private IFCItem FindIFCItem(IFCItem ifcParent, IFCTreeItem ifcTreeItem)
{
if (ifcParent == null)
{
return(null);
}
IFCItem ifcIterator = ifcParent;
while (ifcIterator != null)
{
if (ifcIterator.ifcID == ifcTreeItem.instance)
{
return(ifcIterator);
}
IFCItem ifcItem = FindIFCItem(ifcIterator.child, ifcTreeItem);
if (ifcItem != null)
{
return(ifcItem);
}
ifcIterator = ifcIterator.next;
}
return(FindIFCItem(ifcParent.child, ifcTreeItem));
}
void GetColor(IFCTreeItem ifcTreeItem)
{
if (ifcTreeItem == null)
{
throw new ArgumentException("The item is null.");
}
// C++ => getRGB_object()
IFCEngine.GetAttribute(ifcTreeItem.instance, "Representation", IfcEngine.SdaiType.Instance, out IntPtr representationInstance);
if (representationInstance == IntPtr.Zero)
{
return;
}
// C++ => getRGB_productDefinitionShape()
IFCEngine.GetAttribute(representationInstance, "Representations", IfcEngine.SdaiType.Aggregation, out IntPtr representationsInstance);
var iRepresentationsCount = IFCEngine.GetMemberCount(representationsInstance);
for (int iRepresentation = 0; iRepresentation < iRepresentationsCount.ToInt32(); iRepresentation++)
{
IFCEngine.GetAggregationElement(representationsInstance, iRepresentation, IfcEngine.SdaiType.Instance, out IntPtr iShapeInstance);
if (iShapeInstance == IntPtr.Zero)
{
continue;
}
// C++ => getRGB_shapeRepresentation()
IFCEngine.GetAttribute(iShapeInstance, "RepresentationIdentifier", IfcEngine.SdaiType.Unicode, out IntPtr representationIdentifier);
if (Marshal.PtrToStringUni(representationIdentifier) == "Body")
{
IFCEngine.GetAttribute(iShapeInstance, "Items", IfcEngine.SdaiType.Aggregation, out IntPtr itemsInstance);
var iItemsCount = IFCEngine.GetMemberCount(itemsInstance);
for (int iItem = 0; iItem < iItemsCount.ToInt32(); iItem++)
{
IFCEngine.GetAggregationElement(itemsInstance, iItem, IfcEngine.SdaiType.Instance, out IntPtr iItemInstance);
IFCEngine.GetAttribute(iItemInstance, "StyledByItem", IfcEngine.SdaiType.Instance, out IntPtr styledByItem);
if (styledByItem != IntPtr.Zero)
{
GetRGB_styledItem(ifcTreeItem, styledByItem);
}
else
{
SearchDeeper(ifcTreeItem, iItemInstance);
} // else if (iItemInstance != 0)
if (ifcTreeItem.ifcColor != null)
{
return;
}
} // for (int iItem = ...
}
} // for (int iRepresentation = ...
}
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;
}
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");
}
}
void GetRGB_styledItem(IFCTreeItem ifcTreeItem, IntPtr iStyledByItemInstance)
{
IFCEngine.GetAttribute(iStyledByItemInstance, "Styles", IfcEngine.SdaiType.Aggregation, out IntPtr stylesInstance);
var iStylesCount = IFCEngine.GetMemberCount(stylesInstance);
for (int iStyle = 0; iStyle < iStylesCount.ToInt32(); iStyle++)
{
IFCEngine.GetAggregationElement(stylesInstance, iStyle, IfcEngine.SdaiType.Instance, out IntPtr iStyleInstance);
if (iStyleInstance == IntPtr.Zero)
{
continue;
}
GetRGB_presentationStyleAssignment(ifcTreeItem, iStyleInstance);
} // for (int iStyle = ...
}
private void CreateNotReferencedTreeItems()
{
var ifcTreeItem = new IFCTreeItem();
ifcTreeItem.treeNode = new TreeViewItem()
{
Header = "Not Referenced"
};
treeControl.Items.Add(ifcTreeItem.treeNode);
ifcTreeItem.treeNode.Foreground = new SolidColorBrush(Colors.Gray);
ifcTreeItem.treeNode.Tag = ifcTreeItem;
FindNonReferencedIFCItems(IfcRoot, ifcTreeItem.treeNode);
if (ifcTreeItem.treeNode.Items.Count == 0)
{
// don't show empty Not Referenced item
treeControl.Items.Remove(ifcTreeItem.treeNode);
}
}
private void FindNonReferencedIFCItems(IFCItem ifcParent, TreeViewItem tnNotReferenced)
{
if (ifcParent == null)
{
return;
}
IFCItem ifcIterator = ifcParent;
while (ifcIterator != null)
{
if ((ifcIterator.ifcTreeItem == null) && (ifcIterator.ifcID != IntPtr.Zero))
{
string strItemText = "'" + (string.IsNullOrEmpty(ifcIterator.name) ? "<name>" : ifcIterator.name) +
"' = '" + (string.IsNullOrEmpty(ifcIterator.description) ? "<description>" : ifcIterator.description) +
"' (" + (string.IsNullOrEmpty(ifcIterator.ifcType) ? ifcIterator.globalID : ifcIterator.ifcType) + ")";
IFCTreeItem ifcTreeItem = new IFCTreeItem();
ifcTreeItem.instance = ifcIterator.ifcID;
ifcTreeItem.treeNode = new TreeViewItem()
{
Header = strItemText
};
tnNotReferenced.Items.Add(ifcTreeItem.treeNode);
ifcTreeItem.ifcItem = FindIFCItem(IfcRoot, ifcTreeItem);
ifcIterator.ifcTreeItem = ifcTreeItem;
ifcTreeItem.treeNode.Tag = ifcTreeItem;
if (ifcTreeItem.ifcItem != null)
{
ifcTreeItem.ifcItem.ifcTreeItem = ifcTreeItem;
}
}
FindNonReferencedIFCItems(ifcIterator.child, tnNotReferenced);
ifcIterator = ifcIterator.next;
}
FindNonReferencedIFCItems(ifcParent.child, tnNotReferenced);
}
unsafe void GetRGB_surfaceStyle(IFCTreeItem ifcTreeItem, IntPtr iParentInstance)
{
IFCEngine.GetAttribute(iParentInstance, "Styles", IfcEngine.SdaiType.Aggregation, out IntPtr stylesInstance);
var iStylesCount = IFCEngine.GetMemberCount(stylesInstance);
for (int iStyle = 0; iStyle < iStylesCount.ToInt32(); iStyle++)
{
IFCEngine.GetAggregationElement(stylesInstance, iStyle, IfcEngine.SdaiType.Instance, out IntPtr iStyleInstance);
if (iStyleInstance == IntPtr.Zero)
{
continue;
}
IFCEngine.GetAttribute(iStyleInstance, "SurfaceColour", IfcEngine.SdaiType.Instance, out IntPtr surfaceColour);
if (surfaceColour == IntPtr.Zero)
{
continue;
}
double R = 0;
IFCEngine.GetAttribute(surfaceColour, "Red", IfcEngine.SdaiType.Real, out *(IntPtr *)&R);
double G = 0;
IFCEngine.GetAttribute(surfaceColour, "Green", IfcEngine.SdaiType.Real, out *(IntPtr *)&G);
double B = 0;
IFCEngine.GetAttribute(surfaceColour, "Blue", IfcEngine.SdaiType.Real, out *(IntPtr *)&B);
ifcTreeItem.ifcColor = new IFCItemColor();
ifcTreeItem.ifcColor.R = (float)R;
ifcTreeItem.ifcColor.G = (float)G;
ifcTreeItem.ifcColor.B = (float)B;
return;
} // for (int iStyle = ...
}
private void CreatePropertyTreeItem(IFCTreeItem ifcParent, IFCTreeItem ifcItem, string strProperty)
{
IntPtr ifcType = IFCEngine.GetInstanceType(ifcItem.instance);
string strIfcType = Marshal.PtrToStringAnsi(ifcType);
IntPtr name;
IFCEngine.GetAttribute(ifcItem.instance, "Name", IfcEngine.SdaiType.Unicode, out name);
string strName = Marshal.PtrToStringUni(name);
string strValue = string.Empty;
switch (strProperty)
{
case "IFCQUANTITYLENGTH":
{
IFCEngine.GetAttribute(ifcItem.instance, "LengthValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
case "IFCQUANTITYAREA":
{
IFCEngine.GetAttribute(ifcItem.instance, "AreaValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
case "IFCQUANTITYVOLUME":
{
IFCEngine.GetAttribute(ifcItem.instance, "VolumeValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
case "IFCQUANTITYCOUNT":
{
IFCEngine.GetAttribute(ifcItem.instance, "CountValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
case "IFCQUANTITYWEIGTH":
{
IFCEngine.GetAttribute(ifcItem.instance, "WeigthValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
case "IFCQUANTITYTIME":
{
IFCEngine.GetAttribute(ifcItem.instance, "TimeValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
case "IFCPROPERTYSINGLEVALUE":
{
IFCEngine.GetAttribute(ifcItem.instance, "NominalValue", IfcEngine.SdaiType.Unicode, out IntPtr value);
strValue = Marshal.PtrToStringUni(value);
}
break;
default:
throw new Exception("Unknown property.");
} // switch (strProperty)
string strItemText = "'" + (string.IsNullOrEmpty(strName) ? "<name>" : strName) +
"' = '" + (string.IsNullOrEmpty(strValue) ? "<value>" : strValue) +
"' (" + 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
ifcItem.treeNode.Foreground = new SolidColorBrush(Colors.Gray);
}
}
private void AddPropertyTreeItems(IFCTreeItem ifcParent, IntPtr iParentInstance)
{
IFCEngine.GetAttribute(iParentInstance, "RelatingPropertyDefinition", IfcEngine.SdaiType.Instance, out IntPtr propertyInstances);
if (IsInstanceOf(propertyInstances, "IFCELEMENTQUANTITY"))
{
IFCTreeItem ifcPropertySetTreeItem = new IFCTreeItem();
ifcPropertySetTreeItem.instance = propertyInstances;
CreateTreeItem(ifcParent, ifcPropertySetTreeItem);
// check for quantity
IFCEngine.GetAttribute(propertyInstances, "Quantities", IfcEngine.SdaiType.Aggregation, out IntPtr quantitiesInstance);
if (quantitiesInstance == IntPtr.Zero)
{
return;
}
var iQuantitiesCount = IFCEngine.GetMemberCount(quantitiesInstance);
for (int iQuantity = 0; iQuantity < iQuantitiesCount.ToInt32(); iQuantity++)
{
IFCEngine.GetAggregationElement(quantitiesInstance, iQuantity, IfcEngine.SdaiType.Instance, out IntPtr iQuantityInstance);
IFCTreeItem ifcQuantityTreeItem = new IFCTreeItem();
ifcQuantityTreeItem.instance = iQuantityInstance;
if (IsInstanceOf(iQuantityInstance, "IFCQUANTITYLENGTH"))
{
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcQuantityTreeItem, "IFCQUANTITYLENGTH");
}
else
if (IsInstanceOf(iQuantityInstance, "IFCQUANTITYAREA"))
{
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcQuantityTreeItem, "IFCQUANTITYAREA");
}
else
if (IsInstanceOf(iQuantityInstance, "IFCQUANTITYVOLUME"))
{
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcQuantityTreeItem, "IFCQUANTITYVOLUME");
}
else
if (IsInstanceOf(iQuantityInstance, "IFCQUANTITYCOUNT"))
{
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcQuantityTreeItem, "IFCQUANTITYCOUNT");
}
else
if (IsInstanceOf(iQuantityInstance, "IFCQUANTITYWEIGTH"))
{
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcQuantityTreeItem, "IFCQUANTITYWEIGTH");
}
else
if (IsInstanceOf(iQuantityInstance, "IFCQUANTITYTIME"))
{
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcQuantityTreeItem, "IFCQUANTITYTIME");
}
} // for (int iQuantity = ...
}
else
{
if (IsInstanceOf(propertyInstances, "IFCPROPERTYSET"))
{
IFCTreeItem ifcPropertySetTreeItem = new IFCTreeItem();
ifcPropertySetTreeItem.instance = propertyInstances;
CreateTreeItem(ifcParent, ifcPropertySetTreeItem);
// check for quantity
IFCEngine.GetAttribute(propertyInstances, "HasProperties", IfcEngine.SdaiType.Aggregation, out IntPtr propertiesInstance);
if (propertiesInstance == IntPtr.Zero)
{
return;
}
var iPropertiesCount = IFCEngine.GetMemberCount(propertiesInstance);
for (int iProperty = 0; iProperty < iPropertiesCount.ToInt32(); iProperty++)
{
IFCEngine.GetAggregationElement(propertiesInstance, iProperty, IfcEngine.SdaiType.Instance, out IntPtr iPropertyInstance);
if (!IsInstanceOf(iPropertyInstance, "IFCPROPERTYSINGLEVALUE"))
{
continue;
}
IFCTreeItem ifcPropertyTreeItem = new IFCTreeItem();
ifcPropertyTreeItem.instance = iPropertyInstance;
CreatePropertyTreeItem(ifcPropertySetTreeItem, ifcPropertyTreeItem, "IFCPROPERTYSINGLEVALUE");
} // for (int iProperty = ...
}
}
}
void SearchDeeper(IFCTreeItem ifcTreeItem, IntPtr iParentInstance)
{
IFCEngine.GetAttribute(iParentInstance, "StyledByItem", IfcEngine.SdaiType.Instance, out IntPtr styledByItem);
if (styledByItem != IntPtr.Zero)
{
GetRGB_styledItem(ifcTreeItem, styledByItem);
if (ifcTreeItem.ifcColor != null)
{
return;
}
}
if (IsInstanceOf(iParentInstance, "IFCBOOLEANCLIPPINGRESULT"))
{
IFCEngine.GetAttribute(iParentInstance, "FirstOperand", IfcEngine.SdaiType.Instance, out IntPtr firstOperand);
if (firstOperand != IntPtr.Zero)
{
SearchDeeper(ifcTreeItem, firstOperand);
}
} // if (IsInstanceOf(iParentInstance, "IFCBOOLEANCLIPPINGRESULT"))
else
{
if (IsInstanceOf(iParentInstance, "IFCMAPPEDITEM"))
{
IFCEngine.GetAttribute(iParentInstance, "MappingSource", IfcEngine.SdaiType.Instance, out IntPtr mappingSource);
IFCEngine.GetAttribute(mappingSource, "MappedRepresentation", IfcEngine.SdaiType.Instance, out IntPtr mappedRepresentation);
if (mappedRepresentation != IntPtr.Zero)
{
IFCEngine.GetAttribute(mappedRepresentation, "RepresentationIdentifier", IfcEngine.SdaiType.Unicode, out IntPtr representationIdentifier);
if (Marshal.PtrToStringUni(representationIdentifier) == "Body")
{
styledByItem = IntPtr.Zero;
IFCEngine.GetAttribute(mappedRepresentation, "Items", IfcEngine.SdaiType.Aggregation, out IntPtr itemsInstance);
var iItemsCount = IFCEngine.GetMemberCount(itemsInstance);
for (int iItem = 0; iItem < iItemsCount.ToInt32(); iItem++)
{
IFCEngine.GetAggregationElement(itemsInstance, iItem, IfcEngine.SdaiType.Instance, out IntPtr iItemInstance);
IFCEngine.GetAttribute(iItemInstance, "StyledByItem", IfcEngine.SdaiType.Instance, out styledByItem);
if (styledByItem != IntPtr.Zero)
{
GetRGB_styledItem(ifcTreeItem, styledByItem);
}
else
{
SearchDeeper(ifcTreeItem, iItemInstance);
} // else if (iItemInstance != 0)
if (ifcTreeItem.ifcColor != null)
{
return;
}
} // for (int iItem = ...
} // if (Marshal.PtrToStringAnsi(representationIdentifier) == "Body")
} // if (mappedRepresentation != IntPtr.Zero)
} // if (IsInstanceOf(iParentInstance, "IFCMAPPEDITEM"))
} // else if (IsInstanceOf(iParentInstance, "IFCBOOLEANCLIPPINGRESULT"))
}
private void AddElementTreeItems(IFCTreeItem ifcParent, IntPtr iParentInstance)
{
IFCEngine.GetAttribute(iParentInstance, "IsDecomposedBy", IfcEngine.SdaiType.Aggregation, out IntPtr decompositionInstance);
if (decompositionInstance == IntPtr.Zero)
{
return;
}
var iDecompositionsCount = IFCEngine.GetMemberCount(decompositionInstance);
for (int iDecomposition = 0; iDecomposition < iDecompositionsCount.ToInt32(); iDecomposition++)
{
IFCEngine.GetAggregationElement(decompositionInstance, iDecomposition, IfcEngine.SdaiType.Instance, out IntPtr iDecompositionInstance);
if (!IsInstanceOf(iDecompositionInstance, "IFCRELAGGREGATES"))
{
continue;
}
IFCEngine.GetAttribute(iDecompositionInstance, "RelatedObjects", IfcEngine.SdaiType.Aggregation, out IntPtr objectInstances);
var iObjectsCount = IFCEngine.GetMemberCount(objectInstances);
for (int iObject = 0; iObject < iObjectsCount.ToInt32(); iObject++)
{
IFCEngine.GetAggregationElement(objectInstances, iObject, IfcEngine.SdaiType.Instance, out IntPtr iObjectInstance);
IFCTreeItem ifcTreeItem = new IFCTreeItem();
ifcTreeItem.instance = iObjectInstance;
ifcTreeItem.ifcItem = FindIFCItem(IfcRoot, ifcTreeItem);
CreateTreeItem(ifcParent, ifcTreeItem);
checkedElementsDictionary[GetItemType(iObjectInstance)] = true;
if (ifcTreeItem.ifcItem != null)
{
ifcTreeItem.ifcItem.ifcTreeItem = ifcTreeItem;
}
} // for (int iObject = ...
} // for (int iDecomposition = ...
// check for elements
IFCEngine.GetAttribute(iParentInstance, "ContainsElements", IfcEngine.SdaiType.Aggregation, out IntPtr elementsInstance);
if (elementsInstance == IntPtr.Zero)
{
return;
}
var iElementsCount = IFCEngine.GetMemberCount(elementsInstance);
for (int iElement = 0; iElement < iElementsCount.ToInt32(); iElement++)
{
IFCEngine.GetAggregationElement(elementsInstance, iElement, IfcEngine.SdaiType.Instance, out IntPtr iElementInstance);
if (!IsInstanceOf(iElementInstance, "IFCRELCONTAINEDINSPATIALSTRUCTURE"))
{
continue;
}
IFCEngine.GetAttribute(iElementInstance, "RelatedElements", IfcEngine.SdaiType.Aggregation, out IntPtr objectInstances);
var iObjectsCount = IFCEngine.GetMemberCount(objectInstances);
for (int iObject = 0; iObject < iObjectsCount.ToInt32(); iObject++)
{
var iObjectInstance = IntPtr.Zero;
IFCEngine.GetAggregationElement(objectInstances, iObject, IfcEngine.SdaiType.Instance, out iObjectInstance);
IFCTreeItem ifcTreeItem = new IFCTreeItem();
ifcTreeItem.instance = iObjectInstance;
ifcTreeItem.ifcItem = FindIFCItem(IfcRoot, ifcTreeItem);
CreateTreeItem(ifcParent, ifcTreeItem);
checkedElementsDictionary[GetItemType(iObjectInstance)] = true;
if (ifcTreeItem.ifcItem != null)
{
ifcTreeItem.ifcItem.ifcTreeItem = ifcTreeItem;
GetColor(ifcTreeItem);
}
IFCEngine.GetAttribute(iObjectInstance, "IsDefinedBy", IfcEngine.SdaiType.Aggregation, out IntPtr definedByInstances);
if (definedByInstances == IntPtr.Zero)
{
continue;
}
var iDefinedByCount = IFCEngine.GetMemberCount(definedByInstances);
for (int iDefinedBy = 0; iDefinedBy < iDefinedByCount.ToInt32(); iDefinedBy++)
{
IFCEngine.GetAggregationElement(definedByInstances, iDefinedBy, IfcEngine.SdaiType.Instance, out IntPtr iDefinedByInstance);
if (IsInstanceOf(iDefinedByInstance, "IFCRELDEFINESBYPROPERTIES"))
{
AddPropertyTreeItems(ifcTreeItem, iDefinedByInstance);
}
else
{
if (IsInstanceOf(iDefinedByInstance, "IFCRELDEFINESBYTYPE"))
{
// NA
}
}
}
} // for (int iObject = ...
} // for (int iDecomposition = ...
}
private void AddChildrenTreeItems(IFCTreeItem ifcParent, IntPtr iParentInstance, string strEntityName)
{
// check for decomposition
IFCEngine.GetAttribute(iParentInstance, "IsDecomposedBy", IfcEngine.SdaiType.Aggregation, out IntPtr decompositionInstance);
if (decompositionInstance == IntPtr.Zero)
{
return;
}
var iDecompositionsCount = IFCEngine.GetMemberCount(decompositionInstance);
for (int iDecomposition = 0; iDecomposition < iDecompositionsCount.ToInt32(); iDecomposition++)
{
IFCEngine.GetAggregationElement(decompositionInstance, iDecomposition, IfcEngine.SdaiType.Instance, out IntPtr iDecompositionInstance);
if (!IsInstanceOf(iDecompositionInstance, "IFCRELAGGREGATES"))
{
continue;
}
IFCEngine.GetAttribute(iDecompositionInstance, "RelatedObjects", IfcEngine.SdaiType.Aggregation, out IntPtr 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 = ...
}