Creating Line Strings

Relevant Cesium Source

Relevant Google Earth Source (link)

function addToLineString(lineString, lat, lng, latOffset, lngOffset) {
                        var altitude = 1.0; // give it some altitude
                        lineString.getCoordinates().pushLatLngAlt(lat + latOffset, lng + lngOffset, altitude);
                    }

var lookAt = ge.getView().copyAsLookAt(ge.ALTITUDE_RELATIVE_TO_GROUND);
                    var lat = lookAt.getLatitude();
                    var lng = lookAt.getLongitude();

// create the line string placemark
                    var lineStringPlacemark = ge.createPlacemark('');

// create the line string geometry
                    var lineString = ge.createLineString('');
                    lineStringPlacemark.setGeometry(lineString);

// tessellate (i.e. conform to ground elevation)
                    lineString.setTessellate(true);

// add the the points to the line string geometry
                    addToLineString(lineString, lat, lng, 0, 0, 0);
                    addToLineString(lineString, lat, lng, 1.5, .5, 0);
                    addToLineString(lineString, lat, lng, 0, 1.0, 0);
                    addToLineString(lineString, lat, lng, 1.5, 1.5, 0);
                    addToLineString(lineString, lat, lng, 0, 2.0, 0);
                    addToLineString(lineString, lat, lng, 1.5, 2.5, 0);
                    addToLineString(lineString, lat, lng, 0, 3.0, 0);
                    addToLineString(lineString, lat, lng, 1.5, 3.5, 0);
                    addToLineString(lineString, lat, lng, 0, 4.0, 0);
                    addToLineString(lineString, lat, lng, 1.5, 4.5, 0);

ge.getFeatures().appendChild(lineStringPlacemark);