int mask_exists(int64_t position, int direction);
// Perform interpolation
- void get_points(ArrayList<MaskPoint*> *points, int submask, int64_t position, int direction);
+ void get_points(MaskPoints *points, int submask, int64_t position, int direction);
double get_feather(int64_t position, int i, int direction);
double get_fader(int64_t position, int i, int direction);
int total_submasks(int64_t position, int direction);