这是以前初学c#时,拿来练手的东西。功能很简单,就是读取kml格式的路径坐标(在ge上,我自己手工用鼠标拾取,并保存为kml文件),经过那个经纬度的什么变换后,显示出平面图形。
我的目标是自己独立(可以和其他朋友一起)完成一套实用的,可扩展的gis系统。呵呵,目标是不是有点过大了,不过就是定个目标督促自己好好干而已。本着一腔热血,来向各位高人前辈学习。大家请批评指正,能给出建议当然更好了。
图种红蓝两色分别是变换前后的对比(变换前为经纬度坐标)。
Form1.Designer.cs代码:
![](/Images/OutliningIndicators/ContractedBlock.gif)
Code
1
namespace WindowsTest
2![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](/Images/OutliningIndicators/ContractedBlock.gif)
{
3
partial class Form1
4![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
5![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
/**//// <summary>
6
/// Required designer variable.
7
/// </summary>
8
private System.ComponentModel.IContainer components = null;
9![](/Images/OutliningIndicators/InBlock.gif)
10![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
/**//// <summary>
11
/// Clean up any resources being used.
12
/// </summary>
13
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
14
protected override void Dispose(bool disposing)
15![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
16
if (disposing && (components != null))
17![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
18
components.Dispose();
19
}
20
base.Dispose(disposing);
21
}
22![](/Images/OutliningIndicators/InBlock.gif)
23![](/Images/OutliningIndicators/ContractedSubBlock.gif)
Windows Form Designer generated code#region Windows Form Designer generated code
24![](/Images/OutliningIndicators/InBlock.gif)
25![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
/**//// <summary>
26
/// Required method for Designer support - do not modify
27
/// the contents of this method with the code editor.
28
/// </summary>
29
private void InitializeComponent()
30![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
31
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
32
this.button1 = new System.Windows.Forms.Button();
33
this.button2 = new System.Windows.Forms.Button();
34
this.label1 = new System.Windows.Forms.Label();
35
this.CoorX = new System.Windows.Forms.Label();
36
this.CoorY = new System.Windows.Forms.Label();
37
this.panel1 = new System.Windows.Forms.Panel();
38
this.SuspendLayout();
39
//
40
// openFileDialog1
41
//
42
this.openFileDialog1.FileName = "openFileDialog1";
43
this.openFileDialog1.FileOk += new System.ComponentModel.CancelEventHandler(this.openFileDialog1_FileOk);
44
//
45
// button1
46
//
47
this.button1.Location = new System.Drawing.Point(21, 12);
48
this.button1.Name = "button1";
49
this.button1.Size = new System.Drawing.Size(75, 23);
50
this.button1.TabIndex = 0;
51
this.button1.Text = "打开";
52
this.button1.UseVisualStyleBackColor = true;
53
this.button1.Click += new System.EventHandler(this.button1_Click);
54
//
55
// button2
56
//
57
this.button2.Location = new System.Drawing.Point(21, 52);
58
this.button2.Name = "button2";
59
this.button2.Size = new System.Drawing.Size(75, 23);
60
this.button2.TabIndex = 1;
61
this.button2.Text = "显示";
62
this.button2.UseVisualStyleBackColor = true;
63
this.button2.Click += new System.EventHandler(this.button2_Click);
64
//
65
// label1
66
//
67
this.label1.AutoSize = true;
68
this.label1.Location = new System.Drawing.Point(146, 57);
69
this.label1.Name = "label1";
70
this.label1.Size = new System.Drawing.Size(41, 12);
71
this.label1.TabIndex = 2;
72
this.label1.Text = "label1";
73
//
74
// CoorX
75
//
76
this.CoorX.AutoSize = true;
77
this.CoorX.Location = new System.Drawing.Point(146, 17);
78
this.CoorX.Name = "CoorX";
79
this.CoorX.Size = new System.Drawing.Size(41, 12);
80
this.CoorX.TabIndex = 3;
81
this.CoorX.Text = "label2";
82
//
83
// CoorY
84
//
85
this.CoorY.AutoSize = true;
86
this.CoorY.Location = new System.Drawing.Point(241, 17);
87
this.CoorY.Name = "CoorY";
88
this.CoorY.Size = new System.Drawing.Size(41, 12);
89
this.CoorY.TabIndex = 4;
90
this.CoorY.Text = "label3";
91
//
92
// panel1
93
//
94
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
95
this.panel1.Location = new System.Drawing.Point(243, 57);
96
this.panel1.Name = "panel1";
97
this.panel1.Size = new System.Drawing.Size(300, 300);
98
this.panel1.TabIndex = 5;
99
this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel1_Paint);
100
//
101
// Form1
102
//
103
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
104
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
105
this.ClientSize = new System.Drawing.Size(565, 376);
106
this.Controls.Add(this.panel1);
107
this.Controls.Add(this.CoorY);
108
this.Controls.Add(this.CoorX);
109
this.Controls.Add(this.label1);
110
this.Controls.Add(this.button2);
111
this.Controls.Add(this.button1);
112
this.Name = "Form1";
113
this.Text = "Form1";
114
this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
115
this.ResumeLayout(false);
116
this.PerformLayout();
117![](/Images/OutliningIndicators/InBlock.gif)
118
}
119![](/Images/OutliningIndicators/InBlock.gif)
120
#endregion
121![](/Images/OutliningIndicators/InBlock.gif)
122
private System.Windows.Forms.OpenFileDialog openFileDialog1;
123
private System.Windows.Forms.Button button1;
124
private System.Windows.Forms.Button button2;
125
private System.Windows.Forms.Label label1;
126
private System.Windows.Forms.Label CoorX;
127
private System.Windows.Forms.Label CoorY;
128
private System.Windows.Forms.Panel panel1;
129
}
130
}
131![](/Images/OutliningIndicators/None.gif)
132![](/Images/OutliningIndicators/None.gif)
Form1.cs代码:
![](/Images/OutliningIndicators/ContractedBlock.gif)
Code
1
using System;
2
using System.Collections.Generic;
3
using System.ComponentModel;
4
using System.Data;
5
using System.Drawing;
6
using System.Drawing.Drawing2D;
7
using System.Text;
8
using System.Windows.Forms;
9
using System.IO;
10
using System.Collections;
11
namespace WindowsTest
12![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](/Images/OutliningIndicators/ContractedBlock.gif)
{
13
public partial class Form1 : Form
14![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
15
//double MinX = 0;
16
//double MinY = 0;
17
//double MaxX = 0;
18
//double MaxY = 0;
19
//LBXY lb2xy = new LBXY(121, 32);
20![](/Images/OutliningIndicators/InBlock.gif)
21
int ZoneWidth;
22
int ZoneHeight;
23
bool IsDraw = false;
24
ArrayList data;
25
ArrayList data2DPoint1;
26
ArrayList data2DPoint2;
27
string filePath;
28
//Stream ss;
29
string[] fileLines;
30
public Form1()
31![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
32![](/Images/OutliningIndicators/InBlock.gif)
33
InitializeComponent();
34
ZoneWidth = this.panel1.Width;
35
ZoneHeight = this.panel1.Height;
36
}
37![](/Images/OutliningIndicators/InBlock.gif)
38
private void button1_Click(object sender, EventArgs e)
39![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
40
openFileDialog1.ShowDialog();
41
}
42![](/Images/OutliningIndicators/InBlock.gif)
43
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
44![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
45
filePath = openFileDialog1.FileName;
46
//ss = openFileDialog1.OpenFile();
47
}
48![](/Images/OutliningIndicators/InBlock.gif)
49
private void button2_Click(object sender, EventArgs e)
50![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
51
//ss = openFileDialog1.OpenFile();
52
//long fl=ss.Length;
53![](/Images/OutliningIndicators/InBlock.gif)
54
//StreamWriter sw = new StreamWriter(ss);
55
//StreamReader sr = new StreamReader(ss);
56
//sr.ReadLine();
57
if (filePath == null || filePath == "")
58
return;
59
try
60![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
61
fileLines = File.ReadAllLines(filePath);
62
string currentLine = fileLines[0];
63
label1.Text = "共有:" + fileLines.Length + "行";
64
StringBuilder sb = new StringBuilder(currentLine);
65
sb.Replace("<coordinates>", "");
66
sb.Replace("</coordinates>", "");
67
currentLine = sb.ToString();
68
string[] Coordinates = currentLine.Split(' ');
69
int PointCount = Coordinates.Length;
70
//string[][] Points = new string[PointCount][];
71
data = new ArrayList();
72
data2DPoint1 = new ArrayList();
73
data2DPoint2 = new ArrayList();
74![](/Images/OutliningIndicators/InBlock.gif)
75
for (int i = 0; i < PointCount; i++)
76![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
77
if (Coordinates[i] != null && Coordinates[i] != "")
78![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
79
PointCoordinate dpc = new PointCoordinate(Coordinates[i]);
80
data.Add(dpc);
81
}
82
}
83
int tempX,tempY;
84
PointCount = data.Count;
85![](/Images/OutliningIndicators/InBlock.gif)
86
for (int i = 0; i < PointCount; i++)
87![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
88
new LBXY((PointCoordinate)data[i]);
89
}
90
for (int i = 0; i < PointCount; i++)
91![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
92
tempX =(int)(((PointCoordinate)data[i]).xRatio * ZoneWidth);
93
tempY =ZoneHeight-(int)(((PointCoordinate)data[i]).yRatio * ZoneHeight);
94![](/Images/OutliningIndicators/InBlock.gif)
95
Point dp = new Point(tempX, tempY);
96
data2DPoint1.Add(dp);
97![](/Images/OutliningIndicators/InBlock.gif)
98
tempX = (int)(((PointCoordinate)data[i]).lonRatio * ZoneWidth);
99
tempY = ZoneHeight - (int)(((PointCoordinate)data[i]).latRatio * ZoneHeight);
100![](/Images/OutliningIndicators/InBlock.gif)
101
dp = new Point(tempX, tempY);
102
data2DPoint2.Add(dp);
103
}
104
//dataGridView1.DataSource = data;
105
IsDraw = true;
106
this.Refresh();
107![](/Images/OutliningIndicators/InBlock.gif)
108![](/Images/OutliningIndicators/InBlock.gif)
109![](/Images/OutliningIndicators/InBlock.gif)
110
}
111
catch (Exception)
112![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
113
throw new Exception("读文件失败!");
114
}
115![](/Images/OutliningIndicators/InBlock.gif)
116
//ss.Close();
117
}
118![](/Images/OutliningIndicators/InBlock.gif)
119
private void Form1_MouseMove(object sender, MouseEventArgs e)
120![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
121
CoorX.Text = e.X.ToString();
122
CoorY.Text = e.Y.ToString();
123
}
124![](/Images/OutliningIndicators/InBlock.gif)
125
private void panel1_Paint(object sender, PaintEventArgs e)
126![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
127
Graphics g = e.Graphics;
128
Pen BluePen = new Pen(Color.Blue, 2);
129
Pen RedPen = new Pen(Color.Red, 2);
130
Brush RedBrush = new SolidBrush(Color.Red);
131
Brush GreenBrush = new SolidBrush(Color.Green);
132
//g.DrawLine(BluePen, new Point(0, 0), new Point(180, 100));
133![](/Images/OutliningIndicators/InBlock.gif)
134
if (IsDraw)
135![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
136![](/Images/OutliningIndicators/InBlock.gif)
137
int pCount = data2DPoint1.Count;
138
if (pCount < 1)
139
return;
140![](/Images/OutliningIndicators/InBlock.gif)
141
for (int i = 1; i < pCount; i++)
142![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
143
//g.DrawLine(BluePen, data2DPoint[i - 1], data2DPoint[i]);
144
g.DrawLine(BluePen, (Point)data2DPoint1[i - 1], (Point)data2DPoint1[i]);
145
}
146![](/Images/OutliningIndicators/InBlock.gif)
147![](/Images/OutliningIndicators/InBlock.gif)
148![](/Images/OutliningIndicators/InBlock.gif)
149
pCount = data2DPoint2.Count;
150
if (pCount < 1)
151
return;
152![](/Images/OutliningIndicators/InBlock.gif)
153
for (int i = 1; i < pCount; i++)
154![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
155
//g.DrawLine(BluePen, data2DPoint[i - 1], data2DPoint[i]);
156
g.DrawLine(RedPen, (Point)data2DPoint2[i - 1], (Point)data2DPoint2[i]);
157
}
158
}
159![](/Images/OutliningIndicators/InBlock.gif)
160
}
161![](/Images/OutliningIndicators/InBlock.gif)
162![](/Images/OutliningIndicators/InBlock.gif)
163
}
164![](/Images/OutliningIndicators/InBlock.gif)
165
public class PointCoordinate
166![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
167
private double lon;
168
private double lat;
169
private double alt;
170
public double x;
171
public double y;
172
private static double minX = double.MaxValue;
173
private static double maxX = double.MinValue;
174
private static double minY = double.MaxValue;
175
private static double maxY = double.MinValue;
176
public static double minlon = double.MaxValue;
177
public static double minlat = double.MaxValue;
178
public static double minalt = double.MaxValue;
179
public static double maxlon = double.MinValue;
180
public static double maxlat = double.MinValue;
181
public static double maxalt = double.MinValue;
182![](/Images/OutliningIndicators/InBlock.gif)
183![](/Images/OutliningIndicators/ContractedSubBlock.gif)
Attribute#region Attribute
184![](/Images/OutliningIndicators/InBlock.gif)
185
public double Lon
186![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
187
get
188![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
189
return lon;
190
}
191
set
192![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
193
lon = value;
194
}
195
}
196
public double Lat
197![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
198
get
199![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
200
return lat;
201
}
202
set
203![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
204
lat = value;
205
}
206
}
207
public double Alt
208![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
209
get
210![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
211
return alt;
212
}
213
set
214![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
215
alt = value;
216
}
217
}
218![](/Images/OutliningIndicators/InBlock.gif)
219
#endregion
220![](/Images/OutliningIndicators/InBlock.gif)
221![](/Images/OutliningIndicators/ContractedSubBlock.gif)
ConStructions#region ConStructions
222![](/Images/OutliningIndicators/InBlock.gif)
223
public PointCoordinate(double lon, double lat, double alt)
224![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
225
init(lon, lat, alt);
226
}
227
public PointCoordinate(string lon, string lat, string alt)
228![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
229
init(lon, lat, alt);
230
}
231
public PointCoordinate(string[] OnePoint)
232![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
233
init(OnePoint);
234
}
235![](/Images/OutliningIndicators/InBlock.gif)
236
public PointCoordinate(string tuples)
237![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
238
init(tuples);
239
}
240![](/Images/OutliningIndicators/InBlock.gif)
241
#endregion
242![](/Images/OutliningIndicators/InBlock.gif)
243![](/Images/OutliningIndicators/ContractedSubBlock.gif)
Initilation#region Initilation
244![](/Images/OutliningIndicators/InBlock.gif)
245
private void init(double lon, double lat, double alt)
246![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
247
this.lon = lon;
248
this.lat = lat;
249
this.alt = alt;
250
//LBXY lbxy = new LBXY(this.lon, this.lat);
251
//this.x = lbxy.x;
252
//this.y = lbxy.y;
253
//CheckRange();
254
CheckEarthRange();
255
}
256
private void init(string lon, string lat, string alt)
257![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
258
init(Convert.ToDouble(lon), Convert.ToDouble(lat), Convert.ToDouble(alt));
259
}
260
private void init(string[] OnePoint)
261![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
262
int CheckLen = OnePoint.Length;
263![](/Images/OutliningIndicators/InBlock.gif)
264
if (CheckLen == 3)
265
init(OnePoint[0], OnePoint[1], OnePoint[2]);
266
else if(CheckLen==2)
267
init(OnePoint[0], OnePoint[1], "0.0");
268
}
269
private void init(string tuples)
270![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
271
string[] OnePoint = tuples.Split(',');
272
init(OnePoint);
273
}
274![](/Images/OutliningIndicators/InBlock.gif)
275
#endregion
276![](/Images/OutliningIndicators/InBlock.gif)
277
private void CheckEarthRange()
278![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
279
if (lon < minlon) minlon = lon;
280
if (lon > maxlon) maxlon = lon;
281
if (lat < minlat) minlat = lat;
282
if (lat > maxlat) maxlat = lat;
283
if (alt < minalt) minalt = alt;
284
if (alt > maxalt) maxalt = alt;
285
}
286
public void CheckRange()
287![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
288
if (x < minX) minX = x;
289
if (x > maxX) maxX = x;
290
if (y < minY) minY = y;
291
if (y > maxY) maxY = y;
292
}
293![](/Images/OutliningIndicators/InBlock.gif)
294
//public double LonRatio
295
//{
296
// get
297
// {
298
// if((maxlon - minlon)!=0)
299
// return (lon - minlon) / (maxlon - minlon);
300
// else
301
// return 0.0;
302
// }
303
//}
304
//public double LatRatio
305
//{
306
// get
307
// {
308
// if((maxlat - minlat)!=0)
309
// return (lat - minlat) / (maxlat - minlat);
310
// else
311
// return 0.0;
312
// }
313
//}
314
public double xRatio
315![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
316
get
317![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
318
if ((maxX - minX) != 0)
319
return (x - minX) / (maxX - minX);
320
else
321
return 0.0;
322
}
323
}
324
public double yRatio
325![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
326
get
327![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
328
if ((maxY - minY) != 0)
329
return (y - minY) / (maxY - minY);
330
else
331
return 0.0;
332
}
333
}
334
public double lonRatio
335![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
336
get
337![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
338
if ((maxlon - minlon) != 0)
339
return (lon - minlon) / (maxlon - minlon);
340
else
341
return 0.0;
342
}
343
}
344
public double latRatio
345![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
346
get
347![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
348
if ((maxlat - minlat) != 0)
349
return (lat - minlat) / (maxlat - minlat);
350
else
351
return 0.0;
352
}
353
}
354![](/Images/OutliningIndicators/InBlock.gif)
355
}
356![](/Images/OutliningIndicators/InBlock.gif)
357
public class LBXY
358![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
359
public double l;//角度
360
public double b;//角度
361
private double L;//弧度
362
private double B;//弧度
363
private double l0;
364
private double L0;
365
public double x;
366
public double y;
367![](/Images/OutliningIndicators/InBlock.gif)
368
public LBXY(double l, double b)
369![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
370
this.l = l;
371
this.b = b;
372
l0 = ML(l);
373
L0 = Deg2Arc(l0);
374
L = Deg2Arc(l);
375
B = Deg2Arc(b);
376
LB2XY();
377
}
378![](/Images/OutliningIndicators/InBlock.gif)
379
public LBXY(PointCoordinate pc)
380![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
381
this.l = pc.Lon;
382
this.b = pc.Lat;
383
l0 = ML((PointCoordinate.maxlon + PointCoordinate.minlon) / 2.0);
384
L0 = Deg2Arc(l0);
385
L = Deg2Arc(l);
386
B = Deg2Arc(b);
387
LB2XY();
388
pc.x = this.y;
389
pc.y = this.x;
390
pc.CheckRange();
391
}
392![](/Images/OutliningIndicators/InBlock.gif)
393
public double Arc2Deg(double arc)
394![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
395
return arc * 180 / Math.PI;
396
}
397
public double Deg2Arc(double deg)
398![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
399
return deg * Math.PI / 180;
400
}
401
public double ML(double lon)
402![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
403
int ZoneID=(int)(lon / 6) + 1;
404
double rev = (double)(ZoneID * 6 - 3);
405
return rev;
406
}
407
408
public void LB2XY()
409![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
410
double e2 = 0.006739501819;
411
double c = 6399596.65198801;//单位:m
412
//double e2 = 0.006738525415;
413
//double c = 6399698.9018;//单位:m
414![](/Images/OutliningIndicators/InBlock.gif)
415
double t = Math.Tan(B);
416
double eta2 = e2 * Math.Cos(B) * Math.Cos(B);
417
double N = c / Math.Sqrt(1 + eta2);
418
double m = Math.Cos(B)*(L-L0);
419
double X = 111134.0047 * b
420
- (
421
32009.8575 * Math.Sin(B)
422
+ 133.9602 * Math.Pow(Math.Sin(B), 3)
423
+ 0.6976 * Math.Pow(Math.Sin(B), 5)
424
+ 0.0039 * Math.Pow(Math.Sin(B), 7)
425
) * Math.Cos(B);
426
double q1, q2, q3, q4;
427
q1 = t*t;
428
q2 = Math.Pow(t, 4);
429
q3 = m * m;
430
q4 = Math.Pow(m, 4);
431![](/Images/OutliningIndicators/InBlock.gif)
432
x=X+N*t*q3*(0.5+(5-q1+9*eta2+4*eta2*eta2)*q3/24+(61-58*q1+q2)*q4/720);//纵轴,经线方向
433
y=N*m*(1+(1-q1+eta2)*q3/6+(5-18*q1+q2+14*eta2-58*eta2*q1)*q4/720);//横轴,赤道方向
434
}
435
}
436![](/Images/OutliningIndicators/InBlock.gif)
437
}
效果显示: