繞固定 xyz 軸旋轉

struct mat3 { float3 x; float3 y; float3 z; }; float3 rotation(float3 mp, float3 pos) { float s = 0.0f; float c = 0.0f; struct mat3 rotX; s = sin(mp.x); c = cos(mp.x); rotX.x = (float3)(1

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