// 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 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);
}
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 CreateTreeItem(IFCTreeItem ifcParent, IFCTreeItem ifcItem)
{
IntPtr ifcType = IFCEngine.GetInstanceType(ifcItem.instance);
string strIfcType = Marshal.PtrToStringAnsi(ifcType);
IFCEngine.GetAttribute(ifcItem.instance, "Name", IfcEngine.SdaiType.Unicode, out IntPtr name);
string strName = Marshal.PtrToStringUni(name);
IFCEngine.GetAttribute(ifcItem.instance, "Description", IfcEngine.SdaiType.Unicode, out IntPtr description);
string strDescription = Marshal.PtrToStringUni(description);
string strItemText = "'" + (string.IsNullOrEmpty(strName) ? "<name>" : strName) +
"', '" + (string.IsNullOrEmpty(strDescription) ? "<description>" : strDescription) +
"' (" + strIfcType + ")";
if ((ifcParent != null) && (ifcParent.treeNode != null))
{
ifcItem.treeNode = new TreeViewItem()
{
Header = strItemText
};
ifcParent.treeNode.Items.Add(ifcItem.treeNode);
}
else
{
ifcItem.treeNode = new TreeViewItem()
{
Header = strItemText
};
treeControl.Items.Add(ifcItem.treeNode);
}
if (ifcItem.ifcItem == null)
{
// item without visual representation
Random rand = new Random();
byte[] colorValue = new byte[4];
rand.NextBytes(colorValue);
var color = System.Windows.Media.Color.FromArgb(
(byte)(255 - colorValue[0] * 255),
(byte)(colorValue[1] * 255),
(byte)(colorValue[2] * 255),
(byte)(colorValue[3] * 255));
ifcItem.treeNode.Foreground = new SolidColorBrush(color);//Colors.Gray
}
ifcItem.treeNode.Tag = ifcItem;
}
/// <summary>
/// Helper
/// </summary>
/// <param name="ifcParent"></param>
/// <param name="iParentInstance"></param>
/// <param name="strEntityName"></param>
private void AddChildrenTreeItems(IFCTreeItem ifcParent, IntPtr iParentInstance, string strEntityName)
{
// check for decomposition
IntPtr decompositionInstance;
_ifcEngine.GetAttribute(iParentInstance, "IsDecomposedBy", IfcEngine.SdaiType.Aggregation, out decompositionInstance);
if (decompositionInstance == IntPtr.Zero)
{
return;
}
var iDecompositionsCount = _ifcEngine.GetMemberCount(decompositionInstance);
for (int iDecomposition = 0; iDecomposition < iDecompositionsCount.ToInt32(); iDecomposition++)
{
IntPtr iDecompositionInstance = IntPtr.Zero;
_ifcEngine.GetAggregationElement(decompositionInstance, iDecomposition, IfcEngine.SdaiType.Instance, out iDecompositionInstance);
if (!IsInstanceOf(iDecompositionInstance, "IFCRELAGGREGATES"))
{
continue;
}
IntPtr objectInstances;
_ifcEngine.GetAttribute(iDecompositionInstance, "RelatedObjects", IfcEngine.SdaiType.Aggregation, out objectInstances);
var iObjectsCount = _ifcEngine.GetMemberCount(objectInstances);
for (int iObject = 0; iObject < iObjectsCount.ToInt32(); iObject++)
{
IntPtr iObjectInstance = IntPtr.Zero;
_ifcEngine.GetAggregationElement(objectInstances, iObject, IfcEngine.SdaiType.Instance, out iObjectInstance);
if (!IsInstanceOf(iObjectInstance, strEntityName))
{
continue;
}
IFCTreeItem ifcTreeItem = new IFCTreeItem();
ifcTreeItem.instance = iObjectInstance;
CreateTreeItem(ifcParent, ifcTreeItem);
switch (strEntityName)
{
case "IfcSite": {
AddChildrenTreeItems(ifcTreeItem, iObjectInstance, "IfcBuilding");
}
break;
case "IfcBuilding": {
AddChildrenTreeItems(ifcTreeItem, iObjectInstance, "IfcBuildingStorey");
}
break;
case "IfcBuildingStorey": {
AddElementTreeItems(ifcTreeItem, iObjectInstance);
}
break;
default:
break;
}
} // for (int iObject = ...
} // for (int iDecomposition = ...
}