/// <summary>
/// Initialize this instance.
/// </summary>
public void Initialize()
{
this.BackgroundColor = UIColor.White;
var panGesture = new UIPanGestureRecognizer(Pan);
this.AddGestureRecognizer(panGesture);
var pinchGesture = new UIPinchGestureRecognizer(Pinch);
this.AddGestureRecognizer(pinchGesture);
// // create the renderer
// _renderer = new MapRenderer<CGContextWrapper> (
// new CGContextRenderer());
//
// create the cache renderer.
_cacheRenderer = new MapRenderer <CGContextWrapper> (
new CGContextRenderer());
_cachedScene = new Scene2DSimple();
_cachedScene.BackColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
// create invalidation timer.
_render = true;
System.Threading.Timer timer = new System.Threading.Timer(InvalidateSimple,
null, 0, 50);
}
void mapControl1_MapMouseClick(MapControlEventArgs e)
{
if (_router != null)
{
var routerPoint = _router.Resolve(Vehicle.Car, e.Position);
if (routerPoint != null)
{
_points.Add(routerPoint);
_layerPrimitives.AddPoint(routerPoint.Location, 15, SimpleColor.FromKnownColor(KnownColor.Black).Value);
_layerPrimitives.AddPoint(routerPoint.Location, 7, SimpleColor.FromKnownColor(KnownColor.White).Value);
}
if (_points.Count > 1)
{
var tspRouter = new RouterTSPWrapper <RouterTSPAEXGenetic>(
new RouterTSPAEXGenetic(), _router);
var route = tspRouter.CalculateTSP(Vehicle.Car, _points.ToArray());
if (route != null)
{
_layerRoute.Clear();
_layerRoute.AddRoute(route);
}
}
}
}
/// <summary>
/// Builds the scene.
/// </summary>
/// <param name="map"></param>
/// <param name="zoomFactor"></param>
/// <param name="center"></param>
/// <param name="view"></param>
private void BuildScene(Map map, float zoomFactor, GeoCoordinate center, View2D view)
{
// build the boundingbox.
var viewBox = view.OuterBox;
var box = new GeoCoordinateBox(map.Projection.ToGeoCoordinates(viewBox.Min [0], viewBox.Min [1]),
map.Projection.ToGeoCoordinates(viewBox.Max [0], viewBox.Max [1]));
var zoomLevel = (int)map.Projection.ToZoomLevel(zoomFactor);
if (_lastBox != null && _lastBox.Contains(box) &&
zoomLevel == _lastZoom)
{
return;
}
_lastBox = box;
_lastZoom = zoomLevel;
// reset the scene.
if (_scene2DSimple == null)
{
_scene2DSimple = new Scene2DSimple();
}
_scene2DSimple.Clear();
// get from the index.
this.Scene.BackColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
lock (_sync) {
_index.Get(_scene2DSimple, view, zoomFactor);
}
}
/// <summary>
/// Initialize implementation from IMapView.
/// </summary>
/// <param name="mapLayout"></param>
void IMapViewSurface.Initialize(MapView mapLayout)
{
_mapView = mapLayout;
this.SetWillNotDraw(false);
this.MapMinZoomLevel = 10;
this.MapMaxZoomLevel = 20;
_renderer = new MapRenderer <global::Android.Graphics.Canvas>(
new CanvasRenderer2D());
// initialize the gesture detection.
this.SetOnTouchListener(this);
_scaleGestureDetector = new ScaleGestureDetector(
this.Context, this);
_rotateGestureDetector = new RotateGestureDetector(
this.Context, this);
_moveGestureDetector = new MoveGestureDetector(
this.Context, this);
_tagGestureDetector = new TapGestureDetector(
this.Context, this);
_makerLayer = new LayerPrimitives(
new WebMercator());
// initialize all the caching stuff.
_backgroundColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
_cacheRenderer = new MapRenderer <global::Android.Graphics.Canvas>(
new CanvasRenderer2D());
}
public void TestMapCSSWayRendering1()
{
// create the data source.
MemoryDataSource source = new MemoryDataSource(
Node.Create(1, 1, 1),
Node.Create(2, -1, -1),
Way.Create(1, new SimpleTagsCollection(Tag.Create("highway", "residential")), 1, 2));
// create CSS.
string css = "canvas { " +
"fill-color: white; " +
"} " +
"way { " +
" width: 2; " +
" color: black; " +
"} ";
// do the rendering.
Bitmap rendering = this.Render(source, css);
// check result.
Assert.AreEqual(SimpleColor.FromKnownColor(OsmSharp.UI.KnownColor.White).Value,
rendering.GetPixel(0, 99).ToArgb());
Assert.AreEqual(SimpleColor.FromKnownColor(OsmSharp.UI.KnownColor.White).Value,
rendering.GetPixel(99, 0).ToArgb());
for (int x = 0; x < 100; x++)
{
Assert.AreEqual(SimpleColor.FromKnownColor(OsmSharp.UI.KnownColor.Black).Value,
rendering.GetPixel(x, x).ToArgb());
}
}
/// <summary>
/// Initialize this instance.
/// </summary>
void Initialize(MapView mapLayout)
{
_mapLayout = mapLayout;
this.SetWillNotDraw(false);
this.MapMinZoomLevel = 10;
this.MapMaxZoomLevel = 20;
_renderer = new MapRenderer <global::Android.Graphics.Canvas>(
new CanvasRenderer2D());
// initialize the gesture detection.
_gestureDetector = new GestureDetector(
this);
_scaleGestureDetector = new ScaleGestureDetector(
this.Context, this);
this.SetOnTouchListener(this);
_makerLayer = new LayerPrimitives(
new WebMercator());
// initialize all the caching stuff.
//_previousCache = null;
_cacheRenderer = new MapRenderer <global::Android.Graphics.Canvas>(
new CanvasRenderer2D());
_scene = new Scene2DSimple();
_scene.BackColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
System.Threading.Timer timer = new Timer(InvalidateSimple,
null, 0, 50);
}
/// <summary>
/// Initialize implementation from IMapView.
/// </summary>
/// <param name="mapLayout"></param>
void IMapViewSurface.Initialize(MapView mapLayout)
{
// create the Open GL 2D target.
_target = new OpenGLTarget2D();
this.SetRenderer(_target);
_mapView = mapLayout;
this.SetWillNotDraw(false);
this.MapMinZoomLevel = 10;
this.MapMaxZoomLevel = 20;
// create the renderer.
_renderer = new MapRenderer <OpenGLTarget2D>(
new OpenGLRenderer2D());
// initialize the gesture detection.
this.SetOnTouchListener(this);
_scaleGestureDetector = new ScaleGestureDetector(
this.Context, this);
_rotateGestureDetector = new RotateGestureDetector(
this.Context, this);
_moveGestureDetector = new MoveGestureDetector(
this.Context, this);
_tagGestureDetector = new TapGestureDetector(
this.Context, this);
_makerLayer = new LayerPrimitives(
new WebMercator());
_scene = new Scene2D(new WebMercator(), 16);
_scene.BackColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
}
/// <summary>
/// Creates a new OSM data layer.
/// </summary>
/// <param name="projection"></param>
public LayerGpx(IProjection projection)
{
_projection = projection;
this.Scene = new Scene2DSimple();
this.Scene.BackColor = SimpleColor.FromKnownColor(KnownColor.Transparent).Value;
}
/// <summary>
/// Adds a new OsmSharpRoute.
/// </summary>
/// <param name="route">Stream.</param>
public void AddRoute(Route route)
{
// set the default color if none is given.
var blue = SimpleColor.FromKnownColor(KnownColor.Blue);
var transparantBlue = SimpleColor.FromArgb(128, blue.R, blue.G, blue.B);
this.AddRoute(route, transparantBlue.Value);
}
/// <summary>
/// Returns the canvas color.
/// </summary>
/// <returns></returns>
public override SimpleColor GetCanvasColor()
{
if (_mapCSSFile != null &&
_mapCSSFile.CanvasFillColor.HasValue)
{ // instantiate the simple color.
return(new SimpleColor()
{
Value = _mapCSSFile.CanvasFillColor.Value
});
}
return(SimpleColor.FromKnownColor(KnownColor.Black));
}
public void TestCanvasSettingsCSS()
{
// create CSS.
string css = "canvas { " +
"fill-color: green; " +
"} ";
// create 'test' objects.
Node node1 = new Node();
node1.Id = 1;
node1.Latitude = 1;
node1.Longitude = 1;
Node node2 = new Node();
node2.Id = 2;
node2.Latitude = 2;
node2.Longitude = 2;
Way way = new Way();
way.Id = 1;
way.Nodes = new List <long>();
way.Nodes.Add(1);
way.Nodes.Add(2);
// create the datasource.
MemoryDataSource dataSource = new MemoryDataSource();
dataSource.AddNode(node1);
dataSource.AddNode(node2);
dataSource.AddWay(way);
// create the projection and scene objects.
var mercator = new WebMercator();
Scene2D scene = new Scene2D(new OsmSharp.Math.Geo.Projections.WebMercator(), 16);
// create the interpreter.
MapCSSInterpreter interpreter = new MapCSSInterpreter(css,
new MapCSSDictionaryImageSource());
interpreter.Translate(scene, mercator, dataSource, node1);
interpreter.Translate(scene, mercator, dataSource, node2);
interpreter.Translate(scene, mercator, dataSource, way);
// test the scene contents.
Assert.AreEqual(0, scene.Count);
Assert.AreEqual(SimpleColor.FromKnownColor(KnownColor.Green).Value, scene.BackColor);
}
public void TestSimpleColorKnownColor()
{
SimpleColor simpleColor = SimpleColor.FromKnownColor(KnownColor.White);
Assert.AreEqual(255, simpleColor.A);
Assert.AreEqual(255, simpleColor.R);
Assert.AreEqual(255, simpleColor.G);
Assert.AreEqual(255, simpleColor.B);
simpleColor = SimpleColor.FromKnownColor(KnownColor.Black);
Assert.AreEqual(255, simpleColor.A);
Assert.AreEqual(0, simpleColor.R);
Assert.AreEqual(0, simpleColor.G);
Assert.AreEqual(0, simpleColor.B);
}
public void TestEmptyCSS()
{
// create 'test' objects.
Node node1 = new Node();
node1.Id = 1;
node1.Latitude = 1;
node1.Longitude = 1;
Node node2 = new Node();
node2.Id = 2;
node2.Latitude = 2;
node2.Longitude = 2;
Way way = new Way();
way.Id = 1;
way.Nodes = new List <long>();
way.Nodes.Add(1);
way.Nodes.Add(2);
// create the datasource.
MemoryDataSource dataSource = new MemoryDataSource();
dataSource.AddNode(node1);
dataSource.AddNode(node2);
dataSource.AddWay(way);
// create the projection and scene objects.
var mercator = new WebMercator();
Scene2D scene = new Scene2DSimple();
// create the interpreter.
MapCSSInterpreter interpreter = new MapCSSInterpreter(string.Empty,
new MapCSSDictionaryImageSource());
interpreter.Translate(scene, mercator, dataSource, node1);
interpreter.Translate(scene, mercator, dataSource, node2);
interpreter.Translate(scene, mercator, dataSource, way);
// test the scene contents.
Assert.AreEqual(0, scene.Count);
Assert.AreEqual(SimpleColor.FromKnownColor(KnownColor.Black).Value, scene.BackColor);
}
public void TestSimpleColorFromHex()
{
SimpleColor color = SimpleColor.FromKnownColor(KnownColor.Red);
Assert.AreEqual(color.Value, SimpleColor.FromHex(color.HexRgb).Value);
color = SimpleColor.FromKnownColor(KnownColor.Blue);
Assert.AreEqual(color.Value, SimpleColor.FromHex(color.HexRgb).Value);
color = SimpleColor.FromKnownColor(KnownColor.Yellow);
Assert.AreEqual(color.Value, SimpleColor.FromHex(color.HexRgb).Value);
color = SimpleColor.FromKnownColor(KnownColor.Green);
Assert.AreEqual(color.Value, SimpleColor.FromHex(color.HexRgb).Value);
color = SimpleColor.FromKnownColor(KnownColor.White);
Assert.AreEqual(color.Value, SimpleColor.FromHex(color.HexRgb).Value);
}
/// <summary>
/// Initialize implementation from IMapView.
/// </summary>
/// <param name="mapLayout"></param>
void IMapViewSurface.Initialize(MapView mapLayout)
{
this.MapAllowPan = true;
this.MapAllowTilt = true;
this.MapAllowZoom = true;
// register default invalidation trigger.
(this as IInvalidatableMapSurface).RegisterListener(new DefaultTrigger(this));
_mapView = mapLayout;
this.SetWillNotDraw(false);
// this.SetWillNotCacheDrawing(true);
this.MapMinZoomLevel = 0;
this.MapMaxZoomLevel = 20;
// gets the system density.
_density = global::Android.Content.Res.Resources.System.DisplayMetrics.Density;
_bufferFactor = _density; // set default scale factor relative to density.
// create the renderer.
_renderer = new MapRenderer <global::Android.Graphics.Canvas>(
new CanvasRenderer2D(1));
// initialize the gesture detection.
this.SetOnTouchListener(this);
_scaleGestureDetector = new ScaleGestureDetector(
this.Context, this);
_rotateGestureDetector = new RotateGestureDetector(
this.Context, this);
_moveGestureDetector = new MoveGestureDetector(
this.Context, this);
_tagGestureDetector = new TapGestureDetector(
this.Context, this);
_makerLayer = new LayerPrimitives(
new WebMercator());
// initialize all the caching stuff.
_backgroundColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
_cacheRenderer = new MapRenderer <global::Android.Graphics.Canvas>(
new CanvasRenderer2D(1));
}
private void UserPositionChanged(object sender, PositionEventArgs e)
{
if (layerUser != null && IsShowingUser)
{
var center = new GeoCoordinate(e.Position.Latitude, e.Position.Longitude);
layerUser.Clear();
layerAccuracy.Clear();
if (IsShowingUserInCenter)
{
mapView.MapCenter = center;
}
layerAccuracy.AddPoint(center, 2.2f + mapView.Density * (float)e.Position.Accuracy, SimpleColor.FromArgb(32, 0, 0, 255).Value);
layerUser.AddPoint(center, mapView.Density * 2.2f, SimpleColor.FromKnownColor(KnownColor.Blue).Value);
layerUser.AddPoint(center, mapView.Density * 1.8f, SimpleColor.FromKnownColor(KnownColor.White).Value);
layerUser.AddPoint(center, mapView.Density * 1.2f, SimpleColor.FromKnownColor(KnownColor.Blue).Value);
}
}
/// <summary>
/// Initialize this instance.
/// </summary>
void Initialize()
{
// create the Open GL 2D target.
_target = new OpenGLTarget2D();
this.SetRenderer(_target);
// initialize the gesture detection.
_gestureDetector = new GestureDetector(
this);
_scaleGestureDetector = new ScaleGestureDetector(
this.Context, this);
this.SetOnTouchListener(this);
// create the renderer.
_renderer = new MapRenderer <OpenGLTarget2D>(
new OpenGLRenderer2D());
// initialize the scene.
_scene = new Scene2DSimple();
_scene.BackColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
}
/// <summary>
/// Raises the draw frame event.
/// </summary>
/// <param name="gl">Gl.</param>
public void OnDrawFrame(IGL10 gl)
{
lock (_triangles)
{
// Replace the current matrix with the identity matrix
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity(); // OpenGL docs
gl.GlOrthof(_left, _right, _bottom, _top, -1, 1);
SimpleColor color = SimpleColor.FromKnownColor(KnownColor.White);
gl.GlClearColor(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
gl.GlClear(GL10.GlColorBufferBit);
for (int idx = 0; idx < _triangles.Count; idx++)
{
gl.GlVertexPointer(3, GL10.GlFloat, 0, _triangles[idx].Vertices);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlColorPointer(4, GL10.GlUnsignedByte, 0, _triangles[idx].Colors);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, _triangles[idx].Count);
}
for (int idx = 0; idx < _lines.Count; idx++)
{
gl.GlVertexPointer(3, GL10.GlFloat, 0, _lines[idx].Vertices);
gl.GlEnableClientState(GL10.GlVertexArray);
color = new SimpleColor()
{
Value = _lines[idx].Color
};
gl.GlColor4f(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
gl.GlLineWidth(_lines[idx].Width);
gl.GlDrawArrays(GL10.GlLineStrip, 0, _lines[idx].Count);
}
}
}
public void TestMapCSSCanvasRendering()
{
// create the data source.
MemoryDataSource source = new MemoryDataSource();
// define the MapCSS file.
string css = "canvas { " +
"fill-color: green; " +
"} ";
// do the rendering.
Bitmap rendering = this.Render(source, css);
// check result.
for (int x = 0; x < 100; x++)
{
for (int y = 0; y < 100; y++)
{
Assert.AreEqual(SimpleColor.FromKnownColor(OsmSharp.UI.KnownColor.Green).Value,
rendering.GetPixel(x, y).ToArgb());
}
}
}
public async Task <Primitive2D> SearchPrimitiveAsync(GeoCoordinate coordinate, CancellationToken cancellationToken)
{
try
{
return(await Task.Run(() =>
{
var scene = CurrentScene;
var zoomFactor = (float)Map.Projection.ToZoomFactor(scene.Zoom);
var view = CreateView(CurrentScene);
var point = ToPixels(coordinate, scene);
var backColor = SimpleColor.FromKnownColor(KnownColor.Transparent).Value;
var objs = new List <Primitive2D>();
for (int i = 0; i < Map.LayerCount; i++)
{
if (cancellationToken.IsCancellationRequested)
{
return null;
}
var layer = Map[i];
if (layer.IsLayerVisibleFor((float)scene.Zoom))
{
objs.AddRange(layer.Get(zoomFactor, view));
}
}
objs.Reverse();
foreach (var obj in objs.Where(o => o != null && o.ToolTip != null))
{
if (cancellationToken.IsCancellationRequested)
{
return null;
}
var context = new RenderContext(SceneSize);
_renderer.SceneRenderer.Render(context, view, zoomFactor, new[] { obj }, backColor);
var image = context.BuildScene();
image.Freeze();
int bytePerPixel = (image.Format.BitsPerPixel + 7) / 8;
int stride = image.PixelWidth *bytePerPixel;
byte[] data = new byte[stride *image.PixelHeight];
image.CopyPixels(data, stride, 0);
//Pbgra32
var pixel = new byte[bytePerPixel];
var offset = stride * (int)point.Y + (int)point.X *bytePerPixel;
for (int i = 0; i < bytePerPixel; i++)
{
pixel[i] = data[offset + i];
}
if (pixel.Any(p => p != 0))
{
return obj;
}
}
return null;
}, cancellationToken));
}
catch (TaskCanceledException)
{
return(null);
}
}
/// <summary>
/// Initializes the View property.
/// </summary>
public override void LoadView()
{
base.LoadView();
// initialize OsmSharp native hooks.
Native.Initialize();
// enable the loggging.
OsmSharp.Logging.Log.Enable();
OsmSharp.Logging.Log.RegisterListener(new OsmSharp.iOS.UI.Log.ConsoleTraceListener());
// initialize map.
var map = new Map();
// add a tile layer.
map.AddLayer(new LayerTile(@"http://otile1.mqcdn.com/tiles/1.0.0/osm/{0}/{1}/{2}.png"));
// map.AddLayer(new LayerMBTile(SQLiteConnection.CreateFrom(
// Assembly.GetExecutingAssembly().GetManifestResourceStream(@"OsmSharp.iOS.UI.Sample.kempen.mbtiles"), "map")));
// add an online osm-data->mapCSS translation layer.
//map.AddLayer(new OsmLayer(dataSource, mapCSSInterpreter));
// add a pre-processed vector data file.
// var sceneStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(
// "OsmSharp.iOS.UI.Sample.default.map");
// map.AddLayer(new LayerScene(Scene2D.Deserialize(sceneStream, true)));
var primitivesLayer = new LayerPrimitives(map.Projection);
primitivesLayer.AddPoint(new GeoCoordinate(51.26371, 4.78601), 10,
SimpleColor.FromKnownColor(KnownColor.Blue).Value);
map.AddLayer(primitivesLayer);
// // define dummy from and to points.
var from = new GeoCoordinate(51.261203, 4.780760);
var to = new GeoCoordinate(51.267797, 4.801362);
//
// // deserialize the pre-processed graph.
// var routingSerializer = new CHEdgeDataDataSourceSerializer(false);
// TagsCollectionBase metaData = null;
// var graphStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(
// "OsmSharp.iOS.UI.Sample.kempen-big.osm.pbf.routing");
// var graphDeserialized = routingSerializer.Deserialize(graphStream, out metaData, true);
//
// // initialize router.
// _router = Router.CreateCHFrom(graphDeserialized, new CHRouter(), new OsmRoutingInterpreter());
//
// // resolve points.
// RouterPoint routerPoint1 = _router.Resolve(Vehicle.Car, from);
// RouterPoint routerPoint2 = _router.Resolve(Vehicle.Car, to);
//
// // calculate route.
// Route route = _router.Calculate(Vehicle.Car, routerPoint1, routerPoint2);
// RouteTracker routeTracker = new RouteTracker(route, new OsmRoutingInterpreter());
// _enumerator = route.GetRouteEnumerable(10).GetEnumerator();
//
// // add a router layer.
// _routeLayer = new LayerRoute(map.Projection);
// _routeLayer.AddRoute (route, SimpleColor.FromKnownColor(KnownColor.Blue, 125).Value, 12);
// map.AddLayer(_routeLayer);
// define the mapview.
_mapView = new MapView();
//_mapView.MapTapEvent += new MapViewEvents.MapTapEventDelegate(_mapView_MapTapEvent);
_mapView.MapAllowTilt = false;
_mapView.Map = map;
_mapView.MapMaxZoomLevel = 19;
_mapView.MapMinZoomLevel = 0;
_mapView.MapTilt = 0;
_mapView.MapCenter = new GeoCoordinate(51.26371, 4.78601);
_mapView.MapZoom = 18;
// add markers.
// _mapView.AddMarker (from);
_mapView.AddMarker(to);
// add control.
var textView = new UITextView();
textView.Text = "Hey, now there's text on top of the map! Yay!";
textView.BackgroundColor = UIColor.FromWhiteAlpha(0.5f, 0.5f);
var textViewControl = new MapControl <UITextView>(textView, from, MapControlAlignmentType.CenterBottom, 75, 75);
_mapView.AddControl(textViewControl);
// create the route tracker animator.
// _routeTrackerAnimator = new RouteTrackerAnimator(_mapView, routeTracker, 5, 17);
// // simulate a number of gps-location update along the calculated route.
// Timer timer = new Timer(250);
// timer.Elapsed += new ElapsedEventHandler(TimerHandler);
// timer.Start();
View = _mapView;
}
/// <summary>
/// Renders the current complete scene.
/// </summary>
void Render()
{
if (_cacheRenderer.IsRunning)
{
_cacheRenderer.CancelAndWait();
}
// make sure only on thread at the same time is using the renderer.
lock (_cacheRenderer) {
double extra = 1.25;
// build the layers list.
var layers = new List <ILayer> ();
for (int layerIdx = 0; layerIdx < this.Map.LayerCount; layerIdx++)
{
// get the layer.
layers.Add(this.Map[layerIdx]);
}
// add the internal layers.
layers.Add(_makerLayer);
// create a new cache if size has changed.
if (_canvasBitmap == null ||
_canvasBitmap.Width != (int)(this.Width * extra) ||
_canvasBitmap.Height != (int)(this.Height * extra))
{
// create a bitmap and render there.
_canvasBitmap = global::Android.Graphics.Bitmap.CreateBitmap((int)(this.Width * extra),
(int)(this.Height * extra),
global::Android.Graphics.Bitmap.Config.Argb8888);
}
else
{
// clear the cache???
}
// create and reset the canvas.
global::Android.Graphics.Canvas canvas = new global::Android.Graphics.Canvas(_canvasBitmap);
canvas.DrawColor(new global::Android.Graphics.Color(
SimpleColor.FromKnownColor(KnownColor.Transparent).Value));
// create the view.
View2D view = _cacheRenderer.Create(canvas.Width, canvas.Height,
this.Map, (float)this.Map.Projection.ToZoomFactor(this.MapZoomLevel),
this.MapCenter, _invertX, _invertY);
long before = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
"Rendering Start");
// notify the map that the view has changed.
this.Map.ViewChanged((float)this.Map.Projection.ToZoomFactor(this.MapZoomLevel), this.MapCenter,
view);
long afterViewChanged = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
"View change took: {0}ms @ zoom level {1}",
(new TimeSpan(afterViewChanged - before).TotalMilliseconds), this.MapZoomLevel);
// add the current canvas to the scene.
double left = view.LeftTop [0];
double right = view.RightTop [0];
double top = view.LeftTop [1];
double bottom = view.LeftBottom [1];
uint canvasId = _scene.AddImage(-1, float.MinValue, float.MaxValue,
left, top, right, bottom, new byte[0], _canvasBitmap);
// does the rendering.
bool complete = _cacheRenderer.Render(canvas, layers, view);
long afterRendering = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
"Rendering took: {0}ms @ zoom level {1}",
(new TimeSpan(afterRendering - afterViewChanged).TotalMilliseconds), this.MapZoomLevel);
if (complete)
{ // there was no cancellation, the rendering completely finished.
// add the result to the scene cache.
lock (_scene) {
// if (_previousCache.HasValue) {
// _scene.Remove (_previousCache.Value);
// }
// _scene.Remove (canvasId);
//
// add the newly rendered image again.
_scene.Clear();
//_previousCache =
BoxF2D viewBox = view.OuterBox;
_scene.AddImage(0, float.MinValue, float.MaxValue,
viewBox.Min[0], viewBox.Min[1], viewBox.Max[0], viewBox.Max[1], new byte[0], _canvasBitmap);
// switch cache and canvas to prevent re-allocation of bitmaps.
global::Android.Graphics.Bitmap newCanvas = _cache;
_cache = _canvasBitmap;
_canvasBitmap = newCanvas;
}
}
this.PostInvalidate();
long after = DateTime.Now.Ticks;
if (!complete)
{
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information, "Rendering in {0}ms after cancellation!",
new TimeSpan(after - before).TotalMilliseconds);
}
else
{
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information, "Rendering in {0}ms",
new TimeSpan(after - before).TotalMilliseconds);
}
}
}
/// <summary>
/// Translates a node.
/// </summary>
/// <param name="scene">The scene to add primitives to.</param>
/// <param name="projection">The projection used to convert the objects.</param>
/// <param name="node"></param>
private void TranslateNode(Scene2D scene, IProjection projection, CompleteNode node)
{
// build the rules.
IEnumerable <MapCSSRuleProperties> rules =
this.BuildRules(new MapCSSObject(node));
// interpret the results.
foreach (var rule in rules)
{
int zIndex;
if (!rule.TryGetProperty <int>("zIndex", out zIndex))
{
zIndex = 0;
}
float minZoom = (float)projection.ToZoomFactor(rule.MinZoom);
float maxZoom = (float)projection.ToZoomFactor(rule.MaxZoom);
uint?pointId = null;
int color;
if (rule.TryGetProperty <int>("color", out color))
{
float width;
if (rule.TryGetProperty <float>("width", out width))
{
pointId = scene.AddPoint(projection.LongitudeToX(node.Coordinate.Longitude),
projection.LatitudeToY(node.Coordinate.Latitude));
scene.AddStylePoint(pointId.Value, this.CalculateSceneLayer(OffsetPoint, zIndex), minZoom, maxZoom, color, width);
}
else
{
pointId = scene.AddPoint(projection.LongitudeToX(node.Coordinate.Longitude),
projection.LatitudeToY(node.Coordinate.Latitude));
scene.AddStylePoint(pointId.Value, this.CalculateSceneLayer(OffsetPoint, zIndex), minZoom, maxZoom, color, 1);
}
}
byte[] iconImage;
if (rule.TryGetProperty("iconImage", out iconImage))
{
if (!pointId.HasValue)
{
pointId = scene.AddPoint(projection.LongitudeToX(node.Coordinate.Longitude),
projection.LatitudeToY(node.Coordinate.Latitude));
}
// an icon is to be drawn!
ushort imageId = scene.AddImage(iconImage);
scene.AddIcon(pointId.Value, this.CalculateSceneLayer(OffsetPoint, zIndex), minZoom, maxZoom, imageId);
}
string text;
if (rule.TryGetProperty("text", out text))
{
int textColor;
if (!rule.TryGetProperty("textColor", out textColor))
{
textColor = SimpleColor.FromKnownColor(KnownColor.Black).Value;
}
int haloColor;
int?haloColorNullable = null;
if (rule.TryGetProperty("textHaloColor", out haloColor))
{
haloColorNullable = haloColor;
}
int haloRadius;
int?haloRadiusNullable = null;
if (rule.TryGetProperty("textHaloRadius", out haloRadius))
{
haloRadiusNullable = haloRadius;
}
int fontSize;
if (!rule.TryGetProperty("fontSize", out fontSize))
{
fontSize = 10;
}
string fontFamily;
if (!rule.TryGetProperty("fontFamily", out fontFamily))
{
fontFamily = "Arial"; // just some default font.
}
// a text is to be drawn.
string value;
if (node.Tags.TryGetValue(text, out value))
{
if (!pointId.HasValue)
{
pointId = scene.AddPoint(projection.LongitudeToX(node.Coordinate.Longitude),
projection.LatitudeToY(node.Coordinate.Latitude));
}
scene.AddText(pointId.Value, this.CalculateSceneLayer(OffsetPointText, zIndex), minZoom, maxZoom, fontSize, value, textColor,
haloColorNullable, haloRadiusNullable, fontFamily);
}
}
}
}
/// <summary>
/// Translates OSM objects into basic renderable primitives.
/// </summary>
/// <param name="scene">The scene to add primitives to.</param>
/// <param name="projection">The projection used to convert the objects.</param>
/// <param name="osmGeo">The osm object.</param>
/// <returns></returns>
public override void Translate(Scene2D scene, IProjection projection, CompleteOsmGeo osmGeo)
{
// set the scene backcolor.
scene.BackColor = this.GetCanvasColor().Value;
if (osmGeo == null)
{
return;
}
// store the object count.
int countBefore = scene.Count;
// interpret the osm-objects.
switch (osmGeo.Type)
{
case CompleteOsmType.Node:
this.TranslateNode(scene, projection, osmGeo as CompleteNode);
break;
case CompleteOsmType.Way:
this.TranslateWay(scene, projection, osmGeo as CompleteWay);
break;
case CompleteOsmType.Relation:
this.TranslateRelation(scene, projection, osmGeo as CompleteRelation);
break;
case CompleteOsmType.ChangeSet:
break;
default:
throw new ArgumentOutOfRangeException();
}
// interpret the osmGeo object and check if it makes up an area.
GeometryCollection collection = _geometryInterpreter.Interpret(osmGeo);
foreach (Geometry geometry in collection)
{
if (geometry is LineairRing)
{ // a simple lineair ring.
this.TranslateLineairRing(scene, projection, geometry as LineairRing);
}
else if (geometry is Polygon)
{ // a simple polygon.
this.TranslatePolygon(scene, projection, geometry as Polygon);
}
else if (geometry is MultiPolygon)
{ // a multipolygon.
this.TranslateMultiPolygon(scene, projection, geometry as MultiPolygon);
}
}
// check if any objects have been added to the scene.
if (scene.Count <= countBefore)
{ // no objects have been added. Apply default styles if needed.
if (osmGeo.Type == CompleteOsmType.Node &&
_mapCSSFile != null &&
_mapCSSFile.DefaultPoints)
{ // apply default points style.
CompleteNode node = (osmGeo as CompleteNode);
uint pointId = scene.AddPoint(projection.LongitudeToX(node.Coordinate.Longitude), projection.LatitudeToY(node.Coordinate.Latitude));
scene.AddStylePoint(pointId, this.CalculateSceneLayer(OffsetPoint, 0), float.MinValue, float.MaxValue,
SimpleColor.FromKnownColor(KnownColor.Black).Value, 2);
}
else if (osmGeo.Type == CompleteOsmType.Way &&
_mapCSSFile != null &&
_mapCSSFile.DefaultLines)
{ // apply default lines style.
CompleteWay way = (osmGeo as CompleteWay);
// get x/y.
double[] x = null, y = null;
if (x == null)
{ // pre-calculate x/y.
x = new double[way.Nodes.Count];
y = new double[way.Nodes.Count];
for (int idx = 0; idx < way.Nodes.Count; idx++)
{
x[idx] = projection.LongitudeToX(
way.Nodes[idx].Coordinate.Longitude);
y[idx] = projection.LatitudeToY(
way.Nodes[idx].Coordinate.Latitude);
}
// simplify.
if (x.Length > 2)
{
double[][] simplified = SimplifyCurve.Simplify(new double[][] { x, y }, 0.0001);
x = simplified[0];
y = simplified[1];
}
}
uint?points = scene.AddPoints(x, y);
if (points.HasValue)
{
scene.AddStyleLine(points.Value, this.CalculateSceneLayer(OffsetLine, 0), float.MinValue, float.MaxValue,
SimpleColor.FromKnownColor(KnownColor.Red).Value, 1, LineJoin.Round, null);
}
}
}
}
public void TestCanvasJOSMSettingsCSS()
{
// create CSS.
string css = "canvas { " +
"background-color: white; " +
"default-points: true; " + // adds default points for every node (color: black, size: 2).
"default-lines: true; " + // adds default lines for every way (color: red, width: 1).
"} ";
// create 'test' objects.
Node node1 = new Node();
node1.Id = 1;
node1.Latitude = 1;
node1.Longitude = 1;
Node node2 = new Node();
node2.Id = 2;
node2.Latitude = 2;
node2.Longitude = 2;
Way way = new Way();
way.Id = 1;
way.Nodes = new List <long>();
way.Nodes.Add(1);
way.Nodes.Add(2);
// create the datasource.
MemoryDataSource dataSource = new MemoryDataSource();
dataSource.AddNode(node1);
dataSource.AddNode(node2);
dataSource.AddWay(way);
// create the projection and scene objects.
var mercator = new WebMercator();
Scene2D scene = new Scene2D(new OsmSharp.Math.Geo.Projections.WebMercator(), 16);
// create the interpreter.
MapCSSInterpreter interpreter = new MapCSSInterpreter(css,
new MapCSSDictionaryImageSource());
interpreter.Translate(scene, mercator, dataSource, node1);
interpreter.Translate(scene, mercator, dataSource, node2);
interpreter.Translate(scene, mercator, dataSource, way);
// test the scene contents.
Assert.AreEqual(3, scene.Count);
Assert.AreEqual(SimpleColor.FromKnownColor(KnownColor.White).Value, scene.BackColor);
// test the scene point 1.
Primitive2D primitive = scene.Get(0);
Assert.IsNotNull(primitive);
Assert.IsInstanceOf <Primitive2D>(primitive);
Point2D pointObject = primitive as Point2D;
Assert.AreEqual(2, pointObject.Size);
Assert.AreEqual(SimpleColor.FromKnownColor(KnownColor.Black).Value, pointObject.Color);
Assert.AreEqual(mercator.LongitudeToX(1), pointObject.X);
Assert.AreEqual(mercator.LatitudeToY(1), pointObject.Y);
// test the scene point 2.
primitive = scene.Get(1);
Assert.IsNotNull(primitive);
Assert.IsInstanceOf <Point2D>(primitive);
pointObject = primitive as Point2D;
Assert.AreEqual(2, pointObject.Size);
Assert.AreEqual(SimpleColor.FromKnownColor(KnownColor.Black).Value, pointObject.Color);
Assert.AreEqual(mercator.LongitudeToX(2), pointObject.X);
Assert.AreEqual(mercator.LatitudeToY(2), pointObject.Y);
// test the scene line 2.
primitive = scene.Get(2);
Assert.IsNotNull(primitive);
Assert.IsInstanceOf <Line2D>(primitive);
Line2D line = primitive as Line2D;
Assert.AreEqual(1, line.Width);
Assert.AreEqual(SimpleColor.FromKnownColor(KnownColor.Red).Value, line.Color);
Assert.IsNotNull(line.X);
Assert.IsNotNull(line.Y);
Assert.AreEqual(2, line.X.Length);
Assert.AreEqual(2, line.Y.Length);
Assert.AreEqual(mercator.LongitudeToX(1), line.X[0]);
Assert.AreEqual(mercator.LatitudeToY(1), line.Y[0]);
Assert.AreEqual(mercator.LongitudeToX(2), line.X[1]);
Assert.AreEqual(mercator.LatitudeToY(2), line.Y[1]);
}
/// <summary>
/// Renders the current complete scene.
/// </summary>
void Render()
{
if (_cacheRenderer.IsRunning)
{
_cacheRenderer.CancelAndWait();
}
// make sure only on thread at the same time is using the renderer.
lock (_cacheRenderer) {
double extra = 1.25;
// build the layers list.
var layers = new List <ILayer> ();
for (int layerIdx = 0; layerIdx < this.Map.LayerCount; layerIdx++)
{
// get the layer.
layers.Add(this.Map[layerIdx]);
}
// add the internal layers.
layers.Add(_makerLayer);
// create a new cache if size has changed.
if (_canvasBitmap == null ||
_canvasBitmap.Width != (int)(this.Width * extra) ||
_canvasBitmap.Height != (int)(this.Height * extra))
{
// create a bitmap and render there.
_canvasBitmap = global::Android.Graphics.Bitmap.CreateBitmap((int)(this.Width * extra),
(int)(this.Height * extra),
global::Android.Graphics.Bitmap.Config.Argb8888);
}
else
{
// clear the cache???
}
// create and reset the canvas.
global::Android.Graphics.Canvas canvas = new global::Android.Graphics.Canvas(_canvasBitmap);
canvas.DrawColor(new global::Android.Graphics.Color(
SimpleColor.FromKnownColor(KnownColor.Transparent).Value));
// create the view.
double[] sceneCenter = this.Map.Projection.ToPixel(this.MapCenter.Latitude, this.MapCenter.Longitude);
float sceneZoomFactor = (float)this.Map.Projection.ToZoomFactor(this.MapZoom);
// create the view for this control.
View2D view = View2D.CreateFrom((float)sceneCenter[0], (float)sceneCenter[1],
this.Width * extra, this.Height * extra, sceneZoomFactor,
_invertX, _invertY, this.MapTilt);
long before = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
"Rendering Start");
// notify the map that the view has changed.
this.Map.ViewChanged((float)this.Map.Projection.ToZoomFactor(this.MapZoom), this.MapCenter,
view);
long afterViewChanged = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
"View change took: {0}ms @ zoom level {1}",
(new TimeSpan(afterViewChanged - before).TotalMilliseconds), this.MapZoom);
// add the current canvas to the scene.
_scene.AddImage(-1, float.MaxValue, float.MinValue, view.Rectangle,
new byte[0], _canvasBitmap);
// does the rendering.
bool complete = _cacheRenderer.Render(canvas, layers, view);
long afterRendering = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
"Rendering took: {0}ms @ zoom level {1}",
(new TimeSpan(afterRendering - afterViewChanged).TotalMilliseconds), this.MapZoom);
if (complete)
{ // there was no cancellation, the rendering completely finished.
// add the result to the scene cache.
lock (_scene) {
// add the newly rendered image again.
_scene.Clear();
_scene.AddImage(0, float.MinValue, float.MaxValue, view.Rectangle, new byte[0], _canvasBitmap);
// switch cache and canvas to prevent re-allocation of bitmaps.
global::Android.Graphics.Bitmap newCanvas = _cache;
_cache = _canvasBitmap;
_canvasBitmap = newCanvas;
}
}
this.PostInvalidate();
long after = DateTime.Now.Ticks;
}
}
/// <summary>
/// Raises the create event.
/// </summary>
/// <param name="bundle">Bundle.</param>
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// enable the logggin.
OsmSharp.Logging.Log.Enable();
OsmSharp.Logging.Log.RegisterListener(new OsmSharp.Android.UI.Log.LogTraceListener());
// initialize map.
var map = new Map();
// add a tile layer.
//map.AddLayer(new LayerTile(@"http://otile1.mqcdn.com/tiles/1.0.0/osm/{0}/{1}/{2}.png"));
// add an online osm-data->mapCSS translation layer.
//map.AddLayer(new OsmLayer(dataSource, mapCSSInterpreter));
// add a pre-processed vector data file.
var sceneStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(@"OsmSharp.Android.UI.Sample.default.map");
map.AddLayer(new LayerScene(Scene2D.Deserialize(sceneStream, true)));
// define dummy from and to points.
var from = new GeoCoordinate(51.261203, 4.780760);
var to = new GeoCoordinate(51.267797, 4.801362);
// deserialize the pre-processed graph.
var routingSerializer = new CHEdgeDataDataSourceSerializer(false);
TagsCollectionBase metaData = null;
var graphStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("OsmSharp.Android.UI.Sample.kempen-big.osm.pbf.routing");
var graphDeserialized = routingSerializer.Deserialize(graphStream, out metaData, true);
// initialize router.
_router = Router.CreateCHFrom(graphDeserialized, new CHRouter(), new OsmRoutingInterpreter());
// resolve points.
RouterPoint routerPoint1 = _router.Resolve(Vehicle.Car, from);
RouterPoint routerPoint2 = _router.Resolve(Vehicle.Car, to);
// calculate route.
Route route = _router.Calculate(Vehicle.Car, routerPoint1, routerPoint2);
RouteTracker routeTracker = new RouteTracker(route, new OsmRoutingInterpreter());
_enumerator = route.GetRouteEnumerable(10).GetEnumerator();
// add a router layer.
_routeLayer = new LayerRoute(map.Projection);
_routeLayer.AddRoute(route, SimpleColor.FromKnownColor(KnownColor.Blue, 125).Value, 12);
map.AddLayer(_routeLayer);
// define the mapview.
_mapView = new MapView(this, new MapViewSurface(this));
//_mapView = new MapView(this, new MapViewGLSurface(this));
//_mapView.MapTapEvent += new MapViewEvents.MapTapEventDelegate(_mapView_MapTapEvent);
_mapView.Map = map;
_mapView.MapMaxZoomLevel = 20;
_mapView.MapMinZoomLevel = 10;
_mapView.MapTilt = 0;
_mapView.MapCenter = new GeoCoordinate(51.26371, 4.78601);
_mapView.MapZoom = 18;
// add markers.
_mapView.AddMarker(from);
_mapView.AddMarker(to);
// initialize a text view to display routing instructions.
_textView = new TextView(this);
_textView.SetBackgroundColor(global::Android.Graphics.Color.White);
_textView.SetTextColor(global::Android.Graphics.Color.Black);
// add the mapview to the linear layout.
var layout = new LinearLayout(this);
layout.Orientation = Orientation.Vertical;
layout.AddView(_textView);
layout.AddView(_mapView);
// create the route tracker animator.
_routeTrackerAnimator = new RouteTrackerAnimator(_mapView, routeTracker, 5, 17);
// simulate a number of gps-location update along the calculated route.
Timer timer = new Timer(250);
timer.Elapsed += new ElapsedEventHandler(TimerHandler);
timer.Start();
SetContentView(layout);
}
/// <summary>
/// Renders the current complete scene.
/// </summary>
private void Render()
{
try
{
if (_renderingSuspended)
{ // no rendering when rendering is suspended.
return;
}
if (_cacheRenderer.IsRunning)
{ // cancel previous render.
_cacheRenderer.CancelAndWait();
}
// make sure only on thread at the same time is using the renderer.
lock (_cacheRenderer)
{
this.Map.ViewChangedCancel();
// build the layers list.
var layers = new List <Layer>();
for (int layerIdx = 0; layerIdx < this.Map.LayerCount; layerIdx++)
{ // get the layer.
if (this.Map[layerIdx].IsVisible)
{
layers.Add(this.Map[layerIdx]);
}
}
// add the internal layers.
layers.Add(_makerLayer);
if (this.SurfaceHeight == 0)
{ // the surface has no height yet. Impossible to render like this.
return;
}
// get old image if available.
NativeImage image = null;
if (_offScreenBuffer != null)
{ // get the native image from the off-screen buffer.
image = _offScreenBuffer.NativeImage as NativeImage;
}
// resize image if needed.
float sizeX = this.SurfaceWidth;
float sizeY = this.SurfaceHeight;
//if(this.MapAllowTilt)
//{ // when rotation is allowed make sure a square is rendered.
// sizeX = System.Math.Max(this.SurfaceWidth, this.SurfaceHeight);
// sizeY = System.Math.Max(this.SurfaceWidth, this.SurfaceHeight);
//}
// float size = System.Math.Max(this.SurfaceHeight, this.SurfaceWidth);
if (image == null ||
image.Image.Width != (int)(sizeX * _extra) ||
image.Image.Height != (int)(sizeY * _extra))
{ // create a bitmap and render there.
if (image != null)
{ // make sure to dispose the old image.
image.Dispose();
}
image = new NativeImage(global::Android.Graphics.Bitmap.CreateBitmap((int)(sizeX * _extra),
(int)(sizeY * _extra),
global::Android.Graphics.Bitmap.Config.Argb8888));
}
// create and reset the canvas.
using (var canvas = new global::Android.Graphics.Canvas(image.Image))
{
canvas.DrawColor(new global::Android.Graphics.Color(
SimpleColor.FromKnownColor(KnownColor.White).Value));
// create the view.
double[] sceneCenter = this.Map.Projection.ToPixel(this.MapCenter.Latitude, this.MapCenter.Longitude);
float mapZoom = this.MapZoom;
float sceneZoomFactor = (float)this.Map.Projection.ToZoomFactor(this.MapZoom);
// create the view for this control.
float scaledNormalWidth = image.Image.Width / _bufferFactor;
float scaledNormalHeight = image.Image.Height / _bufferFactor;
var view = View2D.CreateFrom((float)sceneCenter[0], (float)sceneCenter[1],
scaledNormalWidth * _extra, scaledNormalHeight * _extra, sceneZoomFactor,
_invertX, _invertY, this.MapTilt);
long before = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", TraceEventType.Information,
"Rendering Start");
// notify the map that the view has changed.
if (_previouslyChangedView == null ||
!_previouslyChangedView.Equals(view))
{ // report change once!
var normalView = View2D.CreateFrom((float)sceneCenter[0], (float)sceneCenter[1],
scaledNormalWidth, scaledNormalHeight, sceneZoomFactor,
_invertX, _invertY, this.MapTilt);
this.Map.ViewChanged((float)this.Map.Projection.ToZoomFactor(this.MapZoom), this.MapCenter,
normalView, view);
_previouslyChangedView = view;
long afterViewChanged = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", TraceEventType.Information,
"View change took: {0}ms @ zoom level {1}",
(new TimeSpan(afterViewChanged - before).TotalMilliseconds), this.MapZoom);
}
// does the rendering.
bool complete = _cacheRenderer.Render(canvas, layers, view, (float)this.Map.Projection.ToZoomFactor(this.MapZoom));
long afterRendering = DateTime.Now.Ticks;
OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", TraceEventType.Information,
"Rendering took: {0}ms @ zoom level {1} and {2}",
(new TimeSpan(afterRendering - before).TotalMilliseconds), this.MapZoom, this.MapCenter);
if (complete)
{ // there was no cancellation, the rendering completely finished.
// add the result to the scene cache.
// add the newly rendered image again.
if (_offScreenBuffer == null)
{ // create the offscreen buffer first.
_offScreenBuffer = new ImageTilted2D(view.Rectangle, image, float.MinValue, float.MaxValue);
}
else
{ // augment the previous buffer.
_offScreenBuffer.Bounds = view.Rectangle;
_offScreenBuffer.NativeImage = image;
}
var temp = _onScreenBuffer;
_onScreenBuffer = _offScreenBuffer;
_offScreenBuffer = temp;
}
long after = DateTime.Now.Ticks;
if (complete)
{ // report a successful render to listener.
_listener.NotifyRenderSuccess(view, mapZoom, (int)new TimeSpan(after - before).TotalMilliseconds);
}
}
}
// notify the the current surface of the new rendering.
this.PostInvalidate();
}
catch (Exception ex)
{ // exceptions can be thrown when the mapview is disposed while rendering.
// don't worry too much about these, the mapview is garbage anyway.
OsmSharp.Logging.Log.TraceEvent("MapViewSurface", TraceEventType.Critical,
string.Format("An unhandled exception occured:{0}", ex.ToString()));
}
}
private void DrawUserIcon(GeoCoordinate coord, double accuracy)
{
// If there no coordiantes, we have nothing to do
if (coord == null)
{
return;
}
if (layerAccuracy == null)
{
// Create layer for accuracy
layerAccuracy = new LayerPrimitives(map.Projection);
// Add new accuracy layer
map.AddLayer(layerAccuracy);
}
if (layerUser == null)
{
// Create layer for user icon
layerUser = new LayerPrimitives(map.Projection);
// Add layer for user icon
map.AddLayer(layerUser);
}
var repaintUserIcon = coord.Latitude != lastKnownPosition?.Latitude || coord.Longitude != lastKnownPosition?.Longitude;
var repaintAccuracy = true;
// Stop painting
layerAccuracy.Pause();
layerUser.Pause();
if (repaintAccuracy)
{
layerAccuracy.Clear();
}
if (repaintUserIcon)
{
layerUser.Clear();
}
if (IsShowingUserInCenter)
{
mapView.MapCenter = coord;
}
if (repaintAccuracy)
{
var size = 2.2f + mapView.Density * (float)accuracy;
layerAccuracy.AddPoint(coord, size > 40 ? 40 : size, SimpleColor.FromArgb(32, 0, 0, 255).Value);
}
if (repaintUserIcon)
{
layerUser.AddPoint(coord, mapView.Density * 2.2f, SimpleColor.FromKnownColor(KnownColor.Blue).Value);
layerUser.AddPoint(coord, mapView.Density * 1.8f, SimpleColor.FromKnownColor(KnownColor.White).Value);
layerUser.AddPoint(coord, mapView.Density * 1.2f, SimpleColor.FromKnownColor(KnownColor.Blue).Value);
}
layerAccuracy.Resume();
layerUser.Resume();
}
/// <summary>
/// Adds a new GPX.
/// </summary>
/// <param name="stream">Stream.</param>
public GeoCoordinateBox AddGpx(Stream stream)
{
GeoCoordinateBox bounds = null;
var gpxStream = new GpxGeoStreamSource(stream);
foreach (var geometry in gpxStream)
{
if (geometry is Point)
{ // add the point.
var point = (geometry as Point);
// get x/y.
var x = _projection.LongitudeToX(point.Coordinate.Longitude);
var y = _projection.LatitudeToY(point.Coordinate.Latitude);
// set the default color if none is given.
SimpleColor blue = SimpleColor.FromKnownColor(KnownColor.Blue);
SimpleColor transparantBlue = SimpleColor.FromArgb(128,
blue.R, blue.G, blue.B);
uint pointId = _scene.AddPoint(x, y);
_scene.AddStylePoint(pointId, 0, float.MinValue, float.MaxValue, transparantBlue.Value, 8);
if (bounds == null)
{ // create box.
bounds = point.Box;
}
else
{ // add to the current box.
bounds = bounds + point.Box;
}
}
else if (geometry is LineString)
{ // add the lineString.
var lineString = (geometry as LineString);
// get x/y.
var x = new double[lineString.Coordinates.Count];
var y = new double[lineString.Coordinates.Count];
for (int idx = 0; idx < lineString.Coordinates.Count; idx++)
{
x[idx] = _projection.LongitudeToX(
lineString.Coordinates[idx].Longitude);
y[idx] = _projection.LatitudeToY(
lineString.Coordinates[idx].Latitude);
}
// set the default color if none is given.
SimpleColor blue = SimpleColor.FromKnownColor(KnownColor.Blue);
SimpleColor transparantBlue = SimpleColor.FromArgb(128,
blue.R, blue.G, blue.B);
uint?pointsId = _scene.AddPoints(x, y);
if (pointsId.HasValue)
{
_scene.AddStyleLine(pointsId.Value, 0, float.MinValue, float.MaxValue, transparantBlue.Value, 8, Renderer.Primitives.LineJoin.Round, null);
if (bounds == null)
{ // create box.
bounds = lineString.Box;
}
else
{ // add to the current box.
bounds = bounds + lineString.Box;
}
}
}
}
return(bounds);
}