function cmz(x) {
    return x === '-0' ? '0' : x;
}
var Vertex = /** @class */ (function () {
    function Vertex(_x, _y, _z) {
        this.x = _x;
        this.y = _y;
        this.z = _z;
        this.key = [parseFloat(_x), parseFloat(_y), parseFloat(_z)];
    }
    return Vertex;
}());
var Normal = /** @class */ (function () {
    function Normal(_dx, _dy, _dz) {
        this.dx = _dx;
        this.dy = _dy;
        this.dz = _dz;
    }
    return Normal;
}());
var Facet = /** @class */ (function () {
    function Facet(_normal, _v1, _v2, _v3) {
        this.normal = _normal;
    }
    return Facet;
}());
/*
class Facet:
    def __init__(self, normal, v1, v2, v3):
        self.normal = normal
        if v1.key < v2.key:
            if v1.key < v3.key:
                self.vertices = (v1, v2, v3)    #v1 is the smallest
            else:
                self.vertices = (v3, v1, v2)    #v3 is the smallest
        else:
            if v2.key < v3.key:
                self.vertices = (v2, v3, v1)    #v2 is the smallest
            else:
                self.vertices = (v3, v1, v2)    #v3 is the smallest

    def key(self):
        return (self.vertices[0].x, self.vertices[0].y, self.vertices[0].z,
                self.vertices[1].x, self.vertices[1].y, self.vertices[1].z,
                self.vertices[2].x, self.vertices[2].y, self.vertices[2].z)
          */