Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Motion Tracker
PH_MOTION_TRACKER_OBJECTParameter: Geometry Object
PH_REFERENCE_GEOMETRY_OBJECTParameter: Virtual Keyframes
PH_OBJ_2D_TRACK_USER_AUTOKEYINGParameter: Mode
PH_OBJ_2D_TRACK_USER_AUTOKEYING_MODEParameter: Error Threshold
PH_OBJ_2D_TRACK_USER_AUTOKEYING_ERROR_THRESHOLDParameter: Frame Interval
PH_OBJ_2D_TRACK_USER_AUTOKEYING_INTERVALParameter: Color Filter
PH_OBJ_2D_TRACK_COLOR_MIX_PRESETParameter: Filter.Red
PH_OBJ_2D_TRACK_USER_redWeightActiveParameter: Filter.Green
PH_OBJ_2D_TRACK_USER_greenWeightActiveParameter: Filter.Blue
PH_OBJ_2D_TRACK_USER_blueWeightActiveParameter: Assign Selected
PH_CMD_ASSIGN_SELECTED_TRACKS_TO_OBJECTParameter: Unassign Selected
PH_CMD_UNASSIGN_SELECTED_TRACKS_FROM_OBJECTParameter: Lock Solved Data
PH_KEEP_OBJECT_RECON_WHEN_TRACK_2D_CHANGESParameter: Run Post-Solve BA Optimisation
PH_3D_OBJECT_PNP_SOLVE_USE_DEFERRED_AND_BA_DEBUGParameter: Enforce Geometry
PH_STRICTLY_ENFORCE_KNOWN_GEOM_FOR_OBJECT_SOLVESParameter: Use Alternate Solution
PH_USE_ALTERNATE_PNP_SOLVEParameter: Run 3D Solver for Object
PH_CMD_SOLVE_ALL_STAGES_OBJECT