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Diffstat (limited to 'src/H5Spoint.c')
-rw-r--r-- | src/H5Spoint.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/H5Spoint.c b/src/H5Spoint.c index 581a1c3..60a816c 100644 --- a/src/H5Spoint.c +++ b/src/H5Spoint.c @@ -1010,3 +1010,61 @@ done: FUNC_LEAVE (ret_value); } /* H5S_point_select_deserialize() */ + +/*-------------------------------------------------------------------------- + NAME + H5S_point_bounds + PURPOSE + Gets the bounding box containing the selection. + USAGE + herr_t H5S_point_bounds(space, hsize_t *start, hsize_t *end) + H5S_t *space; IN: Dataspace pointer of selection to query + hsize_t *start; OUT: Starting coordinate of bounding box + hsize_t *end; OUT: Opposite coordinate of bounding box + RETURNS + Non-negative on success, negative on failure + DESCRIPTION + Retrieves the bounding box containing the current selection and places + it into the user's buffers. The start and end buffers must be large + enough to hold the dataspace rank number of coordinates. The bounding box + exactly contains the selection, ie. if a 2-D element selection is currently + defined with the following points: (4,5), (6,8) (10,7), the bounding box + with be (4, 5), (10, 8). + The bounding box calculations _does_ include the current offset of the + selection within the dataspace extent. + GLOBAL VARIABLES + COMMENTS, BUGS, ASSUMPTIONS + EXAMPLES + REVISION LOG +--------------------------------------------------------------------------*/ +herr_t +H5S_point_bounds(H5S_t *space, hsize_t *start, hsize_t *end) +{ + H5S_pnt_node_t *node; /* Point node */ + intn rank; /* Dataspace rank */ + intn i; /* index variable */ + herr_t ret_value=SUCCEED; /* return value */ + + FUNC_ENTER (H5S_point_bounds, FAIL); + + assert(space); + assert(start); + assert(end); + + /* Get the dataspace extent rank */ + rank=space->extent.u.simple.rank; + + /* Iterate through the node, checking the bounds on each element */ + node=space->select.sel_info.pnt_lst->head; + while(node!=NULL) { + for(i=0; i<rank; i++) { + if(start[i]>(hsize_t)(node->pnt[i]+space->select.offset[i])) + start[i]=node->pnt[i]+space->select.offset[i]; + if(end[i]<(hsize_t)(node->pnt[i]+space->select.offset[i])) + end[i]=node->pnt[i]+space->select.offset[i]; + } /* end for */ + node=node->next; + } /* end while */ + + FUNC_LEAVE (ret_value); +} /* H5Sget_point_bounds() */ |