// Generate a trigger shape directly in the center bottom position of the specified callout shape.
public static PowerPoint.Shape GenerateTriggerShapeWithReferenceCallout(PowerPointSlide currentSlide, PowerPoint.Shape callout)
{
float left = ShapeUtil.GetCenterPoint(callout).X - TooltipsLabConstants.TriggerShapeDefaultWidth / 2;
float top = ShapeUtil.GetBottom(callout) + TooltipsLabConstants.TriggerShapeAndCalloutSpacing;
PowerPoint.Shape triggerShape = currentSlide.Shapes.AddShape(
TooltipsLabConstants.TriggerShape,
left,
top,
TooltipsLabConstants.TriggerShapeDefaultWidth,
TooltipsLabConstants.TriggerShapeDefaultHeight);
ShapeUtil.FormatTriggerShapeToDefaultStyle(triggerShape);
return(triggerShape);
}