/* This function should always be used to get the appropriate type-info, as it
* has checks which prevent segfaults in some weird cases.
*/
FModifierTypeInfo *fmodifier_get_typeinfo(FModifier *fcm)
{
/* only return typeinfo for valid modifiers */
if (fcm)
return get_fmodifier_typeinfo(fcm->type);
else
return NULL;
}
/* This function should always be used to get the appropriate type-info, as it
* has checks which prevent segfaults in some weird cases.
*/
const FModifierTypeInfo *fmodifier_get_typeinfo(const FModifier *fcm)
{
/* only return typeinfo for valid modifiers */
if (fcm) {
return get_fmodifier_typeinfo(fcm->type);
}
else {
return NULL;
}
}
/* Add a new F-Curve Modifier to the given F-Curve of a certain type */
FModifier *add_fmodifier(ListBase *modifiers, int type, FCurve *owner_fcu)
{
const FModifierTypeInfo *fmi = get_fmodifier_typeinfo(type);
FModifier *fcm;
/* sanity checks */
if (ELEM(NULL, modifiers, fmi)) {
return NULL;
}
/* special checks for whether modifier can be added */
if ((modifiers->first) && (type == FMODIFIER_TYPE_CYCLES)) {
/* cycles modifier must be first in stack, so for now, don't add if it can't be */
/* TODO: perhaps there is some better way, but for now, */
CLOG_STR_ERROR(&LOG,
"Cannot add 'Cycles' modifier to F-Curve, as 'Cycles' modifier can only be "
"first in stack.");
return NULL;
}
/* add modifier itself */
fcm = MEM_callocN(sizeof(FModifier), "F-Curve Modifier");
fcm->type = type;
fcm->flag = FMODIFIER_FLAG_EXPANDED;
fcm->curve = owner_fcu;
fcm->influence = 1.0f;
BLI_addtail(modifiers, fcm);
/* tag modifier as "active" if no other modifiers exist in the stack yet */
if (BLI_listbase_is_single(modifiers)) {
fcm->flag |= FMODIFIER_FLAG_ACTIVE;
}
/* add modifier's data */
fcm->data = MEM_callocN(fmi->size, fmi->structName);
/* init custom settings if necessary */
if (fmi->new_data) {
fmi->new_data(fcm->data);
}
/* update the fcurve if the Cycles modifier is added */
if ((owner_fcu) && (type == FMODIFIER_TYPE_CYCLES)) {
calchandles_fcurve(owner_fcu);
}
/* return modifier for further editing */
return fcm;
}
/* Add a new F-Curve Modifier to the given F-Curve of a certain type */
FModifier *add_fmodifier(ListBase *modifiers, int type)
{
FModifierTypeInfo *fmi = get_fmodifier_typeinfo(type);
FModifier *fcm;
/* sanity checks */
if (ELEM(NULL, modifiers, fmi))
return NULL;
/* special checks for whether modifier can be added */
if ((modifiers->first) && (type == FMODIFIER_TYPE_CYCLES)) {
/* cycles modifier must be first in stack, so for now, don't add if it can't be */
// TODO: perhaps there is some better way, but for now,
printf("Error: Cannot add 'Cycles' modifier to F-Curve, as 'Cycles' modifier can only be first in stack.\n");
return NULL;
}
/* add modifier itself */
fcm = MEM_callocN(sizeof(FModifier), "F-Curve Modifier");
fcm->type = type;
fcm->flag = FMODIFIER_FLAG_EXPANDED;
fcm->influence = 1.0f;
BLI_addtail(modifiers, fcm);
/* tag modifier as "active" if no other modifiers exist in the stack yet */
if (modifiers->first == modifiers->last)
fcm->flag |= FMODIFIER_FLAG_ACTIVE;
/* add modifier's data */
fcm->data = MEM_callocN(fmi->size, fmi->structName);
/* init custom settings if necessary */
if (fmi->new_data)
fmi->new_data(fcm->data);
/* return modifier for further editing */
return fcm;
}
