コード例 #1
0
        /// <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);
                    }
                }
            }
        }
コード例 #2
0
        /// <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);
                    }
                }
            }
        }
コード例 #3
0
        /// <summary>
        /// Merges objects from the given scene for the given zoom level.
        /// </summary>
        /// <param name="target"></param>
        /// <param name="source"></param>
        /// <param name="idx"></param>
        private void MergeObjects(Scene2D target, Scene2D source, int idx)
        {
            Dictionary<Scene2D.ScenePoints, Scene2DStylesSet> lines = new Dictionary<Scene2D.ScenePoints, Scene2DStylesSet>();
            Dictionary<PointF2D, HashSet<Scene2D.ScenePoints>> endpoints = new Dictionary<PointF2D, HashSet<Scene2D.ScenePoints>>();
            Dictionary<uint, SceneObject> sceneObjects = source.GetSceneObjectsAt(idx);
            foreach (var sceneObject in sceneObjects)
            {
                if (sceneObject.Value.Enum == SceneObjectType.LineObject)
                { // the scene object is a line object.
                    var sceneLineObject = sceneObject.Value as SceneLineObject;
                    Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineObject.GeoId);
                    Scene2DStylesSet stylesSet = null;
                    if (!lines.TryGetValue(scenePoints, out stylesSet))
                    { // create styles set.
                        stylesSet = new Scene2DStylesSet();
                        lines.Add(scenePoints, stylesSet);
                    }
                    stylesSet.AddStyleLine(sceneLineObject.StyleId);

                    //var sceneLineObject = (sceneObject.Value as SceneLineObject);
                    //Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineObject.GeoId);
                    //StyleLine styleLine = source.GetStyleLine(sceneLineObject.StyleId);

                    //uint? pointsId = target.AddPoints(scenePoints.X, scenePoints.Y);
                    //if (pointsId.HasValue)
                    //{
                    //    target.AddStyleLine(pointsId.Value, styleLine.Layer, styleLine.MinZoom, styleLine.MaxZoom,
                    //        styleLine.Color, styleLine.Width, styleLine.LineJoin, styleLine.Dashes);
                    //}
                }
                else if (sceneObject.Value.Enum == SceneObjectType.LineTextObject)
                {
                    var sceneLineTextObject = sceneObject.Value as SceneLineTextObject;
                    Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineTextObject.GeoId);
                    Scene2DStylesSet stylesSet = null;
                    if (!lines.TryGetValue(scenePoints, out stylesSet))
                    { // create styles set.
                        stylesSet = new Scene2DStylesSet();
                        lines.Add(scenePoints, stylesSet);
                    }
                    stylesSet.AddStyleLineText(sceneLineTextObject.StyleId, sceneLineTextObject.TextId);

                    //var sceneLineTextObject = (sceneObject.Value as SceneLineTextObject);
                    //Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineTextObject.GeoId);
                    //StyleText styleText = source.GetStyleText(sceneLineTextObject.StyleId);
                    //string text = source.GetText(sceneLineTextObject.TextId);

                    //uint? pointsId = target.AddPoints(scenePoints.X, scenePoints.Y);
                    //if (pointsId.HasValue)
                    //{
                    //    target.AddStyleLineText(pointsId.Value, styleText.Layer, styleText.MinZoom, styleText.MaxZoom,
                    //        styleText.Color, styleText.Size, text, styleText.Font, styleText.HaloColor, styleText.HaloRadius);
                    //}
                }
                else if (sceneObject.Value.Enum == SceneObjectType.IconObject)
                {
                    throw new NotSupportedException("Icons not yet supported!");
                    //var sceneIconObject = (sceneObject.Value as SceneIconObject);
                    //Scene2D.ScenePoint scenePoint = source.GetPoint(sceneIconObject.GeoId);
                    //source.GetStyleIcon(
                    //target.AddIcon(target.AddPoint(scenePoint.X, scenePoint.Y);
                }
                else if (sceneObject.Value.Enum == SceneObjectType.PointObject)
                {
                    var scenePointObject = (sceneObject.Value as ScenePointObject);
                    Scene2D.ScenePoint scenePoint = source.GetPoint(scenePointObject.GeoId);
                    StylePoint stylePoint = source.GetStylePoint(scenePointObject.StyleId);

                    target.AddStylePoint(target.AddPoint(scenePoint.X, scenePoint.Y), stylePoint.Layer, stylePoint.MinZoom, stylePoint.MaxZoom,
                        stylePoint.Color, stylePoint.Size);
                }
                else if (sceneObject.Value.Enum == SceneObjectType.PolygonObject)
                {
                    var scenePolygonObject = (sceneObject.Value as ScenePolygonObject);
                    Scene2D.ScenePoints scenePoints = source.GetPoints(sceneObject.Value.GeoId);
                    StylePolygon stylePolygon = source.GetStylePolygon(sceneObject.Value.StyleId);

                    uint? pointsId = target.AddPoints(scenePoints.X, scenePoints.Y);
                    if (pointsId.HasValue)
                    {
                        target.AddStylePolygon(pointsId.Value, stylePolygon.Layer, stylePolygon.MinZoom, stylePolygon.MaxZoom,
                            stylePolygon.Color, stylePolygon.Width, stylePolygon.Fill);
                    }
                }
                else if (sceneObject.Value.Enum == SceneObjectType.TextObject)
                {
                    var sceneTextObject = (sceneObject.Value as SceneTextObject);
                    Scene2D.ScenePoint scenePoint = source.GetPoint(sceneObject.Value.GeoId);
                    StyleText styleText = source.GetStyleText(sceneTextObject.StyleId);
                    string text = source.GetText(sceneTextObject.TextId);

                    target.AddText(target.AddPoint(scenePoint.X, scenePoint.Y), styleText.Layer, styleText.MinZoom, styleText.MaxZoom,
                        styleText.Size, text, styleText.Color, styleText.HaloColor, styleText.HaloRadius, styleText.Font);
                }
            }

            // loop until there are no more candidates.
            int totalLines = lines.Count;
            float latestProgress = 0;
            while (lines.Count > 0)
            {
                var line = lines.First();
                lines.Remove(line.Key);

                // report progress.
                float progress = (float)System.Math.Round((((double)(totalLines - lines.Count) / (double)totalLines) * 100));
                if (progress != latestProgress)
                {
                    OsmSharp.Logging.Log.TraceEvent("SceneSerializer", OsmSharp.Logging.TraceEventType.Information,
                        "Merging lines ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines);
                    latestProgress = progress;
                }

                // copy the coordinates to lists.
                double[] x = line.Key.X.Clone() as double[];
                double[] y = line.Key.Y.Clone() as double[];

                // find a matching line.
                int mergeCount = 1;
                Scene2D.ScenePoints found;
                MatchPosition foundPosition = this.FindMatch(lines, x, y, line.Value, out found);
                while (found != null)
                { // TODO: keep expanding and duplicating until not possible anymore.
                    // remove the found line.
                    lines.Remove(found);

                    // add the line.
                    int lengthBefore = x.Length;
                    Array.Resize(ref x, x.Length + found.X.Length - 1);
                    Array.Resize(ref y, y.Length + found.Y.Length - 1);

                    switch (foundPosition)
                    {
                        case MatchPosition.FirstFirst:
                            found.X.InsertToReverse(1, x, 0, found.X.Length - 1);
                            found.Y.InsertToReverse(1, y, 0, found.Y.Length - 1);
                            break;
                        case MatchPosition.FirstLast:
                            found.X.InsertTo(0, x, 0, found.X.Length - 1);
                            found.Y.InsertTo(0, y, 0, found.Y.Length - 1);
                            break;
                        case MatchPosition.LastFirst:
                            found.X.CopyTo(x, lengthBefore - 1);
                            found.Y.CopyTo(y, lengthBefore - 1);
                            break;
                        case MatchPosition.LastLast:
                            found.X.CopyToReverse(x, lengthBefore - 1);
                            found.Y.CopyToReverse(y, lengthBefore - 1);
                            break;
                    }

                    // select a new line.
                    foundPosition = this.FindMatch(lines, x, y, line.Value, out found);
                    mergeCount++;
                }

                // add the new points.
                uint? pointsId = target.AddPoints(x, y);

                // add points again with appropriate styles.
                if (pointsId.HasValue)
                {
                    foreach (var style in line.Value)
                    {
                        var scene2DStyleLine = (style as Scene2DStyleLine);
                        if (scene2DStyleLine != null)
                        {
                            StyleLine styleLine = source.GetStyleLine(scene2DStyleLine.StyleLineId);
                            target.AddStyleLine(pointsId.Value, styleLine.Layer, styleLine.MinZoom, styleLine.MaxZoom,
                                styleLine.Color, styleLine.Width, styleLine.LineJoin, styleLine.Dashes);
                            continue;
                        }
                        var scene2DStyleLineText = (style as Scene2DStyleLineText);
                        if (scene2DStyleLineText != null)
                        {
                            StyleText styleText = source.GetStyleLineText(scene2DStyleLineText.StyleLineTextId);
                            string text = source.GetText(scene2DStyleLineText.TextId);
                            target.AddStyleLineText(pointsId.Value, styleText.Layer, styleText.MinZoom, styleText.MaxZoom,
                                styleText.Color, styleText.Size, text, styleText.Font, styleText.HaloColor, styleText.HaloRadius);
                            continue;
                        }
                    }
                }
            }
        }
コード例 #4
0
ファイル: LayerGpx.cs プロジェクト: detlevn/OsmSharp
        /// <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);
        }
コード例 #5
0
        /// <summary>
        /// Merges objects from the given scene for the given zoom level.
        /// </summary>
        /// <param name="target"></param>
        /// <param name="source"></param>
        /// <param name="idx"></param>
        private void MergeObjects(Scene2D target, Scene2D source, int idx)
        {
            Dictionary <Scene2D.ScenePoints, Scene2DStylesSet>    lines     = new Dictionary <Scene2D.ScenePoints, Scene2DStylesSet>();
            Dictionary <PointF2D, HashSet <Scene2D.ScenePoints> > endpoints = new Dictionary <PointF2D, HashSet <Scene2D.ScenePoints> >();
            Dictionary <uint, SceneObject> sceneObjects = source.GetSceneObjectsAt(idx);

            foreach (var sceneObject in sceneObjects)
            {
                if (sceneObject.Value.Enum == SceneObjectType.LineObject)
                { // the scene object is a line object.
                    var sceneLineObject             = sceneObject.Value as SceneLineObject;
                    Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineObject.GeoId);
                    Scene2DStylesSet    stylesSet   = null;
                    if (!lines.TryGetValue(scenePoints, out stylesSet))
                    { // create styles set.
                        stylesSet = new Scene2DStylesSet();
                        lines.Add(scenePoints, stylesSet);
                    }
                    stylesSet.AddStyleLine(sceneLineObject.StyleId);

                    //var sceneLineObject = (sceneObject.Value as SceneLineObject);
                    //Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineObject.GeoId);
                    //StyleLine styleLine = source.GetStyleLine(sceneLineObject.StyleId);

                    //uint? pointsId = target.AddPoints(scenePoints.X, scenePoints.Y);
                    //if (pointsId.HasValue)
                    //{
                    //    target.AddStyleLine(pointsId.Value, styleLine.Layer, styleLine.MinZoom, styleLine.MaxZoom,
                    //        styleLine.Color, styleLine.Width, styleLine.LineJoin, styleLine.Dashes);
                    //}
                }
                else if (sceneObject.Value.Enum == SceneObjectType.LineTextObject)
                {
                    var sceneLineTextObject         = sceneObject.Value as SceneLineTextObject;
                    Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineTextObject.GeoId);
                    Scene2DStylesSet    stylesSet   = null;
                    if (!lines.TryGetValue(scenePoints, out stylesSet))
                    { // create styles set.
                        stylesSet = new Scene2DStylesSet();
                        lines.Add(scenePoints, stylesSet);
                    }
                    stylesSet.AddStyleLineText(sceneLineTextObject.StyleId, sceneLineTextObject.TextId);

                    //var sceneLineTextObject = (sceneObject.Value as SceneLineTextObject);
                    //Scene2D.ScenePoints scenePoints = source.GetPoints(sceneLineTextObject.GeoId);
                    //StyleText styleText = source.GetStyleText(sceneLineTextObject.StyleId);
                    //string text = source.GetText(sceneLineTextObject.TextId);

                    //uint? pointsId = target.AddPoints(scenePoints.X, scenePoints.Y);
                    //if (pointsId.HasValue)
                    //{
                    //    target.AddStyleLineText(pointsId.Value, styleText.Layer, styleText.MinZoom, styleText.MaxZoom,
                    //        styleText.Color, styleText.Size, text, styleText.Font, styleText.HaloColor, styleText.HaloRadius);
                    //}
                }
                else if (sceneObject.Value.Enum == SceneObjectType.IconObject)
                {
                    throw new NotSupportedException("Icons not yet supported!");
                    //var sceneIconObject = (sceneObject.Value as SceneIconObject);
                    //Scene2D.ScenePoint scenePoint = source.GetPoint(sceneIconObject.GeoId);
                    //source.GetStyleIcon(
                    //target.AddIcon(target.AddPoint(scenePoint.X, scenePoint.Y);
                }
                else if (sceneObject.Value.Enum == SceneObjectType.PointObject)
                {
                    var scenePointObject          = (sceneObject.Value as ScenePointObject);
                    Scene2D.ScenePoint scenePoint = source.GetPoint(scenePointObject.GeoId);
                    StylePoint         stylePoint = source.GetStylePoint(scenePointObject.StyleId);

                    target.AddStylePoint(target.AddPoint(scenePoint.X, scenePoint.Y), stylePoint.Layer, stylePoint.MinZoom, stylePoint.MaxZoom,
                                         stylePoint.Color, stylePoint.Size);
                }
                else if (sceneObject.Value.Enum == SceneObjectType.PolygonObject)
                {
                    var scenePolygonObject           = (sceneObject.Value as ScenePolygonObject);
                    Scene2D.ScenePoints scenePoints  = source.GetPoints(sceneObject.Value.GeoId);
                    StylePolygon        stylePolygon = source.GetStylePolygon(sceneObject.Value.StyleId);

                    uint?pointsId = target.AddPoints(scenePoints.X, scenePoints.Y);
                    if (pointsId.HasValue)
                    {
                        target.AddStylePolygon(pointsId.Value, stylePolygon.Layer, stylePolygon.MinZoom, stylePolygon.MaxZoom,
                                               stylePolygon.Color, stylePolygon.Width, stylePolygon.Fill);
                    }
                }
                else if (sceneObject.Value.Enum == SceneObjectType.TextObject)
                {
                    var sceneTextObject           = (sceneObject.Value as SceneTextObject);
                    Scene2D.ScenePoint scenePoint = source.GetPoint(sceneObject.Value.GeoId);
                    StyleText          styleText  = source.GetStyleText(sceneTextObject.StyleId);
                    string             text       = source.GetText(sceneTextObject.TextId);

                    target.AddText(target.AddPoint(scenePoint.X, scenePoint.Y), styleText.Layer, styleText.MinZoom, styleText.MaxZoom,
                                   styleText.Size, text, styleText.Color, styleText.HaloColor, styleText.HaloRadius, styleText.Font);
                }
            }

            // loop until there are no more candidates.
            int   totalLines     = lines.Count;
            float latestProgress = 0;

            while (lines.Count > 0)
            {
                var line = lines.First();
                lines.Remove(line.Key);

                // report progress.
                float progress = (float)System.Math.Round((((double)(totalLines - lines.Count) / (double)totalLines) * 100));
                if (progress != latestProgress)
                {
                    OsmSharp.Logging.Log.TraceEvent("SceneSerializer", OsmSharp.Logging.TraceEventType.Information,
                                                    "Merging lines ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines);
                    latestProgress = progress;
                }

                // copy the coordinates to lists.
                double[] x = line.Key.X.Clone() as double[];
                double[] y = line.Key.Y.Clone() as double[];

                // find a matching line.
                int mergeCount = 1;
                Scene2D.ScenePoints found;
                MatchPosition       foundPosition = this.FindMatch(lines, x, y, line.Value, out found);
                while (found != null)
                { // TODO: keep expanding and duplicating until not possible anymore.
                    // remove the found line.
                    lines.Remove(found);

                    // add the line.
                    int lengthBefore = x.Length;
                    Array.Resize(ref x, x.Length + found.X.Length - 1);
                    Array.Resize(ref y, y.Length + found.Y.Length - 1);

                    switch (foundPosition)
                    {
                    case MatchPosition.FirstFirst:
                        found.X.InsertToReverse(1, x, 0, found.X.Length - 1);
                        found.Y.InsertToReverse(1, y, 0, found.Y.Length - 1);
                        break;

                    case MatchPosition.FirstLast:
                        found.X.InsertTo(0, x, 0, found.X.Length - 1);
                        found.Y.InsertTo(0, y, 0, found.Y.Length - 1);
                        break;

                    case MatchPosition.LastFirst:
                        found.X.CopyTo(x, lengthBefore - 1);
                        found.Y.CopyTo(y, lengthBefore - 1);
                        break;

                    case MatchPosition.LastLast:
                        found.X.CopyToReverse(x, lengthBefore - 1);
                        found.Y.CopyToReverse(y, lengthBefore - 1);
                        break;
                    }

                    // select a new line.
                    foundPosition = this.FindMatch(lines, x, y, line.Value, out found);
                    mergeCount++;
                }

                // add the new points.
                uint?pointsId = target.AddPoints(x, y);

                // add points again with appropriate styles.
                if (pointsId.HasValue)
                {
                    foreach (var style in line.Value)
                    {
                        var scene2DStyleLine = (style as Scene2DStyleLine);
                        if (scene2DStyleLine != null)
                        {
                            StyleLine styleLine = source.GetStyleLine(scene2DStyleLine.StyleLineId);
                            target.AddStyleLine(pointsId.Value, styleLine.Layer, styleLine.MinZoom, styleLine.MaxZoom,
                                                styleLine.Color, styleLine.Width, styleLine.LineJoin, styleLine.Dashes);
                            continue;
                        }
                        var scene2DStyleLineText = (style as Scene2DStyleLineText);
                        if (scene2DStyleLineText != null)
                        {
                            StyleText styleText = source.GetStyleLineText(scene2DStyleLineText.StyleLineTextId);
                            string    text      = source.GetText(scene2DStyleLineText.TextId);
                            target.AddStyleLineText(pointsId.Value, styleText.Layer, styleText.MinZoom, styleText.MaxZoom,
                                                    styleText.Color, styleText.Size, text, styleText.Font, styleText.HaloColor, styleText.HaloRadius);
                            continue;
                        }
                    }
                }
            }
        }