Can't create more than one overlay in Seadragon
- by XGreen
Hi everyone,
I am trying to add overlays to a seadragon map I am making but for some reason that I can not figure our seadragon ignores all my overlays except the first one. Any help with this is much appreciated.
var viewer = null;
function init() {
Seadragon.Config.autoHideControls = false;
viewer = new Seadragon.Viewer("container");
viewer.addEventListener("open", addOverlays);
viewer.addControl(makeControl(), Seadragon.ControlAnchor.TOP_RIGHT);
$(viewer.getNavControl()).parent().parent().css({ 'top': 10, 'right': 10 });
viewer.openDzi("_assets/Mapdata/dzc_output.xml");
}
function makeControl() {
var control = document.createElement("a");
var controlText = document.createTextNode("");
control.href = "#"; // so browser shows it as link
control.className = "control";
control.appendChild(controlText);
Seadragon.Utils.addEvent(control, "click",
onControlClick);
return control;
}
function onControlClick(event) {
Seadragon.Utils.cancelEvent(event); // don't process link
if (!viewer.isOpen()) {
return;
}
// These are the coordinates of europe on this map
var x = 0.5398693914203284;
var y = 0.21155952391206562;
var z = 5;
viewer.viewport.panTo(new Seadragon.Point(x, y));
viewer.viewport.zoomTo(z);
viewer.viewport.ensureVisible();
}
function addOverlays(viewer) {
drawer = viewer.drawer;
var img = document.createElement("img");
img.src = "_assets/Images/pushpin.png";
$(img).addClass('pushPin');
var overlays = [
{ elmt: img, point: new Seadragon.Point(0.51, 0.22) },
{ elmt: img, point: new Seadragon.Point(0.20, 0.13) }
];
for (var i = 0; i < overlays.length; i++) {
drawer.addOverlay(overlays[i].elmt, overlays[i].point);
}
}
Seadragon.Utils.addEvent(window, "load", init);
