public static void IterateLayer(Graphics graphics, IViewport viewport, ILayer layer,
Action <IViewport, IStyle, IFeature> callback)
{
if (layer.Enabled == false)
{
return;
}
if (layer.MinVisible > viewport.RenderResolution)
{
return;
}
if (layer.MaxVisible < viewport.RenderResolution)
{
return;
}
if (layer is LabelLayer)
{
GdiLabelRenderer.Render(graphics, viewport, layer as LabelLayer);
}
else
{
IterateVectorLayer(viewport, layer, callback);
}
}
private static void Render(Graphics graphics, IViewport viewport, IEnumerable <ILayer> layers)
{
foreach (var layer in layers)
{
if (layer.Enabled &&
layer.MinVisible <= viewport.Resolution &&
layer.MaxVisible >= viewport.Resolution)
{
if (layer is LabelLayer)
{
GdiLabelRenderer.Render(graphics, viewport, layer as LabelLayer);
}
else
{
RenderLayer(graphics, viewport, layer);
}
}
}
}