/// <summary>
/// QuadNode constructor
/// </summary>
/// <param name="nodeType">Type of node.</param>
/// <param name="nodeSize">Width/Height of node (# of vertices across - 1).</param>
/// <param name="nodeDepth">Depth of current node</param>
/// <param name="parent">Parent QuadNode</param>
/// <param name="parentTree">Top level Tree.</param>
/// <param name="positionIndex">Index of top left Vertice in the parent tree Vertices array</param>
public QuadNode(NodeType nodeType, int nodeSize, int nodeDepth, QuadNode parent, QuadTree parentTree, int positionIndex)
{
NodeType = nodeType;
_nodeSize = nodeSize;
_nodeDepth = nodeDepth;
_positionIndex = positionIndex;
_parent = parent;
_parentTree = parentTree;
//Add the 9 vertices
AddVertices();
Bounds = new BoundingBox(_parentTree.Vertices[VertexTopLeft.Index].Position,
_parentTree.Vertices[VertexBottomRight.Index].Position);
Bounds.Min.Y = -950f;
Bounds.Max.Y = 950f;
if (nodeSize >= 4)
{
AddChildren();
}
//Make call to UpdateNeighbors from the parent node.
//This will update all neighbors recursively for the
//children as well. This ensures all nodes are created
//prior to updating neighbors.
if (_nodeDepth == 1)
{
AddNeighbors();
VertexTopLeft.Activated = true;
VertexTopRight.Activated = true;
VertexCenter.Activated = true;
VertexBottomLeft.Activated = true;
VertexBottomRight.Activated = true;
}
}