104         $overlay = $this->extractPoints($str_points);
112             $imgUrl .= $this->getGoogle($gmap, $overlay);
118                 $_firstimageID = $this->getStaticOSM($gmap, $overlay);
126                 $imgUrl   .= $this->getBing($gmap, $overlay) . "&.png";
144             $_firstimageID = $this->getStaticOSM($gmap, $overlay);
178         if ($overlay !== []) {
179             foreach ($overlay as $data) {
311         $overlay = [];
325             $overlay [] = [$lat, $lon, $text, $angle, $opacity, $img];
327         return $overlay;
334      * @param array $overlay
336     private function getGoogle(array $gmap, array $overlay): string  argument
362         if ($overlay !== []) {
364             foreach ($overlay as $data) {
383      * @param array $overlay
447      * @param array $overlay
452     private function getStaticOSM(array $gmap, array $overlay)  argument
471             if ($overlay !== []) {
472                 foreach ($overlay as $data) {
547             if ($overlay !== []) {
550                 foreach ($overlay as $data) {
568      * @param array $overlay
570     private function getBing(array $gmap, array $overlay): string  argument
579             $bbox = $this->calcBBOX($overlay, $gmap ['lat'], $gmap ['lon']);
594         if ($overlay !== []) {
596             foreach ($overlay as $data) {
619      * @param array $overlay
627     private function calcBBOX(array $overlay, float $lat, float $lon): array  argument
631         foreach ($overlay as $data) {