javascript - Darkened map around light area circle where marker resides in Google Map -

-

i'm trying darken of map except region inside circle, have marker. inside want map light. i'm trying play around setting lightness of map, not sure if that's correct approach? in code below , in fiddle can create dark map, can't figure out how make area inside circle light. see picture @ bottom example of i'm trying do.

<!doctype html>  <html xmlns="http://www.w3.org/1999/xhtml">    <head>    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />    <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>    <script type="text/javascript">      var $styles = [{        stylers: [{          lightness: -60        }]      }];              var mapoptions = {        zoom: "",        zoomcontrol: "",        center: "",        disabledefaultui: "",        draggable: "",        styles: $styles,        disabledoubleclickzoom: ""      }        var geocoder = new google.maps.geocoder();        function geocodeposition(pos) {        geocoder.geocode({          latlng: pos        }, function(responses) {          if (responses && responses.length > 0) {            updatemarkeraddress(responses[0].formatted_address);          } else {            updatemarkeraddress('cannot determine address @ location.');          }        });      }        function updatemarkerstatus(str) {        document.getelementbyid('markerstatus').innerhtml = str;      }        function updatemarkerposition(latlng) {        document.getelementbyid('info').innerhtml = [          latlng.lat(),          latlng.lng()        ].join(', ');      }        function updatemarkeraddress(str) {        document.getelementbyid('address').innerhtml = str;      }        function initialize() {        var latlng = new google.maps.latlng(37.9, -122);        var map = new google.maps.map(document.getelementbyid('mapcanvas'), {          zoom: 14,          center: latlng,          maptypeid: google.maps.maptypeid.roadmap,          styles: $styles        });        var marker = new google.maps.marker({          position: latlng,          title: 'point a',          map: map,          draggable: true        });          var circleoptions = {          //strokecolor: '#ff0000',          //strokeopacity: 0.8,          //strokeweight: 2,          //fillcolor: "", //'#ff0000',          //fillopacity: 0.35,          map: map,          center: new google.maps.latlng(37.9, -122),          radius: math.sqrt(5) * 100        };        var circle = new google.maps.circle(circleoptions);          marker.bindto('position', map, 'center');          // update current position info.        updatemarkerposition(latlng);        geocodeposition(latlng);          // add dragging event listeners.        google.maps.event.addlistener(marker, 'dragstart', function() {          updatemarkeraddress('dragging...');        });          google.maps.event.addlistener(marker, 'drag', function() {          updatemarkerstatus('dragging...');          updatemarkerposition(marker.getposition());        });          google.maps.event.addlistener(marker, 'dragend', function() {          updatemarkerstatus('drag ended');          geocodeposition(marker.getposition());        });      }         // onload handler fire off app.      google.maps.event.adddomlistener(window, 'load', initialize);    </script>  </head>    <body>    <style>      #mapcanvas {        width: 500px;        height: 400px;        float: left;      }      #infopanel {        float: left;        margin-left: 10px;      }      #infopanel div {        margin-bottom: 5px;      }    </style>      <div id="mapcanvas"></div>    <div id="infopanel">      <b>marker status:</b>      <div id="markerstatus"><i>click , drag marker.</i>      </div>      <b>current position:</b>      <div id="info"></div>      <b>closest matching address:</b>      <div id="address"></div>    </div>  </body>    </html>

i want map this.

enter image description here


Comments

Post a Comment

Popular posts from this blog

java - Custom OutputStreamAppender not run: LOGBACK: No context given for <MYAPPENDER> -

-
i wish write custom appender on basis of outputstreamappender . wrote following class package tests; import java.io.ioexception; import java.io.outputstream; import ch.qos.logback.core.outputstreamappender; public class myappender<e> extends outputstreamappender<e> { public myappender() { system.out.println("myappender created"); setoutputstream(new outputstream() { @override public void write(int b) throws ioexception { throw new unsupportedoperationexception(); } }); } } then wrote following runner: package tests; import org.slf4j.loggerfactory; import ch.qos.logback.classic.logger; public class runner { private static final logger log = (logger) loggerfactory.getlogger(runner.class); public static void main(string[] args) { //log.addappender(new myappender<iloggingevent>()); log.info("hello world"); } } finall...
Read more

java - UML - How would you draw a try catch in a sequence diagram? -

-
Image
is there standard way of drawing try catch sequence diagrams? i've made attempt based on this feel end result doesn't feel right. code diagram based around: public static void save () { try { filehandle filehandle = gdx.files.external(file); filehandle.writestring(boolean.tostring(constantshandler.soundenabled)+"\n", false); (int = 0; < 5; i++) { filehandle.writestring(integer.tostring(constantshandler.highscores[i])+"\n", true); } } catch (throwable e) { } } my attempt note: know still need add loop. that's ok. fragments meant show conditional control flow in sequence diagram. superstructures puts limitations on use of fragments (see pp. 467 of ss2.1.1). should use critical region try part above. , option catch . however, keep telling can take quite freedom in using uml. it's language , such changes in life time. long reader ge...
Read more

c++ - No viable overloaded operator for references a map -

-
i trying use map can make tag names reference number. when try , use it, in code error (6 in total every time reference map): src/main.cpp:25:45: error: no viable overloaded operator[] type 'std::map<std::string, std::string>' const char* idcs = node.child_value(tagmap[3]); this code: #include "pugi/pugixml.hpp" #include <iostream> #include <string> #include <map> int main() { pugi::xml_document doca, docb; std::map<std::string, pugi::xml_node> mapa, mapb; std::map<std::string, std::string> tagmap {{"1", "data"}, {"2", "entry"}, {"3", "id"}, {"4", "content"}}; if (!doca.load_file("a.xml") || !docb.load_file("b.xml")) { std::cout << "can't find input files"; return 1; } (auto& node: doca.child(tagmap[1]).children(tagmap[2])) { co...
Read more