alexhu2010q的博客

Chapter 12: Blending between AnimationsThis fade is usually short—a quarter of a second or less. (动画之间的fade一般很快，0.5s甚至更短)本章重点：两个Pose的Blending不同Animations的CrossFading，会有一个cross fade controller来处理一个blend queueAdditive BlendingPose blending也没啥新东西，

参考：https://arrowinmyknee.com/2020/10/13/deep-dive-into-blendspace-in-ue4/主要是对UE的Sync相关的代码不太理解，然后BlendSpace在SyncMarker作用时出的Bug不太好查，所以写下了这篇文章。

参考：https://forums.unrealengine.com/t/animbp-what-is-a-conduit-and-why-do-you-need-it/363568参考：https://docs.unrealengine.com/4.27/en-US/AnimatingObjects/SkeletalMeshAnimation/StateMachines/Overview/动画状态机节点里可以右键添加Conduit State，如下图所示，前面有个拉分支线的图标：Conduit翻译过来

这个概念是在UE4的动画系统里提出的feature，可以让我们设置每个Bone的blend speed。如果没有这玩意儿，正常动画Blend时，所有的Bone的Blend Speed都是相同的。这个功能可以有效解决movement动画之间的transition造成的滑步问题，同时保证上半身动画的流畅性。

Chapter 5: Implementing TransformsIn this chapter, you will implement a structure that holds position, rotation, and scale data. This structure is a transform. A transform maps from one space to another space.这里有个疑问，为什么不用4*4矩阵来记录rotation、position和scale

Chapter 4: Implementing Quaternions其实很多人物的动画里，只有rotation，没有平移或者scale上的变化。Most humanoid animations are created using only rotations—no translation or scale is needed. Think about an elbow joint, for example. The natural motion of an elbow only rotates. I

#Chapter 2: Implementing Vectors详细的可以参考这里重点在以下部分：Understanding component-wise operationsUnderstanding non-component-wise operationsvector的插值和比较大小##简单Vector介绍A vector is an n-tuple of numbers.##创建Vector类这里使用struct来创建，代码如下：// 放在新创建的vec3.h头文件里#

Chapter 1: Creating a Game Window这节课主要是创建Windows窗口，设置OpenGL的Context，具体分为：Open a Win32 windowCreate and bind an OpenGL 3.3 Core contextUse glad to load OpenGL 3.3 Core functionsEnable vsynch for the created windowUnderstand the downloadable samples f

Chapter 11: Optimizing the Animation Pipeline本章的优化的几个思路：用更好的方法来实现skinning更高效的Sample Animation Clips回顾生成matrix palette的方式具体分为以下几个内容：Skin matrix的预处理把skin pallete存到texture里更快的SamplingThe Pose palette generation探讨Pose::GetGlobalTransform函数Skin

Chapter 10: Mesh SkinningDeforming a mesh to match an animated pose is called skinning.Mesh Skinning是基于Animation Pose，改变Mesh去匹配Pose的过程，可以通过Shader进行GPU Skinning，也可以用CPU进行C++这边的Skinning，我以前还写过一篇文章比较它俩的特点。本章重点：skinned mesh与non-skinned mesh的区别了解整个skinn

Chapter 9: Implementing Animation ClipsAn animation clip is a collection of the TransformTrack objects. An animation clip animates a collection of transformsover time and the collection of transforms that is animated is called a pose. Think of a pose as

问题是这样的，我有这么个简单的应用场景，一个PlayableGraph，只有一个output为AnimationPlayableOutput，然后直接连接一个AnimationClipPlayable。现在我的需求是，Editor下，使用脚本，把它的播放状态换成我一个新的Animation Clip。一开始我的代码是这么写的：public class Test : MonoBehaviour{ public AnimationClip clip; public AnimationCl

Chapter 7: Exploring the glTF File FormatglTF is a standard format that can store both mesh and animation data. a file format that contains everything you need to display animated models. It’s a standard format that most three-dimensional content creatio