/// <summary>
/// 向上修正节点(向树根方向修正节点)
/// </summary>
/// <returns>The to root.</returns>
/// <param name="node">Node.</param>
private BinaryHeapNode ModifyToRoot(BinaryHeapNode node)
{
SimpleAStarNode currentNodeData = node.data;
int currentNodeValue = currentNodeData.f;
BinaryHeapNode parentNode = node.parentNode;
while (parentNode != null)
{
if (currentNodeValue < parentNode.data.f)
{
node.data = parentNode.data;
node.data.mBinaryHeapNode = node;
node = node.parentNode;
parentNode = node.parentNode;
}
else
{
break;
}
}
node.data = currentNodeData;
node.data.mBinaryHeapNode = node;
return(node);
}
/// <summary>
/// 取出最小值
/// </summary>
/// <returns>The node.</returns>
public SimpleAStarNode PopNode()
{
SimpleAStarNode minValue = this.headNode.data;
BinaryHeapNode lastNode = this.nodes[--this.nodeLength];
if (lastNode != this.headNode)
{
BinaryHeapNode parentNode = lastNode.parentNode;
if (parentNode.leftNode == lastNode)
{
parentNode.leftNode = null;
}
else
{
parentNode.rightNode = null;
}
this.headNode.data = lastNode.data;
this.headNode.data.mBinaryHeapNode = this.headNode;
this.ModifyToLeaf(this.headNode);
}
else
{
this.headNode = null;
}
this.CacheNode(this.nodes[this.nodeLength]);
this.nodes[this.nodeLength] = null;
return(minValue);
}
/// <summary>
/// 存储节点
/// </summary>
/// <param name="node">Node.</param>
private void CacheNode(BinaryHeapNode node)
{
node.parentNode = node.leftNode = node.rightNode = null;
node.data = null;
this.cacheNodes.Add(node);
}
/// <summary>
/// 添加新节点
/// </summary>
/// <returns>The node.</returns>
/// <param name="data">Data.</param>
public BinaryHeapNode InsertNode(SimpleAStarNode data)
{
if (this.headNode != null)
{
BinaryHeapNode parentNode = this.nodes[this.nodeLength >> 1];
BinaryHeapNode node = this.GetNode(data, parentNode);
node.data.mBinaryHeapNode = node;
if (parentNode.leftNode == null)
{
parentNode.leftNode = node;
}
else
{
parentNode.rightNode = node;
}
this.nodes[this.nodeLength] = node;
this.nodeLength++;
return(this.ModifyToRoot(node));
}
else
{
this.nodes[1] = this.headNode = this.GetNode(data, null);
//this.nodes.Add(this.headNode);
this.headNode.data.mBinaryHeapNode = this.headNode;
this.nodeLength = 2;
return(this.headNode);
}
}
/// <summary>
/// 重置
/// </summary>
public void Reset()
{
for (int index = 1; index < this.nodeLength; index++)
{
this.CacheNode(this.nodes[index]);
this.nodes[index] = null;
}
this.nodeLength = 1;
this.headNode = null;
}
/// <summary>
/// 修正节点
/// </summary>
/// <returns>The node.</returns>
/// <param name="node">Node.</param>
public BinaryHeapNode ModifyNode(BinaryHeapNode node)
{
if (node.parentNode != null && node.parentNode.data.f > node.data.f)
{
return(this.ModifyToRoot(node));
}
else
{
return(this.ModifyToLeaf(node));
}
}
/// <summary>
/// 获得一个节点
/// </summary>
/// <returns>The node.</returns>
/// <param name="data">Data.</param>
/// <param name="parentNode">Parent node.</param>
private BinaryHeapNode GetNode(SimpleAStarNode data, BinaryHeapNode parentNode)
{
BinaryHeapNode binaryHeapNode = null;
if (this.cacheNodes.Count > 0)
{
binaryHeapNode = this.cacheNodes[this.cacheNodes.Count - 1];
binaryHeapNode.data = data;
binaryHeapNode.parentNode = parentNode;
this.cacheNodes.RemoveAt(this.cacheNodes.Count - 1);
}
else
{
binaryHeapNode = new BinaryHeapNode(data, parentNode);
}
return(binaryHeapNode);
}
/// <summary>
/// 获得一个节点
/// </summary>
/// <returns>The node.</returns>
/// <param name="data">Data.</param>
/// <param name="parentNode">Parent node.</param>
private BinaryHeapNode GetNode(SimpleAStarNode data, BinaryHeapNode parentNode)
{
BinaryHeapNode binaryHeapNode = null;
if (this.cacheNodes.Count > 0)
{
binaryHeapNode = this.cacheNodes[this.cacheNodes.Count - 1];
binaryHeapNode.data = data;
binaryHeapNode.parentNode = parentNode;
this.cacheNodes.RemoveAt(this.cacheNodes.Count - 1);
}
else
{
binaryHeapNode = new BinaryHeapNode(data, parentNode);
}
return binaryHeapNode;
}
/// <summary>
/// 向下修正节点(向树叶方向修正节点)
/// </summary>
/// <returns>The to leaf.</returns>
/// <param name="node">Node.</param>
private BinaryHeapNode ModifyToLeaf(BinaryHeapNode node)
{
SimpleAStarNode currentNodeData = node.data;
int currentNodeValue = currentNodeData.f;
BinaryHeapNode leftNode = null;
BinaryHeapNode rightNode = null;
while (true)
{
leftNode = node.leftNode;
rightNode = node.rightNode;
if (rightNode != null && leftNode != null && rightNode.data.f < leftNode.data.f)
{
if (currentNodeValue > rightNode.data.f)
{
node.data = rightNode.data;
node.data.mBinaryHeapNode = node;
node = rightNode;
}
else
{
break;
}
}
else if (leftNode != null && leftNode.data.f < currentNodeValue)
{
node.data = leftNode.data;
node.data.mBinaryHeapNode = node;
node = leftNode;
}
else
{
break;
}
}
node.data = currentNodeData;
node.data.mBinaryHeapNode = node;
return(node);
}
public BinaryHeapNode(SimpleAStarNode data, BinaryHeapNode parentNode)
{
this.data = data;
this.parentNode = parentNode;
}
/// <summary>
/// 重置
/// </summary>
public void Reset()
{
for (int index = 1; index < this.nodeLength; index++)
{
this.CacheNode(this.nodes[index]);
this.nodes[index] = null;
}
this.nodeLength = 1;
this.headNode = null;
}
/// <summary>
/// 取出最小值
/// </summary>
/// <returns>The node.</returns>
public SimpleAStarNode PopNode()
{
SimpleAStarNode minValue = this.headNode.data;
BinaryHeapNode lastNode = this.nodes[--this.nodeLength];
if (lastNode != this.headNode)
{
BinaryHeapNode parentNode = lastNode.parentNode;
if (parentNode.leftNode == lastNode)
{
parentNode.leftNode = null;
}
else
{
parentNode.rightNode = null;
}
this.headNode.data = lastNode.data;
this.headNode.data.mBinaryHeapNode = this.headNode;
this.ModifyToLeaf(this.headNode);
}
else
{
this.headNode = null;
}
this.CacheNode(this.nodes[this.nodeLength]);
this.nodes[this.nodeLength] = null;
return minValue;
}
/// <summary>
/// 添加新节点
/// </summary>
/// <returns>The node.</returns>
/// <param name="data">Data.</param>
public BinaryHeapNode InsertNode(SimpleAStarNode data)
{
if (this.headNode != null)
{
BinaryHeapNode parentNode = this.nodes[this.nodeLength >> 1];
BinaryHeapNode node = this.GetNode(data, parentNode);
node.data.mBinaryHeapNode = node;
if (parentNode.leftNode == null)
{
parentNode.leftNode = node;
}
else
{
parentNode.rightNode = node;
}
this.nodes[this.nodeLength] = node;
this.nodeLength++;
return this.ModifyToRoot(node);
}
else
{
this.nodes[1] = this.headNode = this.GetNode(data, null);
//this.nodes.Add(this.headNode);
this.headNode.data.mBinaryHeapNode = this.headNode;
this.nodeLength = 2;
return this.headNode;
}
}
/// <summary>
/// 修正节点
/// </summary>
/// <returns>The node.</returns>
/// <param name="node">Node.</param>
public BinaryHeapNode ModifyNode(BinaryHeapNode node)
{
if (node.parentNode != null && node.parentNode.data.f > node.data.f)
{
return this.ModifyToRoot(node);
}
else
{
return this.ModifyToLeaf(node);
}
}
/// <summary>
/// 向上修正节点(向树根方向修正节点)
/// </summary>
/// <returns>The to root.</returns>
/// <param name="node">Node.</param>
private BinaryHeapNode ModifyToRoot(BinaryHeapNode node)
{
SimpleAStarNode currentNodeData = node.data;
int currentNodeValue = currentNodeData.f;
BinaryHeapNode parentNode = node.parentNode;
while (parentNode != null)
{
if (currentNodeValue < parentNode.data.f)
{
node.data = parentNode.data;
node.data.mBinaryHeapNode = node;
node = node.parentNode;
parentNode = node.parentNode;
}
else
{
break;
}
}
node.data = currentNodeData;
node.data.mBinaryHeapNode = node;
return node;
}
public BinaryHeapNode(SimpleAStarNode data, BinaryHeapNode parentNode)
{
this.data = data;
this.parentNode = parentNode;
}
/// <summary>
/// 存储节点
/// </summary>
/// <param name="node">Node.</param>
private void CacheNode(BinaryHeapNode node)
{
node.parentNode = node.leftNode = node.rightNode = null;
node.data = null;
this.cacheNodes.Add(node);
}
/// <summary>
/// 向下修正节点(向树叶方向修正节点)
/// </summary>
/// <returns>The to leaf.</returns>
/// <param name="node">Node.</param>
private BinaryHeapNode ModifyToLeaf(BinaryHeapNode node)
{
SimpleAStarNode currentNodeData = node.data;
int currentNodeValue = currentNodeData.f;
BinaryHeapNode leftNode = null;
BinaryHeapNode rightNode = null;
while (true)
{
leftNode = node.leftNode;
rightNode = node.rightNode;
if (rightNode != null && leftNode != null && rightNode.data.f < leftNode.data.f)
{
if (currentNodeValue > rightNode.data.f)
{
node.data = rightNode.data;
node.data.mBinaryHeapNode = node;
node = rightNode;
}
else
{
break;
}
}
else if (leftNode != null && leftNode.data.f < currentNodeValue)
{
node.data = leftNode.data;
node.data.mBinaryHeapNode = node;
node = leftNode;
}
else
{
break;
}
}
node.data = currentNodeData;
node.data.mBinaryHeapNode = node;
return node;
}