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Just compiled the android sample and tried just to add this row to the original code

mapControl.Map.Layers.Add( PointLayerSample.CreateRandomPointLayerWithLabel( new MemoryProvider( new Point( 10, 10 ) ) ) );

it result immediately on the run an "System.NotImplementedException: The method or operation is not implemented." in Mapsui.Rendering.OpenTK in PlatformLabelBitmap.cs

Probably it is an issue related to the libraries, please - note which libraries You are using into the samples for android. ( currently I am using the nuget version of MapsUI )

is there some specific source for OpenTK which i shall use for Android ?.

See discussion here:
https://mapsui.codeplex.com/discussions/554838

The _retries dictionary needs to be locked before it is accessed since it is accessed by multiple threads. An exception can be thrown at line 179 when it checks if a value is in the dictionary and then adds it. In between this check/add, if another thread adds the value this thread will fail when it tries to add it as well.

WPF. I'm trying to create a tool for the history of user movements on the map. The tool is signed up for an event ViewChanged of MapControl. But this event raising too much times while viewing the map and ViewChangedEventArgs does not contain information on whether the change is complete, such as method ViewChanged(bool changeEnd) of Map. It would be very nice if in the event there is a new property, announces the completion of changes or new event that raises at the end of changes.

Please add a support for Xamarin forms.

I found a rare bug ( maybe ) which occur when You transit from the map Activity to another activity trough creating an Intent in Android.
Once You finish the work with the new activity and return to the map activity - the screen is darkened, and the map control is dark.
If You touch on it - it resumes work and everything goes normal.
I found that if i force refresh trough call to exposed RefreshGraphics() in MapControl.cs on "protected override void OnPostResume()" in the map activity - the things goes well.
It is probably a lame approach, but it could help to solve the issue.

before: ( Mapsui.UI.Android.MapControl.cs )

        private void RefreshGraphics()
        {
            _refreshGraphics = true;
            Invalidate ();
        }

after: ( Mapsui.UI.Android.MapControl.cs )

        public void RefreshGraphics()
        {
            _refreshGraphics = true;
            Invalidate ();
        }

in Map Activity :

        protected override void OnPostResume()
        {
            base.OnPostResume();
            FindViewById<MapControl>(Resource.Id.mapcontrol).RefreshGraphics();
        }

I have some map images that were created using the WGS84 (EPSG:4326) projection. I see that I can set ILayer.CRS so that geometries will be tranformed appropriately if necessary, but I don't think this will be valid for images as the insides of the images need to be projected accordingly in a non-linear fashion instead of just the vertices.

I was wanting to change my main map and all layers to be EPSG:4326, but it appears the calculations within Mapsui.Viewport make it dependent on a Mercator projection. Is this correct? If not, how do I create a WGS84 viewport?

Thanks

At the moment Mapsui.Geometries does not have access to code annotations. Has any work on it started, or do you have plan to put separate Annotations.cs to Mapsui.Geometries?

Could we make annotations internal, and use [assembly: InternalsVisibleTo("Mapsui.SomeSubProj")] to allow reuse without making annotations public? At the momemt ReSharper keeps suggesting using Mapsui.Annotations (as second option to Jetbrains.Annotations).

Mapsui/Brutile integration appears to be broken Brutile no longer contains GetTilesInView method in iTileSchema. Mapsui project will not currently compile without errors in its current state.

With the new WP8.1 platform it is possible to reuse much more code between Windows 8.1 and Windows Phone 8.1. Moving the W8 Rendering and UI to 'Portable for Universial Apps (-UA postfix) this should be possible with little modifications.

I have now added empty projects for this:

• Mapsui.Rendering.Xaml-UA
• Mapsui.UI.Xaml-UA

What needs to be done is:

• Move the W8 code to those projects.
• Fix the compile errors.
• Add a sample project for WP81 (I prefer to have no univeral project)
• Update existing W8 sample to use the new UA projet
• Remove the W8 projects

Is there a way to handle a marker click event and is there a ready tooltip for the markers on Android / iOS platform ?

Hi,
I have a suggestion for MapControl interface modification.
I need a possibility to virtually extend the margin that is used to detect left mouse click on a feature in a map.
Is there any reason for „16“ to magic number? Could it be a property (with public setter) which would have default value of 16?

MapControl:
private MouseInfoEventArgs GetMouseInfoEventArgs(Point mousePosition, IEnumerable layers)

var margin = 16 * Viewport.Resolution;

Steps to reproduce

1. Run Mapsui.Samples.Wpf
2. Select "Projected Point" demo
3. Zoom in to max level and move the map so that the WGS84 point is visible:
   
4. Rotate map using slider in the lower left corner

Actual outcome
The point changes its position, relative to map (i.e. streets, houses etc) - see the picture:

Expected outcome
The point should stay in the same place, relative to map.

Comments
I noticed that after performing full rotation, the point is again at the same point as before rotationg. I tried finding the cause of this behaviour, but without success...

Map settings are created with:

MapControl.Map.Transformation = new MinimalTransformation();
MapControl.Map.CRS = "EPSG:3857";

and point layer is created by this code:

return new Layer
            {
                DataSource = new MemoryProvider(new Point(4.643331, 52.433489)) { CRS = "EPSG:4326" },
                Name = "WGS84 Point"
            };

I have class with geometry property and need Clone method. But I can not just call Geometry.Clone() (it raises error)

Maybe Geometry.Clone() method must be marked as virtual?

I was told you need FrameBuffer Objects (FBO) for this.

I've noticed a bug with the LineString sample when using iOS. The bug draws a black background on the whole region that lines cross. Image below will demonstrate the issue.

Relevant code (taken from samples)

public void AddLineString()
{
    var style = new VectorStyle
    {
        Fill = null,
        Outline = null,
        Line = { Color = Mapsui.Styles.Color.Red, Width = 4 }
    };

    mapControl.Map.Layers.Add (CreateLineStringLayer (style));
}

public static ILayer CreateLineStringLayer(IStyle style = null)
{
    return new MemoryLayer
    {
        DataSource = new MemoryProvider(
            new[] { new LineString(new[]
                {
                    new Mapsui.Geometries.Point(0, 0), 
                    new Mapsui.Geometries.Point(10000, 10000),
                    new Mapsui.Geometries.Point(10000, 0),
                    new Mapsui.Geometries.Point(0, 10000),
                    new Mapsui.Geometries.Point(100000, 100000),
                    new Mapsui.Geometries.Point(100000, 0),
                    new Mapsui.Geometries.Point(0, 100000),
                    new Mapsui.Geometries.Point(1000000, 1000000),
                    new Mapsui.Geometries.Point(1000000, 0),
                    new Mapsui.Geometries.Point(0, 1000000),
                    new Mapsui.Geometries.Point(10000000, 10000000),
                    new Mapsui.Geometries.Point(10000000, 0),
                    new Mapsui.Geometries.Point(0, 10000000)
                }
            )}
        ),
        Name = "LineStringLayer",
        Style = style
    };
}

Please refresh the code to match the latest Apple requirements and Xamarin forms if possible, since Your map solution is just great, and We would very love to use.

Thanks in advance

So the user can override the default rasterizer.

Using mapsui with Xamarin for Android/iOS I came across the problem that the map does not update when adding/removing layers, nor do I seem to find a solution to update it manually.

I'm having a custom class which inherits from the ITileSource interface, the layer is not shown until I zoom/pan the map.

I tried to set the MapControl background to Transparent but without success...

Accordingly to this solution http://stackoverflow.com/questions/30787349/make-androidgameview-transparent
I set the AndroidGameView to transparent:

mapControl.SetZOrderOnTop(true);
mapControl.Holder.SetFormat(Format.Transparent);

But that was not enough, because the background is drawn by the MapControl itself...

So I had a look at the source code:
https://github.com/pauldendulk/Mapsui/blob/8b4ede5a555c5b137d6cdbce96a5d8d5191346de/Mapsui.UI.Android/MapControl.cs#L264

And tried to set the Alpha to 0 too...

mapControl.Map.BackColor.A = 0;

but the Alpha doesn't seems to be taken into account.

Does anyone have a solution to set MapControl to transparent?

The multi polygon has about 2870 nodes. Rendering is very slow and the UI (panning, zooming) stops working. Platform Mapsui Windows 8 Store App.

MapRenderer in Mapsui.Rendering.Xaml allows to draw points without images, just colored circles. GdiMapRenderer needs Bitmap to draw Point. How can I fix it?

Hi I want to create a blank map but with a valid return of coordinates
with WorldToScreen or ScreenToWorld

I want this extents and ESRI Code

    private const double DEFAULT_X_MIN = -180;
    private const double DEFAULT_X_MAX =  180;
    private const double DEFAULT_Y_MIN = -90;
    private const double DEFAULT_Y_MAX =  90;
    private const int WGSG84_ESRI_CODE = 4326;

This could be possible??

After upgrading to the newest NuGet package I've come across an issue with building Android in Xamarin. I can't build the application due to a missing assembly Mapsui.Rendering.OpenTK. I tried referencing to OpenTK but nothing changes the build issue. Full error:

/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets: Error: Exception while loading assemblies: System.IO.FileNotFoundException: Could not load assembly 'Mapsui.Rendering.OpenTK, Version=0.3.0.0, Culture=neutral, PublicKeyToken='. Perhaps it doesn't exist in the Mono for Android profile?
File name: 'Mapsui.Rendering.OpenTK.dll'
  at Xamarin.Android.Tuner.DirectoryAssemblyResolver.Resolve (Mono.Cecil.AssemblyNameReference reference, Mono.Cecil.ReaderParameters parameters) [0x00000] in <filename unknown>:0 
  at Xamarin.Android.Tuner.DirectoryAssemblyResolver.Resolve (Mono.Cecil.AssemblyNameReference reference) [0x00000] in <filename unknown>:0 
  at Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences (ICollection`1 assemblies, Mono.Cecil.AssemblyDefinition assembly, Boolean topLevel) [0x00000] in <filename unknown>:0 
  at Xamarin.Android.Tasks.ResolveAssemblies.Execute () [0x00000] in <filename unknown>:0

Hi,
I found a route by Windows.Services.Maps.MapRouteFinder and put coordinates of points to Feature with LineString. When I add layer with LineString, almost everything was ok. But when resolution is smaller than 7, path just disappears.
Thank you

Hi,
I'm trying to load a quite big mbtiles file (500MB) generated by tilemill into a map.
For this I'm using a MbTilesTileSource.
Loading the source goes quite well but if I add a new Tilelayer to the map containing the MbTilesTileSource the app hangs up.
I'm using MapUi on Windows WPF...
Would be nice if someone could help me. :)
Thanks!

I have an issue which seems to be mostly related to Xamarin, but I wonder what's causing it. Mapsui is referencing System.ServiceModel assembly, but only on iOS. The System.ServiceModel is part of Windows Communication Foundation (WCF) which requires higher licenses on Xamarin. I've tried to backtrack the origin of the reference but couldn't find anything. It suprises me that iOS requires this while Android builds fine without the reference.

Other projects came across the same issue (mvvmcross, xlabs) and resolved it by removing the reference or changing PCL profile.

https://github.com/XLabs/Xamarin-Forms-Labs/issues/336
MvvmCross/MvvmCross#394

When looking through the System.ServiceModel namespace (http://msdn.microsoft.com/en-us/library/system.servicemodel.aspx) I don't see anything that seems required in Mapsui. Any idea what's causing this reference?

Other geometries work properly. Tiles are not shown although the code involved is equal to WPF

Currently the visible backcolor is the color of the MapControl which is platform dependent.

Hi
For example, take a MemoryProvider with LineString geometry.
Add it to the map and let it render.
Then add a Point or change the coordinates of a existing in the linestring.
The rendered geometry won't update.
I guess the Problem probably lies within the MapRenderer (XamlRendering) in the RenderFeature method:
var renderedGeometry = feature.RenderedGeometry.ContainsKey(style) ? feature.RenderedGeometry[style] as UIElement : null;
if (renderedGeometry == null)
{
renderedGeometry = RenderGeometry(viewport, style, feature);
feature.RenderedGeometry[style] = renderedGeometry;
}
else
{
PositionGeometry(renderedGeometry, viewport, style, feature);
}
If the rendered geometry is not null, you only update the Position, but not any given changed data.
This problem must be relatively new, it worked before updating to the latest sources recently.

thanks for reporting and for diagnosing the problem. RenderedGeometry is used as a performance optimization but I had not thought of this scenario.

A workaround could be to call feature.RenderedGeometry.Clear() after the geometry is edited. I have to think about a proper solution.
philjay wrote Apr 12, 2013 at 10:33 AM [x]

There's another Problem with PositionGeometry.
When you zoom in, the Polygons get very blurry, when you zoom in too much, the polygon dissapears completely(this is even a Problem when using RenderGeometry). LineStrings won't be dsplayed at all using PositionGeometry.
pauldendulk wrote Apr 12, 2013 at 4:47 PM [x]

I created a new issue for that. Perhaps you can clarify there:
https://mapsui.codeplex.com/workitem/9195

Does the workaround work in your case?
philjay wrote Apr 12, 2013 at 9:38 PM [x]

Yes, I remove the RenderedGeometry to get the LineStrings updated. But since it has those blur problems, I hacked the renderer to always re-render LineStrings.

Hello.
I can not find an example of adding any of these features dynamically to a layer.
Please give me some directions.
Thanks in advance.

I am currently running over a really strange issue while trying the Android demo app.
The maps is all white.
( Android 5.1.1 / Huawei Honor X2 phone )

What could be causing this issue ?

Mapsui.Samples.Android cannot compile with Xamarin Studio, with showing this error:

/Users/kokogiko/Projects/Mapsui/Samples/Mapsui.Samples.Android/Properties/AndroidManifest.xml: Warning XA0101: @(Content) build action is not supported (XA0101) (Mapsui.Samples.Android)

How can I solve this problem?

Is there a proper way of limiting the boundaries of a map? I've been looking for ways to set the min and max zoom level that the user can scroll to. Currently users can zoom in and out for an unlimited amount.

Looking at the mapsui example used by brutile (http://brutiledemo.appspot.com/) the zoomlevel is limited until street level and also the min zoom is limited. The only approach I found now is hooking up to the Resolution propertychanged event of the mapcontrol:

Basemap.Map.PropertyChanged += (object sender, System.ComponentModel.PropertyChangedEventArgs w) => 
{
    if (w.PropertyName == "Resolution"){

        NotifyingViewport vw = (NotifyingViewport) sender;
        if (vw.Resolution > 20000)
        {
            vw.Resolution = 20000;
        }

        // TODO min resolution
    }
};

I assume this is not the proper way?

Another limitation that would be interesting is setting the max extent too (so users can't scroll of the map at the sides). Currently I'm not getting further than hooking up to the touch event of the mapcontrol which works very bugged (as I'm restoring view after scrolling of the side instead limiting it before)

Basemap.Touch += (object sender, TouchEventArgs h) => {
    BoundingBox world = Basemap.Map.Envelope;
    BoundingBox view = Basemap.Map.Viewport.Extent;

    if (view.Left < world.Left){
        double diff = world.Left - view.Left;
        Basemap.Map.Viewport.Center.X += diff;
    }
    if (view.Right > world.Right){
        double diff = view.Right - world.Right;
        Basemap.Map.Viewport.Center.X -= diff;
    }
    if (view.Top > world.Top){
        double diff = world.Top - view.Top;
        Basemap.Map.Viewport.Center.Y += diff;
    }
    if (view.Bottom < world.Bottom){
        double diff = view.Bottom - world.Bottom;
        Basemap.Map.Viewport.Center.Y -= diff;
    }
};

The 'Layer' in LayerName is somewhat redundant because it is a member of ILayer.

Unfortunately this is a breaking change that most users will notice.

For the SharpMap project , this function is included in SharpMap.Extensions Component

reported by @kwesolowski
BruTile/BruTile#23

Hello, I want to ask specification of Mapsui in iOS/Android.

Does mapsui have, or can be hack, to handle map to rotate by multi-touch?
In iOS and Android.

I can't find such property in MapControl class...

I'm stuck in a project where I need to zoom to a specific extent. I have a boundingbox but it seems that I'm only allowed to zoom to a specific center/resolution, the extent/viewport seem to be access only. How can I implement zooming to a specific bounding box?

Something like this

ILMerge /t:library /internalize /out:Deploy/Mapsui.dll Mapsui.dll Newtonsoft.Json.dll

Discussed in this thread:
EasyNetQ/EasyNetQ#237

Hello.

I'm Xamarin Indie user, and I try to compile Mapsui.Sample.iOS, it shows

"Your app is using an assembly that requires Xamarin.iOS Business edition or higher."
"Your app is using the assembly 'System.ServiceModel.Web'."

Is System.ServiceModel.Web needed for iOS project?
If not so, please remove dependency for it, to compile with Indie edition.

I am somehow unable to create a working application.
My aim currently is to create a marker which having some label on top of it, and be able to move it ( if possible without destruction of the original ).
something as follow :

Please - add if possible some simple working example for Android / iOS providing such functionality.

Just wanted to check if a Polygon intersects a BoundingBox to find out that all of the intersects methods throw NotImplementedException.
Any plans to implement the methods for all of the Geometries, or can you recommend another library I could reference to do those more and less complex collision-checks?
comments

pauldendulk wrote Apr 19, 2013 at 3:06 PM [x]

This is long standing issue inherited from from the original SharpMap version it was ported from. They should be either implemented or removed.

You could try to use NTS for this:
http://nettopologysuite.googlecode.com/svn/trunk/
You need to convert the geometries though. And I think NTS supports only desktop and Silverlight. Hopefully it could be ported to PCL someday.
pauldendulk wrote Apr 21 at 10:20 PM [x]

There is now a PCL version of NTS. The plan is to replace the current geometries with NTS.

It would make versioning and releasing faster if common assembly version data will be stored in single file (and the same version can be then used in nuget).

Is something blocking such approach (like http://www.purecs.net/csharp/tips-and-trick-1/share-a-globalassemblyinfo-file-among-projects-in-a-solution)? I can draft some Pull Request.