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;
}
}
}
}
}