Mathematical Objects
Mathematical, or Pure Geometric Objects, are
dynamically created objects, which are not part of the model. but rather
used for geometric calculations. Mathematical Objects do not normally implement
IEntity_DG interface.
Mathematical Objects can be created with a query similar to:
IObjectGenerator_DG >
Create<IPlane_DG") >
IPlane_DG
Examples of Mathematical Objects are: Frame,
Splined 3D Curves, and simpler
objects like Oriented Box,
Plane and
arcs
Although Mathematical Objects are not part of the model, in many cases they still can
be rendered in the scene using IScene_DG.CreatePresentationEntity().
IDraw_DG is another way of "drawing into the model" for simple objects.
See also: Rotation Sample, Sample List.
