Windows NT 4 currently supports only DirectX 3. The goal is to find an object framework that will wrap these technologies. In the Direct3D by default the Origin is at the bottom left corner of your screen. Z gets larger as you move away from the viewer, into the screen. A Vectors is a line between two points.
Planes are flat surfaces that extent infinitely in two directions.
In Direct3D, a face is a triangular area on a plane. A vertex is a point used to describe the corners of a face. Describing 3D Shapes You can describe 3D shapes with a mesh, usually built in a third party tool and stored in an X file. A mesh is made up of a series of faces. Normals are vectors often used to describe the colors of the faces in a mesh.