private static void RenderFeature(IViewport viewport, Canvas canvas, IFeature feature, IStyle style, SymbolCache symbolCache, bool rasterizing)
{
if (style is LabelStyle)
{
var labelStyle = (LabelStyle)style;
canvas.Children.Add(LabelRenderer.RenderLabel(feature.Geometry.GetBoundingBox().GetCentroid(),
labelStyle, viewport, labelStyle.GetLabelText(feature)));
}
else
{
Shape renderedGeometry;
object cachedObject;
if (feature.RenderedGeometry.TryGetValue(style, out cachedObject))
{
renderedGeometry = (Shape)cachedObject; // Has to be Shape
PositionGeometry(renderedGeometry, viewport, style, feature);
}
else
{
renderedGeometry = RenderGeometry(viewport, style, feature, symbolCache);
if (!rasterizing)
{
feature.RenderedGeometry[style] = renderedGeometry;
}
}
if (!canvas.Children.Contains(renderedGeometry))
{
// Adding twice can happen when a single feature has two identical styles
canvas.Children.Add(renderedGeometry);
}
}
}
private static void RenderFeature(IReadOnlyViewport viewport, Canvas canvas, IFeature feature, IStyle style, SymbolCache symbolCache, bool rasterizing)
{
//// Check, if we have a special renderer for this style
//if (StyleRenderers.ContainsKey(style.GetType()))
//{
// // We have a special renderer, so try, if it could draw this
// var result = ((IXamlStyleRenderer)StyleRenderers[style.GetType()]).Draw(canvas, viewport, layer, feature, style, symbolCache);
// // Was it drawn?
// if (result)
// // Yes, special style renderer drawn correct
// return;
//}
//// No special style renderer handled this up to now, than try standard renderers
if (style is LabelStyle)
{
var labelStyle = (LabelStyle)style;
var labelText = labelStyle.GetLabelText(feature);
if (string.IsNullOrEmpty(labelText))
{
return;
}
canvas.Children.Add(LabelRenderer.RenderLabel(feature.Geometry.BoundingBox.Centroid,
labelStyle, viewport, labelText));
}
else
{
Shape renderedGeometry;
if (feature.RenderedGeometry.TryGetValue(style, out var cachedObject))
{
renderedGeometry = (Shape)cachedObject; // Has to be Shape
PositionGeometry(renderedGeometry, viewport, style, feature);
}
else
{
renderedGeometry = RenderGeometry(viewport, style, feature, symbolCache);
if (!rasterizing)
{
feature.RenderedGeometry[style] = renderedGeometry;
}
}
if (!canvas.Children.Contains(renderedGeometry))
{
// Adding twice can happen when a single feature has two identical styles
canvas.Children.Add(renderedGeometry);
}
}
}
public static void RenderLayer(Canvas target, IViewport viewport, ILayer layer, bool rasterizing = false)
{
if (layer.Enabled == false)
{
return;
}
if (layer is LabelLayer)
{
var labelLayer = layer as LabelLayer;
target.Children.Add(labelLayer.UseLabelStacking
? StackedLabelLayerRenderer.Render(viewport, labelLayer)
: LabelRenderer.RenderLabelLayer(viewport, labelLayer));
}
else
{
target.Children.Add(RenderVectorLayer(viewport, layer, rasterizing));
}
}
