PK_TRANSF_transform_o_t

struct PK_TRANSF_transform_o_s
    {
    int                   o_t_version; --- version number of option structure
    PK_TRANSF_operation_t operation_1; --- operation to apply to 'transf_1'
                                       --- before combining
                                       --- (PK_TRANSF_operation_none_c)
    PK_TRANSF_operation_t operation_2; --- operation to apply to 'transf_2'
                                       --- before combining
                                       --- (PK_TRANSF_operation_none_c)
    PK_LOGICAL_t          modify;      --- whether to modify 'transf_1'
                                       --- (PK_LOGICAL_false)
    };

typedef struct PK_TRANSF_transform_o_s PK_TRANSF_transform_o_t;



This structure holds optional controls for transforming a transform.


Specific Errors:
    PK_ERROR_wrong_transf          (MILD) 'operation_1' or 'operation_2' is set
                                          to PK_TRANSF_operation_invert_c, and
                                          the corresponding 'transf_1' or
                                          'transf_2' has a perspective
                                          component

Used in:

PK_TRANSF_transform_2

The option structure has the following fields :

'operation_1'    What operation to apply to 'transf_1' before combining the
                 transformations.
                 (PK_TRANSF_operation_none_c)

'operation_2'    What operation to apply to 'transf_2' before combining the
                 transformations.
                 (PK_TRANSF_operation_none_c)

'modify'         If set to PK_LOGICAL_false, a new transform will be returned,
                 and the input transforms unmodified. If set to
                 PK_LOGICAL_true, the received 'transf_1' will be modified.
                 Note that 'transf_2' will not be modified, regardless of the
                 value of 'operation_2'.
                 (PK_LOGICAL_false)