public void GpxReadGeometryv1_0()
{
// initialize the geometry source.
var gpxSource = new GpxFeatureStreamSource(
Assembly.GetExecutingAssembly().GetManifestResourceStream("OsmSharp.Test.data.test.v1.0.gpx"),
false);
// pull all the objects from the stream into the given collection.
var gpxCollection = new FeatureCollection(gpxSource);
var features = new List<Feature>(gpxCollection);
// test collection contents.
Assert.AreEqual(1, features.Count);
Assert.IsInstanceOf(typeof(LineString), features[0].Geometry);
Assert.AreEqual(424, (features[0].Geometry as LineString).Coordinates.Count);
}
/// <summary>
/// Adds a new GPX.
/// </summary>
/// <param name="stream">Stream.</param>
public GeoCoordinateBox AddGpx(Stream stream)
{
GeoCoordinateBox bounds = null;
var gpxStream = new GpxFeatureStreamSource(stream);
foreach (var feature in gpxStream)
{
if (feature.Geometry is Point)
{ // add the point.
var point = (feature.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.
var blue = SimpleColor.FromKnownColor(KnownColor.Blue);
var 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 (feature.Geometry is LineString)
{ // add the lineString.
var lineString = (feature.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.
var blue = SimpleColor.FromKnownColor(KnownColor.Blue);
var 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;
}
}
}
}
// update envelope.
if (_envelope == null)
{ // create initial envelope.
_envelope = bounds;
}
if (bounds != null)
{ // also include the current bounds.
_envelope = _envelope + bounds;
}
return bounds;
}