protected override void OnRender(Rectangle[] rois, int startIndex, int length)
{
if (length == 0)
return;
if (this.CustomRegionHandling && FullImageSelected(base.SrcArgs.Bounds))
{
if (this.newRender)
{
this.newRender = false;
this.OnRenderRegion(SliceRectangles(new Rectangle[] { this.EnvironmentParameters.GetSelection(base.SrcArgs.Bounds).GetBoundsInt() }), base.DstArgs, base.SrcArgs);
}
}
else
{
this.OnRenderRegion(SliceRectangles(rois.Skip<Rectangle>(startIndex).Take<Rectangle>(length).ToArray<Rectangle>()), base.DstArgs, base.SrcArgs);
}
}