NAME
im_flood, im_flood_blob - flood a area
SYNOPSIS
#include <vips/vips.h>
int im_flood( im, x, y, ink, dout )
IMAGE *im;
int x, y;
PEL *ink;
Rect *dout;
int im_flood_blob( im, x, y, ink, dout )
IMAGE *im;
int x, y;
PEL *ink;
Rect *dout;
DESCRIPTION
im_flood() fills an enclosed area from a starting point, painting ink
into 4-way connected pels whose colour is not equal to ink.
im_flood_blob() floods with the ink colour, finding pels 4-way
connected to the start pel which are the same colour as the start pel.
It is useful for changing the colour of a blob of pels which all have
the same value.
RETURN VALUE
All functions return 0 on success and -1 on error.
SEE ALSO
im_insertplace(3), im_smudge(3).
30 October 1992 IM_FLOOD(3)