Track *track = get_drag_track();
int trk_w = track->track_w, trk_h = track->track_h;
float ctr_x = drag_x + drag_w/2, ctr_y = drag_y + drag_h/2;
Track *track = get_drag_track();
int trk_w = track->track_w, trk_h = track->track_h;
float ctr_x = drag_x + drag_w/2, ctr_y = drag_y + drag_h/2;