/// <summary>
/// Gets the host of a hosted element, if any.
/// </summary>
/// <param name="hostedElement">The hosted element.</param>
/// <returns>The host, or null.</returns>
static public IFCElement GetHost(IFCElement hostedElement)
{
if (hostedElement == null)
{
return(null);
}
IFCFeatureElementSubtraction fillsOpening = hostedElement.FillsOpening;
if (fillsOpening == null)
{
return(null);
}
return(fillsOpening.VoidsElement);
}
/// <summary>
/// Gets the IFCElement associated via an IfcRelConnectsPortToElement handle to an IFCPort.
/// </summary>
/// <param name="ifcRelConnectsPortToElement">The IfcRelConnectsPortToElement handle.</param>
/// <returns>The IFCElement class corresponding to the IfcElement handle, if any.</returns>
static public IFCElement ProcessRelatedElement(IFCAnyHandle ifcRelConnectsPortToElement)
{
// Receiving apps need to decide whether to post an error or not.
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcRelConnectsPortToElement))
{
return(null);
}
IFCAnyHandle ifcRelatedElement = IFCAnyHandleUtil.GetInstanceAttribute(ifcRelConnectsPortToElement, "RelatedElement");
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcRelatedElement))
{
return(null);
}
IFCElement relatedElement = IFCElement.ProcessIFCElement(ifcRelatedElement);
return(relatedElement);
}
/// <summary>
/// Gets the elements hosted by this host element, if any.
/// </summary>
/// <param name="hostElement">The host element.</param>
/// <returns>The hosted elements, or null. An unfilled opening counts as a hosted element.</returns>
static public IList <IFCElement> GetHostedElements(IFCElement hostElement)
{
if (hostElement == null)
{
return(null);
}
ICollection <IFCFeatureElementSubtraction> openings = hostElement.Openings;
if (openings == null || (openings.Count == 0))
{
return(null);
}
IList <IFCElement> hostedElements = new List <IFCElement>();
foreach (IFCFeatureElementSubtraction opening in openings)
{
if (!(opening is IFCOpeningElement))
{
hostedElements.Add(opening);
}
else
{
IFCOpeningElement openingElement = opening as IFCOpeningElement;
if (openingElement.FilledByElement != null)
{
hostedElements.Add(openingElement.FilledByElement);
}
else
{
hostedElements.Add(openingElement);
}
}
}
return(hostedElements);
}
