This commit is contained in:
Robin Clark 2010-07-22 10:12:59 +01:00
parent 56521c4b7b
commit 29f862801a

View File

@ -469,6 +469,8 @@ A countour is said to be enclosed if it fits completely within another contour.
Pairs of contours may belong to the same pure intersection chain. Pairs of contours may belong to the same pure intersection chain.
Pure Intersection chains are a chain of contours that can all Pure Intersection chains are a chain of contours that can all
be linked together by pure intersection relationships ( see figure \ref{fig:pic} ). be linked together by pure intersection relationships ( see figure \ref{fig:pic} ).
That is to say that all contours within a pure intersection chain are `reachable'
via pure~intersection relationships.
Contours in the pure intersection chain may enclose other members Contours in the pure intersection chain may enclose other members
in the same chain, but not the contour that they are purely intersected with (see figure \ref{fig:picwaie}). in the same chain, but not the contour that they are purely intersected with (see figure \ref{fig:picwaie}).
\par \par