Open Access

Figure 6


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Vectors used to check whether receiver resides “above” or “below” the current ray of minimum distance. An analogous procedure can be done to check whether it is located “left” or “right”.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.