C#怎么绘制实时曲线

这篇文章主要讲解了“C#怎么绘制实时曲线”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“C#怎么绘制实时曲线”吧！

要做一个调试工具，采集传感器数据并显示。绘制曲线注意坐标反转，线条的张力即可。项目中的曲线是从右往左显示的，线条的坐标都放在list里了，效果如下图：

上代码

public class DrawinGCurve    {        private Graphics graphics; //Graphics 类提供将对象绘制到显示设备的方法        private Bitmap bitmap; //位图对象        private int timeLine = 60;//60s        private int canvasWidth = 600;//画布长度        private int sliceCount = 0;//刻度分段个数 = timeLine        private int xSlice = 10;//X轴刻度分端宽度        private int xSliceHeight = 10;//X轴刻度高度        private float tension = 0.5f; //张力系数        private bool showX = true;        private bool showY = true;        private bool showZ = true;         //Queue<PointF> que = new Queue<PointF>();//曲线fifo        /// <summary>        /// 构造函数        /// </summary>        public DrawingCurve() {            this.xSlice = this.canvasWidth / timeLine;        }         /// <summary>        /// 绘制画布        /// </summary>        /// <param name="width"></param>        /// <param name="height"></param>        /// <param name="points"></param>        /// <returns></returns>        public Bitmap DrawCanvas(int width, int height,List<float> points)        {            if (bitmap != null)            {                bitmap.Dispose();                bitmap = null;            }             bitmap = new Bitmap(width, height);            graphics = Graphics.FromImage(bitmap);            graphics.FillRectangle(Brushes.Black, new Rectangle(0, 0, width, height));            graphics.TransfORM = new Matrix(1, 0, 0, -1, 0, 0);//Y轴向上为正，X向右为            graphics.TranslateTransform(0, height / 2, MatrixOrder.Append);                        Pen pen = new Pen(Color.Red, 1);            pen.DashStyle = DashStyle.Custom;            pen.DashPattern = new float[] { 2, 2 };            graphics.DrawLine(pen, new Point(0, height / 4), new Point(width, height / 4));            graphics.DrawLine(pen, new Point(0, height / -4), new Point(width, height / -4));            graphics.DrawLine(new Pen(Color.GreenYellow,1), new Point(0, 0), new Point(width, 0));            graphics.DrawString("0", new Font("Vendara",10), Brushes.White, new Point(0, -15));            graphics.DrawString("+", new Font("Vendara", 10), Brushes.White, new Point(0, height / 4));            graphics.DrawString("-", new Font("Vendara", 10), Brushes.White, new Point(0, height / -4-15));            graphics.Transform = new Matrix(1, 0, 0, 1, 0, 0);//Y轴向上为正，X向右为            graphics.TranslateTransform(0, height / 2, MatrixOrder.Append);            graphics.DrawString("-59s", new Font("Vendara", 8), Brushes.White, new Point(0, height/2-15));            graphics.DrawString("0s", new Font("Vendara", 8), Brushes.White, new Point(width-20, height / 2 - 15));            for (int i = 0; i < timeLine; i++)            {                int scale = i * xSlice;                graphics.DrawLine(new Pen(new SolidBrush(Color.Blue)), 0 + scale, 0 + xSliceHeight * 0.1f, 0 + scale, 0 - xSliceHeight * 0.1f);            }             graphics.Transform = new Matrix(-1, 0, 0, -1, 0, 0);//Y轴向上为正，X向右为            graphics.TranslateTransform(width, height / 2, MatrixOrder.Append);             if (showX) DrawX(graphics, points);            if (showY) DrawY(graphics, points);            if (showZ) DrawZ(graphics, points);            graphics.Dispose();            return bitmap;        }         #region 绘制曲线        private void DrawX(Graphics graphics, List<float> points)        {            Pen CurvePen = new Pen(Color.Cyan, 2);            PointF[] CurvePointF = new PointF[points.Count];            float keys = 0;            float values = 0;            for (int i = 0; i < points.Count; i++)            {                keys = xSlice * i;                values = 10 * (points[i] / 10);                CurvePointF[i] = new PointF(keys, values);            }            graphics.DrawCurve(CurvePen, CurvePointF, this.tension);        }         private void DrawY(Graphics graphics, List<float> points)        {            Pen CurvePen = new Pen(Color.Purple, 2);            PointF[] CurvePointF = new PointF[points.Count];            float keys = 0;            float values = 0;            for (int i = 0; i < points.Count; i++)            {                keys = xSlice * i;                values = 10 * (points[i] / 10);                CurvePointF[i] = new PointF(keys, values);            }            graphics.DrawCurve(CurvePen, CurvePointF, this.tension);        }         private void DrawZ(Graphics graphics, List<float> points)        {            Pen CurvePen = new Pen(Color.OrangeRed, 2);            PointF[] CurvePointF = new PointF[points.Count];            float keys = 0;            float values = 0;            for (int i = 0; i < points.Count; i++)            {                keys = xSlice * i;                values = 10 * (points[i] / 10);                CurvePointF[i] = new PointF(keys, values);            }            graphics.DrawCurve(CurvePen, CurvePointF, this.tension);        }         /// <summary>        /// 曲线开关        /// </summary>        /// <param name="_xyz"></param>        /// <param name="show"></param>        public void HideCurve(string _xyz,bool show) {            switch (_xyz) {                 case "x":                    showX = show;                    break;                case "y":                    showY = show;                    break;                case "z":                    showZ = show;                    break;                default:                    break;            }        }         #endregion    }

UI上使用ThreadStart进行调用，根据需要设置休眠时间即可，同时设置pictureBox显示即可。

感谢各位的阅读，以上就是“C#怎么绘制实时曲线”的内容了，经过本文的学习后，相信大家对C#怎么绘制实时曲线这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是编程网，小编将为大家推送更多相关知识点的文章，欢迎关注！