private void CreateRenderTask(DataRect visible, Rect output)
{
lock (this)
{
_bitmapInvalidated = true;
if (_activeRequest != null)
{
_activeRequest.Cancel();
}
_pendingRequest = new RenderRequest(_nextRequestId++, visible, output);
_renderAction.InvokeAction(RenderThreadFunc);
}
}
protected override void OnPlotterDetaching(Plotter plotter)
{
base.OnPlotterDetaching(plotter);
_activeRequest?.Cancel();
}