$y = isset($_GET['y']) ? intval($_GET['y']) : round($mosaic->image_h / $mosaic->mosaic_factor / 2); //get the image index $i = intval($_GET['i']); $j = intval($_GET['j']); //handle the zoom $mosaic->zoomIn($i, $j, $x, $y); } if (isset($_GET['center'])) { //extract x and y click coordinate from imagemap $x = isset($_GET['x']) ? intval($_GET['x']) : round($overview->image_w / $mosaic->mosaic_factor / 2); $y = isset($_GET['y']) ? intval($_GET['y']) : round($overview->image_h / $mosaic->mosaic_factor / 2); //get the image index $i = intval($_GET['i']); $j = intval($_GET['j']); //get click coordinate on overview, use it to centre the main map list($intx, $inty) = $overview->getClickCoordinates($i, $j, $x, $y); $zoomindex = array_search($overview->pixels_per_km, $overview->scales); $scale = $overview->scales[$zoomindex + 1]; $mosaic->setScale($scale); $mosaic->setMosaicFactor(2); $mosaic->setCentre($intx, $inty); } if (isset($_GET['recenter'])) { //extract x and y click coordinate from imagemap $x = isset($_GET['x']) ? intval($_GET['x']) : round($overview->image_w / $mosaic->mosaic_factor / 2); $y = isset($_GET['y']) ? intval($_GET['y']) : round($overview->image_h / $mosaic->mosaic_factor / 2); //get the image index $i = intval($_GET['i']); $j = intval($_GET['j']); //get click coordinate on overview, use it to centre the main map list($intx, $inty) = $overview->getClickCoordinates($i, $j, $x, $y);