Allows to auto hide dialogs attached to units behind the standard UI. This trigger requires to know the player's camera distance and angle of view to work correctly. Note that the map contains a lot of functions to work with vectors, you probably won't need all of them but some are used by the auto-hide function. This is the 3d model I use (perspective projection): This model projects a 3d point (game world) into a 2d plane (monitor 2d resolution), if the point is outside the 2d plane then...
