/// <summary>
/// Within the slide, for all sections that have been "passed", replace their visual agenda image shape with
/// an image of the end slide of the section.
/// </summary>
private static void ReplaceVisualImagesWithAfterZoomOutImages(PowerPointSlide slide, int sectionIndex)
{
var indexedShapes = new Dictionary<int, Shape>();
slide.Shapes.Cast<Shape>()
.Where(AgendaShape.WithPurpose(ShapePurpose.VisualAgendaImage))
.ToList()
.ForEach(shape => indexedShapes.Add(AgendaShape.Decode(shape).Section.Index, shape));
for (int i = 2; i < sectionIndex; ++i)
{
var imageShape = indexedShapes[i];
var sectionEndSlide = FindSectionLastNonAgendaSlide(i);
var snapshotShape = slide.InsertExitSnapshotOfSlide(sectionEndSlide);
snapshotShape.Name = imageShape.Name;
Graphics.SyncShape(imageShape, snapshotShape, pickupShapeFormat: true, pickupTextContent: false, pickupTextFormat: false);
imageShape.Delete();
}
}