Real-Time 3D Graphics with WebGL 2 - Second Edition

View Transform

The next transformation, the view transform, shifts the origin of the coordinate system to the view origin. The view origin is where our eye or camera is located with respect to the world origin. In other words, the view transform switches world coordinates by view coordinates. This transformation is encoded in the View matrix. We multiply this matrix by the vertex coordinates obtained by the model transform. The result of this operation is a new set of vertex coordinates whose origin is the view origin. It is in this coordinate system that our camera is going to operate.

We will return to this later in the chapter!