MAN page from RedHat Other XITE-3.3-3.i386.rpm
REGIONUNION
Section: C Library Functions (3)
Updated: 16 Mar 1998
Index
NAME
regionUnion - calculate the union of two regions
SYNTAX
#include <
xite/region.h>
region *regionUnion( region* reg1,
region* reg2, int nc );
DESCRIPTION
regionUnioncreates and returns the union of thetwo input regions reg1 and reg2. nc specifiesthe neighborhood connectedness of the new region:
nc=1 => use reg1->nc
nc=2 => use reg2->nc
nc=4 => use nc = 4-neighbor
nc=8 => use nc = 8-neighbor
If the two regions are not connected, they are simplycopied individually, and connected by setting
copy(reg1)->next = copy(reg2)
- and a pointer to the copy of reg1 is returned.
RETURN VALUE
The region union,
0 => an error occurred
SEE ALSO
regionAnalyse(1),
regionArea(3),
regionConvexHull(3),
regionCreate(3),
regionDraw(3),
regionFree(3),
regionHisto(3),
regionHistoUpdate(3),
regionImoment(3),
regionInsertYline(3),
regionDeleteYline(3)
regionEndInsert(3),
regionXmean(3),
regionYmean(3),
regionMean(3),
regionXmin(3),
regionXmax(3),
regionYmin(3),
regionYmax(3),
regionMinMax(3),
regionCMoment(3),
regionPMoment(3),
regionMoment(3),
regionPerform(3),
regionPerimeter(3),
regionIsPoint(3),
regionPoint(3),
regionSearch(3),
regionSort(3),
regionCopy(3),
regionOverlap(3),
regionNeighbor(3),
regionVolume(3),
regionYline(3)
DIAGNOSTICS
Warning 2 : region argument nil
Error 3 : bad nc argument
Error 4 : malloc failed
AUTHOR
Tor L|nnestad, BLAB, ifi, UiO
EXAMPLE
region *reg1, *reg2, *reg3;
..create reg1 and reg2..
reg3 = regionUnion(reg1, reg2, 4);
ID
$Id: regionUnion.c,v 1.20 1997/01/29 10:45:15 svein Exp $
Index
- NAME
- SYNTAX
- DESCRIPTION
- RETURN VALUE
- SEE ALSO
- DIAGNOSTICS
- AUTHOR
- EXAMPLE
- ID
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