It is a surface generated by translating a planer curve a certain distance along a specified direction.

Translation matrix in 3D transformation in parametric form (parameter‘s’) is,

$P(s)=\left[\begin{array}{cccc}{1} & {0} & {0} & {n_{1} s} \\ {0} & {1} & {0} & {n_{2} s} \\ {0} & {0} & {1} …