Hi,
I'm trying to load directions from waypoints on my map using
loadFromWaypoints. My waypoints are specified in an array. The
function does the job perfectly fine. However, I need to snap each
waypoint to the nearest street first and then load direction between
these new points.
I'm using something like this code:
var map = new GMap2(document.getElementById("map"));
map.setCenter(new GLatLng(53.7877, -2.9832),13);
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
var dirn = new GDirections();
var firstpoint = true;
var gmarkers = [];
var gpolys = [];
var dist = 0;
GEvent.addListener(map, "click", function(overlay,point) {
// == When the user clicks on a the map, get directiobns from
that point to itself ==
if (!overlay) {
if (firstpoint) {
dirn.loadFromWaypoints([point.toUrlValue(6),point.toUrlValue(6)],
{getPolyline:true});
} else {
dirn.loadFromWaypoints([gmarkers[gmarkers.length-1].getPoint(),point.toUrlValue(6)],
{getPolyline:true});
}
}
});
// == when the load event completes, plot the point on the
street ==
GEvent.addListener(dirn,"load", function() {
// snap to last vertex in the polyline
var n = dirn.getPolyline().getVertexCount();
var p=dirn.getPolyline().getVertex(n-1);
var marker=new GMarker(p);
map.addOverlay(marker);
// store the details
gmarkers.push(marker);
if (!firstpoint) {
map.addOverlay(dirn.getPolyline());
gpolys.push(dirn.getPolyline());
dist += dirn.getPolyline().Distance();
document.getElementById("distance").innerHTML="Path length:
"+(dist/1000).toFixed(2)+" km. "+(dist/1609.344).toFixed(2)+" miles.";
}
firstpoint = false;
});
GEvent.addListener(dirn,"error", function() {
GLog.write("Failed: "+dirn.getStatus().code);
});
which works fine as it is, but in my case points are defined in
advance, so the click event on map is not used in my case.
I'm using the loadFromWaypoints code in a loop, gets to the first
point but for the next point an error occurs saying gmarkers[...] is
null or not an object.
can anyone help me please.
thank you
--
You received this message because you are subscribed to the Google Groups
"Google Maps API" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-maps-api?hl=en.
