🚧 under construction
線性代數 ⟩ 向量空間 ⟩ 線性變換 ⟩ R³ 中的旋轉
A rotation in R3\mathbb{R}^3R3 is a function ρ:R3→R3\rho:\mathbb{R}^3 \to \mathbb{R}^3ρ:R3→R3 that preserves lengths, angles, and handedness:
保長:∥ρ(v)∥=∥v∥\|\rho(\mathbf{v})\| = \|\mathbf{v}\| ∥ρ(v)∥=∥v∥
保角:ρ(u)⋅ρ(v)=u⋅v\rho(\mathbf{u}) \cdot \rho(\mathbf{v}) = \mathbf{u} \cdot \mathbf{v}ρ(u)⋅ρ(v)=u⋅v (保內積)
保方向性:ρ(u)×ρ(v)=ρ(u×v)\rho(\mathbf{u}) \times \rho(\mathbf{v}) = \rho(\mathbf{u} \times \mathbf{v})ρ(u)×ρ(v)=ρ(u×v) (保外積)
(註:「保內積」即可「保長」,所以第一個條件是多餘的)
四元數 ⟩ 內積、外積 、旋轉變換
旋轉矩陣
Math for 3D Game ⟩ 3.6.2 Rotations with Quaternions ⭐️
Last updated 2 years ago
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