public static void AddObjectToGroup(this IfcGroup gr, IfcObjectDefinition obj)
{
IModel model = gr.Model;
IfcRelAssignsToGroup relation = gr.IsGroupedBy ?? model.Instances.New <IfcRelAssignsToGroup>(rel => rel.RelatingGroup = gr);
relation.RelatedObjects.Add(obj);
}
public static IEnumerable <T> GetGroupedObjects <T>(this IfcGroup gr) where T : IfcObjectDefinition
{
IfcRelAssignsToGroup relation = gr.IsGroupedBy;
if (gr.IsGroupedBy != null)
{
return(relation.RelatedObjects.OfType <T>());
}
return(new List <T>());
}
public static IEnumerable <IfcObjectDefinition> GetGroupedObjects(this IfcGroup gr)
{
IfcRelAssignsToGroup relation = gr.IsGroupedBy;
if (gr.IsGroupedBy != null)
{
return(relation.RelatedObjects);
}
return(new List <IfcObjectDefinition>());
}
public static void AddObjectToGroup(this IfcGroup gr, IfcObjectDefinition obj)
{
IModel model = GetModel(gr);
IfcRelAssignsToGroup relation = gr.IsGroupedBy;
if (gr.IsGroupedBy == null)
{
relation = model.Instances.New <IfcRelAssignsToGroup>(rel => rel.RelatingGroup = gr);
}
relation.RelatedObjects.Add(obj);
}
public static void AddObjectToGroup(this IfcGroup gr, IEnumerable <IfcObjectDefinition> objects)
{
IModel model = GetModel(gr);
IfcRelAssignsToGroup relation = gr.IsGroupedBy;
if (gr.IsGroupedBy == null)
{
relation = model.Instances.New <IfcRelAssignsToGroup>(rel => rel.RelatingGroup = gr);
}
foreach (var item in objects)
{
relation.RelatedObjects.Add(item);
}
}
public static bool RemoveObjectFromGroup(this IfcGroup gr, IfcObjectDefinition obj)
{
if (gr == null || obj == null)
{
return(false);
}
IModel model = GetModel(gr);
IfcRelAssignsToGroup relation = gr.IsGroupedBy;
if (gr.IsGroupedBy == null)
{
return(false);
}
if (!relation.RelatedObjects.Contains(obj))
{
return(false);
}
relation.RelatedObjects.Remove(obj);
return(true);
}
