrameList(Frame);//将帧数数据塞入对应HuamnID/RigidBodyID的AllHumanFrames/AllRigidBodyFrames中。
 			}
 		}
 	}
@@ -76,19 +86,125 @@ void AChingmuMocapReceiverActor::Tick(float DeltaTime)
 }
 ```
 
+### 采样相关逻辑
+- ***SampleByTimeStamp***()
 ```c++
 void AChingmuMocapReceiverActor::DoSample(TArray<MocapFrames*>& Frames)
 {
 	for (auto i = 0; i < Frames.Num(); i++)
 	{
-		Frames[i]->CheckSize(CacheLimit);
+		Frames[i]->CheckSize(CacheLimit);//判断当前帧数据是否超过指定长度（240帧，2~4秒数据），移除超出长度的数据。
-		if (SampleByTimeStamp(Frames[i]->Frames))
+		if (SampleByTimeStamp(Frames[i]->Frames))//对数据进行插值，当前插值数据存在SampledHumanData。
 		{
-			SendFrameToCharacter();
+			SendFrameToCharacter();//执行对应的TsChingmuMocapReceiverActor.ts中的逻辑，主要是触发一个事件，讲数据传递给TsMotionRetargetComponent.ts 或者 TsSceneLiveLinkPropActor.ts（动捕道具）
 		}
 	}
 }
+
+class MocapFrames
+{
+public:
+	int ID;
+	std::vector<ST_MocapFrameData*> Frames = {};
+
+public:
+	MocapFrames(): ID(0)
+	{
+	}
+
+	bool CheckSize(const int Limit)
+	{
+		if (Frames.size() > Limit)
+		{
+			const int DeletedCount = Frames.size() / 2;
+			for (auto i = 0; i < DeletedCount; i++)
+			{
+				auto Data = Frames[i];
+				if (Data)
+				{
+					delete Data;
+				}
+				Data = nullptr;
+			}
+			Frames.erase(Frames.cbegin(), Frames.cbegin() + DeletedCount);
+			return true;
+		}
+		return false;
+	}
+};
 ```
+
+对数据进行插值，当前插值数据存在**SampledHumanData**。
+```c++
+bool AChingmuMocapReceiverActor::SampleByTimeStamp(std::vector<ST_MocapFrameData*>& DataList)
+{
+	const int64 SampleTime = ULiveDirectorStatics::GetUnixTime() - UMotionUtils::BackSampleTime;//UMotionUtils::BackSampleTime = 100ms,采样100ms的数据。
+	int Previous = -1;
+	int Next = -1;
+	for (int Index = DataList.size() - 1; Index > 0; Index--)//从Last => First遍历所有数据，确定插值的2个数据Index。
+	{
+		const ST_MocapFrameData* Data = DataList[Index];
+		if (Data == nullptr)
+		{
+			continue;
+		}
+		if (Data->TimeStamp - SampleTime > 0)
+		{
+			Next = Index;
+		}
+		else
+		{
+			Previous = Index;
+			break;
+		}
+	}
+
+	if (bShowSampleLog)
+	{
+		UE_LOG(LogTemp, Warning, TEXT("prev: %d, next: %d, total: %llu"), Previous, Next, DataList.size());
+	}
+	if (Previous != -1 && Next != -1)
+	{
+		const auto p = DataList[Previous];
+		const auto n = DataList[Next];
+		const float Factor = (n->TimeStamp - p->TimeStamp) > 0
+			                     ? (1.0 * (SampleTime - p->TimeStamp) / (n->TimeStamp - p->TimeStamp))
+			                     : 1.0;
+		// Bone world pos cannot lerp like this
+		// It will cause bone length changes all the time
+		SampledHumanData->ID = p->ID;
+		SampledHumanData->TimeStamp = SampleTime;
+		SampledHumanData->FrameIndex = p->FrameIndex;
+		for (auto Index = 0; Index < 23; Index++)//对23个骨骼进行差值。
+		{
+			SampledHumanData->BonesWorldPos[Index] = UKismetMathLibrary::VLerp(
+				p->BonesWorldPos[Index], n->BonesWorldPos[Index], Factor);
+			SampledHumanData->BonesLocalRot[Index] = UKismetMathLibrary::RLerp(p->BonesLocalRot[Index].Rotator(),
+			                                                                   n->BonesLocalRot[Index].Rotator(),
+			                                                                   Factor, true).Quaternion();
+		}
+		return true;
+	}
+	if (Previous != -1)//容错处理，全都是Previous，数据太旧直接清空。
+	{
+		SampledHumanData->CopyFrom(DataList[Previous]);
+
+		if(SampleTime - DataList[Previous]->TimeStamp > UMotionUtils::MotionTimeout)
+		{
+			// data is too old, clear the data list.
+			DataList.clear();
+		}
+		return true;
+	}
+	if (Next != -1)//没有Previous，直接复制Next的数据。
+	{
+		SampledHumanData->CopyFrom(DataList[Next]);
+		return true;
+	}
+	return false;
+}
+```
+
 ### FChingmuThread
 用途为：
 - 获取当前系统时间。
@@ -98,7 +214,7 @@ void AChingmuMocapReceiverActor::DoSample(TArray<MocapFrames*>& Frames)
 	- 根据当前时间与当前Frames，从UChingMUComponent中将数据复制到[[#ST_MocapFrameData]]中。
 	- 将[[#ST_MocapFrameData]]转换成JSON后，使用AMotionSenderActor::OnGetRawMocapData_NotInGameThread()发送。
 	- 将当前帧数据加入FrameQueue队列。
-- 线程睡眠0.001s。
+- 线程睡眠0.001s。以此保证AChingmuMocapReceiverActor::Tick()中可以把数据都处理完。
 
 ```c++
 uint32 FChingmuThread::Run()
@@ -169,6 +285,8 @@ uint32 FChingmuThread::Run()
 ```
 
 ## ST_MocapFrameData
+- ST_MocapFrameData为动捕数据的原始帧数据。
+
 ```c++
 #define MOCAP_BONE_COUNT 23