public void TestSimpleWebMercatorZoomLevel()
{
var mercator = new WebMercator();
for (int orignalLevel = 0; orignalLevel < 20; orignalLevel++)
{
double zoomFactor = mercator.ToZoomFactor(orignalLevel);
double zoomLevel = mercator.ToZoomLevel(zoomFactor);
Assert.AreEqual(orignalLevel, zoomLevel, 0.001);
}
}
public void TestSimpleWebMercator()
{
// TODO: stabalize the webmercator projection numerically for lower zoom levels (0-9).
var mercator = new WebMercator();
for (int zoomLevel = 10; zoomLevel <= 25; zoomLevel++)
{
var tile = Tile.CreateAroundLocation(new GeoCoordinate(0, 0), zoomLevel);
var topleft = mercator.ToPixel(tile.Box.TopLeft);
var bottomright = mercator.ToPixel(tile.Box.BottomRight);
var scaleFactor = mercator.ToZoomFactor(zoomLevel);
Assert.AreEqual(-256, (topleft[0] - bottomright[0]) * scaleFactor, 0.01);
Assert.AreEqual(-256, (topleft[1] - bottomright[1]) * scaleFactor, 0.01);
}
var coordinate = new GeoCoordinate(51.26337, 4.78739);
var projected = mercator.ToPixel(coordinate);
var reProjected = mercator.ToGeoCoordinates(projected[0], projected[1]);
Assert.AreEqual(coordinate.Longitude, reProjected.Longitude, 0.0001);
Assert.AreEqual(coordinate.Latitude, reProjected.Latitude, 0.0001);
}
/// <summary>
/// Tests rendering the given serialized scene.
/// </summary>
/// <param name="stream"></param>
/// <param name="box"></param>
/// <param name="testCount"></param>
public static void TestRenderScene(Stream stream, GeoCoordinateBox box, int testCount)
{
WebMercator projection = new WebMercator();
// build a map.
Map map = new Map();
IScene2DPrimitivesSource sceneSource = Scene2DLayered.Deserialize(stream, true);
LayerScene layerScene = map.AddLayerScene(sceneSource);
// build the target to render to.
Bitmap imageTarget = new Bitmap(TargetWidth, TargetHeight);
Graphics target = Graphics.FromImage(imageTarget);
target.SmoothingMode = SmoothingMode.HighQuality;
target.PixelOffsetMode = PixelOffsetMode.HighQuality;
target.CompositingQuality = CompositingQuality.HighQuality;
target.InterpolationMode = InterpolationMode.HighQualityBicubic;
MapRenderer<Graphics> mapRenderer = new MapRenderer<Graphics>(
new GraphicsRenderer2D());
// render the map.
PerformanceInfoConsumer performanceInfo = new PerformanceInfoConsumer("Scene2DLayeredRendering");
performanceInfo.Start();
performanceInfo.Report("Rendering {0} random images...", testCount);
while (testCount > 0)
{
// randomize view.
int zoom = OsmSharp.Math.Random.StaticRandomGenerator.Get().Generate(10) + 10;
GeoCoordinate center = box.GenerateRandomIn();
View2D view = mapRenderer.Create(TargetWidth, TargetHeight, map,
(float)projection.ToZoomFactor(zoom), center, false, true);
layerScene.ViewChanged(map, (float)projection.ToZoomFactor(zoom), center, view);
mapRenderer.Render(target, map, view);
if (WriteResults)
{
imageTarget.Save(Guid.NewGuid().ToString() + ".png", ImageFormat.Png);
}
testCount--;
}
performanceInfo.Stop();
}
public void Scene2DSimpleSerializeDeserializeTest()
{
// create the MapCSS image source.
var imageSource = new MapCSSDictionaryImageSource();
// load mapcss style interpreter.
var mapCSSInterpreter = new MapCSSInterpreter(
Assembly.GetExecutingAssembly().GetManifestResourceStream(
"OsmSharp.UI.Test.Unittests.Data.MapCSS.test.mapcss"),
imageSource);
// initialize the data source.
var xmlSource = new XmlOsmStreamSource(
Assembly.GetExecutingAssembly().GetManifestResourceStream(
"OsmSharp.UI.Test.Unittests.Data.test.osm"));
IEnumerable<OsmGeo> dataSource = xmlSource;
MemoryDataSource source = MemoryDataSource.CreateFrom(xmlSource);
// get data.
var scene = new Scene2D(new OsmSharp.Math.Geo.Projections.WebMercator(), 16);
var projection = new WebMercator();
GeoCoordinateBox box = null;
foreach (var osmGeo in dataSource)
{
ICompleteOsmGeo completeOsmGeo = null;
switch (osmGeo.Type)
{
case OsmGeoType.Node:
completeOsmGeo = osmGeo as Node;
if(completeOsmGeo.Tags == null)
{ // make sure every node has a tags collection.
completeOsmGeo.Tags = new TagsCollection();
}
break;
case OsmGeoType.Way:
completeOsmGeo = CompleteWay.CreateFrom(osmGeo as Way,
source);
break;
case OsmGeoType.Relation:
completeOsmGeo = CompleteRelation.CreateFrom(osmGeo as Relation,
source);
break;
}
// update box.
if (completeOsmGeo != null)
{
if (box == null) { box = completeOsmGeo.BoundingBox; }
else if (completeOsmGeo.BoundingBox != null) { box = box + completeOsmGeo.BoundingBox; }
}
// translate each object into scene object.
mapCSSInterpreter.Translate(scene, projection, source, osmGeo as OsmGeo);
}
// create the stream.
TagsCollectionBase metaTags = new TagsCollection();
metaTags.Add("SomeTestKey", "SomeTestValue");
var stream = new MemoryStream();
scene.Serialize(stream, true, metaTags);
// deserialize the stream.
metaTags = null;
stream.Seek(0, SeekOrigin.Begin);
IPrimitives2DSource sceneSource = Scene2D.Deserialize(stream, true, out metaTags);
// test meta tags.
Assert.IsTrue(metaTags.ContainsKeyValue("SomeTestKey", "SomeTestValue"));
if (box != null)
{
// query both and get the same results.
int counter = 100;
var rand = new Random();
while (counter > 0)
{
var queryBox = new GeoCoordinateBox(
box.GenerateRandomIn(rand),
box.GenerateRandomIn(rand));
var zoomFactor = (float)projection.ToZoomFactor(15);
View2D testView = View2D.CreateFromBounds(
projection.LatitudeToY(queryBox.MaxLat),
projection.LongitudeToX(queryBox.MinLon),
projection.LatitudeToY(queryBox.MinLat),
projection.LongitudeToX(queryBox.MaxLon));
var testScene = new Scene2D(new OsmSharp.Math.Geo.Projections.WebMercator(), 16);
IEnumerable<Primitive2D> primitives = sceneSource.Get(testView, zoomFactor);
// var resultIndex = new HashSet<Scene2DPrimitive>(testScene.Get(testView, zoomFactor));
// var resultReference = new HashSet<Scene2DPrimitive>(scene.Get(testView, zoomFactor));
//Assert.AreEqual(resultReference.Count, resultIndex.Count);
//foreach (var data in resultIndex)
//{
// Assert.IsTrue(resultReference.Contains(data));
//}
//foreach (var data in resultReference)
//{
// Assert.IsTrue(resultIndex.Contains(data));
//}
counter--;
}
}
}
