Commit ade634ff authored by Michael Turner's avatar Michael Turner

missing file

parent b2b47a33
////////////////////////////////////////////////////////////////////////////////
//
// File: CADSystem.cpp
//
// For more information, please see: http://www.nektar.info/
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// License for the specific language governing rights and limitations under
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Description: cad object methods.
//
////////////////////////////////////////////////////////////////////////////////
#include "CADCurve.h"
#include "CADSurf.h"
using namespace std;
namespace Nektar
{
namespace NekMeshUtils
{
Array<OneD, NekDouble> CADCurve::NormalWRT(NekDouble t, int surf)
{
Array<OneD, NekDouble> p = P(t);
pair<CADSurfSharedPtr, CADOrientation::Orientation> surface;
ASSERTL0(m_adjSurfs.size() == 1,
"This will only work in 2D for one surface at the moment");
surface = m_adjSurfs[0];
Array<OneD, NekDouble> uv;
surface.first->locuv(p, uv);
Array<OneD, NekDouble> d1 = surface.first->D1(uv);
NekDouble t1 = t - 1e-8;
NekDouble t2 = t + 1e-8;
if (surface.second == CADOrientation::eBackwards)
{
swap(t1, t2);
}
Array<OneD, NekDouble> uv1;
surface.first->locuv(P(t1), uv1);
Array<OneD, NekDouble> uv2;
surface.first->locuv(P(t2), uv2);
NekDouble du = uv2[1] - uv1[1];
NekDouble dv = -1.0 * (uv2[0] - uv1[0]);
Array<OneD, NekDouble> N(3, 0.0);
N[0] = (d1[3] * du + d1[6] * dv) / 2.0;
N[1] = (d1[4] * du + d1[7] * dv) / 2.0;
N[2] = (d1[5] * du + d1[8] * dv) / 2.0;
NekDouble mag = sqrt(N[0] * N[0] + N[1] * N[1] + N[2] * N[2]);
N[0] /= mag;
N[1] /= mag;
N[2] /= mag;
return N;
}
CADOrientation::Orientation CADCurve::GetOrienationWRT(int surf)
{
for (int i = 0; i < m_adjSurfs.size(); i++)
{
if (m_adjSurfs[i].first->GetId() == surf)
{
return m_adjSurfs[i].second;
}
}
ASSERTL0(false, "surf not in adjecency list");
return CADOrientation::eUnknown;
}
}
}
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