3D Graphics Principles
Since the computer graphics applications, the role
played becomes increasingly evident in various fields.
The computer screen is two-dimensional coordinate,
and how marked the space objects in the real world on
the computer screen? This is achieved through the
pipeline of three-dimensional observation: the steps of
computer-generated for three-dimensional scene view
are somewhat similar to the photo shooting process.
Firstly, place the camera corresponds to a viewing
position; then need to determine the direction of the
camera, that is, a camera which direction and how to
determine the upward direction of the photo; press the
shutter, in accordance with the camera “reductions
window"(the lens) size to trim the scene, and the light
project the camera film from the visible surface. The
general processing steps are for the three-dimensional
scene and the scene changing to device coordinates: