int *smf_jsatiles_region( AstRegion *region, smfJSATiling *skytiling,
int *ntile, int *status ){
/* Local Variables */
AstFrameSet *fs;
AstKeyMap *km;
AstRegion *region2;
AstRegion *space_region;
AstRegion *tregion;
AstSkyFrame *skyframe;
char text[ 200 ];
const char *key;
double *mesh = NULL;
double *xmesh;
double *ymesh;
int *tiles = NULL;
int axes[ 2 ];
int i;
int ineb;
int itile2;
int itile;
int ix;
int iy;
int key_index;
int lbnd[ 2 ];
int mapsize;
int npoint;
int old_sv;
int overlap;
int ubnd[ 2 ];
int value;
int xoff[ 4 ] = { -1, 0, 1, 0 };
int xt;
int yoff[ 4 ] = { 0, 1, 0, -1 };
int yt;
/* Initialise */
*ntile = 0;
/* Check inherited status */
if( *status != SAI__OK ) return tiles;
/* Start an AST context so that all AST objects created in this function
are annulled automatically. */
astBegin;
/* Identify the celestial axes in the Region. */
atlFindSky( (AstFrame *) region, &skyframe, axes + 1, axes, status );
/* Report an error if no celestial axes were found. */
if( !skyframe && *status == SAI__OK ) {
space_region = NULL;
*status = SAI__ERROR;
errRep( "", "The current WCS Frame in the supplied Region or "
"NDF does not include celestial longitude and latitude axes.",
status );
/* Otherwise, if the Region itself is 2-dimensional, it does not contain
any other axes, so just use it as is. */
} else if( astGetI( region, "Naxes" ) == 2 ) {
space_region = astClone( region );
/* Otherwise, create a new Region by picking the celestial axes from the
supplied Region. Report an error if a Region cannot be created in this
way. */
} else {
space_region = astPickAxes( region, 2, axes, NULL );
if( !astIsARegion( space_region ) && *status == SAI__OK ) {
*status = SAI__ERROR;
errRep( "", "The celestial longitude and latitude axes in the "
"supplied Region or NDF are not independent of the other "
"axes.", status );
}
}
/* Create a FrameSet describing the whole sky in which each pixel
corresponds to a single tile in SMF__JSA_HPX projection. The current
Frame is ICRS (RA,Dec) and the base Frame is grid coords in which each
grid pixel corresponds to a single tile. */
smf_jsatile( -1, skytiling, 0, SMF__JSA_HPX, NULL, &fs, NULL, lbnd, ubnd,
status );
/* Map the Region using the FrameSet obtained above so that the new Region
describes offsets in tiles from the lower left tile. If "space_region"
is a Polygon, ensure that the SimpVertices attribute is set so that the
simplify method will take non-linearities into account (such as the
region being split by the RA=12h meridian). */
astInvert( fs );
fs = astConvert( space_region, fs, "SKY" );
if( !fs && *status == SAI__OK ) {
*status = SAI__ERROR;
errRep( "", "Cannot convert the supplied Region to ICRS.", status );
goto L999;
}
old_sv = -999;
if( astIsAPolygon( space_region ) ){
if( astTest( space_region, "SimpVertices" ) ) {
old_sv = astGetI( space_region, "SimpVertices" );
}
astSetI( space_region, "SimpVertices", 0 );
}
region2 = astMapRegion( space_region, fs, fs );
if( astIsAPolygon( space_region ) ){
if( old_sv == -999 ) {
astClear( space_region, "SimpVertices" );
} else {
astSetI( space_region, "SimpVertices", old_sv );
}
}
/* Get a mesh of all-sky "grid" positions (actually tile X and Y indices)
covering the region. Since the mesh positions are limited in number
and placed arbitrarily within the Region, the mesh will identify some,
but potentially not all, of the tiles that overlap the Region. */
astGetRegionMesh( region2, 0, 0, 2, &npoint, NULL );
mesh = astMalloc( 2*npoint*sizeof( *mesh ) );
astGetRegionMesh( region2, 0, npoint, 2, &npoint, mesh );
/* Find the index of the tile containing each mesh position, and store
them in a KeyMap using the tile index as the key and "1" (indicating
the tile overlaps the region) as the value. The KeyMap is sorted by
age of entry. Neighbouring tiles will be added to this KeyMap later.
If an entry has a value of zero, it means the tile does not overlap
the supplied Region. If the value is positive, it means the tile
does overlap the supplied Region. If the value is negative, it means
the tile has not yet been tested to see if it overlaps the supplied
Region. */
km = astKeyMap( "SortBy=KeyAgeDown" );
xmesh = mesh;
ymesh = mesh + npoint;
for( i = 0; i < npoint && *status == SAI__OK; i++ ) {
ix = (int)( *(xmesh++) + 0.5 ) - 1;
iy = (int)( *(ymesh++) + 0.5 ) - 1;
itile = smf_jsatilexy2i( ix, iy, skytiling, status );
if (itile != VAL__BADI) {
sprintf( text, "%d", itile );
astMapPut0I( km, text, 1, NULL );
}
}
/* Starting with the oldest entry in the KeyMap, loop round checking all
entries, in the order they were added, until all have been checked.
Checking an entry may cause further entries to be added to the end of
the KeyMap. */
key_index = 0;
mapsize = astMapSize( km );
while( key_index < mapsize && *status == SAI__OK ) {
key = astMapKey( km, key_index++ );
/* Convert the key string to an integer tile index. */
itile = atoi( key );
/* Get the integer value associated with the tile. */
astMapGet0I( km, key, &value );
/* If the tile associated with the current KeyMap entry has not yet been
tested for overlap with the requested Region (as shown by the entry
value being -1), test it now. */
if( value == -1 ) {
/* Get a Region covering the tile. */
smf_jsatile( itile, skytiling, 0, SMF__JSA_HPX, NULL, NULL, &tregion,
lbnd, ubnd, status );
/* See if this Region overlaps the user supplied region. Set the value of
the KeyMap entry to +1 or 0 accordingly. */
overlap = astOverlap( tregion, space_region );
if( overlap == 0 ) {
if( *status == SAI__OK ) {
*status = SAI__ERROR;
errRep( "", "Cannot align supplied Region with the sky "
"tile coordinate system (programming error).",
status );
}
} else if( overlap == 1 || overlap == 6 ) {
value = 0;
} else {
value = 1;
}
astMapPut0I( km, key, value, NULL );
}
/* Skip the current KeyMap entry if the corresponding tile does not
overlap the requested Region (as shown by the entry value being zero). */
if( value == 1 ) {
/* The current tile overlaps the supplied Region, so add the tile index to
the returned list of tile indices. */
tiles = astGrow( tiles, ++(*ntile), sizeof( *tiles ) );
if( *status == SAI__OK ) {
tiles[ *ntile - 1 ] = itile;
/* Add the adjoining tiles to the end of the KeyMap so that they will be
tested in their turn, giving them a value of -1 to indicate that they
have not yet been tested to see if they overlap the supplied Region.
Ignore adjoining tiles that are already in the keyMap. */
smf_jsatilei2xy( itile, skytiling, &xt, &yt, NULL, status );
for( ineb = 0; ineb < 4; ineb++ ) {
itile2 = smf_jsatilexy2i( xt + xoff[ ineb ], yt + yoff[ ineb ],
skytiling, status );
if( itile2 != VAL__BADI ) {
sprintf( text, "%d", itile2 );
if( !astMapHasKey( km, text ) ) {
astMapPut0I( km, text, -1, NULL );
mapsize++;
}
}
}
}
}
}
/* Arrive here if an error occurs. */
L999:;
/* Free resources. */
mesh = astFree( mesh );
if( *status != SAI__OK ) {
tiles = astFree( tiles );
*ntile = 0;
}
astEnd;
return tiles;
}
void smurf_jsatileinfo( int *status ) {
/* Local Variables */
AstCmpRegion *overlap;
AstFitsChan *fc;
AstFrameSet *fs;
AstObject *obj;
AstRegion *region;
AstRegion *target;
HDSLoc *cloc = NULL;
HDSLoc *xloc = NULL;
char *jcmt_tiles;
char *tilendf = NULL;
char text[ 200 ];
double dec[ 8 ];
double dist;
double dlbnd[ 2 ];
double dubnd[ 2 ];
double gx[ 8 ];
double gy[ 8 ];
double maxdist;
double norm_radec[2];
double point1[ 2 ];
double point2[ 2 ];
double ra[ 8 ];
double ra0;
double dec0;
int *ipntr;
int axes[ 2 ];
int create;
int dirlen;
int el;
int exists;
int flag;
int i;
int indf1;
int indf2;
int indf3;
int itile;
int iv;
int jtile;
int lbnd[ 2 ];
int local_origin;
int nc;
int place;
int tlbnd[ 2 ];
int tubnd[ 2 ];
int ubnd[ 2 ];
smf_jsaproj_t proj;
int xt;
int yt;
smfJSATiling skytiling;
void *pntr;
/* Check inherited status */
if( *status != SAI__OK ) return;
/* Start a new AST context. */
astBegin;
/* Get the instrument to use abnd get the parameters describing the
layout of its JSA tiles. */
smf_jsainstrument( "INSTRUMENT", NULL, SMF__INST_NONE, &skytiling,
status );
/* Return the maximum tile index. */
parPut0i( "MAXTILE", skytiling.ntiles - 1, status );
/* Abort if an error has occurred. */
if( *status != SAI__OK ) goto L999;
/* Decide what sort of projection to use. */
parChoic( "PROJ", "HPX", "HPX,HPX12,XPHN,XPHS", 1, text, sizeof(text),
status );
proj = smf_jsaproj_fromstr( text, 1, status );
/* If required, create an all-sky NDF in which each pixel covers the area
of a single tile, and holds the integer tile index. The NDF has an
initial size of 1x1 pixels, but is expanded later to the required size. */
lbnd[ 0 ] = ubnd[ 0 ] = lbnd[ 1 ] = ubnd[ 1 ] = 1;
ndfCreat( "ALLSKY", "_INTEGER", 2, lbnd, ubnd, &indf3, status );
/* If a null (!) value was supplied for parameter ALLSKY, annull the
error and pass on. */
if( *status == PAR__NULL ) {
errAnnul( status );
/* Otherwise, create a FrameSet describing the whole sky in which each
pixel corresponds to a single tile. */
} else {
smf_jsatile( -1, &skytiling, 0, proj, NULL, &fs, NULL, lbnd, ubnd,
status );
/* Change the bounds of the output NDF. */
ndfSbnd( 2, lbnd, ubnd, indf3, status );
/* Store the FrameSet in the NDF. */
ndfPtwcs( fs, indf3, status );
/* Map the data array. */
ndfMap( indf3, "Data", "_INTEGER", "WRITE/BAD", (void **) &ipntr, &el,
status );
/* Create all-sky map using XPH projection. */
if( *status == SAI__OK ) {
/* Loop round every tile index. */
for( jtile = 0; jtile < skytiling.ntiles; jtile++ ) {
/* Get the zero-based (x,y) indices of the tile within an HPX projection.
This flips the bottom left half-facet up to the top right. */
smf_jsatilei2xy( jtile, &skytiling, &xt, &yt, NULL, status );
/* Convert these HPX indices to the corresponding indices within the
required projection. Note, the lower left facet is split by the above
call to smf_jsatilei2xy tile (i.e. (xt,yt) indices are *not* in the
"raw" mode). For instance, (0,0) is not a valid tile. */
smf_jsatilexyconv( &skytiling, proj, xt, yt, 0, &xt, &yt, status );
/* Get the vector index of the corresponding element of the all-sky NDF. */
if( proj == SMF__JSA_HPX || proj == SMF__JSA_HPX12 ) {
iv = xt + 5*skytiling.ntpf*yt;
} else {
iv = xt + 4*skytiling.ntpf*yt;
}
/* Report an error if this element has already been assigned a tile
index. Otherwise, store the tile index. */
if( ipntr[ iv ] == VAL__BADI ) {
ipntr[ iv ] = jtile;
} else if( *status == SAI__OK ) {
*status = SAI__ERROR;
errRepf( "", "%s projection assigns multiple tiles to "
"pixel (%d,%d).", status, text, xt, yt );
break;
}
}
}
/* Store NDF title. */
sprintf( text, "JSA tile indices for %s data", skytiling.name );
ndfCput( text, indf3, "TITLE", status );
/* Store the instrument as a component in the SMURF extension. */
ndfXnew( indf3, "SMURF", "INSTRUMENT", 0, 0, &xloc, status );
ndfXpt0c( skytiling.name, indf3, "SMURF", "INSTRUMENT", status );
datAnnul( &xloc, status );
/* Close the NDF. */
ndfAnnul( &indf3, status );
}
/* Abort if an error has occurred. */
if( *status != SAI__OK ) goto L999;
/* Get the zero-based index of the required tile. If a null value is
supplied, annull the error and skip to the end. */
parGdr0i( "ITILE", 0, 0, skytiling.ntiles - 1, 0, &itile, status );
if( *status == PAR__NULL ) {
errAnnul( status );
goto L999;
}
/* See if the pixel origin is to be at the centre of the tile. */
parGet0l( "LOCAL", &local_origin, status );
/* Display the tile number. */
msgBlank( status );
msgSeti( "ITILE", itile );
msgSeti( "MAXTILE", skytiling.ntiles - 1);
msgOut( " ", " Tile ^ITILE (from 0 to ^MAXTILE):", status );
/* Get the FITS header, FrameSet and Region defining the tile, and the tile
bounds in pixel indices. */
smf_jsatile( itile, &skytiling, local_origin, proj, &fc, &fs, ®ion,
lbnd, ubnd, status );
/* Write the FITS headers out to a file, annulling the error if the
header is not required. */
if( *status == SAI__OK ) {
atlDumpFits( "HEADER", fc, status );
if( *status == PAR__NULL ) errAnnul( status );
}
/* If required, write the Region out to a text file. */
if( *status == SAI__OK ) {
atlCreat( "REGION", (AstObject *) region, status );
if( *status == PAR__NULL ) errAnnul( status );
}
/* Store the lower and upper pixel bounds of the tile. */
parPut1i( "LBND", 2, lbnd, status );
parPut1i( "UBND", 2, ubnd, status );
/* Display pixel bounds on the screen. */
msgSeti( "XL", lbnd[ 0 ] );
msgSeti( "XU", ubnd[ 0 ] );
msgSeti( "YL", lbnd[ 1 ] );
msgSeti( "YU", ubnd[ 1 ] );
msgOut( " ", " Pixel bounds: (^XL:^XU,^YL:^YU)", status );
/* Get the RA,Dec at the tile centre. */
if( astTest( fs, "SkyRef" ) ) {
ra0 = astGetD( fs, "SkyRef(1)" );
dec0 = astGetD( fs, "SkyRef(2)" );
/* Format the central RA and Dec. and display. Call astNorm on the
coordinates provided that the frame set has the correct number of
axes (which it should as it comes from smf_jsatile). */
norm_radec[0] = ra0;
norm_radec[1] = dec0;
if (astGetI(fs, "Naxes") == 2) astNorm(fs, norm_radec);
msgSetc( "RACEN", astFormat( fs, 1, norm_radec[ 0 ] ));
msgSetc( "DECCEN", astFormat( fs, 2, norm_radec[ 1 ] ));
msgOut( " ", " Centre (ICRS): RA=^RACEN DEC=^DECCEN", status );
/* Transform a collection of points on the edge of the region (corners and
side mid-points) from GRID coords to RA,Dec. */
point1[ 0 ] = 0.5;
point1[ 1 ] = 0.5;
point2[ 0 ] = ubnd[ 0 ] - lbnd[ 0 ] + 1;
point2[ 1 ] = ubnd[ 1 ] - lbnd[ 1 ] + 1;
gx[ 0 ] = point1[ 0 ]; /* Bottom left */
gy[ 0 ] = point1[ 1 ];
gx[ 1 ] = point1[ 0 ]; /* Centre left */
gy[ 1 ] = gy[ 0 ];
gx[ 2 ] = point1[ 0 ]; /* Top left */
gy[ 2 ] = point2[ 1 ];
gx[ 3 ] = gx[ 0 ]; /* Top centre */
gy[ 3 ] = point2[ 1 ];
gx[ 4 ] = point2[ 0 ]; /* Top right */
gy[ 4 ] = point2[ 1 ];
gx[ 5 ] = point2[ 0 ]; /* Centre right */
gy[ 5 ] = gy[ 0 ];
gx[ 6 ] = point2[ 0 ]; /* Bottom right */
gy[ 6 ] = point1[ 1 ];
gx[ 7 ] = gx[ 0 ]; /* Bottom centre */
gy[ 7 ] = point1[ 1 ];
astTran2( fs, 8, gx, gy, 1, ra, dec );
/* Find the arc-distance from the centre to the furthest point from the
centre. */
point1[ 0 ] = ra0;
point1[ 1 ] = dec0;
maxdist = -1.0;
for( i = 1; i < 8; i++ ) {
if( ra[ i ] != AST__BAD && dec[ i ] != AST__BAD ) {
point2[ 0 ] = ra[ i ];
point2[ 1 ] = dec[ i ];
dist = astDistance( fs, point1, point2 );
if( dist > maxdist ) maxdist = dist;
}
}
/* Convert from radius to diameter. */
maxdist *= 2.0;
/* Format this size as a dec value (i.e. arc-distance) and display it. */
if( maxdist > 0.0 ) {
msgSetc( "SIZE", astFormat( fs, 2, maxdist ) );
msgOut( " ", " Size: ^SIZE", status );
} else {
maxdist = AST__BAD;
msgOut( " ", " Size: <unknown>", status );
}
/* If a discontinuity passes through the tile, the centre and size may be
unknown. */
} else {
ra0 = AST__BAD;
dec0 = AST__BAD;
maxdist = AST__BAD;
msgOut( " ", " Centre (ICRS): RA=<unknown> DEC=<unknown>", status );
msgOut( " ", " Size: <unknown>", status );
}
/* Write the tile centre ra and dec in radians to the output parameters. */
parPut0d( "RACEN", norm_radec[ 0 ], status );
parPut0d( "DECCEN", norm_radec[ 1 ], status );
/* Write the size to the output parameter as radians. */
parPut0d( "SIZE", maxdist, status );
/* Get the translation of the environment variable JSA_TILE_DIR. */
jcmt_tiles = getenv( "JSA_TILE_DIR" );
/* Initialise the path to the tile's NDF to hold the root directory.
Use the current working directory if JSA_TILE_DIR is undefined. */
if( jcmt_tiles ) {
nc = 0;
tilendf = astAppendString( tilendf, &nc, jcmt_tiles );
} else {
nc = 512;
jcmt_tiles = astMalloc( nc );
while( !getcwd( jcmt_tiles, nc ) ) {
nc *= 2;
jcmt_tiles = astRealloc( jcmt_tiles, nc );
}
nc = 0;
tilendf = astAppendString( tilendf, &nc, jcmt_tiles );
jcmt_tiles = astFree( jcmt_tiles );
}
/* Complete the path to the tile's NDF. */
tilendf = astAppendString( tilendf, &nc, "/" );
tilendf = astAppendString( tilendf, &nc, skytiling.subdir );
dirlen = nc;
sprintf( text, "/tile_%d.sdf", itile );
tilendf = astAppendString( tilendf, &nc, text );
/* Write it to the output parameter. */
parPut0c( "TILENDF", tilendf, status );
/* See if the NDF exists, and store the flag in the output parameter. */
exists = access( tilendf, F_OK ) ? 0 : 1;
parPut0l( "EXISTS", exists, status );
/* If the NDF does not exist, create it if required. */
parGet0l( "CREATE", &create, status );
if( !exists && create && *status == SAI__OK ) {
/* Write the NDF info to the screen. */
msgSetc( "NDF", tilendf );
msgOutif( MSG__NORM, " ", " NDF: ^NDF (created)", status );
/* Temporarily terminate the NDF path at the end of the subdirectory. */
tilendf[ dirlen ] = 0;
/* Create the required directory (does nothing if the directory
already exists). It is given read/write/search permissions for owner
and group, and read/search permissions for others. */
(void) mkdir( tilendf, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH );
/* Replace the character temporarily overwritten above. */
tilendf[ dirlen ] = '/';
/* Now create the tile's NDF. */
ndfPlace( NULL, tilendf, &place, status );
ndfNew( skytiling.type, 2, lbnd, ubnd, &place, &indf1, status );
/* Fill its data array with zeros. */
ndfMap( indf1, "Data", skytiling.type, "WRITE/ZERO", &pntr, &el,
status );
/* Store the WCS FrameSet. */
ndfPtwcs( fs, indf1, status );
/* If the instrument jsatiles.have variance, fill the variance array with zeros. */
if( skytiling.var ) {
ndfMap( indf1, "Variance", skytiling.type, "WRITE/ZERO", &pntr,
&el, status );
}
/* Create a SMURF extension. */
ndfXnew( indf1, SMURF__EXTNAME, SMURF__EXTTYPE, 0, NULL, &xloc, status );
/* Store the tile number and instrument name in the extension. */
datNew0I( xloc, "TILE", status );
datFind( xloc, "TILE", &cloc, status );
datPut0I( cloc, itile, status );
datAnnul( &cloc, status );
datNew0C( xloc, "INSTRUMENT", strlen( skytiling.name ), status );
datFind( xloc, "INSTRUMENT", &cloc, status );
datPut0C( cloc, skytiling.name, status );
datAnnul( &cloc, status );
/* Create a weights NDF within the SMURF extension, and fill its data
array with zeros. */
ndfPlace( xloc, "WEIGHTS", &place, status );
ndfNew( skytiling.type, 2, lbnd, ubnd, &place, &indf2, status );
ndfMap( indf2, "Data", skytiling.type, "WRITE/ZERO", &pntr, &el,
status );
ndfPtwcs( fs, indf2, status );
ndfAnnul( &indf2, status );
/* Annul the extension locator and the main NDF identifier. */
datAnnul( &xloc, status );
ndfAnnul( &indf1, status );
/* Write the NDF info to the screen. */
} else {
msgSetc( "NDF", tilendf );
msgSetc( "E", exists ? "exists" : "does not exist" );
msgOut( " ", " NDF: ^NDF (^E)", status );
}
/* Initialise TBND and TLBND to indicate no overlap. */
tlbnd[ 0 ] = 1;
tlbnd[ 1 ] = 1;
tubnd[ 0 ] = 0;
tubnd[ 1 ] = 0;
/* Attempt to to get an AST Region (assumed to be in some 2D sky coordinate
system) using parameter "TARGET". */
if( *status == SAI__OK ) {
kpg1Gtobj( "TARGET", "Region",
(void (*)( void )) F77_EXTERNAL_NAME(ast_isaregion),
&obj, status );
/* Annul the error if none was obtained. */
if( *status == PAR__NULL ) {
errAnnul( status );
/* Otherwise, use the supplied object. */
} else {
target = (AstRegion *) obj;
/* If the target Region is 3-dimensional, remove the third axis, which
is assumed to be a spectral axis. */
if( astGetI( target, "Naxes" ) == 3 ) {
axes[ 0 ] = 1;
axes[ 1 ] = 2;
target = astPickAxes( target, 2, axes, NULL );
}
/* See if there is any overlap between the target and the tile. */
overlap = NULL;
flag = astOverlap( region, target );
if( flag == 0 ) {
msgOut( "", " Cannot convert between the coordinate system of the "
"supplied target and the tile.", status );
} else if( flag == 1 || flag == 6 ) {
msgOut( "", " There is no overlap between the target and the tile.",
status );
} else if( flag == 2 ) {
msgOut( "", " The tile is contained within the target.",
status );
tlbnd[ 0 ] = lbnd[ 0 ];
tlbnd[ 1 ] = lbnd[ 1 ];
tubnd[ 0 ] = ubnd[ 0 ];
tubnd[ 1 ] = ubnd[ 1 ];
} else if( flag == 3 ) {
overlap = astCmpRegion( region, target, AST__AND, " " );
} else if( flag == 4 ) {
overlap = astCmpRegion( region, target, AST__AND, " " );
} else if( flag == 5 ) {
msgOut( "", " The target and tile are identical.",
status );
tlbnd[ 0 ] = lbnd[ 0 ];
tlbnd[ 1 ] = lbnd[ 1 ];
tubnd[ 0 ] = ubnd[ 0 ];
tubnd[ 1 ] = ubnd[ 1 ];
} else if( *status == SAI__OK ) {
*status = SAI__OK;
errRepf( "", "Unexpected value %d returned by astOverlap "
"(programming error).", status, flag );
}
/* If a region containing the intersection of the tile and target was
created above, map it into the grid coordinate system of the tile. */
if( overlap ) {
overlap = astMapRegion( overlap, astGetMapping( fs, AST__CURRENT,
AST__BASE ),
astGetFrame( fs, AST__BASE ) );
/* Get its GRID bounds. */
astGetRegionBounds( overlap, dlbnd, dubnd );
/* Convert to integer. */
tlbnd[ 0 ] = ceil( dlbnd[ 0 ] - 0.5 );
tlbnd[ 1 ] = ceil( dlbnd[ 1 ] - 0.5 );
tubnd[ 0 ] = ceil( dubnd[ 0 ] - 0.5 );
tubnd[ 1 ] = ceil( dubnd[ 1 ] - 0.5 );
/* Convert to PIXEL indices within the tile. */
tlbnd[ 0 ] += lbnd[ 0 ] - 1;
tlbnd[ 1 ] += lbnd[ 1 ] - 1;
tubnd[ 0 ] += lbnd[ 0 ] - 1;
tubnd[ 1 ] += lbnd[ 1 ] - 1;
msgOutf( "", " The target overlaps section (%d:%d,%d:%d).",
status, tlbnd[ 0 ], tubnd[ 0 ], tlbnd[ 1 ], tubnd[ 1 ] );
}
}
}
/* Store the pixel index bounds of the tiles overlap with the target. */
parPut1i( "TLBND", 2, tlbnd, status );
parPut1i( "TUBND", 2, tubnd, status );
/* Arrive here if an error occurs. */
L999:;
/* Free resources. */
tilendf = astFree( tilendf );
/* End the AST context. */
astEnd;
/* Issue a status indication.*/
msgBlank( status );
if( *status == SAI__OK ) {
msgOutif( MSG__VERB, "", "JSATILEINFO succeeded.", status);
} else {
msgOutif( MSG__VERB, "", "JSATILEINFO failed.", status);
}
}
