Rendering bug in Bing Maps MapPolyline su WP7 se zoom out?

Question

Sto avendo qualche problema con MapPolyline. Si rende in qualche modo una traccia GPS in modo non corretto se zoom out.

A bassi mapControl.ZoomLevel (ad esempio 9) alcune linee / bordi sono ancora elaborato ma non dovrebbero. Ecco alcuni screenshot per illustrare il comportamento strano.

http://img403.imageshack.us/g/capture4jz.png/

Immagine Descrizione:

1. La prima immagine viene ingrandito (ZoomLevel = 9) (prestare attenzione alla MapPolyline blu)
2. seconda immagine è ingrandita un po '(il MapPolyline è sempre lo stesso stesso -> errato)
3. terza immagine è di nuovo ingrandita ulteriormente (tuttavia la MapPolyline sembra ancora molto simile)
4. Ultima immagine:. Questo è ciò che l'attuale aspetto gps traccia come

Quindi la MapPolyline sta disegnando la traccia GPS in modo non corretto se mappa è rimpicciolita. Sembra che si ferma il ridimensionamento ad un certo punto e soggiorni tutti uguali a zoomlevels inferiori (9 - 15 == zoom out)

Forse ho fatto qualcosa di sbagliato? Qualcuno può dirmi come risolvere questo problema? Qualche soluzione?

Ecco una semplice applicazione di test per dimostrare questo comportamento strano (questo comportamento è lo stesso sul dispositivo e simulatore):

MainPage.xaml

    <!--ContentPanel - place additional content here-->
    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0" >
        <my:Map x:Name="mapControl" Margin="8" CredentialsProvider="{Binding CredentialsProvider}">
            <my:MapLayer>
                <my:MapPolyline x:Name="mapPolyline" 
                                Stroke="#FF2C76B7"
           Opacity="0.85"
        StrokeThickness="6" />
            </my:MapLayer>
        </my:Map>
        <Button Content="+" HorizontalAlignment="Left"  Height="86" VerticalAlignment="Bottom" Margin="108,0,0,51" Width="95" Name="zoomInButton"  Click="zoomInButton_Click" />
        <Button Content="-" HorizontalAlignment="Right" Height="86" VerticalAlignment="Bottom" Margin="0,0,101,51" Width="98" Name="zoomOutButton" Click="zoomOutButton_Click" />
    </Grid>

MainPage.xaml.cs

    // Constructor
    public MainPage()
    {
        InitializeComponent();

        this.DataContext = this;

        // load an actual trace
        var loadedTrace = LoadCarDrive();

        var locations = new LocationCollection();
        foreach (var item in loadedTrace)
        {
            locations.Add(item.Location);
        }

        mapPolyline.Locations = locations;

        // zoom to center
        mapControl.SetView(LocationRect.CreateLocationRect(locations));
        mapControl.ZoomLevel = 9;
    }

    private void zoomInButton_Click(object sender, RoutedEventArgs e)
    {
        mapControl.ZoomLevel += 1;
        Debug.WriteLine(mapControl.ZoomLevel);
    }

    private void zoomOutButton_Click(object sender, RoutedEventArgs e)
    {
        mapControl.ZoomLevel -= 1;
        Debug.WriteLine(mapControl.ZoomLevel);
    }

    #region Car Drive Trace
    public List<GeoPosition<GeoCoordinate>> LoadCarDrive()
    {
        return new List<GeoPosition<GeoCoordinate>>() {
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405647110000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24879119, 14.30983157, 264.5, 7, 8, 0, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405667080000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24881212, 14.30975438, 266.25, 9, 8, 3.08515646975006, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405686990000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2488539, 14.30977517, 264.450002034505, 9, 8, 2.7708502915673, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405707010000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24888582, 14.30973458, 264.833329942491, 7, 6, 2.622272942855, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405727010000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24890673, 14.30970928, 264.027773256655, 7, 6, 2.09121417243467, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405747020000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2489299, 14.30967342, 263.053696997372, 7, 6, 1.89013767966395, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405767030000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24893927, 14.30963082, 262.293819348999, 7, 6, 1.66950420129036, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405787040000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2489513, 14.30961666, 260.815840816629, 7, 6, 1.45526477188896, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405807090000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897547, 14.30958534, 260.136549319532, 7, 6, 1.42904734840548, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405827120000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2490056, 14.30956493, 259.084125976376, 7, 4, 1.48926924922331, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405847120000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24901793, 14.30954465, 258.240225098636, 7, 4, 1.8838781127322, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405927280000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24901616, 14.30950247, 257.208112955994, 7, 6, 1.42209719840891, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405947300000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24902166, 14.30943419, 256.616110650371, 9, 6, 1.37894394353935, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405967320000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24902592, 14.30939502, 256.30807656996, 12, 6, 1.19195039763596, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315405987320000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24906708, 14.30934571, 256.508064441282, 7, 6, 2.04223380763222, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406007340000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24907986, 14.30932245, 256.405378302576, 7, 6, 2.21050803017023, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406027360000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24908171, 14.30927428, 256.371151650296, 9, 6, 2.11644554209566, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406067370000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24906849, 14.30929253, 256.325514053301, 7, 6, 1.30317650495332, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406107390000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24908503, 14.3092208, 255.065555234533, 9, 8, 1.03139622772203, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406147410000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24912105, 14.30913114, 253.697027164955, 17, 12, 1.28256512364723, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406167450000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24913691, 14.30915501, 253.087527466496, 17, 12, 1.48256704150828, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406207450000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24910669, 14.30913564, 252.394849509312, 26, 12, 1.45368860226716, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406227460000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24905554, 14.30905891, 252.427454922925, 14, 12, 1.70982854209585, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406247480000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24904891, 14.30902087, 252.407432776241, 14, 12, 2.32817436513961, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406267490000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24903438, 14.30895531, 252.511633302066, 9, 8, 2.40899029224891, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406307520000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2490193, 14.30891254, 254.10635332493, 9, 8, 1.92159113286849, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406327520000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24899752, 14.30886584, 255.33932684116, 9, 8, 1.38514001477141, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406347530000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24899835, 14.30883893, 256.148560055363, 12, 8, 1.2548486272039, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406387570000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895525, 14.30878854, 257.595958229831, 9, 6, 1.33167435077218, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406407570000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24894308, 14.30881919, 257.748172761731, 7, 6, 1.3437967879493, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406427590000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24894424, 14.30879602, 258.148045698359, 7, 6, 1.40506752120999, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406447590000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897013, 14.3087708, 258.73206875102, 7, 6, 1.32722909233662, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406507630000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24899411, 14.30871161, 258.393367414116, 7, 6, 1.19050981731556, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406527630000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24900568, 14.30880985, 259.441816124056, 7, 6, 1.60071978622932, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406587660000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24901868, 14.30875422, 258.645063213896, 7, 6, 1.42179922641885, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406607680000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2490225, 14.3087142, 258.128955710307, 9, 8, 1.6648361142989, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406627690000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24899202, 14.30876327, 258.258006308068, 7, 6, 1.63091850786356, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406647700000, TimeSpan.FromHours(1)), new GeoCoordinate(48.248999, 14.30873814, 256.795654006125, 7, 6, 1.69687386722371, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406747760000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24898286, 14.30874518, 254.117882702387, 7, 6, 1.19924244305006, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406787770000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24900199, 14.30874282, 252.40450816716, 7, 8, 0, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406807800000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24901148, 14.30871393, 250.174130289849, 7, 12, 0.562022727939566, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406847810000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24902338, 14.30869189, 247.292875416659, 12, 12, 0.674589842740374, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406867820000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24902707, 14.30871843, 246.122333200998, 9, 12, 0.873256080158558, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406907840000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2490188, 14.30875003, 245.538406941563, 9, 12, 0.82098105319536, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406967870000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24903988, 14.30876066, 246.520244679682, 14, 12, 0.75138387232891, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315406987880000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24901843, 14.30869998, 247.552885908253, 14, 12, 1.28196277976357, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407007890000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24901495, 14.30869837, 247.82437482814, 12, 12, 1.07140934525889, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407067930000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24893342, 14.30866289, 245.792420245464, 9, 8, 1.48298498088654, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407087940000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24894735, 14.30866824, 243.872265024535, 9, 8, 0.870070550784878, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407107950000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895537, 14.3086449, 241.021559722161, 9, 12, 1.11347094540375, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407147970000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895027, 14.30862412, 238.031278984576, 12, 8, 0.773571842819805, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407167980000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24894213, 14.30857577, 235.850946235579, 14, 12, 1.12116766217648, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407188000000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895591, 14.30851958, 233.260739705546, 19, 12, 1.27163333307808, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407208000000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895305, 14.30858254, 230.737230681547, 12, 8, 1.90409780733048, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407228010000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24896214, 14.3085505, 228.832656795698, 14, 8, 1.72105403937988, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407248030000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24891651, 14.30852579, 227.723297860253, 12, 12, 2.15635087285783, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407268030000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24888497, 14.30851276, 226.018651551984, 14, 12, 1.91486801065635, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407308050000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24889868, 14.3084777, 224.780651838584, 17, 12, 1.7239841715139, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407328060000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2489161, 14.3084672, 223.699763727846, 19, 12, 1.19438627085672, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407348070000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24892424, 14.30845455, 222.860140556649, 14, 8, 0.846422498991796, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407388110000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897215, 14.30844792, 223.319966060326, 14, 8, 1.20716161411786, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407428130000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897508, 14.30842744, 224.160031469981, 19, 12, 0.932657766636434, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407448150000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24899233, 14.30847249, 225.093328441092, 14, 12, 1.13484005811991, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407488210000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2489731, 14.30852733, 226.251119970358, 14, 12, 1.0108183931221, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407508180000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895873, 14.3085864, 226.881478734806, 12, 8, 1.4631129974199, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407528190000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897776, 14.30857073, 227.710866235055, 12, 8, 1.83969601940619, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407548210000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24895268, 14.30856623, 228.097452392297, 14, 8, 1.80248844193688, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407568210000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24899134, 14.30857573, 228.902770841279, 9, 8, 1.87871250563877, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407588220000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24896963, 14.30857888, 229.666741077859, 12, 8, 1.57348661211614, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407608230000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897652, 14.30861496, 230.789833237369, 14, 8, 1.44588983852298, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407648250000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24896462, 14.30855057, 232.685526806248, 12, 12, 1.62641254715026, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407668260000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897762, 14.30855976, 233.658453347872, 14, 12, 1.30362718600298, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407708280000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897772, 14.30853848, 235.647995419212, 7, 8, 1.09568972753188, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315407908300000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24897772, 14.30853848, 235.647995419212, 7, 8, 0, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412290810000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24900281, 14.30853533, 238.398661578303, 7, 6, 0, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412330830000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24916174, 14.30887975, 240.382221033677, 9, 8, 2.0845116247323, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412370850000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24932241, 14.30944236, 242.993631606337, 9, 8, 5.21982023106023, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412390860000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24939839, 14.30973055, 244.458617546671, 7, 6, 8.64711029733088, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412410870000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24949181, 14.31003057, 246.884087120013, 7, 8, 10.8538398691813, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412430880000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24959673, 14.31033509, 248.180905624572, 9, 8, 11.8312, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412450890000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24965238, 14.31066123, 249.088334983872, 7, 8, 12.6028, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412470900000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24978463, 14.3109267, 249.723078168309, 9, 8, 12.5685068628947, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412490910000, TimeSpan.FromHours(1)), new GeoCoordinate(48.24994331, 14.3111727, 249.970473085232, 9, 8, 12.4484800654093, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412510920000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25010288, 14.3112952, 249.897850417847, 9, 6, 11.608293464152, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412550940000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2504877, 14.31153935, 251.089439133188, 7, 6, 10.8881333333333, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412570950000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25063711, 14.31161383, 251.629094482507, 7, 6, 9.91077352956136, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412590960000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25077697, 14.31164086, 251.939513239737, 9, 8, 9.08773349685669, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412610970000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25089215, 14.31165132, 251.956198505071, 12, 8, 7.79596221612368, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412630980000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25094566, 14.31162197, 252.531907983946, 7, 6, 5.73086814976673, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412650990000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25097386, 14.31163463, 252.696037530844, 7, 6, 3.77117962934291, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412671000000, TimeSpan.FromHours(1)), new GeoCoordinate(48.2510034, 14.31162491, 253.075981838263, 9, 6, 2.64702266191533, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412691010000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25102581, 14.31159456, 252.590673123036, 9, 6, 1.97770819383125, 0)),
         new GeoPosition<GeoCoordinate>(new DateTimeOffset(634315412731030000, TimeSpan.FromHours(1)), new GeoCoordinate(48.25103794, 14.31161438, 252.78888905611, 9, 6, 1.61398873787711, 0)),
     };
    }
    #endregion

Answer 1

Non credo che hai fatto di sbagliato nulla, il problema è (credo) c'è una grande quantità di dati in un piccolo vicinanze. Questo significa un sacco di angoli acuti, che con un abbastanza alto StrokeThickness questo tutte le combinazioni in un blob.

Una soluzione che rende questo un po 'più gradevoli all'occhio è quello di cambiare lo StrokeThickness in base al livello di zoom (zoom più la abbassare lo StrokeThickness) qualcosa di simile al seguente:

private void mapControl_ViewChangeEnd(object sender, MapEventArgs e)
    {
        if (mapControl.ZoomLevel > 17)
            mapPolyline.StrokeThickness = 6.00;
        else
            mapPolyline.StrokeThickness = 2.00;
    }

io credo che questo è qualcosa che deve essere esaminato in se.

Answer 2

In realtà io invece penso le bugie problema non con Microsoft, ma con un uso improprio degli strumenti. E 'normale pratica professionale per assottigliare i dati come uno zoom out. Ad esempio, la flotta di prodotti di monitoraggio web based della mia azienda può mostrare le azioni di un veicolo.

Per un viaggio di 48 ore, se si ingrandisce fuori ad un livello nazionale vi porterà circa diecimila campioni di posizione in vista. Si tratta di una quantità ridicola di dati da inviare al cliente, tanto più che i punti saranno offuscare le une nelle altre dieci a un pixel.

Quindi noi li cluster, con una soglia di prossimità che è una funzione della scala della mappa. Questo ci dà vantaggi pixel dieci a parte nei numeri ragionevoli, con eliminazione del rumore bonus. Ricordati di cluster utilizzando la vicinanza nel tempo, così come nello spazio, altrimenti si potrebbe ottenere raggruppamento inadeguato in percorsi là-e-indietro.