Geography Reference
In-Depth Information
Fig. 5
Retrieval of virtual objects
Fig. 6
No intersection
circles intersect then the Virtual Sticky is retrieved. The use of circles means that
Euclidean distance is the metric used (as opposed to, say, network distance).
Figure
6
shows two circles that are not intersecting. That would mean the object
in question would not be within the given radius and will not be displayed.
Figure
7
depicts a clear intersection of both circles and consequently this object
will be included and presented on the device.
In future, we plan to experiment with geometries of more complex shapes than
circles (i.e. a road network) and searches by category or any other field that might
be added in future. This introduces the ability to provide more context sensitive
information and annotate spaces in more detailed ways.
