public void RemoveChild(TransformNode child)
{
if (_children == null)
{
_children.Remove(child);
}
}
public void AddChild(TransformNode child)
{
if (_children == null)
{
_children = new HashSet <TransformNode>();
}
_children.Add(child);
}
public void AddChild(TransformNode child)
{
if (_children == null) _children = new HashSet<TransformNode>();
_children.Add(child);
}
public void RemoveChild(TransformNode child)
{
if (_children == null)
{
_children.Remove(child);
}
}
public TransformGraph(XbimModel model)
{
_model = model;
_root = new TransformNode();
}
private TransformNode AddNode(IfcObjectPlacement placement, IfcProduct product)
{
var lp = placement as IfcLocalPlacement;
var gp = placement as IfcGridPlacement;
if (gp != null)
{
throw new NotImplementedException("GridPlacement is not implemented");
}
if (lp == null)
{
return(null);
}
TransformNode node;
if (!_placementNodes.TryGetValue(placement, out node))
{
node = new TransformNode(product);
if (product != null)
{
_productNodes.Add(product.EntityLabel, node);
}
var ax3 = lp.RelativePlacement as IfcAxis2Placement3D;
if (ax3 != null)
{
node.LocalMatrix = ax3.ToMatrix3D();
}
else
{
var ax2 = lp.RelativePlacement as IfcAxis2Placement2D;
if (ax2 != null)
{
node.LocalMatrix = ax2.ToMatrix3D();
}
}
_placementNodes.Add(placement, node);
if (lp.PlacementRelTo != null)
{
TransformNode parent;
if (_placementNodes.TryGetValue(lp.PlacementRelTo, out parent))
//we have already processed parent
{
parent.AddChild(node);
node.Parent = parent;
}
else //make sure placement tree is created
{
parent = AddNode(lp.PlacementRelTo, null);
parent.AddChild(node);
node.Parent = parent;
}
}
else //it is in world coordinate system just add it
{
_root.AddChild(node);
node.Parent = _root;
}
return(node);
}
if (product == null || node.ProductLabel != null)
{
return(null);
}
node.ProductLabel = product.EntityLabel;
_productNodes.Add(product.EntityLabel, node);
return(node);
}
