#include "Mesh.hpp"

Mesh::Mesh()
    : center(Point(.0, .0, .0))
{
}

size_t Mesh::add_vertice(const Point& pt) {
    vertices.push_back(pt);
    return vertices.size() - 1;
}

void Mesh::add_face(const Face& face) {
    faces.push_back(face);
}
void Mesh::add_face(size_t f1, size_t f2, size_t f3) {
    add_face(Face(f1, f2, f3));
}

const Point& Mesh::get_center() const {
    return center;
}

void Mesh::set_center(const Point& pt) {
    center = pt;
}
void Mesh::translate(const Point& tr) {
    center += tr;
}

void Mesh::normalize_center(bool keep_position) {
    Point bary(0., 0., 0.);
    for(const Point& vert: vertices)
        bary += vert;
    bary = (1. / ((double)vertices.size())) * bary;

    for(Point& vert: vertices)
        vert -= bary;

    if(keep_position)
        translate(bary);
    else
        set_center(Point(0, 0, 0));
}

const std::vector<Point>& Mesh::get_vertices() const {
    return vertices;
}

const std::vector<Face>& Mesh::get_faces() const {
    return faces;
}