public static IProjection DefaultProjection = new WebMercator(); // = 10000; /// <summary> /// Calculates the scalefactor to store the coordinates. /// </summary> /// <param name="zoomFactor"></param> /// <returns></returns> public static int CalculateScaleFactor(float zoomFactor) { return((1.0 / Scene2D.CalculateSimplificationEpsilon(DefaultProjection, zoomFactor)).Power10Floor() * 10); }
/// <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) { var lines = new Dictionary <Scene2D.ScenePoints, Scene2DStylesSet>(); var linesIndex = new QuadTree <PointF2D, Scene2D.ScenePoints>(); var polygons = new Dictionary <Scene2D.ScenePoints, Scene2DStylesSet>(); //var polygonsIndex = new QuadTree<PointF2D, Scene2D.ScenePoints>(); Dictionary <uint, SceneObject> sceneObjects = source.GetSceneObjectsAt(idx); float zoomFactor = source.GetMaximumZoomFactorAt(idx); float epsilon = source.CalculateSimplificationEpsilon(zoomFactor); 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); // add scenePoints to the index. linesIndex.Add(new PointF2D(scenePoints.X[0], scenePoints.Y[0]), scenePoints); linesIndex.Add(new PointF2D(scenePoints.X[scenePoints.X.Length - 1], scenePoints.Y[scenePoints.Y.Length - 1]), scenePoints); } stylesSet.AddStyleLine(sceneLineObject.StyleId); } 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); // add scenePoints to the index. linesIndex.Add(new PointF2D(scenePoints.X[0], scenePoints.Y[0]), scenePoints); linesIndex.Add(new PointF2D(scenePoints.X[scenePoints.X.Length - 1], scenePoints.Y[scenePoints.Y.Length - 1]), scenePoints); } stylesSet.AddStyleLineText(sceneLineTextObject.StyleId, sceneLineTextObject.TextId); } 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) { // the scene object is a polygon. var scenePolygonObject = (sceneObject.Value as ScenePolygonObject); Scene2D.ScenePoints scenePoints = source.GetPoints(sceneObject.Value.GeoId); Scene2DStylesSet stylesSet = null; if (!polygons.TryGetValue(scenePoints, out stylesSet)) { // create styles set. stylesSet = new Scene2DStylesSet(); polygons.Add(scenePoints, stylesSet); //// add scenePoints to the index. //polygonsIndex.Add(new PointF2D(scenePoints.X[0], scenePoints.Y[0]), scenePoints); //polygonsIndex.Add(new PointF2D(scenePoints.X[scenePoints.X.Length - 1], scenePoints.Y[scenePoints.Y.Length - 1]), scenePoints); } stylesSet.AddStylePolygon(scenePolygonObject.StyleId); //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 @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines, zoomFactor, epsilon); 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(linesIndex, lines, x, y, line.Value, epsilon, out found); while (found != null) { // TODO: keep expanding and duplicating until not possible anymore. // remove the found line. lines.Remove(found); // report progress. 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 @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines, zoomFactor, epsilon); latestProgress = progress; } // 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(linesIndex, lines, x, y, line.Value, epsilon, out found); mergeCount++; } // simplify first. double[][] simplified = OsmSharp.Math.Algorithms.SimplifyCurve.Simplify(new double[][] { x, y }, epsilon); // add the new points. uint?pointsId = target.AddPoints(simplified[0], simplified[1]); // 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; } } } } // loop until there are no more candidates. totalLines = polygons.Count; latestProgress = 0; while (polygons.Count > 0) { var polygon = polygons.First(); polygons.Remove(polygon.Key); // report progress. float progress = (float)System.Math.Round((((double)(totalLines - polygons.Count) / (double)totalLines) * 100)); if (progress != latestProgress) { OsmSharp.Logging.Log.TraceEvent("SceneSerializer", OsmSharp.Logging.TraceEventType.Information, "Merging polygons @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - polygons.Count, totalLines, zoomFactor, epsilon); latestProgress = progress; } // copy the coordinates to lists. double[] x = polygon.Key.X.Clone() as double[]; double[] y = polygon.Key.Y.Clone() as double[]; //// find a matching line. //int mergeCount = 1; //Scene2D.ScenePoints found; //MatchPosition foundPosition = this.FindMatch(linesIndex, lines, x, y, line.Value, epsilon, out found); //while (found != null) //{ // TODO: keep expanding and duplicating until not possible anymore. // // remove the found line. // lines.Remove(found); // // report progress. // 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 @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines, zoomFactor, epsilon); // latestProgress = progress; // } // // 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(linesIndex, lines, x, y, line.Value, epsilon, out found); // mergeCount++; //} // simplify first. double[][] simplified = OsmSharp.Math.Algorithms.SimplifyCurve.Simplify(new double[][] { x, y }, epsilon); // add the new points. uint?pointsId = target.AddPoints(simplified[0], simplified[1]); // add points again with appropriate styles. if (pointsId.HasValue) { foreach (var style in polygon.Value) { var scene2DStylePolygon = (style as Scene2DStylePolygon); if (scene2DStylePolygon != null) { StylePolygon stylePolygon = source.GetStylePolygon(scene2DStylePolygon.StylePolygonId); target.AddStylePolygon(pointsId.Value, stylePolygon.Layer, stylePolygon.MinZoom, stylePolygon.MaxZoom, stylePolygon.Color, stylePolygon.Width, stylePolygon.Fill); continue; } } } } }
/// <summary> /// Renders the primities for the given scene. /// </summary> /// <param name="target"></param> /// <param name="view"></param> /// <param name="zoomFactor"></param> /// <param name="primitives"></param> private bool RenderPrimitives(Target2DWrapper <TTarget> target, View2D view, float zoomFactor, IEnumerable <Primitive2D> primitives) { try { // calculate current simplification epsilon. double epsilon = Scene2D.CalculateSimplificationEpsilon(new WebMercator(), zoomFactor); // loop over all primitives in the scene. int simplifiedLines = 0; int droppedLines = 0; foreach (Primitive2D primitive in primitives) { // the primitive is visible. if (_cancelFlag) { return(false); // stop rendering on cancel and return false for an incomplete rendering. } if (primitive == null) { continue; } double[] x, y; switch (primitive.Primitive2DType) { case Primitive2DType.Line2D: Line2D line = (Line2D)primitive; x = line.X; y = line.Y; if (x.Length > 4 && line.MaxZoom > zoomFactor * 2 && line.MaxZoom < 512) { // try and simplify. double[][] simplified = OsmSharp.Math.Algorithms.SimplifyCurve.Simplify(new double[][] { x, y }, epsilon); if (simplified[0].Length < line.X.Length) { simplifiedLines++; x = simplified[0]; y = simplified[1]; } double distance = epsilon * 2; if (simplified[0].Length == 2) { // check if the simplified version is smaller than epsilon. distance = System.Math.Sqrt( System.Math.Pow((simplified[0][0] - simplified[0][1]), 2) + System.Math.Pow((simplified[1][0] - simplified[1][1]), 2)); } if (distance < epsilon) { droppedLines++; continue; } } this.DrawLine(target, x, y, line.Color, this.FromPixels(target, view, line.Width), line.LineJoin, line.Dashes); break; case Primitive2DType.Polygon2D: Polygon2D polygon = (Polygon2D)primitive; x = polygon.X; y = polygon.Y; //if (x.Length > 4 && polygon.MaxZoom > zoomFactor * 2 && polygon.MaxZoom < 512) //{ // try and simplify. // double[][] simplified = OsmSharp.Math.Algorithms.SimplifyCurve.Simplify(new double[][] { x, y }, // epsilon); // if (simplified[0].Length < polygon.X.Length) // { // simplifiedLines++; // x = simplified[0]; // y = simplified[1]; // } // double distance = epsilon * 2; // if (simplified[0].Length == 2) // { // check if the simplified version is smaller than epsilon. // distance = System.Math.Sqrt( // System.Math.Pow((simplified[0][0] - simplified[0][1]), 2) + // System.Math.Pow((simplified[1][0] - simplified[1][1]), 2)); // } // //if (distance < epsilon) // //{ // // droppedLines++; // // continue; // //} //} this.DrawPolygon(target, x, y, polygon.Color, this.FromPixels(target, view, polygon.Width), polygon.Fill); break; case Primitive2DType.LineText2D: LineText2D lineText = (LineText2D)primitive; this.DrawLineText(target, lineText.X, lineText.Y, lineText.Text, lineText.Color, this.FromPixels(target, view, lineText.Size), lineText.HaloColor, lineText.HaloRadius, lineText.Font); break; case Primitive2DType.Point2D: Point2D point = (Point2D)primitive; this.DrawPoint(target, point.X, point.Y, point.Color, this.FromPixels(target, view, point.Size)); break; case Primitive2DType.Icon2D: Icon2D icon = (Icon2D)primitive; this.DrawIcon(target, icon.X, icon.Y, icon.Image); break; case Primitive2DType.ImageTilted2D: ImageTilted2D imageTilted = (ImageTilted2D)primitive; this.DrawImage(target, imageTilted.Bounds, imageTilted.NativeImage); break; case Primitive2DType.Image2D: Image2D image = (Image2D)primitive; this.DrawImage(target, image.Left, image.Top, image.Right, image.Bottom, image.NativeImage); break; case Primitive2DType.Text2D: Text2D text = (Text2D)primitive; this.DrawText(target, text.X, text.Y, text.Text, text.Color, this.FromPixels(target, view, text.Size), text.HaloColor, text.HaloRadius, text.Font); break; } } return(true); } catch (Exception ex) { OsmSharp.Logging.Log.TraceEvent("Renderer2D", OsmSharp.Logging.TraceEventType.Error, ex.Message); throw ex; } }
/// <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) { var lines = new Dictionary<Scene2D.ScenePoints, Scene2DStylesSet>(); var linesIndex = new QuadTree<PointF2D, Scene2D.ScenePoints>(); var polygons = new Dictionary<Scene2D.ScenePoints, Scene2DStylesSet>(); //var polygonsIndex = new QuadTree<PointF2D, Scene2D.ScenePoints>(); Dictionary<uint, SceneObject> sceneObjects = source.GetSceneObjectsAt(idx); float zoomFactor = source.GetMaximumZoomFactorAt(idx); float epsilon = source.CalculateSimplificationEpsilon(zoomFactor); 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); // add scenePoints to the index. linesIndex.Add(new PointF2D(scenePoints.X[0], scenePoints.Y[0]), scenePoints); linesIndex.Add(new PointF2D(scenePoints.X[scenePoints.X.Length - 1], scenePoints.Y[scenePoints.Y.Length - 1]), scenePoints); } stylesSet.AddStyleLine(sceneLineObject.StyleId); } 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); // add scenePoints to the index. linesIndex.Add(new PointF2D(scenePoints.X[0], scenePoints.Y[0]), scenePoints); linesIndex.Add(new PointF2D(scenePoints.X[scenePoints.X.Length - 1], scenePoints.Y[scenePoints.Y.Length - 1]), scenePoints); } stylesSet.AddStyleLineText(sceneLineTextObject.StyleId, sceneLineTextObject.TextId); } 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) { // the scene object is a polygon. var scenePolygonObject = (sceneObject.Value as ScenePolygonObject); Scene2D.ScenePoints scenePoints = source.GetPoints(sceneObject.Value.GeoId); Scene2DStylesSet stylesSet = null; if (!polygons.TryGetValue(scenePoints, out stylesSet)) { // create styles set. stylesSet = new Scene2DStylesSet(); polygons.Add(scenePoints, stylesSet); //// add scenePoints to the index. //polygonsIndex.Add(new PointF2D(scenePoints.X[0], scenePoints.Y[0]), scenePoints); //polygonsIndex.Add(new PointF2D(scenePoints.X[scenePoints.X.Length - 1], scenePoints.Y[scenePoints.Y.Length - 1]), scenePoints); } stylesSet.AddStylePolygon(scenePolygonObject.StyleId); //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 @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines, zoomFactor, epsilon); 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(linesIndex, lines, x, y, line.Value, epsilon, out found); while (found != null) { // TODO: keep expanding and duplicating until not possible anymore. // remove the found line. lines.Remove(found); // report progress. 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 @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines, zoomFactor, epsilon); latestProgress = progress; } // 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(linesIndex, lines, x, y, line.Value, epsilon, out found); mergeCount++; } // simplify first. double[][] simplified = OsmSharp.Math.Algorithms.SimplifyCurve.Simplify(new double[][] { x, y }, epsilon); // add the new points. uint? pointsId = target.AddPoints(simplified[0], simplified[1]); // 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; } } } } // loop until there are no more candidates. totalLines = polygons.Count; latestProgress = 0; while (polygons.Count > 0) { var polygon = polygons.First(); polygons.Remove(polygon.Key); // report progress. float progress = (float)System.Math.Round((((double)(totalLines - polygons.Count) / (double)totalLines) * 100)); if (progress != latestProgress) { OsmSharp.Logging.Log.TraceEvent("SceneSerializer", OsmSharp.Logging.TraceEventType.Information, "Merging polygons @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - polygons.Count, totalLines, zoomFactor, epsilon); latestProgress = progress; } // copy the coordinates to lists. double[] x = polygon.Key.X.Clone() as double[]; double[] y = polygon.Key.Y.Clone() as double[]; //// find a matching line. //int mergeCount = 1; //Scene2D.ScenePoints found; //MatchPosition foundPosition = this.FindMatch(linesIndex, lines, x, y, line.Value, epsilon, out found); //while (found != null) //{ // TODO: keep expanding and duplicating until not possible anymore. // // remove the found line. // lines.Remove(found); // // report progress. // 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 @z{3}e{4} ({1}/{2})... {0}%", progress, totalLines - lines.Count, totalLines, zoomFactor, epsilon); // latestProgress = progress; // } // // 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(linesIndex, lines, x, y, line.Value, epsilon, out found); // mergeCount++; //} // simplify first. double[][] simplified = OsmSharp.Math.Algorithms.SimplifyCurve.Simplify(new double[][] { x, y }, epsilon); // add the new points. uint? pointsId = target.AddPoints(simplified[0], simplified[1]); // add points again with appropriate styles. if (pointsId.HasValue) { foreach (var style in polygon.Value) { var scene2DStylePolygon = (style as Scene2DStylePolygon); if (scene2DStylePolygon != null) { StylePolygon stylePolygon = source.GetStylePolygon(scene2DStylePolygon.StylePolygonId); target.AddStylePolygon(pointsId.Value, stylePolygon.Layer, stylePolygon.MinZoom, stylePolygon.MaxZoom, stylePolygon.Color, stylePolygon.Width, stylePolygon.Fill); continue; } } } } }