| Operators |
select_obj — Select objects from an object tuple.
select_obj(Objects : ObjectSelected : Index : )
select_obj copies the iconic objects with the indices given by Index (starting with 1) from the iconic input object tuple Objects to the output object ObjectSelected. No new storage is allocated for the regions and images. Instead, new objects containing references to the existing objects are created. The number of objects in an object tuple can be queried with the operator count_obj.
For a short description of the iconic objects that are available in HALCON see the introduction of chapter Object.
Input objects.
Selected objects.
Indices of the objects to be selected.
Default value: 1
Suggested values: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 50, 100, 200, 500, 1000, 2000, 5000
Restriction: Index >= 1
/* Access to all Regions */
count_obj(Regions,&Num);
for (i=1; i<=Num; i++)
{
select_obj(Regions,&Single,i);
T_get_region_polygon(Single,5.0,&Row,&Column);
T_disp_polygon(WindowHandleTuple,Row,Column);
destroy_tuple(Row);
destroy_tuple(Column);
}
Runtime complexity: O(|Objects|)
select_obj returns 2 (H_MSG_TRUE) if all objects are contained in the HALCON database and all parameters are correct. If the input is empty the behavior can be set via set_system(::'no_object_result',<Result>:). If necessary, an exception is raised.
count_obj, concat_obj, obj_to_integer
Foundation
| Operators |