计算两点之间的角度的代码
时间：2014-05-02 16:32:44
收藏：0
阅读：257
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26 |
/// 离心率 /// 返回两点间的角度 private
double PointToAngle(Point AOrigin, Point APoint, double
AEccentricity) { if
(APoint.X == AOrigin.X)if (APoint.Y > AOrigin.Y) return
Math.PI * 0.5; else
return Math.PI * 1.5; else
if (APoint.Y == AOrigin.Y) if
(APoint.X > AOrigin.X) return
0; else
return Math.PI; else { double
Result = Math.Atan((AOrigin.Y - APoint.Y) / (AOrigin.X - APoint.X) * AEccentricity); if
((APoint.X <</SPAN> AOrigin.X) && (APoint.Y > AOrigin.Y)) return
Result + Math.PI; else
if ((APoint.X <</SPAN> AOrigin.X) && (APoint.Y <</SPAN> AOrigin.Y)) return
Result + Math.PI; else
if ((APoint.X > AOrigin.X) && (APoint.Y <</SPAN> AOrigin.Y)) return
Result + 2 * Math.PI; else
return Result; } } |
评论（0）