The eye vector can be created in global coordinates by subtracting asurface position from the eye position and transforming the resulting vector into tangent space.
视向量能够在全局坐标系中通过视点坐标减去表面坐标来创建,并且要把结果转换到切线空间中。
2
Analytical solutions for the electric field due to surface-polarizable ellipsoids located ina uniform external electric field are derived in an ellipsoidal coordinates.