triangleSet.h

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/* This file is part of the Palabos library.
 *
 * Copyright (C) 2011 FlowKit Sarl
 * Avenue de Chailly 23
 * 1012 Lausanne, Switzerland
 * E-mail contact: contact@flowkit.com
 *
 * The most recent release of Palabos can be downloaded at 
 * <http://www.palabos.org/>
 *
 * The library Palabos is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * The 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/* Main author: Dimitrios Kontaxakis */

#ifndef TRIANGLE_SET_H
#define TRIANGLE_SET_H

#include "core/globalDefs.h"
#include "core/geometry3D.h"
#include "core/array.h"
#include <string>
#include <vector>
#include <cstdio>

namespace plb {

template<typename T>
class TriangleSet {
public:
    typedef Array<Array<T,3>,3> Triangle;
public:
    TriangleSet(Precision precision_ = FLT);
    TriangleSet(std::vector<Triangle> const& triangles_, Precision precision_ = FLT);
    TriangleSet(std::string fname, Precision precision_ = FLT, SurfaceGeometryFileFormat fformat = STL);
    std::vector<Triangle> const& getTriangles() const;
    Precision getPrecision() const { return precision; }
    void setPrecision(Precision precision_);

    void translate(Array<T,3> const& vector);
    void scale(T alpha);
    void rotate(T phi, T theta, T psi);
    void rotateAtOrigin(Array<T,3> const& normedAxis, T theta);

    void merge(std::vector<TriangleSet<T> > meshes);

    void reverseOrientation();

    void writeAsciiSTL(std::string fname) const;
    void writeBinarySTL(std::string fname) const;

    int cutWithPlane(Plane<T> const& plane, TriangleSet<T>& newTriangleSet) const;

    int cutWithPlane(Plane<T> const& plane, Cuboid<T> const& cuboid,
            TriangleSet<T>& newTriangleSet) const;

    T getMinEdgeLength() const { return minEdgeLength; }
    T getMaxEdgeLength() const { return maxEdgeLength; }

    Cuboid<T> getBoundingCuboid() const { return boundingCuboid; }

private:
    void readSTL(std::string fname);
    void readAsciiSTL(FILE* fp);
    void readBinarySTL(FILE* fp);
    void check(Triangle& triangle, Array<T,3> const& n);
    void computeMinMaxEdge(pluint iTriangle, T& minEdge, T& maxEdge) const;
    void computeMinMaxEdges();
    void computeBoundingCuboid();
    int cutTriangleWithPlane(Plane<T> const& plane, Triangle const& triangle,
            TriangleSet<T>& newTriangleSet) const;

private:
    std::vector<Triangle> triangles;
    T minEdgeLength, maxEdgeLength;
    Cuboid<T> boundingCuboid;
    Precision precision;
};

} // namespace plb

#endif  // TRIANGLE_SET_H