// Check if the direct flight to the mouse position is safe.
public static boolean isDirectFlightToMousePositionSafe(
    GlobeView globeView, Point mousePixelPosition, 
    double minimumClearanceToGround, boolean groundRelated)
{
    // Create a point for the calculation result
    Point groundPoint;

    // Check if the given minimum clearance is ground based
    if (groundRelated == true)
    {
        // Calculate the first point along the ray from the camera to the specified 
        // screen position with a height above ground that is less than or equal to 
        // height meters.
        groundPoint = globeView.pointAtGroundHeight(mousePixelPosition, minimumClearanceToGround);
    }
    else
    {
        // Calculate the first point along the ray from the camera to the specified 
        // screen position that is height meters above sea level.
        groundPoint = globeView.pointAtHeight(mousePixelPosition, minimumClearanceToGround);
    }

    // Check if the ground point is valid.
    // If no intersection is found, the coordinate [-1.0e99, -1.0e99, -1.0e99] is returned.
    return groundPoint.equals(new Point(-1.0e99, -1.0e99, -1.0e99));
}