Seonglae ChoWe can’t do compute perspective projection
사영기하학에서 n차원 사영 공간을 n+1개의 좌표로 나타내는 좌표를 동차좌표라 한다
w로 1 많이 사용
normal coordinate is heterogeneous
Homogeneous Coordinates | Yasen Hu
In mathematics, homogeneous coordinates or projective coordinates is a system of coordinates used in projective geometry, as Cartesian coordinates used in Euclidean geometry. It is a coordinate system that algebraically treats all points in the projective plane (both Euclidean and ideal) equally. Suppose we have a point $(x,y)$ in the Cartesian coordinates.
https://yasenh.github.io/post/homogeneous-coordinates/
