private void AddEdge(int i, Vector3d v)
{
v.Unitize();
NodeInterface ni = new NodeInterface(v, i);
Edges.Add(ni);
}
/// <summary>
/// Build node data, including edge connectivity, edge vectors, etc.
/// </summary>
/// <param name="CalcFrames">Calculate node frames based on the average normal of edge vectors.</param>
/// <param name="ProjectVectors">Project edge vectors onto the node frame (flatten).</param>
public void BuildNodeData(bool CalcFrames = false, bool ProjectVectors = false)
{
for (int i = 0; i < Nodes.Count; ++i)
{
Nodes[i].Edges.Clear();
}
for (int e = 0; e < Edges.Count; ++e)
{
int ei = Edges[e].Ends.I;
int ej = Edges[e].Ends.J;
Vector3d v = new Vector3d(Nodes[ei].Frame.Origin - Nodes[ej].Frame.Origin);
v.Unitize();
NodeInterface niI = new NodeInterface(-v, e);
Nodes[ei].Edges.Add(niI);
NodeInterface niJ = new NodeInterface(v, e);
Nodes[ej].Edges.Add(niJ);
}
// Calculate foot / end nodes
for (int i = 0; i < Nodes.Count; ++i)
{
if (Nodes[i].Edges.Count == 1)
{
FootNode fn = new FootNode();
fn.Frame = Nodes[i].Frame;
fn.Edges = Nodes[i].Edges;
fn.Chains = Nodes[i].Chains;
Nodes[i] = fn;
}
}
if (CalcFrames)
{
foreach (Node n in Nodes)
{
n.CalculateAverageFrame();
}
}
if (ProjectVectors)
{
foreach (Node n in Nodes)
{
if (n is FootNode)
{
continue;
}
n.ProjectEdgeVectors();
}
}
if (EnforceContinuityInPairs)
{
foreach (Node n in Nodes)
{
if (n.Edges.Count == 2)
{
Vector3d av = n.Edges[0].Vector - n.Edges[1].Vector;
av.Unitize();
n.Edges[0].Vector = av;
n.Edges[1].Vector = -av;
}
}
}
}
public static Node Read(XElement elem)
{
Node n;
if (elem.Name != "node")
{
throw new Exception("XElement is not a valid Node!");
}
XAttribute attr;
Guid id;
attr = elem.Attribute("id");
if (attr != null)
{
id = Guid.Parse(attr.Value);
}
attr = elem.Attribute("type");
if (attr == null)
{
throw new Exception("XElement does not contain a node type!");
}
string type = attr.Value;
if (type == "FootNode")
{
n = new FootNode();
}
else if (type == "BranchingNode")
{
n = new BranchingNode();
}
else
{
n = new Node();
}
XElement nedges = elem.Element("node_edges");
XElement[] edges = nedges.Elements("node_edge").ToArray();
for (int i = 0; i < edges.Length; ++i)
{
attr = edges[i].Attribute("index");
if (attr == null)
{
throw new Exception("NodeInterface needs an index!");
}
int index = Convert.ToInt32(attr.Value);
double vx, vy, vz;
attr = edges[i].Attribute("vX");
if (attr == null)
{
throw new Exception("NodeInterface is missing part of its vector!");
}
vx = Convert.ToDouble(attr.Value);
attr = edges[i].Attribute("vY");
if (attr == null)
{
throw new Exception("NodeInterface is missing part of its vector!");
}
vy = Convert.ToDouble(attr.Value);
attr = edges[i].Attribute("vZ");
if (attr == null)
{
throw new Exception("NodeInterface is missing part of its vector!");
}
vz = Convert.ToDouble(attr.Value);
int w;
attr = edges[i].Attribute("weight");
if (attr == null)
{
throw new Exception("NodeInterface is missing part of its vector!");
}
w = Convert.ToInt32(attr.Value);
int ud = 0;
attr = edges[i].Attribute("user_data");
if (attr != null)
{
ud = Convert.ToInt32(attr.Value);
}
NodeInterface ni = new NodeInterface(new Vector3d(vx, vy, vz), index);
ni.Weight = w;
ni.UserData = ud;
n.Edges.Add(ni);
}
if (n is BranchingNode)
{
BranchingNode bn = n as BranchingNode;
XElement bweights = elem.Element("branch_weights");
if (bweights != null)
{
XElement[] bw_list = bweights.Elements("branch_weight").ToArray();
for (int i = 0; i < bw_list.Length; ++i)
{
bn.BranchWeights.Add(Convert.ToInt32(bw_list[i].Value));
}
}
n = bn;
}
return(n);
}