3D数学基础:图形与游戏开发
Chapter 4 Vectors 第4章 向量
4.1 Vector — A Mathematical Definition 向量——数学定义
4.1.1 Vectors vs. Scalars 向量和标量
“velocity” and “displacement” are vector quantities, while “speed” and “distance” are
scalar quantities
4.1.2 Vector Dimension 向量的维度
4.1.3 Notation 记法
Row vs. column vectors 行向量列向量
4.2 Vector — A Geometric Definition 4.2 向量——几何定义
4.2.1 What Does a Vector Look Like? 箭头,包含大小和方向
4.2.2 Position vs. Displacement 4.2.2 位置与位移
4.2.3 Specifying Vectors 4.2.3 向量的表达
The numbers in a vector measure signed displacements in each dimension
代表各个维度的有向位移
4.2.4 Vectors as a Sequence of Displacements 4.2.4 将向量表示为位移序列.
break the vector into its axially aligned components.
When these axially aligned displacements are combined, they
cumulatively define the displacement defined by the vector as a whole.
分解成轴平行的分量。当这些分量的位移组合起来,就代表了这个向量的位移。
The different orderings correspond to different routes along the axially aligned bounding box con-
taining the vector.
4.3 Vectors vs. Points
A “point” specifies a position, and a “vector” specifies a
displacement
4.3.1 Relative Position
reference frame 参考系
4.3.2 The Relationship Between Points and Vectors
When you think of a loca-
tion, think of a point and visualize a dot.When you think of a displacement, think of a vector and
visualize an arrow.
chapter 5 Operations on vectors 第5章 向量运算
Normalized Vectors
5.8 Vector Addition and Subtraction
vector addition is commutative(交换律), but vector sub-
traction is not。
5.10 Vector Dot Product
dot product (also known as the inner product).
点乘,也叫内积
5.11 Vector Cross Product
cross product or outer product 叉乘,外积
a×b.
The operation a·b×c is known as the triple product
anticommutative: a×b= –(b×a).
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】凌霞软件回馈社区,博客园 & 1Panel & Halo 联合会员上线
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】博客园社区专享云产品让利特惠,阿里云新客6.5折上折
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步