FIXED! The problem was that I was using a global variable for paths and obviously this is just used by reference when initialising a polygon - so any change to it for one polygon affects all those previously created.
Making it a local MVCarray fixes it. On Feb 5, 1:18 pm, Dave <davidt...@gmail.com> wrote: > I am just porting from v2 to v3. Currently only working in Firefox > (http://boca.org.au/component/boca_birding_locations/sitelist/16), but > I have a problem in that I am drawing a set of markers (all fine) and > polygons, and I thought only the last polygon was being displayed. > Digging around in the data structures using Firebug it appears that > they are all being displayed - but with the same co-ordinates. Firebug > confirms they are all being created with different coordinates, so it > appears that somehow the last polygon created overwrites the paths of > all the earlier ones. > > The relevant JS code (called when I am parsing the XML file I > download) is: (polys is a global array to hold the polygons so I can > easily remove them all) > > /* > Function to add a polygon (or polyline if b_polygon is false) to the > map. > > We store a reference to the map in the polys array so that we can > easily clear all polygons > > The parameters are as for add_marker. > > Note we also set a marker in the centre of the polygon and retunr a > reference to that marker > */ > function > add_polygon(lat,lng,map,colour,text,text_colour,star_colour,polystring,b_polygon,title) > { > var poly=polys.length; > logit("POLY",poly,polystring); > // poly_points holds the lat/lng pairs > poly_points.clear(); > // parse the string to add the points to the array > var points=polystring.split(","); > // should validate the zoom level and number of points I suppose but > ignore for now > // Create the vertices of the polygon as LatLng points and add to the > poly_points array at the end > for (var i=0;i<points.length;i+=2) > { > var point=new > google.maps.LatLng(parseFloat(points[i]),parseFloat(points[i+1])); > // logit("POLY ",title,parseFloat(points[i]),parseFloat(points[i+1])) > poly_points.insertAt(poly_points.length, point); > } > // create the polygon or polyline using the path defined > if (b_polygon) > { > polys[poly] = new google.maps.Polygon({ > strokeWeight: 1, > fillColor: '#FFDEAD', > fillOpacity:0.1, > paths:poly_points > }); > } > else > { > polys[poly] = new google.maps.Polyline({ > strokeWeight: 1, > path:poly_points > }); > } > // and update the map with the polygon. > polys[poly].setMap(map); > // OK - now for the central marker > var marker = new StyledMarker({styleIcon:new > StyledIcon(StyledIconTypes.MARKER, > {color:colour,text:text}),position:new > google.maps.LatLng(lat,lng),title:title}); > marker.setMap(map); > return(marker); > > } > > -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to google-maps-js-api-v3@googlegroups.com. To unsubscribe from this group, send email to google-maps-js-api-v3+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
