diff --git a/03-UnrealEngine/Animation/UE5动画重定向笔记.md b/03-UnrealEngine/Animation/UE5动画重定向笔记.md index 97762c1..5565918 100644 --- a/03-UnrealEngine/Animation/UE5动画重定向笔记.md +++ b/03-UnrealEngine/Animation/UE5动画重定向笔记.md @@ -102,12 +102,196 @@ win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../LIBRARYNAME/Lib/ -lLIBR ![](https://help.autodesk.com/cloudhelp/2020/ENU/FBX-Developer-Help/images/scene_org.png) FBX SDK场景图是通过`FbxScene`类抽象出来的。场景被组织为节点层次结构 ( `FbxNode`)。场景的根节点通过 访问`FbxScene::GetRootNode()`。场景元素（例如网格、灯光或相机）是通过将`FbxNode`与 的子类组合来定义的`FbxNodeAttribute`。 +使用Ansii方式输出就可以使用vscode直接查看内部数据结构。 +- GlobalMaterial：世界坐标矩阵 +- LocalMaterial：相对空间矩阵 ## 动画 -- 动画堆栈 ( `FbxAnimStack`) -- 动画层 ( `FbxAnimLayer`) +- 动画堆栈 ( `FbxAnimStack`)：每一个**AnimStack**可以视为一个镜头，包含多个**FbxAnimLayer**。 +- 动画层 ( `FbxAnimLayer`)：每个**AnimLayer**中可以包含多个**FbxAnimCurve**。 - 动画曲线节点 ( `FbxAnimCurveNode`) -- 动画曲线 ( `FbxAnimCurve`) +- 动画曲线 ( `FbxAnimCurve`) ：动画以曲线的方式存在。可以针对骨骼的Location、Rotation分别添加曲线。 - 动画曲线关键点 ( `FbxAnimCurveKey`) +UE导出的FBX相关属性为： +```json + AnimationStack: 1767515526080, "AnimStack::Unreal Take", "" { + Properties70: { + P: "Description", "KString", "", "", "Animation Take for Unreal." + P: "LocalStop", "KTime", "Time", "",183205094709 + } + } + + AnimationLayer: 1770224712128, "AnimLayer::Base Layer", "" { + } + + NodeAttribute: 1767517959504, "NodeAttribute::Root", "Root" { + TypeFlags: "Null", "Skeleton", "Root" + } + NodeAttribute: 1767517960848, "NodeAttribute::Pelvis", "LimbNode" { + TypeFlags: "Skeleton" + } + NodeAttribute: 1767517959696, "NodeAttribute::L_Hip", "LimbNode" { + TypeFlags: "Skeleton" + } + NodeAttribute: 1767517960080, "NodeAttribute::L_Knee", "LimbNode" { + TypeFlags: "Skeleton" + } + +AnimationCurve: 1770213770432, "AnimCurve::", "" { + Default: 0 + KeyVer: 4009 + KeyTime: *120 { + a: 0,1539538600,3079077200,4618615800,6158154400,7697693000,9237231600,10776770200,12316308800,13855847400,15395386000,16934924600,18474463200,20014001800,21553540400,23093079000,24632617600,26172156200,27711694800,29251233400,30790772000,32330310600,33869849200,35409387800,36948926400,38488465000,40028003600,41567542200,43107080800,44646619400,46186158000,47725696600,49265235200,50804773800,52344312400,53883851000,55423389600,56962928200,58502466800,60042005400,61581544000,63121082600,64660621200,66200159800,67739698400,69279237000,70818775600,72358314200,73897852800,75437391400,76976930000,78516468600,80056007200,81595545800,83135084400,84674623000,86214161600,87753700200,89293238800,90832777400,92372316000,93911854600,95451393200,96990931800,98530470400,100070009000,101609547600,103149086200,104688624800,106228163400,107767702000,109307240600,110846779200,112386317800,113925856400,115465395000,117004933600,118544472200,120084010800,121623549400,123163088000,124702626600,126242165200,127781703800,129321242400,130860781000,132400319600,133939858200,135479396800,137018935400,138558474000,140098012600,141637551200,143177089800,144716628400,146256167000,147795705600,149335244200,150874782800,152414321400,153953860000,155493398600,157032937200,158572475800,160112014400,161651553000,163191091600,164730630200,166270168800,167809707400,169349246000,170888784600,172428323200,173967861800,175507400400,177046939000,178586477600,180126016200,181665554800,183205093400 + } + KeyValueFloat: *120 { + a: -0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0 + } + ;KeyAttrFlags: Cubic|TangeantAuto|GenericTimeIndependent, Constant|ConstantStandard + KeyAttrFlags: *2 { + a: 8456,8194 + } + ;KeyAttrDataFloat: RightAuto:0, NextLeftAuto:0; RightSlope:0, NextLeftSlope:0, RightWeight:0.333333, NextLeftWeight:0.333333, RightVelocity:0, NextLeftVelocity:0 + KeyAttrDataFloat: *8 { + a: 0,0,218434821,0,0,0,218434821,0 + } + KeyAttrRefCount: *2 { + a: 119,1 + } + } + AnimationCurve: 1770213768992, "AnimCurve::", "" { + Default: 0 + KeyVer: 4009 + KeyTime: *120 { + a: 0,1539538600,3079077200,4618615800,6158154400,7697693000,9237231600,10776770200,12316308800,13855847400,15395386000,16934924600,18474463200,20014001800,21553540400,23093079000,24632617600,26172156200,27711694800,29251233400,30790772000,32330310600,33869849200,35409387800,36948926400,38488465000,40028003600,41567542200,43107080800,44646619400,46186158000,47725696600,49265235200,50804773800,52344312400,53883851000,55423389600,56962928200,58502466800,60042005400,61581544000,63121082600,64660621200,66200159800,67739698400,69279237000,70818775600,72358314200,73897852800,75437391400,76976930000,78516468600,80056007200,81595545800,83135084400,84674623000,86214161600,87753700200,89293238800,90832777400,92372316000,93911854600,95451393200,96990931800,98530470400,100070009000,101609547600,103149086200,104688624800,106228163400,107767702000,109307240600,110846779200,112386317800,113925856400,115465395000,117004933600,118544472200,120084010800,121623549400,123163088000,124702626600,126242165200,127781703800,129321242400,130860781000,132400319600,133939858200,135479396800,137018935400,138558474000,140098012600,141637551200,143177089800,144716628400,146256167000,147795705600,149335244200,150874782800,152414321400,153953860000,155493398600,157032937200,158572475800,160112014400,161651553000,163191091600,164730630200,166270168800,167809707400,169349246000,170888784600,172428323200,173967861800,175507400400,177046939000,178586477600,180126016200,181665554800,183205093400 + } + KeyValueFloat: *120 { + a: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 + } + ;KeyAttrFlags: Cubic|TangeantAuto|GenericTimeIndependent, Constant|ConstantStandard + KeyAttrFlags: *2 { + a: 8456,8194 + } + ;KeyAttrDataFloat: RightAuto:0, NextLeftAuto:0; RightSlope:0, NextLeftSlope:0, RightWeight:0.333333, NextLeftWeight:0.333333, RightVelocity:0, NextLeftVelocity:0 + KeyAttrDataFloat: *8 { + a: 0,0,218434821,0,0,0,218434821,0 + } + KeyAttrRefCount: *2 { + a: 119,1 + } + } +``` + + +添加动画关键帧的方式 +```c++ +FbxAnimCurve* lCurve = lRoot->LclRotation.GetCurve(lAnimLayer, FBXSDK_CURVENODE_COMPONENT_Z, true); +if (lCurve) +{ + lCurve->KeyModifyBegin(); + lTime.SetSecondDouble(0.0); + //添加时间 + lKeyIndex = lCurve->KeyAdd(lTime); + //添加数值与插值模式 + lCurve->KeySetValue(lKeyIndex, 0.0); + lCurve->KeySetInterpolation(lKeyIndex, FbxAnimCurveDef::eInterpolationCubic); + + lTime.SetSecondDouble(1.0); + lKeyIndex = lCurve->KeyAdd(lTime); + lCurve->KeySetValue(lKeyIndex, 45.0); + lCurve->KeySetInterpolation(lKeyIndex, FbxAnimCurveDef::eInterpolationCubic); + + lTime.SetSecondDouble(2.0); + lKeyIndex = lCurve->KeyAdd(lTime); + lCurve->KeySetValue(lKeyIndex, -45.0); + lCurve->KeySetInterpolation(lKeyIndex, FbxAnimCurveDef::eInterpolationCubic); + + lTime.SetSecondDouble(3.0); + lKeyIndex = lCurve->KeyAdd(lTime); + lCurve->KeySetValue(lKeyIndex, 0.0); + lCurve->KeySetInterpolation(lKeyIndex, FbxAnimCurveDef::eInterpolationCubic); + lCurve->KeyModifyEnd(); +} +``` +### BindPose +遍历所有节点，并对取得GlobalTransform矩阵，最后添加到Pose里。 +```c++ + // Now create a bind pose with the link list + if (lClusteredFbxNodes.GetCount()) + { + // A pose must be named. Arbitrarily use the name of the patch node. + FbxPose* lPose = FbxPose::Create(pScene,pPatch->GetName()); + + // default pose type is rest pose, so we need to set the type as bind pose + lPose->SetIsBindPose(true); + + for (i=0; iEvaluateGlobalTransform(); + + lPose->Add(lKFbxNode, lBindMatrix); + } + + // Add the pose to the scene + pScene->AddPose(lPose); + } +``` + +### ResetPose +```c++ +void StoreRestPose(FbxScene* pScene, FbxNode* pSkeletonRoot) +{ + // This example show an arbitrary rest pose assignment. + // This rest pose will set the bone rotation to the same value + // as time 1 second in the first stack of animation, but the + // position of the bone will be set elsewhere in the scene. + FbxString lNodeName; + FbxNode* lKFbxNode; + FbxMatrix lTransformMatrix; + FbxVector4 lT,lR,lS(1.0, 1.0, 1.0); + + // Create the rest pose + FbxPose* lPose = FbxPose::Create(pScene,"A Bind Pose"); + + // Set the skeleton root node to the global position (10, 10, 10) + // and global rotation of 45deg along the Z axis. + lT.Set(10.0, 10.0, 10.0); + lR.Set( 0.0, 0.0, 45.0); + + lTransformMatrix.SetTRS(lT, lR, lS); + + // 添加Root骨骼矩阵到Pose中 + lKFbxNode = pSkeletonRoot; + lPose->Add(lKFbxNode, lTransformMatrix, false /*GlobalMatrix*/); + + // Set the lLimbNode1 node to the local position of (0, 40, 0) + // and local rotation of -90deg along the Z axis. This show that + // you can mix local and global coordinates in a rest pose. + lT.Set(0.0, 40.0, 0.0); + lR.Set(0.0, 0.0, -90.0); + + lTransformMatrix.SetTRS(lT, lR, lS); + + // 添加第二个骨骼节点到Pose中 + lKFbxNode = lKFbxNode->GetChild(0); + lPose->Add(lKFbxNode, lTransformMatrix, true /*LocalMatrix*/); + + // Set the lLimbNode2 node to the local position of (0, 40, 0) + // and local rotation of 45deg along the Z axis. + lT.Set(0.0, 40.0, 0.0); + lR.Set(0.0, 0.0, 45.0); + + lTransformMatrix.SetTRS(lT, lR, lS); + + // Add the skeleton second node to the pose + lKFbxNode = lKFbxNode->GetChild(0); + lNodeName = lKFbxNode->GetName(); + lPose->Add(lKFbxNode, lTransformMatrix, true /*LocalMatrix*/); + + // Now add the pose to the scene + pScene->AddPose(lPose); +} +``` + ## GlobalSettings 场景的轴系统、系统单位、环境照明和时间设置可以通过`FbxScene::GetGlobalSettings()`获取FbxGlobalSettings来进行定义。 \ No newline at end of file