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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: 5.0.1 (2010/10/01)
#include "Wm5MathematicsPCH.h"
#include "Wm5Delaunay1.h"
#include "Wm5Memory.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Real>
Delaunay1<Real>::Delaunay1 (int numVertices, Real* vertices, Real epsilon,
bool owner, Query::Type queryType)
:
Delaunay<Real>(numVertices, epsilon, owner, queryType),
mVertices(vertices)
{
std::vector<SortedVertex> sorted(mNumVertices);
int i;
for (i = 0; i < mNumVertices; ++i)
{
sorted[i].Value = mVertices[i];
sorted[i].Index = i;
}
std::sort(sorted.begin(), sorted.end());
Real range = sorted[mNumVertices - 1].Value - sorted[0].Value;
if (range >= mEpsilon)
{
mDimension = 1;
mNumSimplices = mNumVertices - 1;
mIndices = new1<int>(2*mNumSimplices);
for (i = 0; i < mNumSimplices; ++i)
{
mIndices[2*i] = sorted[i].Index;
mIndices[2*i + 1] = sorted[i + 1].Index;
}
mAdjacencies = new1<int>(2*mNumSimplices);
for (i = 0; i < mNumSimplices; ++i)
{
mAdjacencies[2*i] = i - 1;
mAdjacencies[2*i + 1] = i + 1;
}
mAdjacencies[2*mNumSimplices - 1] = -1;
}
}
//----------------------------------------------------------------------------
template <typename Real>
Delaunay1<Real>::~Delaunay1 ()
{
if (mOwner)
{
delete1(mVertices);
}
}
//----------------------------------------------------------------------------
template <typename Real>
const Real* Delaunay1<Real>::GetVertices () const
{
return mVertices;
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::GetHull (int hull[2])
{
assertion(mDimension == 1, "The dimension must be 1\n");
if (mDimension != 1)
{
return false;
}
hull[0] = mIndices[0];
hull[1] = mIndices[2*mNumSimplices - 1];
return true;
}
//----------------------------------------------------------------------------
template <typename Real>
int Delaunay1<Real>::GetContainingSegment (const Real p) const
{
assertion(mDimension == 1, "The dimension must be 1\n");
if (mDimension != 1)
{
return -1;
}
if (p < mVertices[mIndices[0]])
{
return -1;
}
if (p > mVertices[mIndices[2*mNumSimplices - 1]])
{
return -1;
}
int i;
for (i = 0; i < mNumSimplices; ++i)
{
if (p <= mVertices[mIndices[2*i + 1]])
{
break;
}
}
assertion(i < mNumSimplices, "Input not in hull\n");
return i;
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::GetVertexSet (int i, Real vertices[2]) const
{
assertion(mDimension == 1, "The dimension must be 1\n");
if (mDimension != 1)
{
return false;
}
if (0 <= i && i < mNumSimplices)
{
vertices[0] = mVertices[mIndices[2*i]];
vertices[1] = mVertices[mIndices[2*i + 1]];
return true;
}
return false;
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::GetIndexSet (int i, int indices[2]) const
{
assertion(mDimension == 1, "The dimension must be 1\n");
if (mDimension != 1)
{
return false;
}
if (0 <= i && i < mNumSimplices)
{
indices[0] = mIndices[2*i];
indices[1] = mIndices[2*i + 1];
return true;
}
return false;
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::GetAdjacentSet (int i, int adjacencies[2]) const
{
assertion(mDimension == 1, "The dimension must be 1\n");
if (mDimension != 1)
{
return false;
}
if (0 <= i && i < mNumSimplices)
{
adjacencies[0] = mAdjacencies[2*i];
adjacencies[1] = mAdjacencies[2*i + 1];
return true;
}
return false;
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::GetBarycentricSet (int i, const Real p, Real bary[2])
const
{
assertion(mDimension == 1, "The dimension must be 1\n");
if (mDimension != 1)
{
return false;
}
if (0 <= i && i < mNumSimplices)
{
Real v0 = mVertices[mIndices[2*i]];
Real v1 = mVertices[mIndices[2*i + 1]];
Real denom = v1 - v0;
if (denom > mEpsilon)
{
bary[0] = (v1 - p)/denom;
}
else
{
bary[0] = (Real)1;
}
bary[1] = (Real)1 - bary[0];
return true;
}
return false;
}
//----------------------------------------------------------------------------
template <typename Real>
Delaunay1<Real>::Delaunay1 (const char* filename, int mode)
:
Delaunay<Real>(0, (Real)0, false, Query::QT_REAL)
{
mVertices = 0;
bool loaded = Load(filename, mode);
assertion(loaded, "Cannot open file %s\n", filename);
WM5_UNUSED(loaded);
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::Load (const char* filename, int mode)
{
FileIO inFile(filename, mode);
if (!inFile)
{
return false;
}
Delaunay<Real>::Load(inFile);
if (mOwner)
{
delete1(mVertices);
}
mOwner = true;
mVertices = new1<Real>(mNumVertices);
inFile.Read(sizeof(Real), mNumVertices, mVertices);
inFile.Close();
return true;
}
//----------------------------------------------------------------------------
template <typename Real>
bool Delaunay1<Real>::Save (const char* filename, int mode) const
{
FileIO outFile(filename, mode);
if (!outFile)
{
return false;
}
Delaunay<Real>::Save(outFile);
outFile.Write(sizeof(Real), mNumVertices, mVertices);
outFile.Close();
return true;
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Explicit instantiation.
//----------------------------------------------------------------------------
template WM5_MATHEMATICS_ITEM
class Delaunay1<float>;
template WM5_MATHEMATICS_ITEM
class Delaunay1<double>;
//----------------------------------------------------------------------------
}
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