rename type MapZoom -> ZoomLevel

frontend/src/Main.elm

@@ -53,7 +53,7 @@ main =
 type alias Coord = { x: Float, y: Float }
 
 -- zoom level
-type alias MapZoom = Int
+type alias ZoomLevel = Int
 
 type alias TileNumber = { x: Int, y: Int }
 
@@ -86,20 +86,20 @@ reflect c = Coord -c.x -c.y
 translate base offset =
     { base | x = (base.x + offset.x), y = (base.y + offset.y) }
 
-translatePixels : Coord -> MapZoom -> (Int, Int) -> Coord
+translatePixels : Coord -> ZoomLevel -> (Int, Int) -> Coord
 translatePixels old z (x, y) = translate old (pixelsToCoord z (x, y))
 
 
-tileCovering : Coord -> MapZoom -> TileNumber
+tileCovering : Coord -> ZoomLevel -> TileNumber
 tileCovering c z =
     TileNumber (truncate (toFloat (2 ^ z) * c.x)) (truncate (toFloat (2 ^ z) * c.y))
 
-pixelFromCoord : Coord -> MapZoom -> (Int, Int)
+pixelFromCoord : Coord -> ZoomLevel -> (Int, Int)
 pixelFromCoord c z =
     let {x,y} = tileCovering c (z + 8)
     in (x,y)
 
-boundingTiles : Coord -> MapZoom -> Int -> Int -> (TileNumber, TileNumber)
+boundingTiles : Coord -> ZoomLevel -> Int -> Int -> (TileNumber, TileNumber)
 boundingTiles centre z width height =
     -- find the tiles needed to cover the area (`width` x `height`)
     -- about the point at `centre`
@@ -129,7 +129,7 @@ dragDelta d =
 type TrackState = Empty | Loading | Failure String | Present (List Point)
 type alias Model =
     { centre: Coord
-    , zoom: MapZoom
+    , zoom: ZoomLevel
     , drag: Drag
     , startTime : Int
     , duration : Int
@@ -223,7 +223,7 @@ newModel msg model =
 
 -- VIEW
 
-tileUrl : TileNumber -> MapZoom -> String
+tileUrl : TileNumber -> ZoomLevel -> String
 tileUrl {x,y} z =
     String.concat ["https://a.tile.openstreetmap.org",
                        "/", String.fromInt z,
@@ -290,7 +290,7 @@ powerView = measureView "power" "#994444" (.power >> Maybe.map toFloat)
 eleView = measureView "elevation" "#4444ee" (.pos >> .ele)
 
 
-trackView : Int -> Int -> MapZoom -> List Point -> Svg Msg
+trackView : Int -> Int -> ZoomLevel -> List Point -> Svg Msg
 trackView leftedge topedge zoom points =
     let plot p =
             let (x, y) = pixelFromCoord (toCoord p.pos.lat p.pos.lon) zoom