NAME
cxPyrLayerGet
- returns the lattice and connection list from one layer of a pyramid
C SPECIFICATION
#include <cx/DataAccess.h>
cxErrorCode cxPyrLayerGet(cxPyramid *src, long index,
cxConnection **conn, cxLattice **lat)
FORTRAN SPECIFICATION
integer function cxPyrLayerGet(src, index, conn, lat)
integer src, index, conn, lat
PARAMETERS
-
src
-
Input pyramid data structure.
-
index
-
Input number of the pyramid layer to query.
-
conn
-
Output pointer to the connection list in the specified pyramid layer.
-
lat
-
Output pointer to the lattice in the specified pyramid layer.
FUNCTION RETURN VALUE
The return value for this function is an integer error code enumeration.
DESCRIPTION
cxPyrLayerGet returns the lattice and connection list for one
layer of a pyramid.
cxPyrLayerGet does not change the shared memory reference count
of the lattice or the connection list in the source pyramid.
Layers are numbered from one through src->count and
index must lie within this range.
cxPyrLayerGet can be used in conjunction with cxPyrGet to
access the base lattice and the layers of a pyramid.
A return value of cx_err_none indicates success, while another value
indicates a NULL input pyramid, a bad index, or an error in
memory allocation.
The user can tell the function not to get information on a particular
field by passing a NULL pointer value. You need not create dummy variables
in the calling routine which calls cxPyrLayerGet, because the request is simply ignored
when the pointer comes in NULL.
SEE ALSO
cxPyrGet(3E),
cxPyrLayerSet(3E)
Last modified: Mon Nov 18 13:52:47 GMT 1996
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© The Numerical Algorithms Group Ltd, Oxford UK. 1996