void predraw_all_structs(
Pint ws_id /* workstation identifier */ Pctrl_flag ctrl_flag /* control the redraw of the structure */
)
typedef enum {
PFLAG_COND,
PFLAG_ALWAYS
} Pctrl_flag ;
Redraws all posted structures. The operations below are carried out in the following order: - All deferred operations on the workstation ws_id are executed. - If ctrl_flag equals PFLAG_COND and the display surface empty entry of the workstation state list is set to NOTEMPTY, the display surface is cleared. If ctrl_flag equals PFLAG_ALWAYS, the display surface empty entry is ignored and the workstation is cleared.
- If the view transformation update state is PENDING, the following workstation state list view table entries are assigned the values contained in the corresponding requested entries: current view orientation matrix current view mapping matrix
current view clipping limits
current x-y clipping indicator
current back clipping indicator
current front clipping indicator This is carried out for all view tables in the workstation state list. The view transformation update state entry is set to NOTPENDING. - If the value of the workstation transformation update state entry in the workstation state list is PENDING, the current workstation window and current workstation viewport entries are assigned the values contained in the requested entries and the workstation transformation update state entry is set to NOTPENDING. - If the value of the workstation state list HLHSR update state entry is PENDING, then the HLHSR mode entry is set to the value contained in the requested entry and the HLHSR update state entry is set to NOTPENDING.
- All the workstation posted structures are redisplayed.
- State of visual representation entry is set to CORRECT.
The effect of this function can differ from the standard if used in combination with GPHIGS extended view extensions. If the list of active views of the workstation is not empty, GPHIGS redraws all the active views instead of the list of posted structures on the workstation. See the GPHIGS user guide for more details on extended views.
open workstation, update workstation, set display update state, post structure, activate view (ext), post on view (ext), redraw extended view (ext)