Creating Screen Overlays

Relevant Cesium Source

Relevant Google Earth Source (link)

var screenOverlay = ge.createScreenOverlay('');
                    screenOverlay.setIcon(ge.createIcon(''));
                    screenOverlay.getIcon().setHref("http://www.google.com/intl/en_ALL/images/logo.gif");

// Set the point inside the overlay that is used as the positioning
                    // anchor point.
                    screenOverlay.getOverlayXY().setXUnits(ge.UNITS_FRACTION);
                    screenOverlay.getOverlayXY().setYUnits(ge.UNITS_FRACTION);
                    screenOverlay.getOverlayXY().setX(.5);
                    screenOverlay.getOverlayXY().setY(.5);

// Set screen position in fractions.
                    screenOverlay.getScreenXY().setXUnits(ge.UNITS_FRACTION);
                    screenOverlay.getScreenXY().setYUnits(ge.UNITS_FRACTION);
                    screenOverlay.getScreenXY().setX(Math.random()); // Random x.
                    screenOverlay.getScreenXY().setY(Math.random()); // Random y.

// Rotate around object's center point.
                    screenOverlay.getRotationXY().setXUnits(ge.UNITS_FRACTION);
                    screenOverlay.getRotationXY().setYUnits(ge.UNITS_FRACTION);
                    screenOverlay.getRotationXY().setX(0.5);
                    screenOverlay.getRotationXY().setY(0.5);

// Set object's size in pixels.
                    screenOverlay.getSize().setXUnits(ge.UNITS_PIXELS);
                    screenOverlay.getSize().setYUnits(ge.UNITS_PIXELS);
                    screenOverlay.getSize().setX(300);
                    screenOverlay.getSize().setY(90);

// Rotate by a random number of degrees.
                    screenOverlay.setRotation(Math.random() * 360);

ge.getFeatures().appendChild(screenOverlay);