Matrix Transformation of graphic science

1. Determine a space with a four-sided pyramid, space between two sections is the space to be projected
2. The function of Glulookat, which encapsulates the transformation of the world coordinate system into the observing coordinate system, from the "method of looking at another point from one point (PS: including the direction)"
3. The world coordinate system is the largest coordinate system, the smallest is the model coordinate system, and the final result is the observation coordinate system;
4. Can build a huge virtual world, the world contains a lot of objects, but the world is not "observed", and so with "observation", it is necessary to observe the location and the results of the place (Glulookat), and the need for what can be seen in the position, This is gluperspective.

Matrix Transformation of graphic science