private void DrawMultiLineString(MultiLineString mLine, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
foreach (var line in mLine.Geometries)
{
DrawLineString(line, style, viewInfo, g);
}
}
private void DrawMultiPolygon(MultiPolygon mPolygon, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
foreach (var polygon in mPolygon.Geometries)
{
DrawPolygon(polygon, style, viewInfo, g);
}
}
private void DrawPolygon(Polygon polygon, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
if (style.StrokePen != null || style.FillBrush != null)
{
var p = viewInfo.RingToPointFList(polygon.ExteriorRing);
var path = new GraphicsPath(FillMode.Winding);
//Draw external ring
path.AddPolygon(p);
//Cut out inner polygons
int numRings = polygon.InteriorRings.Count;
for (int i = 0; i < numRings; i++)
{
p = viewInfo.RingToPointFList(polygon.InteriorRings[i]);
path.AddPolygon(p);
}
if (style.FillBrush != null)
{
g.FillPath(style.FillBrush, path);
}
if (style.StrokePen != null)
{
g.DrawPath(style.StrokePen, path);
}
}
}
private void DrawLineString(LineString line, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
if (style.StrokePen != null)
{
g.DrawLines(style.StrokePen, viewInfo.RingToPointFList(line.Vertices));
}
}
private void DrawMutiPoint(MultiPoint mPoint, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
foreach (var point in mPoint.Geometries)
{
var p = viewInfo.LatLongToPointF(point.Coordinate);
DrawPoint(p, style, g);
}
}
private void DrawGeometery(Geometry geom, Dictionary <string, DrawingStyle> styles, ViewInfo viewInfo, Graphics g)
{
DrawingStyle s = null;
if (styles != null && !string.IsNullOrEmpty(geom.StyleKey) && styles.ContainsKey(geom.StyleKey))
{
s = styles[geom.StyleKey];
}
else if (_defaultStyle != null)
{
s = _defaultStyle;
}
DrawGeometery(geom, s, viewInfo, g);
}
private void DrawGeometery(Geometry geom, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
if (style != null)
{
switch (geom.STGeometryType())
{
case GeometryType.Point:
DrawPoint(geom as Point, style, viewInfo, g);
break;
case GeometryType.LineString:
DrawLineString(geom as LineString, style, viewInfo, g);
break;
case GeometryType.Polygon:
DrawPolygon(geom as Polygon, style, viewInfo, g);
break;
case GeometryType.MultiPoint:
DrawMutiPoint(geom as MultiPoint, style, viewInfo, g);
break;
case GeometryType.MultiLineString:
DrawMultiLineString(geom as MultiLineString, style, viewInfo, g);
break;
case GeometryType.MultiPolygon:
DrawMultiPolygon(geom as MultiPolygon, style, viewInfo, g);
break;
case GeometryType.GeometryCollection:
int numGeoms = geom.STNumGeometries();
var gc = geom as GeometryCollection;
for (int i = 1; i <= numGeoms; i++)
{
DrawGeometery(gc.Geometries[i], style, viewInfo, g);
}
break;
default:
break;
}
}
}
private void DrawPoint(PointF point, DrawingStyle style, Graphics g)
{
if (style != null && point != null)
{
if (style.Icon != null)
{
var x = (float)(point.X - style.Icon.Width / 2);
var y = (float)(point.Y - style.Icon.Height / 2);
g.DrawImage(style.Icon, x, y);
}
else if (style.IconBrush != null)
{
g.FillEllipse(style.IconBrush, point.X - 15, point.Y - 15, 30, 30);
if (style.StrokePen != null)
{
g.DrawEllipse(style.StrokePen, point.X - 15, point.Y - 15, 30, 30);
}
}
}
}
public SpatialDataRenderEngine(DrawingStyle defaultStyle, bool isHighSpeed)
{
_defaultStyle = defaultStyle;
_isHighSpeed = isHighSpeed;
}
public SpatialDataRenderEngine(DrawingStyle defaultStyle)
{
_defaultStyle = defaultStyle;
}
public SpatialDataRenderEngine(ShapeStyle defaultStyle, bool isHighSpeed)
{
_defaultStyle = new DrawingStyle(defaultStyle);
_isHighSpeed = isHighSpeed;
}
public SpatialDataRenderEngine(ShapeStyle defaultStyle)
{
_defaultStyle = new DrawingStyle(defaultStyle);
}
private void DrawPoint(Point point, DrawingStyle style, ViewInfo viewInfo, Graphics g)
{
DrawPoint(viewInfo.LatLongToPointF(point.Coordinate), style, g);
}
