namespace ExampleCodeSnippets
{

/// <summary>
/// A (simple) street direction symbolizer
/// </summary>
public class StreetDirectionSymbolizer : SharpMap.Rendering.Symbolizer.BaseSymbolizer,
 SharpMap.Rendering.Symbolizer.ILineSymbolizer
{
 /// <summary>
 /// Creates an instance of this class
 /// </summary>
 public StreetDirectionSymbolizer()
 {
 RepeatInterval = 500;
 ArrowLength = 100;
 ArrowPen = new System.Drawing.Pen(System.Drawing.Color.Black, 2)
 {
 EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor
 };
 }

 /// <summary>
 /// Method to place the street direction symbols
 /// </summary>
 /// <param name="map"></param>
 /// <param name="lineString"></param>
 /// <param name="graphics"></param>
 private void OnRenderInternal(SharpMap.MapViewport map, GeoAPI.Geometries.ILineString lineString,
 System.Drawing.Graphics graphics)
 {

 var length = lineString.Length;
 var lil = new NetTopologySuite.LinearReferencing.LengthIndexedLine(lineString);
 if (length < RepeatInterval + ArrowLength)
 {
 var start = System.Math.Max(0, (length - ArrowLength)/2);
 var end = System.Math.Min(length, (length + ArrowLength)/2);
 var arrow = (GeoAPI.Geometries.ILineString) lil.ExtractLine(start, end);

 RenderArrow(map, graphics, arrow);

 return;
 }

 var numArrows = (int) ((lineString.Length - ArrowLength)/RepeatInterval);
 var offset = (lineString.Length - numArrows*RepeatInterval - ArrowLength)*0.5;

 while (offset + ArrowLength < lineString.Length)
 {
 var arrow = (GeoAPI.Geometries.ILineString) lil.ExtractLine(offset, offset + ArrowLength);
 RenderArrow(map, graphics, arrow);
 offset += RepeatInterval;
 }

 }

 /// <summary>
 /// Method to render the arrow
 /// </summary>
 /// <param name="map">The map</param>
 /// <param name="graphics">The graphics object</param>
 /// <param name="arrow">The arrow</param>
 private void RenderArrow(SharpMap.MapViewport map, System.Drawing.Graphics graphics, GeoAPI.Geometries.ILineString arrow)
 {
 var pts = new System.Drawing.PointF[arrow.Coordinates.Length];
 for (var i = 0; i < pts.Length; i++)
 pts[i] = map.WorldToImage(arrow.GetCoordinateN(i));
 graphics.DrawLines(ArrowPen, pts);
 }

 /// <summary>
 /// Gets or sets a value indicating at which distances a street direction marker should be drawn.
 /// </summary>
 public double RepeatInterval { get; set; }

 /// <summary>
 /// Gets or sets a value indicating the length of the street direction arrow.
 /// </summary>
 public double ArrowLength { get; set; }

 /// <summary>
 /// Gets or sets a value indicating the pen to use when drawing the marker
 /// </summary>
 public System.Drawing.Pen ArrowPen { get; set; }

 public override void Begin(System.Drawing.Graphics g, SharpMap.MapViewport map, int aproximateNumberOfGeometries)
 {
 base.Begin(g, map, aproximateNumberOfGeometries);

 //Adjust Arrow cap
 var size = (float) (ArrowLength/5/map.PixelWidth);
 ArrowPen.CustomEndCap = new System.Drawing.Drawing2D.AdjustableArrowCap(size, size);
 }

 public void Render(SharpMap.MapViewport map, GeoAPI.Geometries.ILineal geometry, System.Drawing.Graphics graphics)
 {
 if (geometry is GeoAPI.Geometries.IMultiLineString)
 {
 var mls = (GeoAPI.Geometries.IMultiLineString) geometry;
 for (var i = 0; i < mls.Count; i++)
 {
 OnRenderInternal(map, (GeoAPI.Geometries.ILineString) mls.GetGeometryN(i), graphics);
 }
 return;
 }
 OnRenderInternal(map, (GeoAPI.Geometries.ILineString) geometry, graphics);
 }

 protected override void ReleaseManagedResources()
 {
 base.ReleaseManagedResources();
 ArrowPen.Dispose();
 }

 public override object Clone()
 {
 var res = (StreetDirectionSymbolizer) MemberwiseClone();
 res.ArrowPen = new System.Drawing.Pen(((System.Drawing.SolidBrush) ArrowPen.Brush).Color, ArrowPen.Width);
 return res;
 }
}

 public class LineSymbolizerTest
 {
 [NUnit.Framework.OneTimeSetUp]
 public void OneTimeSetUp()
 {
 GeoAPI.GeometryServiceProvider.Instance = NetTopologySuite.NtsGeometryServices.Instance;
 }
 [NUnit.Framework.Test] 
 public void TestBasicLineSymbolizer()
 {
 if (!System.IO.File.Exists("d:\\daten\\GeoFabrik\\roads.shp"))
 throw new NUnit.Framework.IgnoreException("");

 var p = new SharpMap.Data.Providers.ShapeFile(@"d:\\daten\\GeoFabrik\\roads.shp", false);
 var l = new SharpMap.Layers.VectorLayer("roads", p);
 //l.Style.Outline = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 5);
 l.Style.Line = new System.Drawing.Pen(System.Drawing.Color.Gold, 1);
 l.Style.EnableOutline = false;
 var m = new SharpMap.Map(new System.Drawing.Size(1440,1080)) {BackColor = System.Drawing.Color.Cornsilk};
 m.Layers.Add(l);

 m.ZoomToExtents();

 var sw = new System.Diagnostics.Stopwatch();
 sw.Start();
 m.GetMap();

 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering old method: {0}ms", sw.ElapsedMilliseconds));
 sw.Reset();
 sw.Start();
 var bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering old method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("NDSRoads1.bmp");


 var cls = new SharpMap.Rendering.Symbolizer.CachedLineSymbolizer();
 //cls.LineSymbolizeHandlers.Add(new SharpMap.Rendering.Symbolizer.PlainLineSymbolizeHandler { Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 5) });
 cls.LineSymbolizeHandlers.Add(new SharpMap.Rendering.Symbolizer.PlainLineSymbolizeHandler { Line = new System.Drawing.Pen(System.Drawing.Color.Gold, 1) });

 l.Style.LineSymbolizer = cls;
 sw.Reset(); sw.Start();
 bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("NDSRoads2.bmp");

 }

 [NUnit.Framework.Test]
 public void TestStreetDirectionSymbolizer()
 {
 if (!System.IO.File.Exists("d:\\daten\\GeoFabrik\\Aurich\\roads.shp"))
 throw new NUnit.Framework.IgnoreException("");

 var p = new SharpMap.Data.Providers.ShapeFile(@"d:\\daten\\GeoFabrik\\Aurich\\roads.shp", false);
 var l = new SharpMap.Layers.VectorLayer("roads", p);
 l.Style.Outline = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 7);
 l.Style.Line = new System.Drawing.Pen(System.Drawing.Color.Gold, 3);
 l.Style.EnableOutline = true;
 var sd = new SharpMap.Layers.Symbolizer.LinealVectorLayer("streetd", p, new StreetDirectionSymbolizer()
 {
 ArrowLength = 100, RepeatInterval = 500
 });
 var m = new SharpMap.Map(new System.Drawing.Size(1440, 1080)) { BackColor = System.Drawing.Color.Cornsilk };
 m.Layers.Add(l);
 m.Layers.Add(sd);

 m.ZoomToExtents();
 m.Zoom *= 0.3;

 var sw = new System.Diagnostics.Stopwatch();
 sw.Start();
 var bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("NDSRoadsSD.bmp");

 }
 [NUnit.Framework.Test]
 public void TestWarpedLineSymbolizer()
 {
 if (!System.IO.File.Exists("d:\\daten\\GeoFabrik\\Aurich\\roads.shp"))
 throw new NUnit.Framework.IgnoreException("");

 var p = new SharpMap.Data.Providers.ShapeFile(@"d:\\daten\\GeoFabrik\\Aurich\\roads.shp", false);

 var l = new SharpMap.Layers.VectorLayer("roads", p);
 
 var cls = new SharpMap.Rendering.Symbolizer.CachedLineSymbolizer();
 cls.LineSymbolizeHandlers.Add(new SharpMap.Rendering.Symbolizer.PlainLineSymbolizeHandler
 {Line = new System.Drawing.Pen(System.Drawing.Color.Gold, 2)});

 var wls = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.
 GetGreaterSeries(3, 3),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1)
 , Interval = 20
 };
 cls.LineSymbolizeHandlers.Add(wls);
 l.Style.LineSymbolizer = cls;

 var m = new SharpMap.Map(new System.Drawing.Size(720, 540)) {BackColor = System.Drawing.Color.Cornsilk};
 m.Layers.Add(l);

 m.ZoomToExtents();

 var sw = new System.Diagnostics.Stopwatch();

 sw.Start();
 var bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads1.bmp");

 cls.LineSymbolizeHandlers[1] = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.
 GetTriangle(4, 0),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1),
 Fill = new System.Drawing.SolidBrush(System.Drawing.Color.Firebrick)
 ,Interval = 10
 };
 sw.Reset(); sw.Start();
 bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads2-0.bmp");

 cls.LineSymbolizeHandlers[1] = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.
 GetTriangle(4, 1),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1),
 Fill = new System.Drawing.SolidBrush(System.Drawing.Color.Firebrick)
 ,
 Interval = 10
 };
 sw.Reset(); sw.Start();
 bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads2-1.bmp");
 cls.LineSymbolizeHandlers[1] = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.
 GetTriangle(4, 2),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1),
 Fill = new System.Drawing.SolidBrush(System.Drawing.Color.Firebrick)
 ,
 Interval = 10
 };
 sw.Reset(); sw.Start();
 bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads2-2.bmp");

 cls.LineSymbolizeHandlers[1] = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.
 GetTriangle(4, 3),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1),
 Fill = new System.Drawing.SolidBrush(System.Drawing.Color.Firebrick)
 ,
 Interval = 10
 };
 sw.Reset(); sw.Start();
 bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads2-3.bmp");


 //cls.LineSymbolizeHandlers[0] = cls.LineSymbolizeHandlers[1];
 cls.LineSymbolizeHandlers[1] = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.GetZigZag(4, 4),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1),
 //Fill = new System.Drawing.SolidBrush(System.Drawing.Color.Firebrick)
 };
 sw.Reset(); sw.Start();
 bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads3.bmp");
 }

 [NUnit.Framework.Test]
 public void TestCachedLineSymbolizerInTheme()
 {
 if (!System.IO.File.Exists("d:\\daten\\GeoFabrik\\Aurich\\roads.shp"))
 throw new NUnit.Framework.IgnoreException("");
 var p = new SharpMap.Data.Providers.ShapeFile(@"d:\\daten\\GeoFabrik\\Aurich\\roads.shp", false);

 var l = new SharpMap.Layers.VectorLayer("roads", p);
 var theme = new ClsTheme(l.Style);
 l.Theme = theme;

 var m = new SharpMap.Map(new System.Drawing.Size(720, 540)) { BackColor = System.Drawing.Color.Cornsilk };
 m.Layers.Add(l);

 m.ZoomToExtents();

 var sw = new System.Diagnostics.Stopwatch();

 sw.Start();
 var bmp = m.GetMap();
 sw.Stop();
 System.Console.WriteLine(string.Format("Rendering new method: {0}ms", sw.ElapsedMilliseconds));
 bmp.Save("AurichRoads1Theme.bmp");
 }

 internal class ClsTheme : SharpMap.Rendering.Thematics.ITheme
 {
 private SharpMap.Styles.VectorStyle _style;

 public ClsTheme(SharpMap.Styles.VectorStyle style)
 {
 _style = style;
 }

 #region Implementation of ITheme

 /// <summary>
 /// Returns the style based on a feature
 /// </summary>
 /// <param name="attribute">Set of attribute values to calculate the <see cref="SharpMap.Styles.IStyle"/> from</param>
 /// <returns>The style</returns>
 public SharpMap.Styles.IStyle GetStyle(SharpMap.Data.FeatureDataRow attribute)
 {
 var res = _style;

 var cls = new SharpMap.Rendering.Symbolizer.CachedLineSymbolizer();
 cls.LineSymbolizeHandlers.Add(new SharpMap.Rendering.Symbolizer.PlainLineSymbolizeHandler { Line = new System.Drawing.Pen(System.Drawing.Color.Gold, 2) });

 var wls = new SharpMap.Rendering.Symbolizer.WarpedLineSymbolizeHander
 {
 Pattern =
 SharpMap.Rendering.Symbolizer.WarpedLineSymbolizer.
 GetGreaterSeries(3, 3),
 Line = new System.Drawing.Pen(System.Drawing.Color.Firebrick, 1)
 ,
 Interval = 20
 
 };
 cls.LineSymbolizeHandlers.Add(wls);
 cls.ImmediateMode = true;

 res.LineSymbolizer = cls;

 return res;
 }

 #endregion
 }

 [NUnit.Framework.Test]
 public void TestTransformation()
 {
 var m = new SharpMap.Map(new System.Drawing.Size(640, 320));

 var l = new SharpMap.Layers.Symbolizer.PuntalVectorLayer("l",
 new SharpMap.Data.Providers.GeometryProvider(m.Factory.CreatePoint(new GeoAPI.Geometries.Coordinate(0, 51.478885))),
 SharpMap.Rendering.Symbolizer.PathPointSymbolizer.CreateCircle(System.Drawing.Pens.Aquamarine, System.Drawing.Brushes.BurlyWood, 24));

 var ctFact = new ProjNet.CoordinateSystems.Transformations.CoordinateTransformationFactory();
 l.CoordinateTransformation = ctFact.CreateFromCoordinateSystems(ProjNet.CoordinateSystems.GeographicCoordinateSystem.WGS84, ProjNet.CoordinateSystems.ProjectedCoordinateSystem.WebMercator);
 l.ReverseCoordinateTransformation = ctFact.CreateFromCoordinateSystems(ProjNet.CoordinateSystems.ProjectedCoordinateSystem.WebMercator, ProjNet.CoordinateSystems.GeographicCoordinateSystem.WGS84);

 m.Layers.Add(new SharpMap.Layers.TileLayer(BruTile.Predefined.KnownTileSources.Create(),"b"));
 m.Layers.Add(l);

 var e = new GeoAPI.Geometries.Envelope(-0.02, 0.02, 51.478885 - 0.01, 51.478885 + 0.01);
 e = GeoAPI.CoordinateSystems.Transformations.GeometryTransform.TransformBox(e,
 l.CoordinateTransformation.MathTransform);
 m.ZoomToBox(e);
 m.GetMap().Save("Greenwich.png", System.Drawing.Imaging.ImageFormat.Png);

 }
 }
}