Plane equation defined by normal vector and constant of plane The plane equation defined by normal vector N and constant D is x · n = D

Plane equation defined by normal vector and constant of plane The plane equation defined by normal vector N and constant D is x · n = D

The general equation of plane can be written as: (x-a) · n = 0, then x · n = a · n = D. if n is unit direction, then D is the normal projection of a vector whose terminal point is any point on the plane, which is a fixed value