|
public static Draw ( |
||
| canvas | ||
| viewport | IViewport | |
| style | IStyle | |
| geometry | IGeometry | |
| return | void | |
public bool Draw(SKCanvas canvas, IReadOnlyViewport viewport, ILayer layer, IFeature feature, IStyle style, ISymbolCache symbolCache, long iteration)
{
try
{
var vectorStyle = (VectorStyle)style;
var opacity = (float)(layer.Opacity * style.Opacity);
switch (feature)
{
case RectFeature rectFeature:
PolygonRenderer.Draw(canvas, viewport, vectorStyle, rectFeature, rectFeature.Rect.ToPolygon(), opacity);
break;
case PointFeature pointFeature:
SymbolStyleRenderer.DrawSymbol(canvas, viewport, layer, pointFeature.Point.X, pointFeature.Point.Y, new SymbolStyle { Outline = vectorStyle.Outline, Fill = vectorStyle.Fill, Line = vectorStyle.Line });
break;
case GeometryFeature geometryFeature:
switch (geometryFeature.Geometry)
{
case GeometryCollection collection:
for (var i = 0; i < collection.NumGeometries; i++)
Draw(canvas, viewport, layer, new GeometryFeature(collection.GetGeometryN(i)), style, symbolCache, iteration);
break;
case Point point:
Draw(canvas, viewport, layer, new PointFeature(point.X, point.Y), style, symbolCache, iteration);
break;
case Polygon polygon:
PolygonRenderer.Draw(canvas, viewport, vectorStyle, feature, polygon, opacity, symbolCache);
break;
case LineString lineString:
LineStringRenderer.Draw(canvas, viewport, vectorStyle, lineString, opacity);
break;
default:
throw new ArgumentException("Unknown geometry of Feature");
}
break;
}
}
catch (Exception ex)
{
Logger.Log(LogLevel.Error, ex.Message, ex);
}
return true;
}
private void RenderFeature(SKCanvas canvas, IViewport viewport, IStyle style, IFeature feature)
{
if (feature.Geometry is Point)
{
PointRenderer.Draw(canvas, viewport, style, feature, _symbolTextureCache);
}
else if (feature.Geometry is LineString)
{
LineStringRenderer.Draw(canvas, viewport, style, feature);
}
else if (feature.Geometry is Polygon)
{
PolygonRenderer.Draw(canvas, viewport, style, feature);
}
else if (feature.Geometry is IRaster)
{
RasterRenderer.Draw(canvas, viewport, style, feature, _tileTextureCache, _currentIteration);
}
}
