测试命令
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温湿度：1005
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1 1 监控点1 1001 2001
闲话不多说，直接看代码：
1 using System; 2 using System.Collections.Generic; 3 using System.Text; 4 using System.Drawing; 5 using System.Drawing.Imaging; 6 7 namespace CKJKRJ.common 8 { 9 10 /// <summary> 11 /// 绘制曲线图 12 /// </summary> 13 public class Curve 14 { 15 public Curve() 16 { } 17 private Graphics objGraphics; //Graphics 类提供将对象绘制到显示设备的方法 18 private Bitmap objBitmap; //位图对象 19 20 private int m_Width = 640; //图像宽度 21 private int m_Height = 480; //图像高度 22 private float m_XSlice = 50; //X轴刻度宽度 23 private float m_YSlice = 50; //Y轴刻度宽度 24 private float m_YSliceValue = 20; //Y轴刻度的数值宽度 25 private float m_YSliceBegin = 0; //Y轴刻度开始值 26 private float m_Tension = 0.5f;//设置张力 27 private string m_Title = "节目访问量曲线图"; //Title 28 private string m_Unit = "万元"; //单位 29 private string m_XAxisText = "日期"; //X轴说明文字 30 private string m_YAxisText = "次"; //Y轴说明文字 31 private string[] m_Keys = new string[] { "一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月" }; //键 32 private int[] m_Values = new int[] { 32, 12, 32, 43, 54, 35, 35, 42, 63, 35, 35, 67 };//值 33 private Color m_BgColor = Color.Snow; //背景 34 private Color m_TextColor = Color.Black; //文字颜色 35 private Color m_BorderColor = Color.Black; //整体边框颜色 36 private Color m_AxisColor = Color.Black; //轴线颜色 37 private Color m_AxisTextColor = Color.Black; //轴说明文字颜色 38 private Color m_SliceTextColor = Color.Black; //刻度文字颜色 39 private Color m_SliceColor = Color.Black; //刻度颜色 40 private Color m_CurveColor = Color.Red; //曲线颜色 41 42 public int Width 43 { 44 set 45 { 46 if (value < 300) 47 { 48 m_Width = 300; 49 } 50 else 51 { 52 m_Width = value; 53 } 54 } 55 get 56 { 57 return m_Width; 58 } 59 } 60 61 public int Height 62 { 63 set 64 { 65 if (value < 300) 66 { 67 m_Height = 300; 68 } 69 else 70 { 71 m_Height = value; 72 } 73 } 74 get 75 { 76 return m_Height; 77 } 78 } 79 80 public float XSlice 81 { 82 set 83 { 84 m_XSlice = value; 85 } 86 get 87 { 88 return m_XSlice; 89 } 90 } 91 92 public float YSlice 93 { 94 set 95 { 96 m_YSlice = value; 97 } 98 get 99 { 100 return m_YSlice; 101 } 102 } 103 104 public float YSliceValue 105 { 106 set 107 { 108 m_YSliceValue = value; 109 } 110 get 111 { 112 return m_YSliceValue; 113 } 114 } 115 116 public float YSliceBegin 117 { 118 set 119 { 120 m_YSliceBegin = value; 121 } 122 get 123 { 124 return m_YSliceBegin; 125 } 126 } 127 128 public float Tension 129 { 130 set 131 { 132 if (value < 0.0f && value > 1.0f) 133 { 134 m_Tension = 0.5f; 135 } 136 else 137 { 138 m_Tension = value; 139 } 140 } 141 get 142 { 143 return m_Tension; 144 } 145 } 146 147 public string Title 148 { 149 set 150 { 151 m_Title = value; 152 } 153 get 154 { 155 return m_Title; 156 } 157 } 158 159 public string Unit 160 { 161 set 162 { 163 m_Unit = value; 164 } 165 get 166 { 167 return m_Unit; 168 } 169 } 170 171 public string[] Keys 172 { 173 set 174 { 175 m_Keys = value; 176 } 177 get 178 { 179 return m_Keys; 180 } 181 } 182 183 public int[] Values 184 { 185 set 186 { 187 m_Values = value; 188 } 189 get 190 { 191 return m_Values; 192 } 193 } 194 195 public Color BgColor 196 { 197 set 198 { 199 m_BgColor = value; 200 } 201 get 202 { 203 return m_BgColor; 204 } 205 } 206 207 public Color TextColor 208 { 209 set 210 { 211 m_TextColor = value; 212 } 213 get 214 { 215 return m_TextColor; 216 } 217 } 218 219 public Color BorderColor 220 { 221 set 222 { 223 m_BorderColor = value; 224 } 225 get 226 { 227 return m_BorderColor; 228 } 229 } 230 231 public Color AxisColor 232 { 233 set 234 { 235 m_AxisColor = value; 236 } 237 get 238 { 239 return m_AxisColor; 240 } 241 } 242 243 public string XAxisText 244 { 245 set 246 { 247 m_XAxisText = value; 248 } 249 get 250 { 251 return m_XAxisText; 252 } 253 } 254 255 public string YAxisText 256 { 257 set 258 { 259 m_YAxisText = value; 260 } 261 get 262 { 263 return m_YAxisText; 264 } 265 } 266 267 public Color AxisTextColor 268 { 269 set 270 { 271 m_AxisTextColor = value; 272 } 273 get 274 { 275 return m_AxisTextColor; 276 } 277 } 278 279 public Color SliceTextColor 280 { 281 set 282 { 283 m_SliceTextColor = value; 284 } 285 get 286 { 287 return m_SliceTextColor; 288 } 289 } 290 291 public Color SliceColor 292 { 293 set 294 { 295 m_SliceColor = value; 296 } 297 get 298 { 299 return m_SliceColor; 300 } 301 } 302 303 public Color CurveColor 304 { 305 set 306 { 307 m_CurveColor = value; 308 } 309 get 310 { 311 return m_CurveColor; 312 } 313 } 314 315 316 //生成图像并返回bmp图像对象 317 public Bitmap CreateImage() 318 { 319 InitializeGraph(); 320 321 DrawContent(ref objGraphics); 322 323 return objBitmap; 324 } 325 326 //初始化和填充图像区域，画出边框，初始标题 327 private void InitializeGraph() 328 { 329 330 //根据给定的高度和宽度创建一个位图图像 331 objBitmap = new Bitmap(Width, Height); 332 333 //从指定的 objBitmap 对象创建 objGraphics 对象 (即在objBitmap对象中画图) 334 objGraphics = Graphics.FromImage(objBitmap); 335 336 //根据给定颜色(LightGray)填充图像的矩形区域 (背景) 337 objGraphics.DrawRectangle(new Pen(BorderColor, 1), 0, 0, Width, Height); 338 objGraphics.FillRectangle(new SolidBrush(BgColor), 1, 1, Width - 2, Height - 2); 339 340 //画X轴,pen,x1,y1,x2,y2 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 341 objGraphics.DrawLine(new Pen(new SolidBrush(AxisColor), 1), 100, Height - 100, Width - 75, Height - 100); 342 343 //画Y轴,pen,x1,y1,x2,y2 344 objGraphics.DrawLine(new Pen(new SolidBrush(AxisColor), 1), 100, Height - 100, 100, 75); 345 346 //初始化轴线说明文字 347 SetAxisText(ref objGraphics); 348 349 //初始化X轴上的刻度和文字 350 SetXAxis(ref objGraphics); 351 352 //初始化Y轴上的刻度和文字 353 SetYAxis(ref objGraphics); 354 355 //初始化标题 356 CreateTitle(ref objGraphics); 357 } 358 359 private void SetAxisText(ref Graphics objGraphics) 360 { 361 objGraphics.DrawString(XAxisText, new Font("宋体", 10), new SolidBrush(AxisTextColor), Width / 2 - 50, Height - 50); 362 363 int X = 30; 364 int Y = (Height / 2) - 50; 365 for (int i = 0; i < YAxisText.Length; i++) 366 { 367 objGraphics.DrawString(YAxisText[i].ToString(), new Font("宋体", 10), new SolidBrush(AxisTextColor), X, Y); 368 Y += 15; 369 } 370 } 371 372 private void SetXAxis(ref Graphics objGraphics) 373 { 374 int x1 = 100; 375 int y1 = Height - 110; 376 int x2 = 100; 377 int y2 = Height - 90; 378 int iCount = 0; 379 int iSliceCount = 1; 380 float Scale = 0; 381 int iWidth = (int)((Width - 200) * (50 / XSlice)); 382 383 objGraphics.DrawString(Keys[0].ToString(), new Font("宋体", 10), new SolidBrush(SliceTextColor), 85, Height - 90); 384 385 for (int i = 0; i <= iWidth; i += 10) 386 { 387 Scale = i * (XSlice / 50); 388 389 if (iCount == 5) 390 { 391 objGraphics.DrawLine(new Pen(new SolidBrush(AxisColor)), x1 + Scale, y1, x2 + Scale, y2); 392 //The Point!这里显示X轴刻度 393 if (iSliceCount <= Keys.Length - 1) 394 { 395 objGraphics.DrawString(Keys[iSliceCount].ToString(), new Font("宋体", 10), new SolidBrush(SliceTextColor), x1 + Scale - 15, y2); 396 } 397 else 398 { 399 //超过范围，不画任何刻度文字 400 } 401 iCount = 0; 402 iSliceCount++; 403 if (x1 + Scale > Width - 100) 404 { 405 break; 406 } 407 } 408 else 409 { 410 objGraphics.DrawLine(new Pen(new SolidBrush(SliceColor)), x1 + Scale, y1 + 5, x2 + Scale, y2 - 5); 411 } 412 iCount++; 413 } 414 } 415 416 private void SetYAxis(ref Graphics objGraphics) 417 { 418 int x1 = 95; 419 int y1 = (int)(Height - 100 - 10 * (YSlice / 50)); 420 int x2 = 105; 421 int y2 = (int)(Height - 100 - 10 * (YSlice / 50)); 422 int iCount = 1; 423 float Scale = 0; 424 int iSliceCount = 1; 425 426 int iHeight = (int)((Height - 200) * (50 / YSlice)); 427 428 objGraphics.DrawString(YSliceBegin.ToString(), new Font("宋体", 10), new SolidBrush(SliceTextColor), 60, Height - 110); 429 430 for (int i = 0; i < iHeight; i += 10) 431 { 432 Scale = i * (YSlice / 50); 433 434 if (iCount == 5) 435 { 436 objGraphics.DrawLine(new Pen(new SolidBrush(AxisColor)), x1 - 5, y1 - Scale, x2 + 5, y2 - Scale); 437 //The Point!这里显示Y轴刻度 438 objGraphics.DrawString(Convert.ToString(YSliceValue * iSliceCount + YSliceBegin), new Font("宋体", 10), new SolidBrush(SliceTextColor), 60, y1 - Scale); 439 440 iCount = 0; 441 iSliceCount++; 442 } 443 else 444 { 445 objGraphics.DrawLine(new Pen(new SolidBrush(SliceColor)), x1, y1 - Scale, x2, y2 - Scale); 446 } 447 iCount++; 448 } 449 } 450 451 private void DrawContent(ref Graphics objGraphics) 452 { 453 if (Keys.Length == Values.Length) 454 { 455 Pen CurvePen = new Pen(CurveColor, 1); 456 PointF[] CurvePointF = new PointF[Keys.Length]; 457 float keys = 0; 458 float values = 0; 459 float Offset1 = (Height - 100) + YSliceBegin; 460 float Offset2 = (YSlice / 50) * (50 / YSliceValue); 461 462 for (int i = 0; i < Keys.Length; i++) 463 { 464 keys = XSlice * i + 100; 465 values = Offset1 - Values[i] * Offset2; 466 CurvePointF[i] = new PointF(keys, values); 467 } 468 objGraphics.DrawCurve(CurvePen, CurvePointF, Tension); 469 } 470 else 471 { 472 objGraphics.DrawString("Error!The length of Keys and Values must be same!", new Font("宋体", 16), new SolidBrush(TextColor), new Point(150, Height / 2)); 473 } 474 } 475 476 //初始化标题 477 private void CreateTitle(ref Graphics objGraphics) 478 { 479 objGraphics.DrawString(Title, new Font("宋体", 16), new SolidBrush(TextColor), new Point(5, 5)); 480 } 481 482 } 483 }