using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.IO.Ports;
namespace RealTimeCurve
{
public partial class RealTimeCurve : Form
{
private clsDrawThread myDrawThread = null;
private Thread thdDraw = null;
System.IO.Ports.SerialPort ComPort = new SerialPort();
public RealTimeCurve()
{
InitializeComponent();
}
private void RealTimeCurve_Load(object sender, EventArgs e)
{
Rectangle rt1 = new Rectangle(50, 0, 640, 250);
// Create thread class
// myDrawThread = new clsDrawThread(this, new DrawHandler(RefreshPictureBox), this.ClientSize.Width, this.ClientSize.Height);
myDrawThread = new clsDrawThread(this, new DrawHandler(RefreshPicture), rt1.Width, rt1.Height);
// Start sub thread to draw
thdDraw = new Thread(new ThreadStart(myDrawThread.DrawGraph));
thdDraw.Start();
}
public void Draw(double xAxis,double yAxis,double temperature,double heartRate)
{
myDrawThread.X = xAxis;
myDrawThread.Y = yAxis;
myDrawThread.Tempetature = temperature;
myDrawThread.HeartRate = heartRate;
Rectangle rt1 = new Rectangle(50, 0, 640, 250);
Graphics g = CreateGraphics();
g.DrawImage(myDrawThread.DrawImage, rt1, rt1, GraphicsUnit.Pixel);
}
private void RealTimeCurve_Closing(object sender, CancelEventArgs e)
{
// Close thread
myDrawThread.IsStop = true;
thdDraw.Join(1);
}
private void RefreshPicture()
{
Rectangle rt1 = new Rectangle(52, 0, 640, 250);
// Refresh picture
this.Invalidate(rt1);
}
public void DrawCoordinates()
{
Font font = new Font("Verdana", 7, FontStyle.Regular);
SolidBrush blackbrush = new SolidBrush(Color.Black);
SolidBrush bluebrush = new SolidBrush(Color.Blue);
SolidBrush yellowbrush = new SolidBrush(Color.Yellow);
SolidBrush redbrush = new SolidBrush(Color.Red);
Pen blackPen = new Pen(Color.Black, 2);
Pen bluePen = new Pen(Color.Blue, 2);
Pen redPen = new Pen(Color.Red, 2);
Pen yellowPen = new Pen(Color.Yellow, 2);
Graphics g = this.CreateGraphics();
//绘制一条水平直线和一条垂直直线
g.DrawLine(blackPen, 50, 250, 50, 0);
g.DrawLine(blackPen, 50, 250, 640, 250);
//绘制X轴
for (int i = 0; i < 10; i++)
{
g.DrawString(i.ToString(), font, blackbrush, 50 + i * 60, 270);
}
//绘制垂直的字符串
for (int i = 0; i < 9; i++)
{
g.DrawString("|", font, blackbrush, 110 + i * 60, 250);
}
//绘制Y轴
g.DrawString("3000", font, blackbrush, 0, 0);
for (int i = 8; i >= 0; i--)
{
g.DrawString(2200 + i * 100 + "-", font, blackbrush, 0, (8 - i) * 30);
}
g.DrawLine(blackPen, 235, 315, 265, 315);
g.DrawString("心率", font, blackbrush, 265, 305);
g.DrawLine(bluePen, 315, 315, 345, 315);
g.DrawString("体温", font, bluebrush, 345, 305);
g.DrawLine(yellowPen, 395, 315, 425, 315);
g.DrawString("X轴", font, yellowbrush, 425, 305);
g.DrawLine(redPen, 475, 315, 505, 315);
g.DrawString("Y轴", font, redbrush, 505, 305);
//释放对象
g.Dispose();
blackbrush.Dispose();
bluebrush.Dispose();
yellowbrush.Dispose();
redbrush.Dispose();
blackPen.Dispose();
bluePen.Dispose();
redPen.Dispose();
yellowPen.Dispose();
}
private void ComOpen()
{
if (ComPort.IsOpen)
{
ComPort.Close();
GraphTimer.Enabled = false;
if (CTrlThread != null)
CTrlThread.Abort();
menuItem1.Text = "打开串口";
}
else
{
//设置串口参数
ComPort.BaudRate = int.Parse("115200");
ComPort.DataBits = int.Parse("8");
ComPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), "1", true);
//ComPort.Parity = (Parity)Enum.Parse(typeof(Parity), "0");
ComPort.PortName = "COM3";
// 打开串口
ComPort.Open();
menuItem1.Text = "关闭串口";
}
}
private void menuItem1_Click(object sender, EventArgs e)
{
try
{
this.ComOpen();
}
catch
{
if (CTrlThread != null)
CTrlThread.Abort();
}
}
private byte[] HexStringToByteArray(string s)
{
s = s.Replace(" ", "");
byte[] buffer = new byte[s.Length / 2];
for (int i = 0; i < s.Length; i += 2)
buffer[i / 2] = (byte)Convert.ToByte(s.Substring(i, 2), 16);
return buffer;
}
//发送数据
private void SendData()
{
if (!ComPort.IsOpen)
return;
//
//string temp = textBox1.Text;
string temp = "";
if (radioButton1.Checked)
temp = "7E 42 09 00 00 00 00 00 FF FF 08 7D 5D 7D 5E 00 01 00 7D 5E 00 7D 5E 00 02 BA 14 7E";
else if (radioButton2.Checked)
temp = "7E 42 09 00 00 00 00 00 FF FF 08 7D 5D 7D 5E 00 02 00 7D 5E 00 7D 5E 00 02 38 CC 7E";
// string temp = "7E 42 09 00 00 00 00 00 FF FF 08 7D 5D 7D 5E 00 01 00 7D 5E 00 7D 5E 00 02 BA 14 7E";
//
Byte[] tempByte = this.HexStringToByteArray(temp);
//
ComPort.Write(tempByte, 0, tempByte.Length);
}
private void menuItem2_Click(object sender, EventArgs e)
{
this.BeginTime();
}
private void BeginTime()
{
//
if (!ComPort.IsOpen)
{
MessageBox.Show("串口未打开");
//
return;
}
//
if (!GraphTimer.Enabled)
{
//
//tickStart = Environment.TickCount;
//
GraphTimer.Enabled = true;
}
}
// 声明了一个线程：
private Thread CTrlThread;
// 声明一个委托：
public delegate void DelegateCTrlThr();
// 声明了一个方法：
private void CTrlThr()
{
if (this.InvokeRequired)
{
DelegateCTrlThr m = new DelegateCTrlThr(CTrlThr);
this.Invoke(m);
return;
}
// 获取字节长度
int bytes = ComPort.BytesToRead;
// 创建字节数组
byte[] buffer = new byte[bytes];
// 读取缓冲区的数据到数组
ComPort.Read(buffer, 0, bytes);
//
//listBox1.Items.Clear();
//如果不是36位
if (bytes == 36)
{
//
string temp = "";
//
int index = 26;
//
int flag = 0;
//
double[] showLine = new double[4];
//
while (flag < 4)
{
//
byte[] showContent = new byte[2];
//
showContent[0] = buffer[index];
//
index++;
//
showContent[1] = buffer[index];
//
index++;
//
Array.Reverse(showContent);
UInt16 Ret = System.BitConverter.ToUInt16(showContent, 0);
//float Ret = BitConverter.(showContent, 0);
showLine[flag] = Convert.ToDouble(Ret);
//
if (temp != "")
{
temp += ", ";
}
temp += Ret.ToString();
//
//
flag++;
}
Draw(showLine[0], showLine[1], showLine[2], showLine[3]);
//
textBox1.Text = temp;
}
}
private void GraphTimer_Tick(object sender, EventArgs e)
{
CTrlThread = new Thread(new System.Threading.ThreadStart(CTrlThr));
this.CTrlThread.Start();
//
SendData();
}
private void RealTimeCurve_Paint(object sender, PaintEventArgs e)
{
DrawCoordinates();
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.Drawing;
using System.Windows.Forms;
namespace RealTimeCurve
{
public delegate void DrawHandler();
class clsDrawThread
{
public double X, Y, Tempetature, HeartRate;
private Bitmap bitGraph = null;
private bool blnStop = false;
private int nStartY = -1;
private int nStartY1 = -1;
private int nStartY2 = -1;
private int nStartY3 = -1;
private int nEndY = -1;
private int nEndY1 = -1;
private int nEndY2 = -1;
private int nEndY3 = -1;
// private Random ranPoint = null;
private int nWidth = 0;
private int nHeight = 0;
private Form frmParent;
private DrawHandler pHandler = null;
/// <summary>
/// Constructor
/// </summary>
/// <param name="pParent"></param>
/// <param name="Handler"></param>
/// <param name="Width"></param>
/// <param name="Height"></param>
public clsDrawThread(Form pParent, DrawHandler Handler, int Width, int Height)
{
// Init class member
nWidth = Width;
nHeight = Height;
frmParent = pParent;//Parent form
pHandler = Handler;//Call back delegate
// Create double buffer
bitGraph = new Bitmap(nWidth, nHeight);
// ranPoint = new Random(nHeight);//Create random
}
public bool IsStop
{
set { blnStop = value; }
}
public Image DrawImage
{
get { return bitGraph; }
}
/// <summary>
/// Sub thread entry function
/// </summary>
public void DrawGraph()
{
while (!blnStop)
{
Thread.Sleep(300);
if (blnStop) break;
//Redraw bitmap
RedrawImage();
//Refresh pictorebox
try
{
frmParent.Invoke(pHandler);
}
catch { break; }
}
}
/// <summary>
/// Re-draw image
/// </summary>
// RealTimeCurve rtc = new RealTimeCurve();
private void RedrawImage()
{
const int CLIP_WIDTH = 3;
Bitmap bitNew = new Bitmap(nWidth, nHeight);
Graphics gImage = Graphics.FromImage(bitNew);
// Use black color to fill the entire rectangle
gImage.FillRectangle(new SolidBrush(Color.White), new Rectangle(new Point(0, 0).X, new Point(0, 0).Y, new Size(nWidth, nHeight).Width, new Size(nWidth, nHeight).Height));
// Copy image from source image
gImage.DrawImage(bitGraph, new Rectangle(0, 0, nWidth - CLIP_WIDTH, nHeight), new Rectangle(CLIP_WIDTH, 0, nWidth - CLIP_WIDTH, nHeight), GraphicsUnit.Pixel);
// Draw new clip image
if (nStartY < 0)
nStartY = (3030 - (int)X)* 30/ 100;
else
nStartY = nEndY;
nEndY = (3030 - (int)X) * 30 / 100;
if (nStartY1 < 0)
nStartY1 = (3030 - (int)Y) * 30 / 100;
else
nStartY1 = nEndY1;
nEndY1 = (3030 - (int)Y) * 30 / 100;
if (nStartY2 < 0)
nStartY2 = (3030 - (int)Tempetature) * 30 / 100;
else
nStartY2 = nEndY2;
nEndY2 = (3030 - (int)Tempetature) * 30 / 100;
if (nStartY3 < 0)
nStartY3 = (3030 - (int)HeartRate) * 30 / 100;
else
nStartY3 = nEndY3;
nEndY3 = (3030 - (int)HeartRate) * 30 / 100;
// Draw new line
gImage.DrawLine(new Pen(Color.Yellow, 1.0f), new Point(nWidth - CLIP_WIDTH, nStartY).X, new Point(nWidth - CLIP_WIDTH, nStartY).Y, new Point(nWidth - 1, nEndY).X, new Point(nWidth - 1, nEndY).Y);
gImage.DrawLine(new Pen(Color.Red, 1.0f), new Point(nWidth - CLIP_WIDTH, nStartY1).X, new Point(nWidth - CLIP_WIDTH, nStartY1).Y, new Point(nWidth - 1, nEndY1).X, new Point(nWidth - 1, nEndY1).Y);
gImage.DrawLine(new Pen(Color.Blue, 1.0f), new Point(nWidth - CLIP_WIDTH, nStartY2).X, new Point(nWidth - CLIP_WIDTH, nStartY2).Y, new Point(nWidth - 1, nEndY2).X, new Point(nWidth - 1, nEndY2).Y);
gImage.DrawLine(new Pen(Color.Black, 1.0f), new Point(nWidth - CLIP_WIDTH, nStartY3).X, new Point(nWidth - CLIP_WIDTH, nStartY3).Y, new Point(nWidth - 1, nEndY3).X, new Point(nWidth - 1, nEndY3).Y);
// Set new image and release old image
Bitmap bitOld = bitGraph;
bitGraph = bitNew;
bitOld.Dispose();
}
}
}
上面代码中有两个namespace RealTimeCurve，不知道是怎么回事，谢谢！
代码注释
