c#绘制中国象棋棋盘与棋子的方法-创新互联
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思路:
- 绘制中国象棋棋盘,竖线九条,横线十条。再中间绘制‘楚河',‘汉界' 。
- 绘制棋子,然后将棋子布局在棋盘上即可。
涉及知识点:
- 用户控件:用于实现棋盘的绘制,重写 OnPaint(PaintEventArgs e) 方法。
- Matrix:封装表示几何变换的 3x3 仿射矩阵。本例中主要用于旋转绘制反方的‘汉界'。
- GraphicsPath:表示一系列相互连接的直线和曲线。本例中主要用于绘制圆形棋子。
效果图如下:
(一)
(二)
核心代码
棋盘核心代码如下:
protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); //初始化数组 InitArrPieceInfo(); Graphics g = e.Graphics; int width = this.Width; int height = this.Height; int padding = this.Padding.All * 20; int center = height / 2;//垂直中心位置 int s_width = (width - 2 * padding) / 8;//每一条横线的间距 int s_heigth = (height - 2 * padding) / 9;//每一条竖线的间距 int start_x = padding;//起始位置 int start_y = padding;//起始位置 Pen pen = new Pen(Brushes.Black, 1.5f); DictionarydicNums = new Dictionary (); dicNums.Add("up", new string[9] { "1", "2", "3", "4", "5", "6", "7", "8", "9" }); dicNums.Add("down", new string[9] { "九", "八", "七", "六", "五", "四", "三", "二", "一" }); Font font = new Font("宋体", 12, FontStyle.Regular); for (int i = 0; i < 9; i++) { //竖线九条 Point p0 = new Point(start_x + i * s_width, start_y); Point p1 = new Point(start_x + i * s_width, start_y + (s_heigth * 4)); Point p2 = new Point(start_x + i * s_width, start_y + (s_heigth * 5)); Point p3 = new Point(start_x + i * s_width, start_y + (s_heigth * 9)); g.DrawLine(pen, p0, p1); g.DrawLine(pen, p2, p3); //上下的文字 Point p_up = new Point(start_x + i * s_width - 5, padding / 2); Point p_down = new Point(start_x + i * s_width - 5, start_y + (s_heigth * 9) + padding / 3); g.DrawString(dicNums["up"][i], font, Brushes.Black, p_up); g.DrawString(dicNums["down"][i], font, Brushes.Black, p_down); //数组赋值 for (int j = 0; j < 10; j++) { Point absLocation = ArrPiece[i, j].AbsoluteLocation; absLocation.X = start_x + i * s_width; ArrPiece[i, j].AbsoluteLocation = absLocation; } } for (int i = 0; i < 10; i++) { //横线十条 Point p0 = new Point(start_x, start_y + i * s_heigth); Point p1 = new Point(start_x + s_width * 8, start_y + i * s_heigth); g.DrawLine(pen, p0, p1); //数组赋值 for (int j = 0; j < 9; j++) { Point absLocation = ArrPiece[j, i].AbsoluteLocation; absLocation.Y = start_y + i * s_heigth; ArrPiece[j, i].AbsoluteLocation = absLocation; } } //绘制九宫格 for (int i = 0; i < 2; i++) { Point p0 = new Point(start_x + (3 + i * 2) * s_width, start_y); Point p1 = new Point(start_x + (5 - i * 2) * s_width, start_y + (s_heigth * 2)); Point p2 = new Point(start_x + (3 + i * 2) * s_width, start_y + (s_heigth * 7)); Point p3 = new Point(start_x + (5 - i * 2) * s_width, start_y + (s_heigth * 9)); g.DrawLine(pen, p0, p1); g.DrawLine(pen, p2, p3); } //兵和卒处有拐角,从左往右 for (int i = 0; i < 5; i++) { int p_x = start_x + 2 * i * s_width; int p_y = start_y + 3 * s_heigth; DrawCorner(g, pen, p_x, p_y);//兵 p_y = start_y + 6 * s_heigth; DrawCorner(g, pen, p_x, p_y);//卒 } //炮处的拐角,从左往右 for (int i = 0; i < 2; i++) { int p_x = start_x + (1 + 6 * i) * s_width; int p_y = start_y + 2 * s_heigth; DrawCorner(g, pen, p_x, p_y);//炮 p_y = start_y + 7 * s_heigth; DrawCorner(g, pen, p_x, p_y);//炮 } //绘制楚河汉界 Point p_0 = new Point(2 * s_width, center - 25); Point p_1 = new Point(7 * s_width, center + 20); font = new Font("方正隶二繁体", 30, FontStyle.Regular); g.DrawString("楚河", font, Brushes.Black, p_0); Matrix mtxSave = g.Transform; Matrix mtxRotate = g.Transform; mtxRotate.RotateAt(180, p_1); g.Transform = mtxRotate; g.DrawString("汉界", font, Brushes.Black, p_1); g.Transform = mtxSave; //绘制外边框 g.DrawRectangle(pen, 3, 3, width - 6, height - 6); g.DrawRectangle(pen, 5, 5, width - 10, height - 10); g.DrawRectangle(pen, 7, 7, width - 14, height - 14); }
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