Boxings.cs

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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using FangPage.Common;

namespace FangPage.Boxing
{
    public class Boxing
    {
        static float move = 100f;//边框宽度

        static float Max_X = 30000f;//X轴最大值

        static float Max_Y_Left = 4000f;//左Y轴最大值

        static float Max_Y_Right = 40f;//右Y轴最大值

        static int XscaleCount = 15;//X轴刻度线数量

        static int YscaleCount = 4;//Y轴刻度线数量

        static string Y_Left_Title = "应力";//左Y轴名称
        static string Y_Right_Title = "温度";//右Y轴名称
        static string X_Title = "位置";//X轴名称

        public byte[] DrawBoxing(int width, int height, List<FPObject> datas)
        {
            Bitmap image = new Bitmap(width, height);

            Graphics gph = Graphics.FromImage(image);

            //清空图片背景色
            gph.Clear(Color.White);

            try
            {
                //画图片的边框线
                gph.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

                PointF cPt = new PointF(move, height / 2f);//中心点(坐标轴原点)   

                gph.DrawString(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), new Font("宋体", 12, FontStyle.Bold), Brushes.Black, new PointF(width / 2f - 50, 12));//图表标题  

                DrawY_Left(gph, width, height, Max_Y_Left, YscaleCount);

                DrawY_Right(gph, width, height, Max_Y_Right, YscaleCount);

                DrawX_Bottom(gph, width, height, Max_X, XscaleCount);

                DrawX_Top(gph, width, height, Max_X, XscaleCount);

                gph.DrawLine(new Pen(Brushes.DarkGray, 2), cPt.X, cPt.Y, width - move, cPt.Y);//画出中轴线

                float X_Between = (width - move * 2f) / Max_X;//水平间距像素

                float Y_Left_Between = (image.Height / 2f - move) / Max_Y_Left; //左Y轴间距像素