/usr/include/libwildmagic/Wm5ConvexHull2.h is in libwildmagic-dev 5.13-1+b2.
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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 WM5CONVEXHULL2_H
#define WM5CONVEXHULL2_H
#include "Wm5MathematicsLIB.h"
#include "Wm5ConvexHull1.h"
#include "Wm5Query2.h"
namespace Wm5
{
template <typename Real>
class WM5_MATHEMATICS_ITEM ConvexHull2 : public ConvexHull<Real>
{
public:
// The input to the constructor is the array of vertices whose convex hull
// is required. If you want ConvexHull2 to delete the vertices during
// destruction, set bOwner to 'true'. Otherwise, you own the vertices and
// must delete them yourself.
//
// You have a choice of speed versus accuracy. The fastest choice is
// Query::QT_INT64, but it gives up a lot of precision, scaling the points
// to [0,2^{20}]^3. The choice Query::QT_INTEGER gives up less precision,
// scaling the points to [0,2^{24}]^3. The choice Query::QT_RATIONAL uses
// exact arithmetic, but is the slowest choice. The choice Query::QT_REAL
// uses floating-point arithmetic, but is not robust in all cases.
ConvexHull2 (int numVertices, Vector2<Real>* vertices, Real epsilon,
bool owner, Query::Type queryType);
virtual ~ConvexHull2 ();
// If GetDimension() returns 1, then the points lie on a line. You must
// create a ConvexHull1 object using the function provided.
const Vector2<Real>& GetLineOrigin () const;
const Vector2<Real>& GetLineDirection () const;
ConvexHull1<Real>* GetConvexHull1 () const;
// Support for streaming to/from disk.
ConvexHull2 (const char* filename, int mode = FileIO::FM_DEFAULT_READ);
bool Load (const char* filename, int mode = FileIO::FM_DEFAULT_READ);
bool Save (const char* filename, int mode = FileIO::FM_DEFAULT_WRITE)
const;
private:
using ConvexHull<Real>::mQueryType;
using ConvexHull<Real>::mNumVertices;
using ConvexHull<Real>::mDimension;
using ConvexHull<Real>::mNumSimplices;
using ConvexHull<Real>::mIndices;
using ConvexHull<Real>::mEpsilon;
using ConvexHull<Real>::mOwner;
class Edge
{
public:
Edge (int v0, int v1);
int GetSign (int i, const Query2<Real>* query);
void Insert (Edge* adj0, Edge* adj1);
void DeleteSelf ();
void DeleteAll ();
void GetIndices (int& numIndices, int*& indices);
int V[2];
Edge* E[2];
int Sign;
int Time;
};
bool Update (Edge*& hull, int i);
// The input points.
Vector2<Real>* mVertices;
// Support for robust queries.
Vector2<Real>* mSVertices;
Query2<Real>* mQuery;
// The line of containment if the dimension is 1.
Vector2<Real> mLineOrigin, mLineDirection;
};
typedef ConvexHull2<float> ConvexHull2f;
typedef ConvexHull2<double> ConvexHull2d;
}
#endif
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