Some of basic Boolean
opeartions performed on polygons is shown
below. The Boolean operations
are all regularised one. For the figure
shown below 3 basic
operations are performed.
Regularised Union
-- denoted by U*
Regularised Intersection
-- denoted by I*
Regularised Negation
-- denoted by -*
Any solution to a set of polygons may contain one or a set of voids as shown below for which a tree structure is to be used to
store the parameters of a polygon.The polygon contains 2 voids which are also the part of the solution and they are stored in structure of tree.
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