private void setToGrid(Element el)
 {
     if (el is Convoyeur)
     {
         Convoyeur l = (Convoyeur)el;
         l.yGrid2 = (l.Y2) * _grille.nbCellule / (_grille.nbCellule * _grille.tailleCellule);
         l.xGrid2 = (l.X2) * _grille.nbCellule / (_grille.nbCellule * _grille.tailleCellule);
     }
     el.yGrid = (el.Y1) * _grille.nbCellule / (_grille.nbCellule * _grille.tailleCellule);
     el.xGrid = (el.X1) * _grille.nbCellule / (_grille.nbCellule * _grille.tailleCellule);
 }
        public bool add(Element el)
        {
            if (el is Convoyeur)
            {
                Convoyeur l     = (Convoyeur)el;
                bool      flag1 = false;
                bool      flag2 = false;
                Element   prov1 = null;
                Element   prov2 = null;
                foreach (Element li in LesElements)
                {
                    if (li is Convoyeur && el.xGrid == li.xGrid && el.yGrid == li.yGrid)
                    {
                        return(false);
                    }
                }
                foreach (Element element in LesElements)
                {
                    if (el.xGrid == element.xGrid && el.yGrid == element.yGrid)
                    {
                        flag1 = true;
                        prov1 = element;
                    }
                    if (l.xGrid2 == element.xGrid && l.yGrid2 == element.yGrid)
                    {
                        flag2 = true;
                        prov2 = element;
                    }
                }
                if (!flag1 || !flag2)
                {
                    return(false);
                }
                else
                {
                    prov1.Sorties.Add(el);
                    el.Sorties.Add(prov2);
                }
            }
            else if (el is Machine)
            {
                foreach (Element element in LesElements)
                {
                    if (el.xGrid == element.xGrid && el.yGrid == element.yGrid)
                    {
                        return(false);
                    }
                }
            }

            _LesElements.Add(el);
            return(true);
        }
        /// <summary>
        /// Dessin de la fenetre
        /// </summary>
        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            paintGrid(e);
            foreach (Element el in _grille.LesElements)
            {
                Pen LinePen = null;
                //SolidBrush Brush = null;
                TextureBrush brush = null;

                /*if (el.isSelected)
                 * {
                 *  LinePen = new Pen(Color.Blue, 3);
                 *  Brush = new SolidBrush(Color.Blue);
                 * }
                 * else
                 * {*/
                Bitmap bmp    = new Bitmap(el.ImgPath);
                Bitmap result = ResizeBitmap(bmp, _grille.tailleCellule, _grille.tailleCellule);
                brush = new TextureBrush(result);
                //}

                if (el is Convoyeur)
                {
                    LinePen = new Pen(Color.Red, 3);
                    Convoyeur l = (Convoyeur)el;
                    e.Graphics.DrawLine(LinePen, el.xGrid * _grille.tailleCellule + _grille.tailleCellule / 2, el.yGrid * _grille.tailleCellule + _grille.tailleCellule / 2, l.xGrid2 * _grille.tailleCellule + _grille.tailleCellule / 2, l.yGrid2 * _grille.tailleCellule + _grille.tailleCellule / 2);
                }
                else
                {
                    e.Graphics.FillRectangle(brush, (el.xGrid * _grille.tailleCellule + _grille.tailleCellule / 2) - (_grille.tailleCellule - 4) / 2, (el.yGrid * _grille.tailleCellule + _grille.tailleCellule / 2) - (_grille.tailleCellule - 4) / 2, _grille.tailleCellule - 2, _grille.tailleCellule - 2);
                }
            }

            if (IsMouseDown)
            {
                switch (CaseDraw)
                {
                case "Convoyeur":
                {
                    e.Graphics.DrawLine(new Pen(Color.Blue, 1), _StartX, _StartY, _CurX, _CurY);
                    break;
                }

                default:
                { break; }
                }
            }
            else
            {
                UpdateList(_grille.LesElements, listBox1.SelectedIndex);
            }
        }
        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            IsMouseDown = false;

            if (e.Button == MouseButtons.Left)
            {
                switch (CaseDraw)
                {
                case "Convoyeur":
                {
                    Convoyeur C = new Convoyeur(_StartX, _StartY, _CurX, _CurY);
                    setToGrid(C);
                    _grille.add(C);
                    break;
                }

                default:
                { break; }
                }
            }
            pictureBox1.Invalidate();
        }