public static uint AssignHandles(DxfFile file)
{
var visitedItems = new HashSet <IDxfItemInternal>();
foreach (var item in file.GetFileItems())
{
ClearPointers(item, visitedItems);
}
visitedItems.Clear();
uint nextPointer = 1u;
foreach (var item in file.GetFileItems().Where(i => i != null))
{
nextPointer = AssignHandles(item, nextPointer, 0u, visitedItems);
foreach (var child in item.GetChildItems().Where(c => c != null))
{
var parentHandle = GetParentHandle(item, child);
nextPointer = AssignHandles(child, nextPointer, parentHandle, visitedItems);
SetOwner(child, item, isWriting: true);
}
}
return(nextPointer);
}
public static void BindPointers(DxfFile file)
{
// gather all items by handle
var handleMap = new Dictionary <uint, IDxfItemInternal>();
var visitedItems = new HashSet <IDxfItemInternal>();
foreach (var item in file.GetFileItems())
{
GatherPointers(item, handleMap, visitedItems);
}
visitedItems.Clear();
var visitedChildren = new HashSet <IDxfItemInternal>();
// bind all pointers
foreach (var item in file.GetFileItems())
{
BindPointers(item, handleMap, visitedItems, visitedChildren);
}
}
