var GetTilesWithin = require('./GetTilesWithin'); 
var CalculateFacesWithin = require('./CalculateFacesWithin'); 
var Copy = function (srcTileX, srcTileY, width, height, destTileX, destTileY, recalculateFaces, layer){ 
if (srcTileX < 0) { 
srcTileX = 0; 
} 
if (srcTileY < 0) { 
srcTileY = 0; 
} 
if (recalculateFaces === undefined) { 
recalculateFaces = true ; 
} 
var srcTiles = GetTilesWithin(srcTileX, srcTileY, width, height, null , layer); 
var offsetX = destTileX - srcTileX; 
var offsetY = destTileY - srcTileY; 
for (var i = 0; 
i < _AN_Read_length('length', srcTiles); i++ ){ 
var tileX = srcTiles[i].x + offsetX; 
var tileY = srcTiles[i].y + offsetY; 
if (tileX >= 0 && tileX < layer.width && tileY >= 0 && tileY < layer.height) { 
if (layer.data[tileY][tileX]) { 
layer.data[tileY][tileX].copy(srcTiles[i]); 
} 
} 
} 
if (recalculateFaces) { 
CalculateFacesWithin(destTileX - 1, destTileY - 1, width + 2, height + 2, layer); 
} 
} 
; 
module.exports = Copy;