public override void Render(Feature scrapFeature)
{
if(!(Visible && _layer.IsVisibleAt(Renderer.Zoom)))
return;
var tStart = Environment.TickCount;
Renderer.Graphics.SmoothingMode = SmoothingMode;
try
{
var cnt = 0;
foreach (var feature in _layer.GetFeatures(_featureType, _layer, Renderer.Window))
{
Renderer.Context.Variables[Renderer.FEATURE_VAR] = feature;
if (cnt >= _layer.MaxRender)
return;
Renderer.FeatureVarResolver.Feature = feature;
Renderer.Render(Renderers, feature);
cnt++;
}
FeatureCount = cnt;
Renderer.PerformLayerRendered(new LayerEventArgs(_layer));
}
catch (Exception ex)
{
var args = new LayerFailedEventArgs(_layer, ex);
Renderer.PerformLayerFailed(args);
}
finally
{
Renderer.FeatureVarResolver.Feature = null; //restore old feature
}
RenderCount++;
RenderTime = new TimeSpan((Environment.TickCount - tStart) * 10000);
}
void Renderer_LayerFailed(object sender, LayerFailedEventArgs e)
{
var ret = MessageBox.Show(string.Format("Rendering of layer '{0}' failed: {1}\r\nContinue?", e.Layer.NodePath, e.Exception.Message), Application.ProductName, MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
if (ret == DialogResult.No)
e.Cancel = true;
}