/// <summary>
/// Updates the position of the specified marker
/// </summary>
/// <param name="marker">Marker</param>
/// <param name="tlx">Longitude of the left border of the map</param>
/// <param name="tly">Latitude of the top border of the map</param>
/// <param name="brx">Longitude of the right border of the map</param>
/// <param name="bry">Latitude of the bottom border of the map</param>
private void UpdateMarker(uGUICustomMarkerExample marker, double tlx, double tly, double brx, double bry)
{
double px = marker.lng;
double py = marker.lat;
if (px < tlx || px > brx || py < bry || py > tly)
{
marker.gameObject.SetActive(false);
return;
}
Vector2 screenPosition = control.GetScreenPosition(px, py);
RectTransform markerRectTransform = marker.transform as RectTransform;
if (!marker.gameObject.activeSelf)
{
marker.gameObject.SetActive(true);
}
screenPosition.y += markerRectTransform.rect.height / 2;
Vector2 point;
RectTransformUtility.ScreenPointToLocalPointInRectangle(markerRectTransform.parent as RectTransform, screenPosition, worldCamera, out point);
markerRectTransform.localPosition = point;
}
/// <summary>
/// This method is called to draw each marker
/// </summary>
/// <param name="marker">Marker</param>
/// <param name="tlx">Left longitude of the map</param>
/// <param name="tly">Top latitude of the map</param>
/// <param name="brx">Right longitude of the map</param>
/// <param name="bry">Bottom latitiude of the map</param>
private void DrawMarker(OnlineMapsMarker marker, double tlx, double tly, double brx, double bry)
{
// Get coordinates of the marker
double px, py;
marker.GetPosition(out px, out py);
// Get instance of marker from custom data
GameObject markerInstance = marker["instance"] as GameObject;
// If marker outside the map
if (px < tlx || px > brx || py < bry || py > tly)
{
// If there is an instance, destroy it
if (markerInstance != null)
{
OnlineMapsUtils.Destroy(markerInstance);
marker["instance"] = null;
}
return;
}
// If there is no instance, create it and put the reference to custom data
if (markerInstance == null)
{
marker["instance"] = markerInstance = Instantiate(instance.prefab);
(markerInstance.transform as RectTransform).SetParent(instance.container);
markerInstance.transform.localScale = Vector3.one;
}
// Convert geographic coordinates to screen position
Vector2 screenPosition = control.GetScreenPosition(px, py);
// Get rect transform of the instance
RectTransform markerRectTransform = markerInstance.transform as RectTransform;
// Add half height to align the marker to the bottom
screenPosition.y += markerRectTransform.rect.height / 2;
// Convert screen space to local space in the canvas
Vector2 point;
RectTransformUtility.ScreenPointToLocalPointInRectangle(markerRectTransform.parent as RectTransform, screenPosition, instance.worldCamera, out point);
// Set position of the marker instance
markerRectTransform.localPosition = point;
}