Ejemplo n.º 1
0
        public static int SolvePart2(int[,] input)
        {
            var vektors = Vektor.Transform(input).ToList();
            var map     = new int[vektors.Max(v => v.X) + 1, vektors.Max(v => v.Y) + 1];

            for (var x = 0; x < map.GetLength(0); x++)
            {
                for (var y = 0; y < map.GetLength(1); y++)
                {
                    // Find closest vektor(s)
                    var distanceToAll = vektors.Sum(v => v.Distance(x, y));
                    map[x, y] = distanceToAll;
                }
            }

            // Debug printing to image
            CreateDistanceImage(map);

            var sumArea = 0;

            foreach (var point in map)
            {
                if (point > 0 && point < 10000)
                {
                    sumArea += 1;
                }
            }

            return(sumArea);
        }
Ejemplo n.º 2
0
        public static double noktaUret(Vektor v1, Vektor v2)
        {
            Vektor v3 = v1.normalize();
            Vektor v4 = v2.normalize();

            return(v3.X * v4.X + v3.Y * v4.Y);
        }
Ejemplo n.º 3
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public Algebraic integrate(Variable var) throws JasymcaException
    public override Algebraic integrate(Variable @var)
    {
        if (!den.depends(@var))
        {
            return(nom.integrate(@var).div(den));
        }
        Algebraic quot = den.deriv(@var).div(nom);

        if (quot.deriv(@var).Equals(Zahl.ZERO))
        {
            return(FunctionVariable.create("log", den).div(quot));
        }
        Algebraic[] q = new Algebraic[] { nom, den };
        Poly.polydiv(q, @var);
        if (!q[0].Equals(Zahl.ZERO) && nom.ratfunc(@var) && den.ratfunc(@var))
        {
            return(q[0].integrate(@var).add(q[1].div(den).integrate(@var)));
        }
        if (ratfunc(@var))
        {
            Algebraic r = Zahl.ZERO;
            Vektor    h = horowitz(nom, den, @var);
            if (h.get(0) is Rational)
            {
                r = r.add(h.get(0));
            }
            if (h.get(1) is Rational)
            {
                r = r.add((new TrigInverseExpand()).f_exakt(((Rational)h.get(1)).intrat(@var)));
            }
            return(r);
        }
        throw new JasymcaException("Could not integrate Function " + this);
    }
Ejemplo n.º 4
0
            public static float Cosinus(Vektor first, Vektor second)
            {
                var result = (first.OX * second.OX + first.OY * second.OY) / (Math.Abs(first.OX + second.OX) *
                                                                              Math.Abs(first.OY + second.OY));

                return(result);
            }
Ejemplo n.º 5
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static Vektor Gauss(Matrix a, Vektor c) throws JasymcaException
    public static Vektor Gauss(Matrix a, Vektor c)
    {
        int n = c.length();

        Algebraic[] x = new Algebraic[n];
        for (int k = 0; k < n - 1; k++)
        {
            pivot(a, c, k);
            if (!a.get(k, k).Equals(Zahl.ZERO))
            {
                for (int i = k + 1; i < n; i++)
                {
                    Algebraic factor = a.get(i, k).div(a.get(k, k));
                    for (int j = k + 1; j < n; j++)
                    {
                        a.set(i, j, a.get(i, j).sub(factor.mult(a.get(k, j))));
                    }
                    c.set(i, c.get(i).sub(factor.mult(c.get(k))));
                }
            }
        }
        x[n - 1] = c.get(n - 1).div(a.get(n - 1, n - 1));
        for (int i = n - 2; i >= 0; i--)
        {
            Algebraic sum = Zahl.ZERO;
            for (int j = i + 1; j < n; j++)
            {
                sum = sum.add(a.get(i, j).mult(x[j]));
            }
            x[i] = c.get(i).sub(sum).div(a.get(i, i));
        }
        return(new Vektor(x));
    }
Ejemplo n.º 6
0
    internal static Vektor teiler(long X)
    {
        ArrayList teiler = new ArrayList();

        while (X % 2L == 0)
        {
            teiler.Add(Zahl.TWO);
            X /= 2L;
        }
        while (X % 3L == 0)
        {
            teiler.Add(Zahl.THREE);
            X /= 3L;
        }
        while (X % 5L == 0)
        {
            teiler.Add(new Unexakt(5.0));
            X /= 5L;
        }
        long f = 7L;

        while (X != 1L)
        {
            f = kleinsterTeiler(X, f);
            if (f < 0)
            {
                return(null);
            }
            teiler.Add(new Exakt(f, 1L));
            X /= f;
        }
        return(Vektor.create(teiler));
    }
Ejemplo n.º 7
0
        private static void CreateVektorImage(int[,] map, Vektor biggestVektor)
        {
            var image = new Bitmap(map.GetLength(0), map.GetLength(1));

            for (var x = 0; x < map.GetLength(0); x++)
            {
                for (var y = 0; y < map.GetLength(1); y++)
                {
                    var   val = map[x, y];
                    Color color;
                    if (val == -2)
                    {
                        color = Color.Black;
                    }
                    else if (val == -1)
                    {
                        color = Color.White;
                    }
                    else if (val == biggestVektor.Index)
                    {
                        color = Color.Red;
                    }
                    else
                    {
                        color = ColorRGB.FromHSL(val / 60d, 1.0, .5);
                    }
                    image.SetPixel(x, y, color);
                }
            }
            image.Save("vektor_map.bmp");
        }
Ejemplo n.º 8
0
    public virtual Vektor eigenvalues()
    {
        Variable   x = SimpleVariable.top;
        Polynomial p = charpoly(x);

        Algebraic[] ps = p.square_free_dec(p.v);
        Vektor      r;
        ArrayList   v = new ArrayList();

        for (int i = 0; i < ps.Length; i++)
        {
            if (ps[i] is Polynomial)
            {
                r = ((Polynomial)ps[i]).monic().roots();
                for (int k = 0; r != null && k < r.length(); k++)
                {
                    for (int j = 0; j <= i; j++)
                    {
                        v.Add(r.get(k));
                    }
                }
            }
        }
        return(Vektor.create(v));
    }
Ejemplo n.º 9
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private static int pivot(Matrix a, Vektor c, int k) throws JasymcaException
    private static int pivot(Matrix a, Vektor c, int k)
    {
        int    pivot = k, n = c.length();
        double maxa = a.get(k, k).norm();

        for (int i = k + 1; i < n; i++)
        {
            double dummy = a.get(i, k).norm();
            if (dummy > maxa)
            {
                maxa  = dummy;
                pivot = i;
            }
        }
        if (pivot != k)
        {
            for (int j = k; j < n; j++)
            {
                var dummy = a.get(pivot, j);
                a.set(pivot, j, a.get(k, j));
                a.set(k, j, dummy);
            }
            {
                var dummy = c.get(pivot);
                c.set(pivot, c.get(k));
                c.set(k, dummy);
            }
        }
        return(pivot);
    }
Ejemplo n.º 10
0
        private static List <CoorinateFloat> ConvexPolygon(List <CoorinateFloat> coordinates)
        {
            var firstPoint = FindStartPoint(coordinates);
            var pointsList = SortedPointsByCos(coordinates, firstPoint);
            var niceFigure = new List <CoorinateFloat>();

            niceFigure.Add(firstPoint);
            niceFigure.Add(pointsList.First());

            var firstPointForAlgo = firstPoint;
            var currentVektor     = new Vektor(firstPointForAlgo, pointsList.First());

            foreach (var point in pointsList)
            {
                var nextVektor = new Vektor(firstPointForAlgo, point);

                if (VektorOperation.IsNiceComposition(currentVektor, nextVektor))
                {
                    currentVektor     = nextVektor;
                    firstPointForAlgo = point;
                    niceFigure.Add(point);
                }
            }
            niceFigure.Add(firstPoint);
            return(niceFigure);
        }
Ejemplo n.º 11
0
    public override int lambda(Stack st)
    {
        int  narg = getNarg(st);
        List cond = getList(st);
        List body = getList(st);

        pc.process_list(cond, true);
        if (pc.stack.Count == 0 || !(pc.stack.Peek() is Vektor) || ((Algebraic)pc.stack.Peek()).Name == null)
        {
            throw new ParseException("Wrong format in for-loop.");
        }
        Vektor vals = (Vektor)pc.stack.Pop();

        for (int i = 0; i < vals.length(); i++)
        {
            pc.env.putValue(vals.Name, vals.get(i));
            int ret = pc.process_list(body, true);
            switch (ret)
            {
            case Processor.BREAK:
                return(0);

            case Processor.RETURN:
            case Processor.EXIT:
            case Processor.ERROR:
                return(ret);

            case Processor.CONTINUE: break;
            }
        }
        return(0);
    }
Ejemplo n.º 12
0
        private static List <CoorinateFloat> SortedPointsByCos(List <CoorinateFloat> coordinates, CoorinateFloat firstPoint)
        {
            var vektorList     = GetVektors(coordinates, firstPoint);
            var verticalVektor = new Vektor(firstPoint, new CoorinateFloat(firstPoint.X, firstPoint.Y + 1));
            var sortedVektors  = vektorList.OrderByDescending(z => VektorOperation.Cosinus(verticalVektor, z)).Select(z => z.PointEnd).ToList();

            return(sortedVektors);
        }
Ejemplo n.º 13
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private static void elim(Vektor expr, Vektor vars, int n) throws JasymcaException
    private static void elim(Vektor expr, Vektor vars, int n)
    {
        if (n >= expr.length())
        {
            return;
        }
        double     maxc = 0.0;
        int        iv = 0, ie = 0;
        Variable   vp = null;
        Algebraic  f  = Zahl.ONE;
        Polynomial pm = null;

        for (int i = 0; i < vars.length(); i++)
        {
            Variable v = ((Polynomial)vars.get(i)).v;
            for (int k = n; k < expr.length(); k++)
            {
                Algebraic pa = expr.get(k);
                if (pa is Polynomial)
                {
                    Polynomial p  = (Polynomial)pa;
                    Algebraic  c  = p.coefficient(v, 1);
                    double     nm = c.norm();
                    if (nm > maxc)
                    {
                        maxc = nm;
                        vp   = v;
                        ie   = k;
                        iv   = i;
                        f    = c;
                        pm   = p;
                    }
                }
            }
        }
        if (maxc == 0.0)
        {
            return;
        }
        expr.set(ie, expr.get(n));
        expr.set(n, pm);
        for (int i = n + 1; i < expr.length(); i++)
        {
            Algebraic p = expr.get(i);
            if (p is Polynomial)
            {
                Algebraic fc = ((Polynomial)p).coefficient(vp, 1);
                if (!fc.Equals(Zahl.ZERO))
                {
                    p = p.sub(pm.mult(fc.div(f)));
                }
            }
            expr.set(i, p);
        }
        elim(expr, vars, n + 1);
    }
Ejemplo n.º 14
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public Polynomial(Variable var, Vektor v) throws JasymcaException
    public Polynomial(Variable @var, Vektor v)
    {
        this.v = @var;
        this.a = new Algebraic[v.length()];
        for (int i = 0; i < a.Length; i++)
        {
            a[i] = v.get(a.Length - 1 - i);
        }
        this.a = Poly.reduce(a);
    }
Ejemplo n.º 15
0
            public static bool IsNiceComposition(Vektor vek1, Vektor vek2)
            {
                var result = vek1.OX * vek2.OX + vek1.OY * vek2.OY;

                if (result > 0)
                {
                    return(true);
                }
                return(false);
            }
Ejemplo n.º 16
0
        private static List <Vektor> GetVektors(List <CoorinateFloat> coordinates, CoorinateFloat firstPoint)
        {
            var vektorList = new List <Vektor>();

            foreach (var point in coordinates.Where(z => z != firstPoint))
            {
                var vektor = new Vektor(firstPoint, point);
                vektorList.Add(vektor);
            }
            return(vektorList);
        }
Ejemplo n.º 17
0
            public static int Sis(Duz a, Tacka C, Tacka D)
            {
                Vektor AB  = new Vektor(a.A, a.B);
                Vektor AC  = new Vektor(a.A, C);
                double a_C = Vektor.vektorski(AB, AC);
                Vektor AD  = new Vektor(a.A, D);
                double a_D = Vektor.vektorski(AB, AD);

                /* if (a_C * a_D > 0) return true;
                 * else return false;*/
                return(Math.Sign(a_C * a_D));
            }
Ejemplo n.º 18
0
            public bool isCloseTo(Vektor vek)
            {
                int n = 0;

                for (int i = 0; i < this.size; i++)
                {
                    if (this.komponente[i] == vek.komponente[i])
                    {
                        n++;
                    }
                }
                return(n >= 2);
            }
Ejemplo n.º 19
0
        public override zwischenSpeicher scatter(ray r_in, hit_record rec, Vektor attenuation, ray scattered)
        {
            zwischenSpeicher zw        = new zwischenSpeicher();
            Vektor           reflected = Vektor.reflect(Vektor.unit_Vektor(r_in.Direction), rec.normal);

            scattered   = new ray(rec.p, reflected + fuzz * Vektor.random_in_unit_sphere());
            attenuation = albedo;

            zw.scattered   = scattered;
            zw.attenuation = attenuation;
            zw.IsTrue      = (Vektor.dot(scattered.Direction, rec.normal) > 0.0);

            return(zw);
        }
Ejemplo n.º 20
0
        static void Main(string[] args)
        {
            Vektor[] list = new Vektor[6];
            Random   r    = new Random();

            for (int i = 0; i < list.Length; i++)
            {
                list[i] = new Vektor(r.Next(1, 5), r.Next(1, 5), r.Next(1, 5));
                Console.WriteLine(list[i]);
            }
            findSimilarVectors(list);
            findSimilarVectorsFine(list);
            Console.ReadKey();
        }
Ejemplo n.º 21
0
    static Vektor teiler(BigInteger X)
    {
        var teiler = new ArrayList();
        var b2     = BigInteger.valueOf(2L);

        while (X.mod(b2).Equals(BigInteger.ZERO))
        {
            teiler.Add(Zahl.TWO);

            X = X.divide(b2);
        }

        var b3 = BigInteger.valueOf(3L);

        while (X.mod(b3).Equals(BigInteger.ZERO))
        {
            teiler.Add(Zahl.THREE);

            X = X.divide(b3);
        }

        var b5 = BigInteger.valueOf(5L);

        while (X.mod(b5).Equals(BigInteger.ZERO))
        {
            teiler.Add(new Unexakt(5.0));

            X = X.divide(b5);
        }

        var f = BigInteger.valueOf(7L);

        while (!X.Equals(BigInteger.ONE))
        {
            f = kleinsterTeiler(X, f);

            if (f == null)
            {
                return(null);
            }

            teiler.Add(new Exakt(f));

            X = X.divide(f);
        }

        return(Vektor.create(teiler));
    }
Ejemplo n.º 22
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public int lambda2(Stack st) throws ParseException, JasymcaException
    public virtual int lambda2(Stack st)
    {
        int narg = getNarg(st);

        if (narg != 2)
        {
            throw new ParseException("linsolve requires 2 arguments.");
        }
        Vektor expr = (Vektor)getVektor(st).rat();
        Vektor vars = getVektor(st);

        elim(expr, vars, 0);
        subst(expr, vars, expr.length() - 1);
        st.Push(expr);
        return(0);
    }
Ejemplo n.º 23
0
        public int GenerisiZahtjev(int brojBloka, int brojVektora, int brojElementa)
        {
            int        ret       = -1;
            IIdentity  id        = Thread.CurrentPrincipal.Identity;
            IPrincipal principal = Thread.CurrentPrincipal;

            WindowsIdentity wId = id as WindowsIdentity;

            if (principal.IsInRole("Trazi"))
            {
                Audit.AuthorizationSuccess(Formatter.VratiIme((principal as CustomPrincipal).Identity.Name), OperationContext.Current.IncomingMessageHeaders.Action);

                Console.WriteLine("\n-------------------------------------------");
                Console.WriteLine("Klijent je generisao brojeve: " + brojBloka.ToString() + "," + brojVektora.ToString() + "," + brojElementa.ToString());
                Dictionary <int, Blok> blok = InterniModel.blokovi;
                Blok b = blok[brojBloka];
                Dictionary <int, Vektor> vektor = b.GetVektori;
                Vektor v = vektor[brojVektora];
                Dictionary <int, Alarm> alarm = v.GetElementi;
                Alarm a = alarm[brojElementa];
                if (a == null)
                {
                    Console.WriteLine("Na zadatoj poziciji nema alarma.");
                    Console.WriteLine("-------------------------------------------\n");
                    ret = 0;
                }
                else
                {
                    Console.WriteLine("\n-------------------------------------------");
                    Console.WriteLine("PRONADJENI ALARM: \nPoruka: {0} \nVreme generisanja : {1} \nRizik: {2}", a.PorukaOAlarmu, a.VrijemeGenerisanjaAlarma, a.Rizik);
                    Console.WriteLine("-------------------------------------------\n");
                    new BazaPodataka().Upisi(a, Formatter.VratiIme((principal as CustomPrincipal).Identity.Name));
                    ret = 1;
                }
            }

            else
            {
                Audit.AuthorizationFailed(Formatter.VratiIme((principal as CustomPrincipal).Identity.Name), OperationContext.Current.IncomingMessageHeaders.Action, "Authorization failed.");

                MyException ex = new MyException();
                ex.Message = "Nemate pravo 'Trazi'!";
                throw new FaultException <MyException>(ex);
            }

            return(ret);
        }
Ejemplo n.º 24
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static Vektor substitution(Matrix a, Vektor c) throws JasymcaException
    public static Vektor substitution(Matrix a, Vektor c)
    {
        int n = c.length();

        Algebraic[] x = new Algebraic[n];
        x[n - 1] = c.get(n - 1).div(a.get(n - 1, n - 1));
        for (int i = n - 2; i >= 0; i--)
        {
            Algebraic sum = Zahl.ZERO;
            for (int j = i + 1; j < n; j++)
            {
                sum = sum.add(a.get(i, j).mult(x[j]));
            }
            x[i] = c.get(i).sub(sum).div(a.get(i, i));
        }
        return(new Vektor(x));
    }
Ejemplo n.º 25
0
            public static double Ugao(Vektor a, Vektor b)
            {
                double ugao_a = Math.Atan2(a.y, a.x) * 180 / Math.PI;
                double ugao_b = Math.Atan2(b.y, b.x) * 180 / Math.PI;

                // Console.WriteLine("u1=" + ugao_a + " u2=" + ugao_b );

                if (ugao_b - ugao_a < -180)
                {
                    return(ugao_b - ugao_a + 360);
                }
                if (ugao_b - ugao_a > 180)
                {
                    return(ugao_b - ugao_a - 360);
                }
                return(ugao_b - ugao_a);
            }
Ejemplo n.º 26
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private static void eliminierung(Matrix a, Vektor c) throws JasymcaException
    private static void eliminierung(Matrix a, Vektor c)
    {
        int n = c.length();

        for (int k = 0; k < n - 1; k++)
        {
            pivot(a, c, k);
            for (int i = k + 1; i < n; i++)
            {
                Algebraic factor = a.get(i, k).div(a.get(k, k));
                for (int j = k; j < n; j++)
                {
                    a.set(i, j, a.get(i, j).sub(factor.mult(a.get(k, j))));
                }
                c.set(i, c.get(i).sub(factor.mult(c.get(k))));
            }
        }
    }
Ejemplo n.º 27
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: Algebraic intrat(Variable x) throws JasymcaException
    internal virtual Algebraic intrat(Variable x)
    {
        Algebraic de = den.deriv(x);

        if (de is Zahl)
        {
            return(makelog(nom.div(de), x, den.a[0].mult(Zahl.MINUS).div(de)));
        }
        Algebraic r  = nom.div(de);
        Vektor    xi = den.monic().roots();
        Algebraic rs = Zahl.ZERO;

        for (int i = 0; i < xi.length(); i++)
        {
            Algebraic c = r.value(x, xi.get(i));
            rs = rs.add(makelog(c, x, xi.get(i)));
        }
        return(rs);
    }
Ejemplo n.º 28
0
        public override zwischenSpeicher scatter(ray r_in, hit_record rec, Vektor attenuation, ray scattered)
        {
            zwischenSpeicher zw   = new zwischenSpeicher();
            var scatter_direction = rec.normal + Vektor.random_unit_vektor();

            //catch degenerate scatter direction
            if (scatter_direction.near_zero())
            {
                scatter_direction = rec.normal;
            }

            scattered   = new ray(rec.p, scatter_direction);
            attenuation = albedo;

            zw.scattered   = scattered;
            zw.attenuation = attenuation;
            zw.IsTrue      = true;

            return(zw);
        }
Ejemplo n.º 29
0
    public virtual Algebraic find()
    {
        ArrayList v = new ArrayList();

        for (int i = 0; i < nrow(); i++)
        {
            for (int k = 0; k < ncol(); k++)
            {
                if (!Zahl.ZERO.Equals(a[i][k]))
                {
                    v.Add(new Unexakt(i * nrow() + k + 1.0));
                }
            }
        }
        Vektor vx = Vektor.create(v);

        if (nrow() == 1)
        {
            return(vx);
        }
        return(column(vx));
    }
Ejemplo n.º 30
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private static void subst(Vektor expr, Vektor vars, int n) throws JasymcaException
    private static void subst(Vektor expr, Vektor vars, int n)
    {
        if (n < 0)
        {
            return;
        }
        Algebraic pa = expr.get(n);

        if (pa is Polynomial)
        {
            Polynomial p = (Polynomial)pa;
            Variable   v = null;
            Algebraic  c1 = null, c0;
            for (int k = 0; k < vars.length(); k++)
            {
                Variable va = ((Polynomial)vars.get(k)).v;
                c1 = p.coefficient(va, 1);
                if (!c1.Equals(Zahl.ZERO))
                {
                    v = va;
                    break;
                }
            }
            if (v != null)
            {
                expr.set(n, p.div(c1));
                Algebraic val = p.coefficient(v, 0).mult(Zahl.MINUS).div(c1);
                for (int k = 0; k < n; k++)
                {
                    Algebraic ps = expr.get(k);
                    if (ps is Polynomial)
                    {
                        expr.set(k, ((Polynomial)ps).value(v, val));
                    }
                }
            }
        }
        subst(expr, vars, n - 1);
    }
Ejemplo n.º 31
0
 private void boardPanel_Paint(object sender, PaintEventArgs e)
 {
     // Spielsteine
     List<Vektor> z = ReversiLogik.MöglicheZüge(game.Feld, game.AktuellerSpieler);
     for (int y = 0; y < 6; y++)
     {
         for (int x = 0; x < 6; x++)
         {
             e.Graphics.FillRectangle(new SolidBrush(Farben[game.Feld[x, y]]),
                 boardPanel.ClientRectangle.Left + x * fieldw,
                 boardPanel.ClientRectangle.Top + y * fieldh,
                 fieldw, fieldh);
             if (z.Contains(new Vektor(x ,y)))
                 e.Graphics.DrawEllipse(Pens.White,
                     boardPanel.ClientRectangle.Left + x * fieldw,
                     boardPanel.ClientRectangle.Top + y * fieldh,
                     fieldw, fieldh);
             // evtl. Bewertung
             Vektor v = new Vektor(x, y);
             if (game.Bewertungen.ContainsKey(v))
                 e.Graphics.DrawString(game.Bewertungen[v].ToString(), DefaultFont, Brushes.White,
                     fieldw * x + 2.0f, fieldh * y + 2.0f);
         }
     }
     // Linien
     for (int i = 1; i <= 6; i++)
     {
         e.Graphics.DrawLine(SystemPens.ControlDark,
             boardPanel.ClientRectangle.Left + i * fieldw,
             boardPanel.ClientRectangle.Top,
             boardPanel.ClientRectangle.Left + i * fieldw,
             boardPanel.ClientRectangle.Top + 6 * fieldh);
     }
     for (int i = 0; i <= 6; i++)
     {
         e.Graphics.DrawLine(SystemPens.ControlDark,
             boardPanel.ClientRectangle.Left,
             boardPanel.ClientRectangle.Top + i * fieldh,
             boardPanel.ClientRectangle.Left + 6 * fieldw,
             boardPanel.ClientRectangle.Top + i * fieldh);
     }
 }