public ImageMapLine(SharpMap.Geometries.Geometry geom, SharpMap.Map map, ImageMapStyle mapStyle)
: base(geom, map)
{
PointF[] transLine = (geom as LineString).TransformToImage(map);
map.MapTransform.TransformPoints(transLine);
List <PointF> tempPoly = new List <PointF>();
for (int i = 0; i < transLine.Length; i++)
{
PointF p = transLine[i];
tempPoly.Add(new System.Drawing.PointF((p.X - mapStyle.Line.BufferWidth), (p.Y + mapStyle.Line.BufferWidth)));
tempPoly.Add(new System.Drawing.PointF((p.X + mapStyle.Line.BufferWidth), (p.Y + mapStyle.Line.BufferWidth)));
}
for (int i = transLine.Length - 1; i > -1; i--)
{
PointF p = transLine[i];
tempPoly.Add(new System.Drawing.PointF((p.X - mapStyle.Line.BufferWidth), (p.Y - mapStyle.Line.BufferWidth)));
tempPoly.Add(new System.Drawing.PointF((p.X + mapStyle.Line.BufferWidth), (p.Y - mapStyle.Line.BufferWidth)));
}
if (!tempPoly[0].Equals(tempPoly[tempPoly.Count - 1]))
{
tempPoly.Add(tempPoly[0]);
}
PointF[] tp = tempPoly.ToArray();
tp = ImageMapUtilities.ClipPolygon(tp, map.Size.Width, map.Size.Height);
foreach (PointF pf in tp)
{
coords.Add(pf);
}
}
public ImageMapPoint(SharpMap.Geometries.Geometry geom, SharpMap.Map map, ImageMapStyle mapStyle)
: base(geom, map)
{
this.Radius = mapStyle.Point.Radius;
SharpMap.Geometries.Point P = geom as SharpMap.Geometries.Point;
PointF pf = map.WorldToImage(P);
map.MapTransform.TransformPoints(new PointF[] { pf });
center = new System.Drawing.Point((int)pf.X, (int)pf.Y);
}
private void CreateFeatureElements(List <ImageMapFeatureElement> targetList, ILayer lyr, Map map)
{
if (map.Center == null)
{
throw (new ApplicationException("Cannot render map. View center not specified"));
}
IDataLayer dataLayer = lyr as IDataLayer;
if (dataLayer == null)
{
return;
}
IProvider dataSource = dataLayer.DataSource;
if (this.ImageMapStyle != null || this._themeProvider != null)
{
FeatureDataSet ds = new FeatureDataSet();
dataSource.Open();
dataSource.ExecuteIntersectionQuery(map.Envelope, ds);
dataSource.Close();
if (ds.Tables.Count > 0)
{
FeatureDataTable features = ds.Tables[0];
for (int k = 0; k < features.Count; k++)
{
FeatureDataRow fdr = features[k];
ImageMapStyle useStyle =
this._themeProvider != null?this._themeProvider(lyr, fdr) : this.ImageMapStyle;
if (useStyle == null ||
!useStyle.Enabled ||
map.Zoom < useStyle.MinVisible ||
map.Zoom > useStyle.MaxVisible)
{
continue;
}
AddFeatureElement(targetList, map, lyr, fdr.Geometry, fdr, useStyle);
}
}
}
}
public static ImageMapFeatureElement CreateImageMapElement(SharpMap.Geometries.Geometry geom, SharpMap.Map map, ImageMapStyle mapStyle)
{
if (!mapStyle.Enabled)
{
return(null);
}
if (geom as Polygon != null &&
mapStyle.Polygon.Enabled &&
map.Zoom > mapStyle.Polygon.MinVisible &&
map.Zoom < mapStyle.Polygon.MaxVisible)
{
return(new ImageMapPolygon(geom, map));
}
else if (geom as LineString != null &&
mapStyle.Line.Enabled &&
map.Zoom > mapStyle.Line.MinVisible &&
map.Zoom < mapStyle.Line.MaxVisible)
{
return(new ImageMapLine(geom, map, mapStyle));
}
else if (geom as SharpMap.Geometries.Point != null &&
mapStyle.Point.Enabled &&
map.Zoom > mapStyle.Point.MinVisible &&
map.Zoom < mapStyle.Point.MaxVisible)
{
return(new ImageMapPoint(geom, map, mapStyle));
}
return(null);
}
private void AddFeatureElement(List <ImageMapFeatureElement> storage, Map map, ILayer lyr, Geometry geometry, FeatureDataRow fdr, ImageMapStyle useStyle)
{
if (geometry as GeometryCollection != null)
{
foreach (Geometry geom in geometry as GeometryCollection)
{
AddFeatureElement(storage, map, lyr, geom, fdr, useStyle);
}
}
else
{
ImageMapFeatureElement imel = ImageMapFeatureElement.CreateImageMapElement(geometry, map, useStyle);
if (imel != null)
{
foreach (KeyValuePair <string, Func <ILayer, FeatureDataRow, string> > attrAccessor in AttributeProviders)
{
string attrVal = attrAccessor.Value(lyr, fdr);
if (!string.IsNullOrEmpty(attrVal))
{
imel.AddAttribute(attrAccessor.Key, attrVal);
}
}
storage.Add(imel);
}
}
}
