/* get reference value from F-Curve using RNA */
static bool pose_propagate_get_refVal(Object *ob, FCurve *fcu, float *value)
{
PointerRNA id_ptr, ptr;
PropertyRNA *prop;
bool found = false;
/* base pointer is always the object -> id_ptr */
RNA_id_pointer_create(&ob->id, &id_ptr);
/* resolve the property... */
if (RNA_path_resolve_property(&id_ptr, fcu->rna_path, &ptr, &prop)) {
if (RNA_property_array_check(prop)) {
/* array */
if (fcu->array_index < RNA_property_array_length(&ptr, prop)) {
found = true;
switch (RNA_property_type(prop)) {
case PROP_BOOLEAN:
*value = (float)RNA_property_boolean_get_index(&ptr, prop, fcu->array_index);
break;
case PROP_INT:
*value = (float)RNA_property_int_get_index(&ptr, prop, fcu->array_index);
break;
case PROP_FLOAT:
*value = RNA_property_float_get_index(&ptr, prop, fcu->array_index);
break;
default:
found = false;
break;
}
}
}
else {
/* not an array */
found = true;
switch (RNA_property_type(prop)) {
case PROP_BOOLEAN:
*value = (float)RNA_property_boolean_get(&ptr, prop);
break;
case PROP_INT:
*value = (float)RNA_property_int_get(&ptr, prop);
break;
case PROP_ENUM:
*value = (float)RNA_property_enum_get(&ptr, prop);
break;
case PROP_FLOAT:
*value = RNA_property_float_get(&ptr, prop);
break;
default:
found = false;
break;
}
}
}
return found;
}
PyObject *pyrna_array_index(PointerRNA *ptr, PropertyRNA *prop, int index)
{
PyObject *item;
switch (RNA_property_type(prop)) {
case PROP_FLOAT:
item = PyFloat_FromDouble(RNA_property_float_get_index(ptr, prop, index));
break;
case PROP_BOOLEAN:
item = PyBool_FromLong(RNA_property_boolean_get_index(ptr, prop, index));
break;
case PROP_INT:
item = PyLong_FromSsize_t(RNA_property_int_get_index(ptr, prop, index));
break;
default:
PyErr_SetString(PyExc_TypeError, "not an array type");
item = NULL;
}
return item;
}
/* Main Driver Management API calls:
* Add a new driver for the specified property on the given ID block
*/
int ANIM_add_driver(ReportList *reports, ID *id, const char rna_path[], int array_index, short flag, int type)
{
PointerRNA id_ptr, ptr;
PropertyRNA *prop;
FCurve *fcu;
int array_index_max;
int done_tot = 0;
/* validate pointer first - exit if failure */
RNA_id_pointer_create(id, &id_ptr);
if (RNA_path_resolve_property(&id_ptr, rna_path, &ptr, &prop) == false) {
BKE_reportf(reports, RPT_ERROR,
"Could not add driver, as RNA path is invalid for the given ID (ID = %s, path = %s)",
id->name, rna_path);
return 0;
}
/* key entire array convenience method */
if (array_index == -1) {
array_index_max = RNA_property_array_length(&ptr, prop);
array_index = 0;
}
else
array_index_max = array_index;
/* maximum index should be greater than the start index */
if (array_index == array_index_max)
array_index_max += 1;
/* will only loop once unless the array index was -1 */
for (; array_index < array_index_max; array_index++) {
short add_mode = (flag & CREATEDRIVER_WITH_FMODIFIER) ? 2 : 1;
/* create F-Curve with Driver */
fcu = verify_driver_fcurve(id, rna_path, array_index, add_mode);
if (fcu && fcu->driver) {
ChannelDriver *driver = fcu->driver;
/* set the type of the driver */
driver->type = type;
/* creating drivers for buttons will create the driver(s) with type
* "scripted expression" so that their values won't be lost immediately,
* so here we copy those values over to the driver's expression
*/
if (type == DRIVER_TYPE_PYTHON) {
PropertyType proptype = RNA_property_type(prop);
int array = RNA_property_array_length(&ptr, prop);
char *expression = driver->expression;
int val, maxlen = sizeof(driver->expression);
float fval;
if (proptype == PROP_BOOLEAN) {
if (!array) val = RNA_property_boolean_get(&ptr, prop);
else val = RNA_property_boolean_get_index(&ptr, prop, array_index);
BLI_strncpy(expression, (val) ? "True" : "False", maxlen);
}
else if (proptype == PROP_INT) {
if (!array) val = RNA_property_int_get(&ptr, prop);
else val = RNA_property_int_get_index(&ptr, prop, array_index);
BLI_snprintf(expression, maxlen, "%d", val);
}
else if (proptype == PROP_FLOAT) {
if (!array) fval = RNA_property_float_get(&ptr, prop);
else fval = RNA_property_float_get_index(&ptr, prop, array_index);
BLI_snprintf(expression, maxlen, "%.3f", fval);
}
}
/* for easier setup of drivers from UI, a driver variable should be
* added if flag is set (UI calls only)
*/
if (flag & CREATEDRIVER_WITH_DEFAULT_DVAR) {
/* assume that users will mostly want this to be of type "Transform Channel" too,
* since this allows the easiest setting up of common rig components
*/
DriverVar *dvar = driver_add_new_variable(driver);
driver_change_variable_type(dvar, DVAR_TYPE_TRANSFORM_CHAN);
}
}
/* set the done status */
done_tot += (fcu != NULL);
}
/* done */
return done_tot;
}