C#绘制动态曲线

1、using System;using System.Collections;using System.ComponentModel;using System.Drawing;using System.Data;using System.Windows.Forms;namespace curve/ / 实时动态曲线图/ 代码编写：方志洪/ 编写时间：2007年2月7日/ E-Mail ：/ BLOG：http:/ public class CurveControl :System.Windows.Forms.UserControlprivate System.Windows.Forms.Pict

2、ureBox picCurveShow;private System.Windows.Forms.Label labShowView;/ 26 / 28/ 必需的设计器变量/ InitializeComponent();/ TODO:在 InitializeComponent 调用后添加任何初始化 / / 清理所有正在使用的资源。/ base.Dispose( disposi ng );#regior组件设计器生成的代码/ / 设计器支持所需的方法 -不要使用代码编辑器/ 修改此方法的内容。/ private void InitializeComponent()this.picCurveSho

3、w = new System.Windows.Forms.PictureBox();this.labShowView = new System.Windows.Forms.Label();this.SuspendLayout();/ picCurveShow/this.picCurveShow.BackColor =System.Drawing.Color.Black;this.picCurveShow.Dock =System.Windows.Forms.DockStyle.Fill;this.picCurveShow.Location = newSystem.Drawing.Point(0

4、, 0);this.picCurveShow.Name = picCurveShow;this.picCurveShow.Size = new System.Drawing.Size(384,264);this.picCurveShow.TabIndex = 0;this.picCurveShow.TabStop = false;this.picCurveShow.Resize += newSystem.EventHandler(this.picCurveShow_Resize);this.picCurveShow.DoubleClick += newSystem.EventHandler(t

5、his.picCurveShow_DoubleClick);this.picCurveShow.MouseMove += newSystem.Windows.Forms.MouseEventHandler(this.picCurveShow_MouseMove);this.picCurveShow.MouseLeave += newSystem.EventHandler(this.picCurveShow_MouseLeave);/ labShowView/this.labShowView.AutoSize = true;this.labShowView.BackColor = System.

6、Drawing.Color.Black;this.labShowView.ForeColor = System.Drawing.Color.Red;this.labShowView.Location = new System.Drawing.Point(192,96);this.labShowView.Name = labShowView;this.labShowView.Size = new System.Drawing.Size(42, 17);this.labShowView.TabIndex = 1;this.labShowView.Text = label1;this.labShow

7、View.TextAlign = System.Drawing.ContentAlignment.Middl eCenter;this.labShowView.Visible = false;/ CurveControl/this.Controls.Add(this.labShowView); this.Controls.Add(this.picCurveShow);this.Name = CurveControl;this.Size = new System.Drawing.Size(384, 264);this.Load += newSystem.EventHandler(this.Cur

8、veControl_Load);this.ResumeLayout(false);#endregion #region 曲线数据定义/ / 定义曲线窗体标题/ private string title = 方志洪曲线代码测试 DEMO;/ / 定义曲线标题颜色/ private Color titleColor = Color.Yellow;/ / 定义是否显示系统时间/ private bool showTime = true;/ / 定义显示系统时间颜色/ private Color showTimeColor = Color.Red;/ / 定义坐标零点向右偏移量/ private fl

9、oat coordinate = 50F;/ / 定义曲线 Y 轴最大值/ private float yMaxValue = 100F;/ / 定义曲线 Y 轴最大值提示文字/ private string yMaxString = 最大值：5/ / 定义曲线 Y 轴最小值/ private float yMinValue = 0F;/ / 定义曲线 Y 轴最小值提示文字/ private string yMinString = 最小值：5/ / 定义曲线 Y 轴正常值（上限）/ private float yUpper = 70F;/ / 定义曲线 Y 轴正常值（上限）提示文本/ priv

10、ate string yUpperString = 上限：5/ / 定义曲线 Y 轴正常值（下限）/ private float yLower = 20F;/ / 定义曲线 Y 轴正常值（下限）提示文本/ private string yLowerString = 下限：5/ / 定义曲线正常值上下限线段颜色/ private Color yUpperAndLowerColor = Color.Lime;/ / 定义曲线正常值上下限线段宽度/ private float yUpperAndLowerPenWidth = 1F;/ / 定义背景颜色/ private Color backGrou

11、ndColor = Color.Black;/ / 定义是否滚动网格线/ private bool removeGrid = true;/ / 定义背景网格线颜色/ private Color gridColor = Color.DarkGreen;/ / 定义背景网格文字颜色/ private Color gridForeColor = Color.Yellow;/ / 定义背景网格（分隔线）宽度/ private float gridCompart = 1F;/ / 定义背景网格文字大小/ private float gridFontSize = 9;/ / 定义背景网格线画笔宽度/ pr

12、ivate float gridPenWidth = 1F;/ / 定义背景网格线单元格宽度/ private float gridWidth = 10F;/ / 定义背景网格线单元格高度/ private float gridHeight = 30F;/ / 定义曲线颜色/ private Color curveColor = Color.White;/ / 定义曲线画笔宽度/ private float curvePenWidth = 1;/ / 定义曲线移动距离/ private int curveRemove = 1;/ / 定义数值节点正方形宽度/ private float rec

13、tangleWidth = 1F;/ / 定义正方形颜色/ private Color rectangleColor = Color.White;/ / 定义显示节点数值鼠标 X，Y 轴容差精度/ private float xYPrecision = 4F;/ / 曲线节点数据最大存储量/ private int maxNote = 1000;#endregion#region 公共属性/ / 定义曲线窗体标题/ public string CarveTitlegetreturn this.title;setthis.title = value;/ / 定义标题颜色/ public Colo

14、r CarveTitleColorgetreturn this.titleColor;setthis.titleColor = value;/ / 定义是否显示系统时间/ public bool CarveShowTimegetreturn this.showTime;setthis.showTime = value;/ / 定义显示系统时间颜色/ public Color CarveShowTimeColorgetreturn this.showTimeColor;setthis.showTimeColor = value;/ / 定义坐标零点向右偏移量/ public float Carv

15、eCoordinategetreturn this.coordinate;setthis.coordinate = value;/ / 定义曲线 Y 轴最大值/ public float CarveYMaxValuegetreturn this.yMaxValue;setthis.yMaxValue = value;/ / 定义曲线 Y 轴最大值提示文字/ public string CarveYMaxStringgetreturn this.yMaxString;setthis.yMaxString = value;/ / 定义曲线 Y 轴最小值/ public float CarveYMi

16、nValuegetreturn this.yMinValue;setthis.yMinValue = value;/ / 定义曲线 Y 轴最小值提示文字/ public string CarveYMinStringgetreturn this.yMinString;setthis.yMinString = value;/ / 定义曲线 Y 轴正常值（上限）/ public float CarveYUppergetreturn this.yUpper;setthis.yUpper = value;/ / 定义曲线 Y 轴正常值（上限）提示文本/ public string CarveYUpper

17、Stringgetreturn this.yUpperString;setthis.yUpperString = value;/ / 定义曲线 Y 轴正常值（下限）/ public float CarveYLowergetreturn this.yLower;setthis.yLower = value;/ / 定义曲线 Y 轴正常值（下限）提示文本/ public string CarveYLowerStringgetreturn this.yLowerString;setthis.yLowerString = value;/ / 定义曲线正常值上下限线段颜色/ public Color C

18、arveYUpperAndLowerColorgetreturn this.yUpperAndLowerColor;setthis.yUpperAndLowerColor = value;/ / 定义曲线正常值上下限线段宽度/ public float CarveYUpperAndLowerPenWidthgetreturn this.yUpperAndLowerPenWidth;setthis.yUpperAndLowerPenWidth = value;/ / 定义背景颜色/ public Color CarveBackGroundColorgetreturn this.backGroun

19、dColor;setthis.backGroundColor = value;/ / 定义是否滚动网格线/ public bool CarveRemoveGridgetreturn this.removeGrid;setthis.removeGrid = value;/ / 定义背景网格线颜色/ public Color CarveGridColorgetreturn this.gridColor;setthis.gridColor = value;/ / 定义背景网格文字颜色/ public Color CarveGridForeColorgetreturn this.gridForeCol

20、or;setthis.gridForeColor = value;/ / 定义背景网格（分隔线）宽度/ public float CarveGridCompartgetreturn this.gridCompart;setthis.gridCompart = value;/ / 定义背景网格文字大小/ public float CarveGridFontSizegetreturn this.gridFontSize;setthis.gridFontSize = value;/ / 定义背景网格线画笔宽度/ public float CarveGridPenWidthgetreturn this

21、.gridPenWidth;setthis.gridPenWidth = value;/ / 定义背景网格线单元格宽度/ public float CarveGridWidthgetreturn this.gridWidth;setthis.gridWidth = value;/ / 定义背景网格线单元格高度/ public float CarveGridHeightgetreturn this.gridHeight;setthis.gridHeight = value;/ / 定义曲线颜色/ public Color CarveCurveColorgetreturn this.curveCo

22、lor;setthis.curveColor = value;/ / 定义曲线画笔宽度/ public float CarveCurvePenWidthgetreturn this.curvePenWidth;setthis.curvePenWidth = value;/ / 定义曲线移动距离/ public int CarveCurveRemovegetreturn this.curveRemove;setthis.curveRemove = value;/ / 定义数值节点正方形宽度/ public float CarveRectangleWidthgetreturn this.recta

23、ngleWidth;setthis.rectangleWidth = value;/ / 定义正方形颜色/ public Color CarveRectangleColorgetreturn this.rectangleColor;setthis.rectangleColor = value;/ / 定义显示节点数值鼠标 X，Y 轴容差精度/ public float CarveXYPrecisiongetreturn this.xYPrecision;setthis.xYPrecision = value;/ / 曲线节点数据最大存储量/ public int CarveMaxNoteget

24、return this.maxNote;setthis.maxNote = value;#endregion#region 全局变量/ / 背景方格移动量/ private float gridRemoveX = 1;/ / 鼠标 X，Y 坐标值，及该点坐标记录值、记录时间（数组）/ private CoordinatesValue noteMessages;/ / 当前鼠标 X，Y 坐标记录数组下标值/ private int noteNow = 0;/ / 系统上次读取的值/ private float lastTimeValue =0F;/ / 系统窗体高度临时值，用于窗体变形时刷新数组

25、坐标。/ private int lastTimeSystemWindowHeight = 0;/ / 系统窗体宽度临时值，用于窗体变形时刷新数组坐标。/ private int lastTimeSystemWindowWidth = 0; #endregion#region 曲线数据显示#region 绘制背景网格/ / 刷新背景网格线，并返回背景图片（背景不判断是否滚动） / / 返回背景图片 private System.Drawing.Bitmap RefBackground()if(this.picCurveShow.Height1 | this.picCurveShow.Width

26、 =0;i=i-this.gridHeight)System.Drawing.PointF pointFBegin = new PointF(0F,i);System.Drawing.PointF pointFEnd = new PointF(this.picCurveShow.Width,i);backGroundImage.DrawLine(gridPen,pointFBegin,pointFEnd);/ 绘制背景纵轴线for(float i = this.picCurveShow.Width; i=0; i=i-this.gridWidth)System.Drawing.PointF p

27、ointFBegin ;System.Drawing.PointF pointFEnd ;if(i-gridRemoveX =0)pointFBegin = new PointF(i-gridRemoveX ,0F); pointFEnd = new PointF(i-gridRemoveX ,this.picCurveShow.Height);backGroundImage.DrawLine(gridPen,pointF Begi n,poi ntFE nd);/ 绘制分隔线。backGroundImage.DrawLine(gridCompartPen,0,0,0,this.picCurv

28、eShow.Height);/ 绘制正常值上限，下限/ 绘制分隔线刻度文字System.Drawing.Font backGroundFont = new Font(Arial,this.gridFontSize);float fontHight = backGroundFont.GetHeight();System.Drawing.SolidBrush brush = new SolidBrush(this.gridForeColor);/ 判断上下线值是否有效(非零)System.Drawing.Pen upperAndLowerPen = new Pen(this.yUpperAndLo

29、werColor,this.yUpperAndLowerPenWidth);upperAndLowerPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;if(this.yLower 0)float yHeight = (float)this.picCurveShow.Height - (this.yLower /(this.yMaxValue - this.yMinValue) * (float)this.picCurveShow.Height;backGroundImage.DrawLine(upperAndLowerPen,0,

30、y Height,this.picCurveShow.Width,yHeight);/ 绘制下限文字backGroundImage.DrawString(this.yLowerString,backGroundFont,brush,-this.coordinate,yHeight - fontHight/2);if(this.yUpper 0)float yHeight = (float)this.picCurveShow.Height - (this.yUpper /(this.yMaxValue - this.yMinValue) * (float)this.picCurveShow.He

31、ight;backGroundImage.DrawLine(upperAndLowerPen,0,y Height,this.picCurveShow.Width,yHeight);/ 绘制下限文字backGroundImage.DrawString(this.yUpperString,backGroundFont,brush,- this.coordinate,yHeight - fontHight/2);/ 绘制最大值文字backGroundImage.DrawString(this.yMaxString,backGroundFont,brush,- this.coordinate,0);

32、/ 绘制最小值文字backGroundImage.DrawString(this.yMinString,backGroundFont,brush,- this.coordinate,(float)this.picCurveShow.Height - fontHight);/ 绘制曲线窗体标题brush = new SolidBrush(this.titleColor);backGroundImage.DrawString(this.title,backGroundFont,brush,(this.picCurveShow.Width / 2 - this.title.Length * this

33、.gridFontSize),0);/ 绘制系统时间if(this.showTime)brush = new SolidBrush(this.showTimeColor);backGroundImage.DrawString(System.DateTime.Now.ToString(T),backGroundFont,brush,(this.picCurveShow.Width - 105),this.picCurveShow.Height - fontHight);return bitmap;/ / 刷新背景网格线，并返回背景图片(背景判断是否滚动)/ / 返回背景图片 private Sy

34、stem.Drawi ng.Bitmap RefA ndRemoveBackgro un d()/判断是否需要 移动纵轴线if(this.removeGrid)if(this.gridRemoveX = this.gridWidth)this.gridRemoveX = 1;elsethis.gridRemoveX = this.gridRemoveX + curveRemove;return this.RefBackground();#endregion/ / 刷新背景网格线，显示曲线/ public void ShowCurve()/窗体高度发生变化，先刷新数组 Y坐标值if(this.p

35、icCurveShow.Height != this.lastTimeSystemWindowHeight)|(this.picCurveShow.Width != this.lastTimeSystemWindowWidth)this.RefurbishArray();System.Drawing.Bitmap bitmap = this.RefAndRemoveBackground();System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(bitmap);/ 绘制曲线/ 判断数组中是否有两个以上的数值/ 绘

36、制直线if(this.noteNow 1)/声明绘制曲线的 Point数组System.Drawing.Point pointsTemp = new Pointthis.noteNow;System.Drawing.Point points;/ 数组下标；int pointI = 0;for(int i=0;i=this.coordinate)pointsTemppointI.X = this.noteMessagesi.X; pointsTemppointI.Y = this.noteMessagesi.Y;pointI +;points = new PointpointI;Array.Co

37、py(pointsTemp,0,points,0,pointI);graphics.DrawL in es( new Pen (this.curveColor,this.curvePe nWidth),poi nts);/绘 制曲线/ if(this.noteNow =2)/ / graphics.DrawCurve(new Pen(this.curveColor,this.curvePenWidth),points);/ this.picCurveShow.Image = bitmap;/ / 刷新背景网格线，显示曲线，自动添加即时数值/ / 即时数值 public void ShowCur

38、ve(float Value)this.AddNewValue(Value);this.ShowCurve();#endregion#region 自动将最新采样数值添加到数组/ / 自动将最新采样数值添加到数组/ / 最新采样数值 private void AddNewValue(float newValue)/ 先判断数组下标if(this.noteNow = this.maxNote -1)/ 数组已经存满数值for(int i = 0;i this.noteNow;i+)this.noteMessagesi = this.noteMessagesi+1; this.noteMessag

39、esi.X = this.noteMessagesi.X - curveRemove; this.noteMessagesthis.noteNow.Value = newValue;this.noteMessagesthis.noteNow.time = System.DateTime.Now; this.noteMessagesthis.noteNow.X =this.picCurveShow.Width;this.noteMessagesthis.noteNow.Y = (int)(this.picCurveShow.Height - (newValue /(this.yMaxValue

40、- this.yMinValue) *this.picCurveShow.Height);else/数组未存满数值for(int i = 0;i this.noteNow;i+)this.noteMessagesi.X = this.noteMessagesi.X - curveRemove;this.noteMessagesthis.noteNow.Value = newValue; this.noteMessagesthis.noteNow.time =System.DateTime.Now;this.noteMessagesthis.noteNow.X =this.picCurveSho

41、w.Width;System.Random r= new Random();this.noteMessagesthis.noteNow.Y = (int)(this.picCurveShow.Height -(newValue /(this.yMaxValue - this.yMinValue) * this.picCurveShow.Height); this.noteNow +;#endregion#region 窗体大小变化，自动刷新窗体 Y 轴值/ / 窗体大小变化，自动刷新窗体 Y 轴值/ private void RefurbishArray()if(this.noteNow =

42、0)return;for(int i= 0;i = this.noteNow;i+)this.noteMessagesi.X = this.noteMessagesi.X +(this.picCurveShow.Width - this.lastTimeSystemWindowWidth);this.noteMessagesi.Y = (int)(this.picCurveShow.Height -(this.noteMessagesi.Value /(this.yMaxValue - this.yMinValue) * this.picCurveShow.Height);/改变窗体大小时自动

43、修改窗体高度临时值this.lastTimeSystemWindowHeight = this.picCurveShow.Height;this.lastTimeSystemWindowWidth = this.picCurveShow.Width;#endregion#region 显示鼠标当前点坐标值/ / 显示鼠标当前点坐标值/ / vparam name=X 鼠标 X 坐标 / vparam name=Y 鼠标 Y坐标 private void ShowMouseCoordinateMessage(int X,int Y)float x = (int)X;float y = (int)Y;/ 鼠标位置在偏移量右侧时发生if(x = this.coordinate)foreach(CoordinatesValue valueTemp in this.noteMessages)if(valueTemp.X = (x- this.xYPrecision)&(valueTemp.Y = (y - this.xYPrecision)&(valueTemp.Y = (y + th