Changeset 7184


Ignore:
Timestamp:
May 18, 2011 12:23:06 AM (5 years ago)
Author:
strk
Message:

Add a short paragraph about the semantic of edge's next_left_edge and next_right_edge fields.

File:
1 edited

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  • trunk/topology/README

    r6497 r7184  
    9797         * mbr box2d ( can be NULL )
    9898
    99 Details on semantic are contained in the SQL/MM specification, which
     99The next_*_edge of an edge is the edge you encounter next while going
     100around the specified face (right or left) in counterclockwise order
     101(so that the face is on your left). Note that due to this definition
     102the edge being considered is traversed in reverse order when traversing
     103its "right" face. The values are signed to indicate wheter the next edge
     104will be traversed in its original or reversed orientation.
     105
     106More details on semantic are contained in the SQL/MM specification, which
    100107this implementation follows as for these views structure.
    101108
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