An Interface for Manipulating Spatial Aggregation of Graphical Objects
An interface for manipulating spatial aggregations of objects. The aggregated objects are automatically
recognized as a group, and the group structure is visualized
as
a two-dimensional bubble surface that surrounds the
objects. Users can drag, copy, or delete a group by operating on the bubble. Furthermore, to help pick out individual
objects in a dense aggregation, the system spreads
the objects to avoid overlapping when requested
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