fahhh

App/util/SpanningNode.h

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+/* Copyright 2003-2006 ROBLOX Corporation, All Rights Reserved */
+
+#pragma once
+
+#include "Util/IndexedMesh.h"
+
+namespace RBX {
+
+	class SpanningEdge;
+
+	class SpanningNode : public IndexedMesh
+	{
+		friend class SpanningEdge;
+
+	private:
+		SpanningEdge*	edgeToParent;
+
+	protected:
+		virtual SpanningEdge* getFirstSpanningEdge() = 0;
+		virtual SpanningEdge* getNextSpanningEdge(SpanningEdge* edge) = 0;
+
+		void setEdgeToParent(SpanningEdge* edge);
+
+	public:
+		SpanningNode() : edgeToParent(NULL) {}
+
+		~SpanningNode() {}
+
+		SpanningNode* getParent()					{return getTypedParent<SpanningNode>();}
+		const SpanningNode* getConstParent() const	{return getConstTypedParent<SpanningNode>();}
+
+		SpanningNode* getChild(int i) {return getTypedChild<SpanningNode>(i);}
+		
+		SpanningEdge* getEdgeToParent()							{return edgeToParent;}
+		const SpanningEdge* getConstEdgeToParent() const		{return edgeToParent;}
+
+		static int getDepth(SpanningNode* node) {
+			if (!node) {
+				return 0;
+			}
+			else if (!node->getParent()) {
+				return 1;
+			}
+			else {
+				return getDepth(node->getParent()) + 1;
+			}
+		}
+
+		bool lessThan(const IndexedTree* other) const;
+
+		template<class Func>
+		inline void visitEdges(Func func)
+		{
+			SpanningEdge* edge = getFirstSpanningEdge();
+			while (edge) {
+				func(this, edge);
+				edge = getNextSpanningEdge(edge);
+			}
+		}
+	};
+
+} // namespace