Window Based Tracking Systems

Window based tracking systems from other models in the window will be displayed in the current model's tracking systems list (provided the current model also contains window based tracking systems).

For example, the first tracking system (T1) from the first model (M1) will be displayed as M1:T1 in another model's tracking systems list. The entity definition for other models cannot be changed, however other properties of the tracking system can be changed (even though they are not part of the current model).

A tracking system will be removed from another model's tracking systems list whenever the Window track option is deactivated (changing the mode from "window" based back to "model" based).
Note: All of the use cases below assume the following scenario: a window containing two models (M1 and M2), and each model contains a tracking system (T1 and T2).

What happens when a tracking system is made "window" based?

If M1:T1 is set to “window” mode and it is made current, then M2’s current tracking system will be reset to 0. Whenever M2 is drawn, it will check to see if any window based tracking system is active in the post window and if that is true, M2 will use that system’s transform for drawing itself.

At this point, M2 can still override the window based tracking by setting M2:T1 as current. If M1:T1 mode is set to “window” but it is not made current, nothing will happen.

What happens when a window tracking system is deleted?

If M1:T1 is set to “window” mode and it is made current, then M2 will use M1’s tracking transform for drawing.

At this point, if M1:T1 is deleted, M2 will be drawn as if the ”Clear tracking system” option was set for M2.

The effects of the “Use tracking system” option in other panels (for example, the Contour panel).

If M1:T1 is set to “window” mode and it is made current, then M2 will use M1’s tracking transform only for drawing/animation (similar to the Deformed panel).

In the context of M2, if the “Use tracking” option is activated in Contour panel, it is equivalent to applying the contour with no tracking system.

Editing tracking systems belonging to other models.

If M1:T1 is set to "window" mode and it is made current, then when M2 is made the current model, M1:T1 will display in the tracking system list. If M1:T1 is then changed to "model" based, it will be removed from M2’s tracking system list.