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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.5.1 (2014/01/21)
#ifndef CLIMB2D_H
#define CLIMB2D_H
#include "AreaMergeTree.h"
#include "Wm5Vector2.h"
using namespace Wm5;
class Climb2D
{
public:
// Construction and destruction. The array is assumed to contain 2^N+1 by
// 2^N+1 elements where N >= 0. The organization is row-major order. The
// class assumes responsibility for the input array and will delete it.
Climb2D (int N, int* data);
~Climb2D ();
typedef std::pair<int,int> Edge2;
void ExtractContour (float level, int depth, int& numVertices,
Vector2f*& vertices, int& numEdges, Edge2*& edges);
void MakeUnique (int& numVertices, Vector2f*& vertices,
int& numEdges, Edge2*& edges);
private:
// image data
int mTwoPowerN, mSize;
int* mData;
// linear merging
LinearMergeTree** mXMerge;
LinearMergeTree** mYMerge;
// area merging
AreaMergeTree* mXYMerge;
// Support for extraction of level sets.
float GetInterp (float level, int base, int index, int increment);
void AddVertex (std::vector<Vector2f>& vertices, float x, float y);
void AddEdge (std::vector<Vector2f>& vertices,
std::vector<Edge2>& edges, float x0, float y0, float x1, float y1);
void SetLevel (float level, int depth);
void GetRectangles (std::vector<Rectangle2>& rectangles);
void GetComponents (float level, const Rectangle2& rectangle,
std::vector<Vector2f>& vertices, std::vector<Edge2>& edges);
// debugging
void PrintRectangles (const char* filename,
std::vector<Rectangle2>& rectangles);
};
#endif
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