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02 About Linear Algebra

图形学依赖线性代数、微积分、统计、光学、力学、信号处理、数值分析...

This Course#

  • Linear Algebra
    • Vectors
    • Matrices

Vectors#

  • \(\vec{a}\)
  • \(\hat{a}=\vec{a}/||\vec{a}||\)
  • \(\mathbf{a}^T=(x, y)\)
  • dot product: 求夹角、求投影
  • cross product:
    • 确定一个向量在另一个向量的左侧还是右侧
    • 确定一个点是否在图形内部,如果在所有边的同侧,那么一定在内部

Matrices#

matrices is transformations

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