private List <IntPtr> findElements(List <IntPtr> listPropSets)
{
var objectList = new List <IntPtr>();
foreach (IntPtr iPropertySetInstance in listPropSets)
{
// find element that contains the propertySet
if (iPropertySetInstance != IntPtr.Zero)
{
IntPtr iEntityCount;
IntPtr relDefProperties = getAggregator("ifcRelDefinesByProperties", out iEntityCount);
foreach (IntPtr iRelDefPropInstance in findEntity(relDefProperties, iEntityCount))
{
IntPtr propertySetDef;
_ifcEngine.GetAttribute(iRelDefPropInstance, "RelatingPropertyDefinition", IfcEngine.SdaiType.Instance, out propertySetDef);
if (propertySetDef.Equals(iPropertySetInstance))
{
IntPtr objectInstances;
_ifcEngine.GetAttribute(iRelDefPropInstance, "RelatedObjects", IfcEngine.SdaiType.Aggregation, out objectInstances);
var iObjectCount = _ifcEngine.GetMemberCount(objectInstances);
foreach (IntPtr iObjectInstance in findEntity(objectInstances, iObjectCount))
{
objectList.Add(iObjectInstance);
}
}
}
}
}
return(objectList);
}
// find propertySet that contains the property
private List <IntPtr> findPropertySets(IntPtr iPropertyInstance)
{
var listPropSetInst = new List <IntPtr>();
if (iPropertyInstance != IntPtr.Zero)
{
IntPtr iPropertySetsCount;
IntPtr propertySets = getAggregator("ifcPropertySet", out iPropertySetsCount);
foreach (IntPtr iPropertySetInstance in findEntity(propertySets, iPropertySetsCount))
{
IntPtr propertiesInstance;
_ifcEngine.GetAttribute(iPropertySetInstance, "HasProperties", IfcEngine.SdaiType.Aggregation, out propertiesInstance);
if (propertiesInstance != IntPtr.Zero)
{
var iPropertiesCount = _ifcEngine.GetMemberCount(propertiesInstance);
foreach (IntPtr iPropertyInst in findEntity(propertiesInstance, iPropertiesCount))
{
if (iPropertyInst.Equals(iPropertyInstance))
{
listPropSetInst.Add(iPropertySetInstance);
}
}
}
}
}
return(listPropSetInst);
}
private void RetrieveObjects(IntPtr ifcModel, string sObjectSPFFName, string ObjectDisplayName)
{
IntPtr ifcObjectInstances = _ifcEngine.GetEntityExtent(ifcModel, ObjectDisplayName),
noIfcObjectIntances = _ifcEngine.GetMemberCount(ifcObjectInstances);
if (noIfcObjectIntances != IntPtr.Zero)
{
IFCItem NewItem = null;
if (_rootIfcItem == null)
{
_rootIfcItem = new IFCItem();
_rootIfcItem.CreateItem(null, IntPtr.Zero, "", ObjectDisplayName, "", "");
NewItem = _rootIfcItem;
}
else
{
IFCItem LastItem = _rootIfcItem;
while (LastItem != null)
{
if (LastItem.next == null)
{
LastItem.next = new IFCItem();
LastItem.next.CreateItem(null, IntPtr.Zero, "", ObjectDisplayName, "", "");
NewItem = LastItem.next;
break;
}
else
{
LastItem = LastItem.next;
}
}
;
}
for (int i = 0; i < noIfcObjectIntances.ToInt32(); ++i)
{
IntPtr ifcObjectIns = IntPtr.Zero;
_ifcEngine.GetAggregationElement(ifcObjectInstances, i, IfcEngine.SdaiType.Instance, out ifcObjectIns);
IntPtr value = IntPtr.Zero;
_ifcEngine.GetAttribute(ifcObjectIns, "GlobalId", IfcEngine.SdaiType.Unicode, out value);
string globalID = Marshal.PtrToStringUni((IntPtr)value);
value = IntPtr.Zero;
_ifcEngine.GetAttribute(ifcObjectIns, "Name", IfcEngine.SdaiType.Unicode, out value);
string name = Marshal.PtrToStringUni((IntPtr)value);
value = IntPtr.Zero;
_ifcEngine.GetAttribute(ifcObjectIns, "Description", IfcEngine.SdaiType.Unicode, out value);
string description = Marshal.PtrToStringUni((IntPtr)value);
IFCItem subItem = new IFCItem();
subItem.CreateItem(NewItem, ifcObjectIns, ObjectDisplayName, globalID, name, description);
}
}
}
private void CreateProjectTreeItems()
{
var iEntityID = IFCEngine.GetEntityExtent(IfcModel, "IfcProject");
var iEntitiesCount = IFCEngine.GetMemberCount(iEntityID);
for (int iEntity = 0; iEntity < iEntitiesCount.ToInt32(); iEntity++)
{
IFCEngine.GetAggregationElement(iEntityID, iEntity, IfcEngine.SdaiType.Instance, out IntPtr iInstance);
IFCTreeItem ifcTreeItem = new IFCTreeItem();
ifcTreeItem.instance = iInstance;
CreateTreeItem(null, ifcTreeItem);
AddChildrenTreeItems(ifcTreeItem, iInstance, "IfcSite");
}
}