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REGIONNEIGHBOR

Section: C Library Functions (3)
Updated: 16 Mar 1998
Index

NAME

regionNeighbor - are two regions neighbors?

SYNTAX

#include <xite/region.h>

int regionNeighbor( region* reg1, region* reg2,
int* overlap, int* adjacent, int nc );

DESCRIPTION

Returns overlap=TRUE if reg1 and reg2 overlaps,adjacent=TRUE if the two regions are adjacentbut do not overlap. If the two regions are notneighbors, both overlap and adjacent are FALSE.nc, neighborhood connectedness, may be one of:

1 : use the nc value found in reg1
2 : use the nc value found in reg2
4 : use 4-neighbours
8 : use 8-neighbours

RETURN VALUE

0 => ok
1 => reg1 or reg2 are nil
2 => bad nc value

DIAGNOSTICS

Warning 2 : region argument nil
Error 3 : bad nc argument

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),regionUnion(3), regionOverlap(3), regionVolume(3),regionYline(3)

AUTHOR

Tor L|nnestad, BLAB, ifi, UiONew algorithm by Otto Milvang

EXAMPLE

region *reg1, *reg2;
int overlap, adjacent;
..create reg1 and reg2..
regionNeighbor(reg1, reg2, &overlap, &adjacent, 4);

ID

$Id: regionUnion.c,v 1.20 1997/01/29 10:45:15 svein Exp $

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