Updated mesh flattener sample (#1166)

Author: oppenheimera

samples/3d-mesh-flatten/index.html

@@ -18,14 +18,19 @@
             heading="-54.63577922139952"
             tilt="65.59195953953744"
             mode="SATELLITE">
+            <gmp-flattener path="40.707680607935245,-74.00310353377735,500 40.70829665151717,-74.00193595590612,500 40.7073748659931,-74.00122787224885,500 40.706738652153156,-74.00232125268805,500 40.70738164589913,-74.0028721484274,500"></gmp-flattener>
         </gmp-map-3d>
-        <gmp-flattener path="40.707680607935245,-74.00310353377735,500 40.70829665151717,-74.00193595590612,500 40.7073748659931,-74.00122787224885,500 40.706738652153156,-74.00232125268805,500 40.70738164589913,-74.0028721484274,500"></gmp-flattener>
 
         <button class="toggleButton" id="toggleButton" type="button">Disable Flattener</button>
 
-        <script
-            async
-            src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8&v=beta&libraries=maps3d"></script>
+        <script>
+            (g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})({
+            key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8",
+            v: "beta",
+            // Use the 'v' parameter to indicate the version to use (weekly, beta, alpha, etc.).
+            // Add other bootstrap parameters as needed, using camel case.
+            });
+        </script>
     </body>
 </html>
 <!-- [END maps_3d_mesh_flatten] -->