Determines if another binary polygon overlap has occurred and, if so, returns the polygon that is in overlap with the input polygon.
Syntax
05 GDL-FIND-NEXT-POLYGON-OVERLAP.
10 GDL-FNPO-HANDLE PIC S9(09) BINARY.
10 GDL-FNPO-OUTPUT-SHAPE PIC S9(09) BINARY.
*
CALL "GDLFNPO"
USING GDL-FIND-NEXT-POLYGON-OVERLAP GDL-RETURN-CODE.Arguments
GDL-FNPO-HANDLE
The gdlFileHandle returned by GDLOSF (GDL-OSF- STATIAL-HANDLE). Input.
GDL-FNPO-OUTPUT-SHAPE
A pointer to the overlapping polygon. Output.
Return Values
| GDL-OK | Success |
| GDL-ERROR | An internal error occurred |
| GDL-NOT-FOUND | No further returns are available |
Prerequisites
GDLFPO
Alternates
GDLFNPOP - If percentage overlap is required.
Notes
Following instances of this procedure, you should call GDLSF with the output polygon when you are finished using the output polygon to release system resources.