Hello Everone,
I looked at the documentation and samples and have only found a way to draw bounding boxes (rectangles) and text as metadata overlays.
Is there a way to draw lines and images for the metadata overlay?
Sending in metadata you can send in anything, you can define you own format. If you look at the MultiChannelMetadataProvider sample you can see that it sends _peopleCountXml.
https://github.com/milestonesys
In the metadata support that is implemented in the Smart Client today there is only support for bounding boxes. You will not see the people count data from the sample in the Smart Client!
You can develop your own Smart Client plugin that extends the capability to make overlay based on metadata. You should then develop a plugin that can read the metadata and can make an overlay. There is no sample that does this, what comes close and could be used as a starting ground is the SCOverlayGraphOnEvent, it subscribes to / reads analytics events (instead of metadata) and displays the embedded shapes. You could modify it to read metadata. The reading of metadata can be seen in the MetadataLiveViewer and the MetadataPlaybackViewer samples.