Presentation Management

The PrsMgr package provides low level services and is only to be used when you do not want to use the services provided by AIS.

PrsMgr manages display through the following services:

- supplying a graphic structure for the object to be presented

- recalculating presentations when required, e.g. by moving the object or changing its color

- defining the display mode of the object to be presented; in the case of AIS_Shape, for example, this determines whether the object is to be displayed in:

- wireframe 0

- shading 1.

Note that:

- each new Interactive Object must have all its display modes defined.