1 files changed, 157 insertions, 0 deletions
diff --git a/app/javascript/helpers/routes_map.coffee b/app/javascript/helpers/routes_map.coffee
new file mode 100644
index 000000000..85def1390
--- /dev/null
+++ b/app/javascript/helpers/routes_map.coffee
@@ -0,0 +1,157 @@
+class RoutesMap
+  constructor: (@target)->
+    @initMap()
+    @area = []
+    @seenStopIds = []
+    @routes = {}
+
+  initMap: ->
+    @map = new ol.Map
+      target: @target,
+      layers:   [ new ol.layer.Tile(source: new ol.source.OSM()) ]
+      controls: [ new ol.control.ScaleLine(), new ol.control.Zoom(), new ol.control.ZoomSlider() ],
+      interactions: ol.interaction.defaults(zoom: true)
+      view: new ol.View()
+
+  addRoutes: (routes)->
+    for route in routes
+      @addRoute route
+
+  addRoute: (route)->
+    geoColPts = []
+    geoColLns = []
+    @routes[route.id] = route if route.id
+    stops = route.stops || route
+    geoColEdges = [
+      new ol.Feature({
+        geometry: new ol.geom.Point(ol.proj.fromLonLat([parseFloat(stops[0].longitude), parseFloat(stops[0].latitude)]))
+      }),
+      new ol.Feature({
+        geometry: new ol.geom.Point(ol.proj.fromLonLat([parseFloat(stops[stops.length - 1].longitude), parseFloat(stops[stops.length - 1].latitude)]))
+      })
+    ]
+    stops.forEach (stop, i) =>
+      if i < stops.length - 1
+        geoColLns.push new ol.Feature
+          geometry: new ol.geom.LineString([
+            ol.proj.fromLonLat([parseFloat(stops[i].longitude), parseFloat(stops[i].latitude)]),
+            ol.proj.fromLonLat([parseFloat(stops[i + 1].longitude), parseFloat(stops[i + 1].latitude)])
+          ])
+
+      geoColPts.push(new ol.Feature({
+        geometry: new ol.geom.Point(ol.proj.fromLonLat([parseFloat(stop.longitude), parseFloat(stop.latitude)]))
+      }))
+      unless @seenStopIds.indexOf(stop.stoparea_id) > 0
+        @area.push [parseFloat(stop.longitude), parseFloat(stop.latitude)]
+        @seenStopIds.push stop.stoparea_id
+
+    vectorPtsLayer = new ol.layer.Vector({
+      source: new ol.source.Vector({
+        features: geoColPts
+      }),
+      style: @defaultStyles(),
+      zIndex: 2
+    })
+    route.vectorPtsLayer = vectorPtsLayer if route.id
+    vectorEdgesLayer = new ol.layer.Vector({
+      source: new ol.source.Vector({
+        features: geoColEdges
+      }),
+      style: @edgeStyles(),
+      zIndex: 3
+    })
+    route.vectorEdgesLayer = vectorEdgesLayer if route.id
+    vectorLnsLayer = new ol.layer.Vector({
+      source: new ol.source.Vector({
+        features: geoColLns
+      }),
+      style: [@lineStyle()],
+      zIndex: 1
+    })
+    route.vectorLnsLayer = vectorLnsLayer if route.id
+    @map.addLayer vectorPtsLayer
+    @map.addLayer vectorEdgesLayer
+    @map.addLayer vectorLnsLayer
+
+  lineStyle: (highlighted=false)->
+    new ol.style.Style
+      stroke: new ol.style.Stroke
+        color: if highlighted then "#ed7f00" else '#007fbb'
+        width: 3
+
+  edgeStyles: (highlighted=false)->
+    new ol.style.Style
+      image: new ol.style.Circle
+        radius: 5
+        stroke: new ol.style.Stroke
+          color: if highlighted then "#ed7f00" else '#007fbb'
+          width: 2
+        fill: new ol.style.Fill
+          color: if highlighted then "#ed7f00" else '#007fbb'
+          width: 2
+
+  defaultStyles: (highlighted=false)->
+    new ol.style.Style
+      image: new ol.style.Circle
+        radius: 4
+        stroke: new ol.style.Stroke
+          color: if highlighted then "#ed7f00" else '#007fbb'
+          width: 2
+        fill: new ol.style.Fill
+          color: '#ffffff'
+          width: 2
+
+  addRoutesLabels: ->
+    labelsContainer = $("<ul class='routes-labels'></ul>")
+    labelsContainer.appendTo $("##{@target}")
+    @vectorPtsLayer = null
+    @vectorEdgesLayer = null
+    @vectorLnsLayer = null
+    Object.keys(@routes).forEach (id)=>
+      route = @routes[id]
+      label = $("<li>#{route.name}</ul>")
+      label.appendTo labelsContainer
+      label.mouseleave =>
+        route.vectorPtsLayer.setStyle @defaultStyles(false)
+        route.vectorEdgesLayer.setStyle @edgeStyles(false)
+        route.vectorLnsLayer.setStyle @lineStyle(false)
+        route.vectorPtsLayer.setZIndex 2
+        route.vectorEdgesLayer.setZIndex 3
+        route.vectorLnsLayer.setZIndex 1
+        @fitZoom()
+      label.mouseenter =>
+        route.vectorPtsLayer.setStyle @defaultStyles(true)
+        route.vectorEdgesLayer.setStyle @edgeStyles(true)
+        route.vectorLnsLayer.setStyle @lineStyle(true)
+        route.vectorPtsLayer.setZIndex 11
+        route.vectorEdgesLayer.setZIndex 12
+        route.vectorLnsLayer.setZIndex 10
+        @fitZoom(route)
+
+  fitZoom: (route)->
+    if route
+      area = []
+      route.stops.forEach (stop, i) =>
+        area.push [parseFloat(stop.longitude), parseFloat(stop.latitude)]
+    else
+      area = @area
+    boundaries = ol.extent.applyTransform(
+      ol.extent.boundingExtent(area), ol.proj.getTransform('EPSG:4326', 'EPSG:3857')
+    )
+    @map.getView().fit boundaries, @map.getSize()
+    tooCloseToBounds = false
+    mapBoundaries = @map.getView().calculateExtent @map.getSize()
+    mapWidth = mapBoundaries[2] - mapBoundaries[0]
+    mapHeight = mapBoundaries[3] - mapBoundaries[1]
+    marginSize = 0.1
+    heightMargin = marginSize * mapHeight
+    widthMargin = marginSize * mapWidth
+    tooCloseToBounds = tooCloseToBounds || (boundaries[0] - mapBoundaries[0]) < widthMargin
+    tooCloseToBounds = tooCloseToBounds || (mapBoundaries[2] - boundaries[2]) < widthMargin
+    tooCloseToBounds = tooCloseToBounds || (boundaries[1] - mapBoundaries[1]) < heightMargin
+    tooCloseToBounds = tooCloseToBounds || (mapBoundaries[3] - boundaries[3]) < heightMargin
+    if tooCloseToBounds
+      @map.getView().setZoom(@map.getView().getZoom() - 1)
+
+
+export default RoutesMap