C#绘制动态曲线

1、usingSystem;usingSystem.Collections;usingSystem.ComponentModel;usingSystem.Drawing;usingSystem.Data;usingSystem.Windows.Forms;namespacecurve/<summary>/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:/</summary>publicclassCurveControl:System.Windows.Forms.UserControlprivateSystem.Window

2、s.Forms.PictureBoxpicCurveShow;privateSystem.Windows.Forms.LabellabShowView;/<summary>/必需的设计器变量。/</summary>InitializeComponent();/TODO:在InitializeComponent调用后添加任何初始化/<summary>/清理所有正在使用的资源。/</summary>base.Dispose(disposing);#regiorffi件设计器生成的代码/<summary>/设计器支持所需的方法-不要使用代码

3、编辑器/修改此方法的内容。/</summary>privatevoidInitializeComponent()this.picCurveShow=newSystem.Windows.Forms.PictureBox();this.labShowView=newSystem.Windows.Forms.Label();this.SuspendLayout();/picCurveShow/this.picCurveShow.BackColor=System.Drawing.Color.Black;this.picCurveShow.Dock=System.Windows.Forms.

4、DockStyle.Fill;this.picCurveShow.Location=newSystem.Drawing.Point(0,0);this.picCurveShow.Name="picCurveShow"this.picCurveShow.Size=newSystem.Drawing.Size(384,264);this.picCurveShow.TabIndex=0;this.picCurveShow.TabStop=false;this.picCurveShow.Resize+=newSystem.EventHandler(this.picCurveShow

5、_Resize);this.picCurveShow.DoubleClick+=newSystem.EventHandler(this.picCurveShow_DoubleClick);this.picCurveShow.MouseMove+=newSystem.Windows.Forms.MouseEventHandler(this.picCurveShow_MouseMove);this.picCurveShow.MouseLeave+=newSystem.EventHandler(this.picCurveShow_MouseLeave);/labShowView/this.labSh

6、owView.AutoSize=true;this.labShowView.BackColor=System.Drawing.Color.Black;this.labShowView.ForeColor=System.Drawing.Color.Red;this.labShowView.Location=newSystem.Drawing.Point(192,96);this.labShowView.Name="labShowView"this.labShowView.Size=newSystem.Drawing.Size(42,17);this.labShowView.T

7、abIndex=1;this.labShowView.Text="label1"this.labShowView.TextAlign=System.Drawing.ContentAlignment.MiddleCenter;this.labShowView.Visible=false;/CurveControl/this.Controls.Add(this.labShowView);this.Controls.Add(this.picCurveShow);this.Name="CurveControl"this.Size=newSystem.Drawin

8、g.Size(384,264);this.Load+=newSystem.EventHandler(this.CurveControl_Load);this.ResumeLayout(false);#endregion#region曲线数据定义/<summary>/定义曲线窗体标题/</summary>privatestringtitle="方志洪曲线代码测试DEMO"/<summary>/定义曲线标题颜色/</summary>privateColortitleColor=Color.Yellow;/<summary&g

9、t;/</summary>privateboolshowTime=true;/<summary>/定义显示系统时间颜色/</summary>privateColorshowTimeColor=Color.Red;/<summary>/定义坐标零点向右偏移量/</summary>privatefloatcoordinate=50F;/<summary>/定义曲线Y轴最大值/</summary>privatefloatyMaxValue=100F;/<summary>/定义曲线Y轴最大值提示文字/<

10、;/summary>privatestringyMaxString="最大值：;/<summary>/定义曲线Y轴最小值/</summary>privatefloatyMinValue=0F;/<summary>/定义曲线Y轴最小值提示文字/</summary>privatestringyMinString="最小值：;/<summary>/定义曲线Y轴正常值（上限）/</summary>privatefloatyUpper=70F;/<summary>/定义曲线Y轴正常值（上限）提示

11、文本/</summary>privatestringyUpperString="上限：;/<summary>/定义曲线Y轴正常值（下限）/</summary>privatefloatyLower=20F;/<summary>/定义曲线Y轴正常值（下限）提示文本/</summary>privatestringyLowerString="下限：;/<summary>/定义曲线正常值上下限线段颜色/</summary>privateColoryUpperAndLowerColor=Color.Li

12、me;/<summary>/定义曲线正常值上下限线段宽度/</summary>privatefloatyUpperAndLowerPenWidth=1F;/<summary>/定义背景颜色/</summary>privateColorbackGroundColor=Color.Black;/<summary>/定义是否滚动网格线/</summary>privateboolremoveGrid=true;/<summary>/定义背景网格线颜色/</summary>privateColorgridCo

13、lor=Color.DarkGreen;/<summary>/定义背景网格文字颜色/</summary>privateColorgridForeColor=Color.Yellow;/<summary>/定义背景网格（分隔线）宽度/</summary>privatefloatgridCompart=1F;/<summary>/定义背景网格文字大小/</summary>privatefloatgridFontSize=9;/<summary>/定义背景网格线画笔宽度/</summary>private

14、floatgridPenWidth=1F;/<summary>/定义背景网格线单元格宽度/</summary>privatefloatgridWidth=10F;/<summary>/定义背景网格线单元格高度/</summary>privatefloatgridHeight=30F;/<summary>/定义曲线颜色/</summary>privateColorcurveColor=Color.White;/<summary>/定义曲线画笔宽度/</summary>privatefloatcurve

15、PenWidth=1;/<summary>/定义曲线移动距离/</summary>privateintcurveRemove=1;/<summary>/</summary>privatefloatrectangleWidth=1F;/<summary>/定义正方形颜色/</summary>privateColorrectangleColor=Color.White;/<summary>/定义显示节点数值鼠标X，Y轴容差精度/</summary>privatefloatxYPrecision=4F;/

16、<summary>/曲线节点数据最大存储量/</summary>privateintmaxNote=1000;#endregion#region公共属性/<summary>/定义曲线窗体标题/</summary>publicstringCarveTitlegetreturnthis.title;setthis.title=value;/<summary>/定义标题颜色/</summary>publicColorCarveTitleColorgetreturnthis.titleColor;setthis.titleColo

17、r=value;/<summary>/定义是否显示系统时间/</summary>publicboolCarveShowTimegetreturnthis.showTime;setthis.showTime=value;/<summary>/定义显示系统时间颜色/</summary>publicColorCarveShowTimeColorgetreturnthis.showTimeColor;setthis.showTimeColor=value;/<summary>/定义坐标零点向右偏移量/</summary>publi

18、cfloatCarveCoordinategetreturnthis.coordinate;setthis.coordinate=value;/<summary>/定义曲线Y轴最大值/</summary>publicfloatCarveYMaxValuegetreturnthis.yMaxValue;setthis.yMaxValue=value;/<summary>/定义曲线Y轴最大值提示文字/</summary>publicstringCarveYMaxStringgetreturnthis.yMaxString;setthis.yMaxSt

19、ring=value;/<summary>/定义曲线Y轴最小值/</summary>publicfloatCarveYMinValuegetreturnthis.yMinValue;setthis.yMinValue=value;/<summary>/定义曲线Y轴最小值提示文字/</summary>publicstringCarveYMinStringgetreturnthis.yMinString;setthis.yMinString=value;/<summary>/定义曲线Y轴正常值（上限）/</summary>pu

20、blicfloatCarveYUppergetreturnthis.yUpper;setthis.yUpper=value;/<summary>/定义曲线Y轴正常值（上限）提示文本/</summary>publicstringCarveYUpperStringgetreturnthis.yUpperString;setthis.yUpperString=value;/<summary>/定义曲线Y轴正常值（下限）/</summary>publicfloatCarveYLowergetreturnthis.yLower;setthis.yLower

21、=value;/<summary>/定义曲线Y轴正常值（下限）提示文本/</summary>publicstringCarveYLowerStringgetreturnthis.yLowerString;setthis.yLowerString=value;/<summary>/定义曲线正常值上下限线段颜色/</summary>publicColorCarveYUpperAndLowerColorgetreturnthis.yUpperAndLowerColor;setthis.yUpperAndLowerColor=value;/<sum

22、mary>/定义曲线正常值上下限线段宽度/</summary>publicfloatCarveYUpperAndLowerPenWidthgetreturnthis.yUpperAndLowerPenWidth;setthis.yUpperAndLowerPenWidth=value;/<summary>/定义背景颜色/</summary>publicColorCarveBackGroundColorgetreturnthis.backGroundColor;setthis.backGroundColor=value;/<summary>/

23、定义是否滚动网格线/</summary>publicboolCarveRemoveGridgetreturnthis.removeGrid;setthis.removeGrid=value;/<summary>/定义背景网格线颜色/</summary>publicColorCarveGridColorgetreturnthis.gridColor;setthis.gridColor=value;/<summary>/定义背景网格文字颜色/</summary>publicColorCarveGridForeColorgetreturnt

24、his.gridForeColor;setthis.gridForeColor=value;/<summary>/定义背景网格（分隔线）宽度/</summary>publicfloatCarveGridCompartgetreturnthis.gridCompart;setthis.gridCompart=value;/<summary>/定义背景网格文字大小/</summary>publicfloatCarveGridFontSizegetreturnthis.gridFontSize;setthis.gridFontSize=value;/&

25、lt;summary>/定义背景网格线画笔宽度/</summary>publicfloatCarveGridPenWidthgetreturnthis.gridPenWidth;setthis.gridPenWidth=value;/<summary>/定义背景网格线单元格宽度/</summary>publicfloatCarveGridWidthgetreturnthis.gridWidth;setthis.gridWidth=value;/<summary>/定义背景网格线单元格高度/</summary>publicfloa

26、tCarveGridHeightgetreturnthis.gridHeight;setthis.gridHeight=value;/<summary>/定义曲线颜色/</summary>publicColorCarveCurveColorgetreturnthis.curveColor;setthis.curveColor=value;/<summary>/定义曲线画笔宽度/</summary>publicfloatCarveCurvePenWidthgetreturnthis.curvePenWidth;setthis.curvePenWid

27、th=value;/<summary>/定义曲线移动距离/</summary>publicintCarveCurveRemovegetreturnthis.curveRemove;setthis.curveRemove=value;/<summary>/定义数值节点正方形宽度/</summary>publicfloatCarveRectangleWidthgetreturnthis.rectangleWidth;setthis.rectangleWidth=value;/<summary>/定义正方形颜色/</summary&g

28、t;publicColorCarveRectangleColorgetreturnthis.rectangleColor;setthis.rectangleColor=value;/<summary>/定义显示节点数值鼠标X，Y轴容差精度/</summary>publicfloatCarveXYPrecisiongetreturnthis.xYPrecision;setthis.xYPrecision=value;/<summary>/曲线节点数据最大存储量/</summary>publicintCarveMaxNotegetreturnthis

29、.maxNote;setthis.maxNote=value;#endregion#region全局变量/<summary>/背景方格移动量/</summary>privatefloatgridRemoveX=1;/<summary>/鼠标X，Y坐标值，及该点坐标记录值、记录时间（数组）/</summary>privateCoordinatesValuenoteMessages;/<summary>/当前鼠标X，Y坐标记录数组下标值/</summary>privateintnoteNow=0;/<summary>

30、;/系统上次读取的值/</summary>privatefloatlastTimeValue=0F;/<summary>/系统窗体高度临时值，用于窗体变形时刷新数组坐标。/</summary>privateintlastTimeSystemWindowHeight=0;/<summary>/系统窗体宽度临时值，用于窗体变形时刷新数组坐标。/</summary>privateintlastTimeSystemWindowWidth=0;#endregion#region曲线数据显示#region绘制背景网格/<summary>

31、;/刷新背景网格线，并返回背景图片（背景不判断是否滚动）/</summary>/<returns>返回背景图片</returns>privateSystem.Drawing.BitmapRefBackground()if(this.picCurveShow.Height<1|this.picCurveShow.Width<1)returnnull;/创建网格背景线画笔System.Drawing.PengridPen=newPen(this.gridColor,this.gridPenWidth);/创建网格文字画笔System.Drawing.

32、PengridCompartPen=newPen(this.gridForeColor,this.gridCompart);System.Drawing.Bitmapbitmap=newBitmap(this.picCurveShow.Width,this.picCurveShow.Height);System.Drawing.GraphicsbackGroundImage=System.Drawing.Graphics.FromImage(bitmap);/坐标原点偏移backGroundImage.TranslateTransform(this.coordinate,0);/填充背景色ba

33、ckGroundImage.Clear(this.backGroundColor);/绘制表格背景线/绘制背景横轴线for(floati=this.picCurveShow.Height;i>=0;i=i-this.gridHeight)System.Drawing.PointFpointFBegin=newPointF(0F,i);System.Drawing.PointFpointFEnd=newPointF(this.picCurveShow.Width,i);backGroundImage.DrawLine(gridPen,pointFBegin,pointFEnd);/绘制背景

34、纵轴线for(floati=this.picCurveShow.Width;i>=0;i=i-this.gridWidth)System.Drawing.PointFpointFBegin;System.Drawing.PointFpointFEnd;if(i-gridRemoveX>=0)pointFBegin=newPointF(i-gridRemoveX,0F);pointFEnd=newPointF(i-gridRemoveX,this.picCurveShow.Height);backGroundImage.DrawLine(gridPen,pointFBegin,poi

35、ntFEnd);绘制分隔线。backGroundImage.DrawLine(gridCompartPen,0,0,0,this.picCurveShow.Height);/绘制正常值上限，下限/绘制分隔线刻度文字System.Drawing.FontbackGroundFont=newFont("Arial",this.gridFontSize);floatfontHight=backGroundFont.GetHeight();System.Drawing.SolidBrushbrush=newSolidBrush(this.gridForeColor);/判断上下线值

36、是否有效(非零)System.Drawing.PenupperAndLowerPen=newPen(this.yUpperAndLowerColor,this.yUpperAndLowerPenWidth);upperAndLowerPen.DashStyle=System.Drawing.Drawing2D.DashStyle.Dash;if(this.yLower>0)floatyHeight=(float)this.picCurveShow.Height-(this.yLower/(this.yMaxValue-this.yMinValue)*(float)this.picCurv

37、eShow.Height;backGroundImage.DrawLine(upperAndLowerPen,0,yHeight,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)floatyHeight=(float)this.picCurveShow.Height-(this.yUpper/(this.yMaxVal

38、ue-this.yMinValue)*(float)this.picCurveShow.Height;backGroundImage.DrawLine(upperAndLowerPen,0,yHeight,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,ba

39、ckGroundFont,brush,-this.coordinate,0);/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=newSolidBrush(this.titleColor);backGroundImage.DrawString(this.title,backGroundFont,brush,(this.picCurveShow.Width

40、/2-this.title.Length*this.gridFontSize),0);/绘制系统时间if(this.showTime)brush=newSolidBrush(this.showTimeColor);backGroundImage.DrawString(System.DateTime.Now.ToString("T"),backGroundFont,brush,(this.picCurveShow.Width-105),this.picCurveShow.Height-fontHight);returnbitmap;/<summary>/刷新背景网

41、格线，并返回背景图片(背景判断是否滚动)/</summary>/<returns>返回背景图片</returns>privateSystem.Drawing.BitmapRefAndRemoveBackground()/J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;returnthis.RefBackground();#endreg

42、ion/<summary>/刷新背景网格线，显示曲线/</summary>publicvoidShowCurve()窗体高度发生变化，先刷新数组Y坐标值if(this.picCurveShow.Height!=this.lastTimeSystemWindowHeight)|(this.picCurveShow.Width!=this.lastTimeSystemWindowWidth)this.RefurbishArray();System.Drawing.Bitmapbitmap=this.RefAndRemoveBackground();System.Drawin

43、g.Graphicsgraphics=System.Drawing.Graphics.FromImage(bitmap);/绘制曲线/判断数组中是否有两个以上的数值/绘制直线if(this.noteNow>1)/声明绘制曲线的Point数组System.Drawing.PointpointsTemp=newPointthis.noteNow;System.Drawing.Pointpoints;/数组下标；intpointI=0;for(inti=0;i<=this.noteNow-1;i+)if(this.noteMessagesi.X>=this.coordinate)p

44、ointsTemppointI.X=this.noteMessagesi.X;pointsTemppointI.Y=this.noteMessagesi.Y;pointI+;points=newPointpointI;Array.Copy(pointsTemp,0,points,0,pointI);graphics.DrawLines(newPen(this.curveColor,this.curvePenWidth),points);修制曲线/if(this.noteNow>=2)/graphics.DrawCurve(newPen(this.curveColor,this.curve

45、PenWidth),points);/this.picCurveShow.Image=bitmap;/<summary>/刷新背景网格线，显示曲线，自动添加即时数值/</summary>/<paramname="Value">即时数值</param>publicvoidShowCurve(floatValue)this.AddNewValue(Value);this.ShowCurve();#endregion#region自动将最新采样数值添加到数组/<summary>/自动将最新采样数值添加到数组/</s

46、ummary>/<paramname="newValue">最新采样数值</param>privatevoidAddNewValue(floatnewValue)/先判断数组下标if(this.noteNow>=this.maxNote-1)/数组已经存满数值for(inti=0;i<this.noteNow;i+)this.noteMessagesi=this.noteMessagesi+1;this.noteMessagesi.X=this.noteMessagesi.X-curveRemove;this.noteMessage

47、sthis.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-this.yMinValue)*this.picCurveShow.Height);else/微组未存满数值for(inti=0;i<t

48、his.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.picCurveShow.Width;System.Randomr=newRandom();this.noteMessagesthis.noteNow.Y=(int)(this.picCu

49、rveShow.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/<summary>/窗体大小变化，自动刷新窗体Y轴值/</summary>privatevoidRefurbishArray()if(this.noteNow<=0)return;for(inti=0;i<=this.noteNow;i+)this.noteMessagesi.X=this.noteM

50、essagesi.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修改窗体高度临时值this.lastTimeSystemWindowHeight=this.picCurveShow.Height;this.lastTimeSystemWi

51、ndowWidth=this.picCurveShow.Width;#endregion#region显示鼠标当前点坐标值/<summary>/显示鼠标当前点坐标值/</summary>/<paramname="X">鼠标X坐标</param>/<paramname="Y">鼠标Y坐标</param>privatevoidShowMouseCoordinateMessage(intX,intY)floatx=(int)X;floaty=(int)Y;/鼠标位置在偏移量右侧时发生if(x>=this.coordinate)foreach(CoordinatesValuevalueTempinthis.no