/usr/include/libwildmagic/Wm5ExtractCurveSquares.h is in libwildmagic-dev 5.13-1ubuntu1.
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// 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: 5.0.1 (2010/10/01)
#ifndef WM5EXTRACTCURVESQUARES_H
#define WM5EXTRACTCURVESQUARES_H
#include "Wm5ImagicsLIB.h"
#include "Wm5Vector2.h"
#include "Wm5EdgeKey.h"
namespace Wm5
{
class WM5_IMAGICS_ITEM ExtractCurveSquares
{
public:
// The input is a 2D image with lexicographically ordered pixels (x,y)
// stored in a linear array. Pixel (x,y) is stored in the array at
// location x+xbound*y. The caller is responsible for deleting data if
// it was dynamically allocated.
ExtractCurveSquares (int xBound, int yBound, int* data);
// Extract a level curve of the specified level value.
void ExtractContour (int level, std::vector<Vector2f>& vertices,
std::vector<EdgeKey>& edges);
// The extraction has duplicate vertices on edges shared by pixels. This
// function will eliminate the duplication.
void MakeUnique (std::vector<Vector2f>& vertices,
std::vector<EdgeKey>& edges);
protected:
// Since the level value is an integer, the vertices of the extracted
// level curve are stored internally as rational numbers.
class Vertex
{
public:
Vertex (int xNumer = 0, int xDenom = 0, int yNumer = 0,
int yDenom = 0);
int XNumer, XDenom, YNumer, YDenom;
};
void AddVertex (std::vector<Vertex>& vertices, int xNumer, int xDenom,
int yNumer, int yDenom);
void AddEdge (std::vector<Vertex>& vertices, std::vector<EdgeKey>& edges,
int xNumer0, int xDenom0, int yNumer0, int yDenom0, int xNumer1,
int xDenom1, int yNumer1, int yDenom1);
void ProcessSquare (std::vector<Vertex>& vertices,
std::vector<EdgeKey>& edges, int x, int xp, int y, int yp, int f00,
int f10, int f11, int f01);
int mXBound, mYBound, mQuantity;
int* mData;
};
}
#endif
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