The CG Basics Computer Graphics # Linear Algebra 点乘：\vec a{\cdot}\vec b=|\vec a||\vec b|\cos\theta 常用于求夹角，判断向量前后等 ![[Pasted image 20240922013742.png]] 叉乘：\vec a{\times}\vec b=|\vec a
Physically Based Rendering Intro Physically Based Rendering Radiometry Radiant Energy: Q[J=Joule] Radiant Flux/Power: \Phi=\frac{dQ}{dt} [W=walt],[lm=lumen] Radiant Intensity辐射度: I(\omega)=\frac{d\Phi(\omega)}{
