E

element

A single component or index.

evaluation

The OpenGL process of generating object-coordinate vertices and parameters from previously specified Bézier equations.

execute

To call an OpenGL command in immediate mode or to call the display list that the command is a part of.

eye coordinates

The coordinate system that follows transformation by the modelview matrix and that precedes transformation by the projection matrix. Lighting and application-specific clipping are done in eye coordinates.