private void WriteNode(StringBuilder xml, HashSet <CsgNode> added, CsgNode node, string indent)
{
if (!added.Add(node))
{
xml.Append(indent);
xml.Append("<Link Id=\"");
xml.Append(node.Id);
xml.AppendLine("\" />");
return;
}
if (node is CsgCube)
{
WriteNode(xml, added, (CsgCube)node, indent); return;
}
if (node is CsgTranslate)
{
WriteNode(xml, added, (CsgTranslate)node, indent); return;
}
if (node is CsgRotate)
{
WriteNode(xml, added, (CsgRotate)node, indent); return;
}
if (node is CsgScale)
{
WriteNode(xml, added, (CsgScale)node, indent); return;
}
if (node is CsgGroup)
{
WriteNode(xml, added, (CsgGroup)node, indent); return;
}
}
public bool MoveChild(CsgNode child, int toIndex)
{
if (children.Remove(child))
{
children.Insert(toIndex, child);
return(true);
}
return(false);
}
public bool RemoveChild(CsgNode node)
{
if (node != null && children.Remove(node))
{
node.referencedBy.Remove(this);
return(true);
}
return(false);
}
private void ReadElement(XElement root, CsgGroup owner)
{
foreach (XElement e in root.Elements())
{
CsgNode node = null;
string id = e.Attribute("Id").GetValue();
switch (e.Name.LocalName)
{
case "Link":
if (!nodeIds.TryGetValue(id, out node))
{
deferredLinks.Add(new Tuple <string, CsgGroup>(id, owner));
}
break;
case "CsgCube": node = ReadCube(e); break;
case "CsgScale": node = ReadScale(e); break;
case "CsgTranslate": node = ReadTranslate(e); break;
case "CsgRotate": node = ReadRotate(e); break;
default:
Type type = Type.GetType("ConstructorEngine." + e.Name.LocalName);
if (type != null)
{
node = Activator.CreateInstance(type) as CsgNode;
}
break;
}
if (node != null)
{
node.Name = e.Attribute("Name").GetValue(node.Name);
if (!string.IsNullOrEmpty(id))
{
nodeIds[id] = node;
}
if (owner != null)
{
owner.AddChild(node);
}
else
{
node.IsObjectRoot = true;
}
Repository.RegisterNode(node);
if (node is CsgGroup)
{
ReadElement(e, (CsgGroup)node);
}
}
}
}
public void SetRootNode(CsgNode node)
{
float minX = 0, minY = 0, minZ = 0;
float maxX = 0, maxY = 0, maxZ = 0;
bool first = true;
World.Clear();
node.PopulateWorld(World);
World.Gravity = new JVector(0, -1, 0);
foreach (RigidBody body in World.RigidBodies)
{
JBBox box = body.BoundingBox;
if (first)
{
first = false;
minX = box.Min.X; minY = box.Min.Y; minZ = box.Min.Z;
maxX = box.Max.X; maxY = box.Max.Y; maxZ = box.Max.Z;
}
else
{
if (minX > box.Min.X)
{
minX = box.Min.X;
}
if (maxX < box.Max.X)
{
maxX = box.Max.X;
}
if (minY > box.Min.Y)
{
minY = box.Min.Y;
}
if (maxY < box.Max.Y)
{
maxY = box.Max.Y;
}
if (minZ > box.Min.Z)
{
minZ = box.Min.Z;
}
if (maxZ < box.Max.Z)
{
maxZ = box.Max.Z;
}
}
}
RigidBody floor = new RigidBody(new BoxShape(new JVector((maxX - minX) * 3 + 1000000, 100, (maxZ - minZ) * 3 + 1000000)));
floor.Position = new JVector((minX + maxX) * 0.5f, minY - 51, (minZ + maxZ) * 0.5f);
floor.IsStatic = true;
World.AddBody(floor);
}
public void RegisterNode(CsgNode node)
{
if (Nodes.ContainsKey(node.Id))
{
return;
}
Nodes[node.Id] = node;
foreach (CsgNode child in node.Children)
{
RegisterNode(child);
}
}
public bool AddChild(CsgNode node)
{
if (node == null || children.Contains(node))
{
return(false);
}
if (IsCyclic(node))
{
return(false);
}
children.Add(node);
node.referencedBy.Add(this);
return(true);
}
public bool IsCyclic(CsgNode addedNode, HashSet <CsgNode> visited = null)
{
if (visited == null)
{
visited = new HashSet <CsgNode>();
}
if (addedNode != null && !visited.Add(addedNode))
{
return(true);
}
if (!visited.Add(this))
{
return(true);
}
foreach (CsgNode parent in ReferencedBy)
{
if (parent.IsCyclic(null, visited))
{
return(true);
}
}
return(false);
}
