private void RenderInternal(D2D1.Factory factory, D2D1.RenderTarget rt, Map map,
Envelope envelope, Rendering.Thematics.ITheme theme)
{
var ds = new FeatureDataSet();
lock (_syncRoot)
{
DataSource.Open();
DataSource.ExecuteIntersectionQuery(envelope, ds);
DataSource.Close();
}
var scale = map.MapScale;
var zoom = map.Zoom;
foreach (FeatureDataTable features in ds.Tables)
{
// Transform geometries if necessary
if (CoordinateTransformation != null)
{
for (var i = 0; i < features.Count; i++)
{
features[i].Geometry = ToTarget(features[i].Geometry);
}
}
//Linestring outlines is drawn by drawing the layer once with a thicker line
//before drawing the "inline" on top.
if (Style.EnableOutline)
{
for (int i = 0; i < features.Count; i++)
{
var feature = features[i];
var outlineStyle = theme.GetStyle(feature) as VectorStyle;
if (outlineStyle == null) continue;
if (!(outlineStyle.Enabled && outlineStyle.EnableOutline)) continue;
double compare = outlineStyle.VisibilityUnits == VisibilityUnits.ZoomLevel ? zoom : scale;
if (!(outlineStyle.MinVisible <= compare && compare <= outlineStyle.MaxVisible)) continue;
using (var sdxStyle = SharpDXVectorStyle.FromVectorStyle(rt, factory, outlineStyle))
{
if (sdxStyle != null)
{
//Draw background of all line-outlines first
if (feature.Geometry is ILineString)
{
SharpDXVectorRenderer.DrawLineString(rt, factory, (ILineString)feature.Geometry,
sdxStyle.Outline, sdxStyle.OutlineWidth, sdxStyle.OutlineStrokeStyle,
map, sdxStyle.LineOffset);
}
else if (feature.Geometry is IMultiLineString)
{
SharpDXVectorRenderer.DrawMultiLineString(rt, factory, (IMultiLineString)feature.Geometry,
sdxStyle.Outline, sdxStyle.OutlineWidth, sdxStyle.OutlineStrokeStyle,
map, sdxStyle.LineOffset);
}
}
}
}
}
var sdxVectorStyles = new Dictionary<VectorStyle, SharpDXVectorStyle>();
for (var i = 0; i < features.Count; i++)
{
var feature = features[i];
var style = theme.GetStyle(feature);
if (style == null) continue;
if (!style.Enabled) continue;
var compare = style.VisibilityUnits == VisibilityUnits.ZoomLevel ? zoom : scale;
if (!(style.MinVisible <= compare && compare <= style.MaxVisible)) continue;
IEnumerable<IStyle> stylesToRender = GetStylesToRender(style);
if (stylesToRender == null)
return;
foreach (var styleToRender in stylesToRender)
{
if (!styleToRender.Enabled) continue;
if (!(styleToRender is VectorStyle)) continue;
if (!(style.MinVisible <= compare && compare <= style.MaxVisible)) continue;
var vstyle = (VectorStyle) styleToRender;
SharpDXVectorStyle sdxStyle;
if (!sdxVectorStyles.TryGetValue(vstyle, out sdxStyle))
{
sdxStyle = SharpDXVectorStyle.FromVectorStyle(rt, factory, vstyle);
sdxVectorStyles.Add(vstyle, sdxStyle);
}
RenderGeometry(factory, rt, map, feature.Geometry, sdxStyle);
}
}
foreach (var value in sdxVectorStyles.Values)
value.Dispose();
}
}