363     positionTiles: function (motion, reset) {  argument
365         if (typeof motion == 'undefined') {
366             motion = { 'x': 0, 'y': 0 };  class in PanoJS.positionTiles
373                 tile.posx = (tile.xIndex * this.tileSize) + this.x + motion.x;
374                 tile.posy = (tile.yIndex * this.tileSize) + this.y + motion.y;
383                         tile.posx = (tile.xIndex * this.tileSize) + this.x + motion.x;
395                         tile.posx = (tile.xIndex * this.tileSize) + this.x + motion.x;
408                         tile.posy = (tile.yIndex * this.tileSize) + this.y + motion.y;
420                         tile.posy = (tile.yIndex * this.tileSize) + this.y + motion.y;
448             this.x += motion.x;
449             this.y += motion.y;
684         var motion = {  class in PanoJS.recenter
689         if (motion.x == 0 && motion.y == 0) {
694             var target = motion;
707             motion = {  class in PanoJS.recenter
713         this.positionTiles(motion, true);
721             'x': coords.x + motion.x,
722             'y': coords.y + motion.y
795         var motion = {  class in PanoJS.release
800         this.x += motion.x;
801         this.y += motion.y;