104         $overlay = $this->extractPoints($str_points);
112             $imgUrl .= $this->getGoogle($gmap, $overlay);
117                 $_firstimageID = $this->getStaticOSM($gmap, $overlay);
128                 $imgUrl .= $this->getAzure($gmap, $overlay) . "&.png";
146             $_firstimageID = $this->getStaticOSM($gmap, $overlay);
180         if ($overlay !== []) {
181             foreach ($overlay as $data) {
313         $overlay = [];
327             $overlay [] = [$lat, $lon, $text, $angle, $opacity, $img];
329         return $overlay;
336      * @param array $overlay
338     private function getGoogle(array $gmap, array $overlay): string  argument
364         if ($overlay !== []) {
366             foreach ($overlay as $data) {
385      * @param array $overlay
449      * @param array $overlay
454     private function getStaticOSM(array $gmap, array $overlay)  argument
473             if ($overlay !== []) {
474                 foreach ($overlay as $data) {
549             if ($overlay !== []) {
552                 foreach ($overlay as $data) {
570      * @param array $overlay
575     private function getAzure(array $gmap, array $overlay): string  argument
585             $bbox = $this->calcBBOX($overlay, $gmap ['lat'], $gmap ['lon']);
593         if ($overlay !== []) {
596             foreach ($overlay as $data) {
616      * @param array $overlay
624     private function calcBBOX(array $overlay, float $lat, float $lon): array  argument
628         foreach ($overlay as $data) {