/// <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>
/// Deserializes the given leaf.
/// </summary>
/// <param name="typeModel"></param>
/// <param name="data"></param>
/// <param name="boxes"></param>
/// <returns></returns>
protected override List <Primitive2D> DeSerialize(RuntimeTypeModel typeModel,
byte[] data, out List <BoxF2D> boxes)
{
if (_compressed)
{ // decompress if needed.
data = GZipStream.UncompressBuffer(data);
}
List <Primitive2D> dataLists = new List <Primitive2D>();
boxes = new List <BoxF2D>();
int scaleFactor = _scaleFactor;
// Assume the following stuff already exists in the current scene:
// - ZoomRanges
// - Styles
// deserialize the leaf data.
SceneObjectBlock leafData = typeModel.Deserialize(
new MemoryStream(data), null, typeof(SceneObjectBlock)) as SceneObjectBlock;
// decode
for (int idx = 0; idx < leafData.PointsX.Count; idx++)
{
leafData.PointsX[idx] = leafData.PointsX[idx] + leafData.PointsXMin;
leafData.PointsY[idx] = leafData.PointsY[idx] + leafData.PointsYMin;
}
// store the next points.
bool[] pointsStarts = new bool[leafData.PointsX.Count];
// loop over all points.
for (int idx = 0; idx < leafData.PointPointId.Count; idx++)
{
pointsStarts[leafData.PointPointId[idx]] = true;
}
// loop over all text-points.
for (int idx = 0; idx < leafData.TextPointPointId.Count; idx++)
{
pointsStarts[leafData.TextPointPointId[idx]] = true;
}
// loop over all icons.
for (int idx = 0; idx < leafData.IconPointId.Count; idx++)
{
pointsStarts[leafData.IconPointId[idx]] = true;
}
// loop over all lines.
for (int idx = 0; idx < leafData.LinePointsId.Count; idx++)
{
pointsStarts[leafData.LinePointsId[idx]] = true;
}
// loop over all polygons.
for (int idx = 0; idx < leafData.PolygonPointsId.Count; idx++)
{
pointsStarts[leafData.PolygonPointsId[idx]] = true;
}
// loop over all line-texts.
for (int idx = 0; idx < leafData.LineTextPointsId.Count; idx++)
{
pointsStarts[leafData.LineTextPointsId[idx]] = true;
}
Dictionary <int, int> pointsBoundaries = new Dictionary <int, int>();
int previous = 0;
for (int idx = 1; idx < pointsStarts.Length; idx++)
{
if (pointsStarts[idx])
{ // there is a start here.
pointsBoundaries[previous] = idx - previous;
previous = idx;
}
}
pointsBoundaries[previous] = pointsStarts.Length - previous;
// loop over all points.
for (int idx = 0; idx < leafData.PointPointId.Count; idx++)
{
// get properties.
int pointId = leafData.PointPointId[idx];
uint styleId = leafData.PointStyleId[idx];
// get point/style/zoomrange.
double x = (double)leafData.PointsX[pointId] / (double)scaleFactor;
double y = (double)leafData.PointsY[pointId] / (double)scaleFactor;
StylePoint style = _index.PointStyles[styleId];
// build the primitive.
Point2D point = new Point2D(x, y, style.Color, style.Size);
point.Layer = style.Layer;
point.MinZoom = style.MinZoom;
point.MaxZoom = style.MaxZoom;
dataLists.Add(point);
boxes.Add(new BoxF2D(new PointF2D(x, y)));
}
// loop over all text-points.
for (int idx = 0; idx < leafData.TextPointPointId.Count; idx++)
{
// get properties.
int pointId = leafData.TextPointPointId[idx];
uint styleId = leafData.TextPointStyleId[idx];
string text = leafData.TextPointText[idx];
// get point/style/zoomrange.
float x = (float)leafData.PointsX[pointId] / (float)scaleFactor;
float y = (float)leafData.PointsY[pointId] / (float)scaleFactor;
StyleText style = _index.TextStyles[styleId];
// build the primitive.
Text2D text2D = new Text2D(x, y, text, style.Color, style.Size);
text2D.Layer = style.Layer;
text2D.HaloColor = style.HaloColor;
text2D.HaloRadius = style.HaloRadius;
text2D.MinZoom = style.MinZoom;
text2D.MaxZoom = style.MaxZoom;
dataLists.Add(text2D);
boxes.Add(new BoxF2D(new PointF2D(x, y)));
}
// loop over all icons.
for (int idx = 0; idx < leafData.IconPointId.Count; idx++)
{
// get properties.
int pointId = leafData.IconPointId[idx];
uint imageId = leafData.IconImageId[idx];
// get point/style/zoomrange.
double x = (double)leafData.PointsX[pointId] / (double)scaleFactor;
double y = (double)leafData.PointsY[pointId] / (double)scaleFactor;
byte[] image = _index.IconImage[(int)imageId];
// build the primitive.
Icon2D icon = new Icon2D(x, y, image);
icon.Layer = 0;
// TODO: layer and zoom level. style.MinZoom, style.MaxZoom
dataLists.Add(icon);
boxes.Add(new BoxF2D(new PointF2D(x, y)));
}
// loop over all lines.
for (int idx = 0; idx < leafData.LinePointsId.Count; idx++)
{
// get properties.
int pointsId = leafData.LinePointsId[idx];
uint styleId = leafData.LineStyleId[idx];
// get points/style/zoomrange.
int pointsCount = pointsBoundaries[pointsId];
double[] x =
leafData.PointsX.GetRange(pointsId, pointsCount).ConvertFromLongArray(scaleFactor);
double[] y =
leafData.PointsY.GetRange(pointsId, pointsCount).ConvertFromLongArray(scaleFactor);
StyleLine style = _index.LineStyles[styleId];
// build the primitive.
Line2D line = new Line2D(x, y, style.Color, style.Width, style.LineJoin, style.Dashes);
line.Layer = style.Layer;
line.MinZoom = style.MinZoom;
line.MaxZoom = style.MaxZoom;
dataLists.Add(line);
boxes.Add(new BoxF2D(x, y));
}
// loop over all polygons.
for (int idx = 0; idx < leafData.PolygonPointsId.Count; idx++)
{
// get properties.
int pointsId = leafData.PolygonPointsId[idx];
uint styleId = leafData.PolygonStyleId[idx];
// get points/style/zoomrange.
int pointsCount = pointsBoundaries[pointsId];
double[] x =
leafData.PointsX.GetRange(pointsId, pointsCount).ConvertFromLongArray(scaleFactor);
double[] y =
leafData.PointsY.GetRange(pointsId, pointsCount).ConvertFromLongArray(scaleFactor);
StylePolygon style = _index.PolygonStyles[styleId];
// build the primitive.
Polygon2D polygon = new Polygon2D(x, y, style.Color, style.Width, style.Fill);
polygon.Layer = style.Layer;
polygon.MaxZoom = style.MaxZoom;
polygon.MinZoom = style.MinZoom;
dataLists.Add(polygon);
boxes.Add(new BoxF2D(x, y));
}
// loop over all line-texts.
for (int idx = 0; idx < leafData.LineTextPointsId.Count; idx++)
{
// get properties.
int pointsId = leafData.LineTextPointsId[idx];
uint styleId = leafData.LineTextStyleId[idx];
string text = leafData.LineTextText[idx];
// get points/style/zoomrange.
int pointsCount = pointsBoundaries[pointsId];
double[] x =
leafData.PointsX.GetRange(pointsId, pointsCount).ConvertFromLongArray(scaleFactor);
double[] y =
leafData.PointsY.GetRange(pointsId, pointsCount).ConvertFromLongArray(scaleFactor);
StyleText style = _index.TextStyles[styleId];
// build the primitive.
LineText2D lineText = new LineText2D(x, y, style.Color, style.Size, text);
lineText.Layer = style.Layer;
lineText.Font = style.Font;
lineText.HaloColor = style.HaloColor;
lineText.HaloRadius = style.HaloRadius;
lineText.MinZoom = style.MinZoom;
lineText.MaxZoom = style.MaxZoom;
dataLists.Add(lineText);
boxes.Add(new BoxF2D(x, y));
}
return(dataLists);
}
