Program Listing for File TetMesh.h

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/*
 * ***************************************************************************
 * This file is part of the GAMer software.
 * Copyright (C) 2016-2018
 * by Christopher Lee, John Moody, Rommie Amaro, J. Andrew McCammon,
 *    and Michael Holst
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * ***************************************************************************
 */

#pragma once

#include <sstream>
#include <memory>
#include <string>
#include <unordered_set>
#include <utility>

#include <gamer/gamer.h>

#define TETLIBRARY
#include <tetgen.h>

#include <casc/casc>

#include "gamer/Vertex.h"
#include "gamer/SurfaceMesh.h"

class tetgenio;

namespace gamer
{
struct TMGlobal
{
    bool higher_order;
};

struct TMVertexProperties
{
    double error;

    TMVertexProperties() : error(-1) {}

    TMVertexProperties(double error) : error(error) {}
};

struct TMVertex : Vertex, TMVertexProperties
{
    TMVertex() : TMVertex(Vertex(), TMVertexProperties()) {}
    template<typename ... Args>
    TMVertex(Args && ... args) : TMVertex(Vertex(std::forward<Args>(args)...)) {}
    TMVertex(Vertex v) : TMVertex(v, TMVertexProperties(-1)) {}
    TMVertex(Vertex v, TMVertexProperties p) : Vertex(v), TMVertexProperties(p) {}

    friend std::ostream &operator<<(std::ostream &output, const TMVertex &v)
    {
        output << "TMVertex(x:" << v[0]
               << ",y:" << v[1]
               << ",z:" << v[2]
               << ";m:" << v.marker
               << ";sel:" << v.selected
               << ";err:" << v.error
               << ")";
        return output;
    }

    std::string to_string() const
    {
        std::ostringstream output;
        output << *this;
        return output.str();
    }
};


struct TMEdge : Vertex
{
    using Vertex::Vertex;

    friend std::ostream &operator<<(std::ostream &output, const TMEdge &v)
    {
        output << "TMEdge(x:" << v[0]
               << ",y:" << v[1]
               << ",z:" << v[2]
               << ";m:" << v.marker
               << ";sel:" << v.selected
               << ")";
        return output;
    }

    std::string to_string() const
    {
        std::ostringstream output;
        output << *this;
        return output.str();
    }
};

struct TMFaceProperties
{
    int  marker;
    bool selected;
};

struct TMFace : TMFaceProperties
{
    TMFace() : TMFace(TMFaceProperties{-1, false}) {}

    TMFace(int marker, bool selected) : TMFace(TMFaceProperties{marker, selected}) {}

    TMFace(TMFaceProperties prop) : TMFaceProperties(prop) {}

    friend std::ostream &operator<<(std::ostream &output, const TMFace &f)
    {
        output << "TMFace("
               << "m:" << f.marker
               << ";sel:" << f.selected << ")";
        return output;
    }

    std::string to_string() const
    {
        std::ostringstream output;
        output << *this;
        return output.str();
    }
};

struct TMCellProperties
{
    int  marker;
    bool selected;
};

struct TMCell : casc::Orientable, TMCellProperties
{
    TMCell() : TMCell(-1, false) {}


    TMCell(int marker, bool selected) : TMCell(0, marker, selected) {}


    TMCell(int orient, int marker, bool selected) : TMCell(Orientable{orient}, TMCellProperties{marker, selected}) {}

    TMCell(Orientable orient, TMCellProperties prop)
        : Orientable(orient), TMCellProperties(prop)
    {}

    friend std::ostream &operator<<(std::ostream &output, const TMCell &c)
    {
        output << "tetmesh::Cell("
               << "m:" << c.marker
               << ";sel:" << std::boolalpha << c.selected
               << ";o:" << c.orientation << ")";
        return output;
    }

    std::string to_string() const
    {
        std::ostringstream output;
        output << *this;
        return output.str();
    }
};

namespace tetmesh_detail{
struct tetmesh_traits
{
    using KeyType = int;
    using NodeTypes = util::type_holder<TMGlobal, TMVertex, TMEdge, TMFace, TMCell>;
    using EdgeTypes = util::type_holder<casc::Orientable, casc::Orientable, casc::Orientable, casc::Orientable>;
};
} // end namespace tetmesh_detail

using TetMesh = casc::simplicial_complex<tetmesh_detail::tetmesh_traits>;

std::unique_ptr<TetMesh> tetgenioToTetMesh(tetgenio &tetio);

std::unique_ptr<TetMesh> makeTetMesh(
    const std::vector<SurfaceMesh*> &surfmeshes,
    std::string                      tetgen_params);

std::unique_ptr<SurfaceMesh> extractSurface(const TetMesh &mesh);


void smoothMesh(TetMesh &mesh);

void writeVTK(const std::string &filename, const TetMesh &mesh);

void writeOFF(const std::string &filename, const TetMesh &mesh);

void writeDolfin(const std::string &filename, const TetMesh &mesh);

void writeTriangle(const std::string &filename, const TetMesh &mesh);

//void writeMCSF(const std::string &filename, const TetMesh &mesh);
//void writeDiffPack
//void writeCARP

std::unique_ptr<TetMesh> readDolfin(const std::string &filename);
} // end namespace gamer