internal override int ReadParameters(List <string> parameters, IgesReaderBinder binder)
{
var index = 0;
var stack = new Stack <object>();
var parameterCount = Integer(parameters, index++);
for (int i = 0; i < parameterCount; i++)
{
var value = Integer(parameters, index++);
if (value < 0)
{
// negative index
stack.Push(-value);
}
else if (value > 0)
{
// operation
var node = new IgesBooleanTreeOperation((IgesBooleanTreeOperationKind)value);
var rightItem = stack.Pop();
var leftItem = stack.Pop();
if (rightItem is int)
{
binder.BindEntity((int)rightItem, e => node.RightChild = new IgesBooleanTreeEntity(e));
}
else if (rightItem is IIgesBooleanTreeItem)
{
node.RightChild = (IIgesBooleanTreeItem)rightItem;
}
else
{
throw new InvalidOperationException("Unexpected item on stack: " + rightItem.GetType().Name);
}
if (leftItem is int)
{
binder.BindEntity((int)leftItem, e => node.LeftChild = new IgesBooleanTreeEntity(e));
}
else if (leftItem is IIgesBooleanTreeItem)
{
node.LeftChild = (IIgesBooleanTreeItem)leftItem;
}
else
{
throw new InvalidOperationException("Unexpected item on stack: " + leftItem.GetType().Name);
}
stack.Push(node);
}
}
RootNode = stack.Count == 0
? null
: (IIgesBooleanTreeItem)stack.Pop();
return(index);
}
private int GetItemCount(IIgesBooleanTreeItem node)
{
if (node.IsEntity)
{
return(1);
}
else
{
var operation = (IgesBooleanTreeOperation)node;
return(GetItemCount(operation.LeftChild)
+ GetItemCount(operation.RightChild)
+ 1);
}
}
private IEnumerable <IgesEntity> GetReferencedEntities(IIgesBooleanTreeItem node)
{
if (node.IsEntity)
{
yield return(((IgesBooleanTreeEntity)node).Entity);
}
else
{
var operation = (IgesBooleanTreeOperation)node;
foreach (var entity in GetReferencedEntities(operation.LeftChild))
{
yield return(entity);
}
foreach (var entity in GetReferencedEntities(operation.RightChild))
{
yield return(entity);
}
}
}
public IgesBooleanTree(IIgesBooleanTreeItem rootNode)
{
EntityUseFlag = IgesEntityUseFlag.Geometry;
RootNode = rootNode;
}
private void WriteParameters(List <object> parameters, IgesWriterBinder binder, IIgesBooleanTreeItem node)
{
if (node.IsEntity)
{
parameters.Add(-binder.GetEntityId(((IgesBooleanTreeEntity)node).Entity));
}
else
{
var operation = (IgesBooleanTreeOperation)node;
WriteParameters(parameters, binder, operation.LeftChild);
WriteParameters(parameters, binder, operation.RightChild);
parameters.Add((int)operation.OperationKind);
}
}
public IgesBooleanTree(IIgesBooleanTreeItem rootNode, IgesFile file) : base(file)
{
EntityUseFlag = IgesEntityUseFlag.Geometry;
RootNode = rootNode;
}
public IgesBooleanTreeOperation(IgesBooleanTreeOperationKind operationKind, IIgesBooleanTreeItem leftChild, IIgesBooleanTreeItem rightChild)
{
OperationKind = operationKind;
LeftChild = leftChild;
RightChild = rightChild;
}
