Creating Polygons

Relevant Cesium Source

Relevant Google Earth Source (link)

var polygonPlacemark = ge.createPlacemark('');
                    var polygon = ge.createPolygon('');
                    polygonPlacemark.setGeometry(polygon);
                    var outer = ge.createLinearRing('');
                    polygon.setOuterBoundary(outer);

// Square outer boundary.
                    var center = ge.getView().copyAsLookAt(ge.ALTITUDE_RELATIVE_TO_GROUND);
                    var coords = outer.getCoordinates();
                    var lat = center.getLatitude();
                    var lon = center.getLongitude();
                    coords.pushLatLngAlt(lat - .05, lon - .05, 0);
                    coords.pushLatLngAlt(lat - .05, lon + .05, 0);
                    coords.pushLatLngAlt(lat + .05, lon + .05, 0);
                    coords.pushLatLngAlt(lat + .05, lon - .05, 0);

// Another square as the inner boundary.  Note that we can create
                    // any number of inner boundaries.
                    var innerBoundary = ge.createLinearRing('');
                    polygon.getInnerBoundaries().appendChild(innerBoundary);
                    coords = innerBoundary.getCoordinates();
                    coords.pushLatLngAlt(lat - .02, lon - .02, 0);
                    coords.pushLatLngAlt(lat - .02, lon + .02, 0);
                    coords.pushLatLngAlt(lat + .02, lon + .02, 0);
                    coords.pushLatLngAlt(lat + .02, lon - .02, 0);

ge.getFeatures().appendChild(polygonPlacemark);