Savoy Releases Hotspots.

Hotspots are active regions of a camera image.  When an operator clicks on a hotspot
(active when holding the CNTRL key down), an assertion is generated to the rule engine
which can perform operations such as controlling PTZ operations or any other function that
the rule engine is capable of.


Hotspots are patterns.
    To create or modify a pattern, right click on a video image, select 'Server.../Patterns'
    from the menu. A dialog box permits you to add/delete named patterns and to define
    the active region by dragging the clicked mouse across the hatched image.

Hotspots are activated by the rule engine
    To activate a pattern as a hotspot, create a rule that asserts:
            Video@@@A Pattern=camera PatternName click;
    where camera is [1..16]..

When the operator clicks on a hotspot, the rule engine asserts:
    Video@@@A PatternSet=PatternName.

    This can in turn cause rueles to fire to control cameras or other functions.

Multiple Patterns per Camera
    You can create any number of patterns and assign more than one to a given
    camera. For example, one pattern could be mapped onto a doorway, while a second
    could map to a sidewalk, each presenting unique assertions to the Rule Engine when
    activity is detected.

Dynamic Assignment of Patterns to Cameras
    Under rules, Patterns can be dynamically assigned to a camera. For example, you
    may only want to invoke a Pattern at certain times of the day, or under certain
    emergency conditions. You can easily create many conceivable conditions under
    which one or more Patterns should be invoked. In a rule, the 'then' side should
    include the assertion 'Pattern=camera name' where 'camera' is the camera number
    and 'name' is the Pattern name. For example, assert 'Pattern=5 Doorway' to assign
    the Doorway Pattern to camera 5.

Using Dynamic Assignment in Pan/Tilt/Zoom Cameras
    PTZ Cameras have multiple 'presets' which lock the camera at a particular view.
    Once positioned, it would be desirable to assign a Pattern for the system to monitor.
    However, when the preset is changed, that Pattern is likely irrelevant, and a different
    Pattern is required for the new preset view. This is easily accomplished with rules
    that dynamically assign Patterns to the PTZ camera based on which preset is
    selected.
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