上海有名的做网站的公司有哪些,常州的网站建设,商城在线,返利网站做淘宝一、实现功能
1、显示面板绘制。
2、拖动面板#xff0c;X轴、Y轴都可以拖动。
3、显示面板缩放#xff0c;放大或者缩小。
4、鼠标在面板中对应的XY轴数值。
5、自动生成的数据数组#xff0c;曲线显示。
6、鼠标是否在曲线上检测。
二、界面 拖动面板 鼠标在曲线上…一、实现功能
1、显示面板绘制。
2、拖动面板X轴、Y轴都可以拖动。
3、显示面板缩放放大或者缩小。
4、鼠标在面板中对应的XY轴数值。
5、自动生成的数据数组曲线显示。
6、鼠标是否在曲线上检测。
二、界面 拖动面板 鼠标在曲线上识别 三、部分功能代码实现
1、图形面板 /// summary/// 生成坐标系图片面板/// /summary/// returns/returnspublic Bitmap DrawImage(){ImageBoardInit();return bitMap;} /// summary/// 创建绘图面板-显示坐标系/// /summaryprivate void ImageBoardInit(){//1、绘制X、Y坐标轴if ((int)height ! 0 (int)width ! 0) //做这个判断是因为在最小化的情况下width0。{bitMap new Bitmap((int)width, (int)height); //根据给定的高度和宽度创建一个位图图像} graphics Graphics.FromImage(bitMap); //从指定的 objBitmap 对象创建 objGraphics 对象 (即在objBitmap对象中画图)//根据给定颜色(LightGray)填充图像的矩形区域 (背景)graphics.DrawRectangle(new Pen(boardColor, 1), 0, 0, width - 1, height - 1); //画边框graphics.FillRectangle(new SolidBrush(backColor), 1, 1, width - 2, height - 2); //填充边框//画X轴,注意图像的原始X轴和Y轴计算是以左上角为原点向右和向下计算的xAxisPoint1.X xSpace xSliceBegin;xAxisPoint1.Y (height / 2) ySliceBegin; //xAxisPoint2.X width;xAxisPoint2.Y xAxisPoint1.Y;graphics.DrawLine(new Pen(new SolidBrush(axisColor), 2), xAxisPoint1, xAxisPoint2);//画Y轴yAxisPoint1.X xSpace xSliceBegin;yAxisPoint1.Y height ;yAxisPoint2.X xSpace xSliceBegin;yAxisPoint2.Y 0 ;graphics.DrawLine(new Pen(new SolidBrush(axisColor), 2), yAxisPoint1, yAxisPoint2);//2、面板标题//graphics.DrawString(曲线编辑器, new Font(宋体, fontSize), new SolidBrush(Color.Blue), new PointF(width / 2, ySpace / 2));//3、画X轴上刻度、刻度说明 xSlice (width - xSpace ) / xSliceCount;ySlice (height / 2) / (ySliceCount / 2);int tempCountX1 (int)(- xSliceBegin / xSlice);int tempCountY1 (int)Math.Abs((ySliceBegin / ySlice));tempCountX tempCountX1 xSliceCount;tempCountY tempCountY1 ySliceCount/2;//画网格虚线Pen penDashed new Pen(new SolidBrush(Color.Black));penDashed.DashStyle DashStyle.Dash;for (int i 1; i tempCountX 1; i){//X轴刻度虚线graphics.DrawLine(penDashed, new PointF(i * xSlice xSpace xSliceBegin, 0 ), new PointF(i * xSlice xSpace xSliceBegin, height));//X轴刻度值标识文字string xStr (i * xSliceValue).ToString();int nStrLength xStr.Length;graphics.DrawString(xStr, new Font(宋体, fontSize), new SolidBrush(Color.Black), new PointF(i * xSlice xSpace - fontSize * nStrLength xSliceBegin, height / 2 fontSize ySliceBegin));}//Y轴虚线、刻度文字-正半轴for (int i 0; i tempCountY 1; i){graphics.DrawLine(penDashed, new PointF(xSpace xSliceBegin, height / 2 - i * ySlice ySliceBegin), new PointF(width, height / 2 - i * ySlice ySliceBegin));//Y轴刻度值标识文字string yStr (i * ySliceValue).ToString();int nStrLength yStr.Length;if(i0)graphics.DrawString(yStr, new Font(宋体, fontSize), new SolidBrush(Color.Black), new PointF(xSpace - fontSize * nStrLength xSliceBegin, height / 2 - i * ySlice ySliceBegin));}//Y轴虚线、刻度文字-负半轴for (int i 1; i tempCountY 1; i){graphics.DrawLine(penDashed, new PointF(xSpace xSliceBegin, height / 2 i * ySlice ySliceBegin), new PointF(width, height / 2 i * ySlice ySliceBegin));//Y轴刻度值标识文字string yStr (-i * ySliceValue).ToString();int nStrLength yStr.Length;graphics.DrawString(yStr, new Font(宋体, fontSize), new SolidBrush(Color.Black), new PointF(xSpace - fontSize * nStrLength xSliceBegin, height / 2 i * ySlice ySliceBegin));}//4、原点刻度说明graphics.DrawString(0, new Font(宋体, fontSize 2), new SolidBrush(Color.Black), new PointF(xSpace - fontSize * 2 xSliceBegin, height / 2 ySliceBegin));}
2、数据点曲线显示 /// summary/// 绘制XY轴曲线/// /summary/// param namexDatasX轴数据/param/// param nameyDatasY轴数据/param/// param namesplineColor曲线颜色/param/// param nametension曲线系数0.0f-1.0f,默认0.5f,0.0f是直线/param/// param nameisPointFill是否标出点/parampublic void DrawXY(float[] xDatas,float[] yDatas,Color splineColor,float tension,bool isPointFill){int xLength xDatas.Length;int yLength yDatas.Length;if(xLength!yLength){graphics.DrawString(X和Y数据长度不相等,new Font(宋体, fontSize 5), new SolidBrush(Color.Blue), new Point((int)xSpace, (int)(height / 2)));return;}PointF[] splinePoints new PointF[xDatas.Length];float xSlicePos 0, ySlicePos 0; //转换后的点在Image面板上像素点位置Brush brushPoint new SolidBrush(splineColor); //数据点画刷for(int i0;ixDatas.Length;i){xSlicePos xSliceBegin xSpace xDatas[i] * xSlice / xSliceValue;ySlicePos ySliceBegin height / 2 - yDatas[i] * ySlice / ySliceValue;splinePoints[i] new PointF(xSlicePos, ySlicePos);if (isPointFill){//graphics.FillEllipse(brushPoint, xSlicePos - 4, ySlicePos - 4, 8, 8); //原点graphics.FillRectangle(brushPoint, xSlicePos - 4, ySlicePos - 4, 8, 8); //矩形} }graphics.DrawCurve(new Pen(splineColor, 2.0f), splinePoints, tension);//graphics.Dispose();}
3、鼠标当前所在面板位置对应的坐标系统XY值 int ex 0, ey 0;int mouseToValueX 0;float mouseToValueY 0; //鼠标位置当前值float fMouseToValueX 0;private void pictureBox1_MouseMove(object sender, MouseEventArgs e){ex e.X;ey e.Y;//1、显示鼠标在坐标系内X、Y对应的值fMouseToValueX cureDraw.MousePosToValue_X(ex);mouseToValueX (int)Math.Round(cureDraw.MousePosToValue_X(ex));//mouseToValueY (float)Math.Round(cureDraw.MousePosToValue_Y(ey));mouseToValueY cureDraw.MousePosToValue_Y(ey);if (mouseToValueX0){mouseToValueX 0;}if (mouseToValueX 0 ex pictureBox1.Width - 60){ labMousePos.Text X: mouseToValueX.ToString() ; Y: mouseToValueY.ToString();labMousePos.Location new Point(ex 50, ey 40);}if (mouseToValueX 0 ex pictureBox1.Width - 60){ labMousePos.Text X: mouseToValueX.ToString() ; Y: mouseToValueY.ToString();labMousePos.Location new Point(ex - 50, ey 40);}} 4、鼠标是否在曲线上检测 bool isMouseOn false;private void timer1_Tick(object sender, EventArgs e){//bool isMouseOn cureDraw.IsMouseOnPointCheck(xDatas, yDatas, ex, ey);//bool isMouseOn cureDraw.IsMouseOnPointCheck(xDatasExpand, yDatasExpand, ex, ey);float tempX 0, tempY 0;int n 0;bool b1 false, b2 false;foreach (var xData in xDatasExpand){if(Math.Abs(xData-fMouseToValueX)0.02){tempX xData;}}for (int i 0; i xDatasExpand.Length;i ){if(xDatasExpand[i]tempX){n i;}}if (Math.Abs(yDatasExpand[n] - mouseToValueY)2.5){isMouseOn true;}else{isMouseOn false;}txtValue1.Text xDatasExpand[n].ToString(); //YtxtValue2.Text fMouseToValueX.ToString();txtValue3.Text yDatasExpand[n].ToString(); //XtxtValue4.Text mouseToValueY.ToString();txtValue5.Text n.ToString();if (isMouseOn){labMousePos.ForeColor Color.Red; }else{labMousePos.ForeColor Color.Black;}}
四、、工程下载链接
https://download.csdn.net/download/panjinliang066333/89775386
