Conversion at constant ray

The course is carried out on concentric circles whose center is also that of the eye.

General description:

The circumference of a circle (or ellipse) varies with its ray. Thus, instead of obtaining a dot matrix, we obtains a pyramid to which the slopes are close to pi*step_of_run.

This method has the advantage of moving the points very little the ones compared to the others. On the other hand, to maintain this quality, it is necessary to remain under the format of a pyramid and the secondary treatments are not adapted to computations on pyramids...