曲线任意里程坐标正反算(VB6.0)

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   qxxy(3, 5) = 112.779:  qxxy(3, 6) = 221.75: qxxy(3, 7) = 221.75: qxxy(3, 8) = -1
  
   qxxy(4, 1) = 919.527: qxxy(4, 2) = 19736.072: qxxy(4, 3) = 28701.893: qxxy(4, 4) = 1.593343217
   qxxy(4, 5) = 80.285: qxxy(4, 6) = 221.75: qxxy(4, 7) = 9579.228: qxxy(4, 8) = -1
  
   qxxy(5, 1) = 999.812: qxxy(5, 2) = 19744.038: qxxy(5, 3) = 28781.659: qxxy(5, 4) = 1.408141337
   qxxy(5, 5) = 100#: qxxy(5, 6) = 1E+45: qxxy(5, 7) = 1E+45: qxxy(5, 8) = 0
  
   '将要计算坐标的里程桩号及距中线距离存入数组xsz中
   xsz(1, 1) = 700: xsz(1, 2) = -5
   xsz(2, 1) = 700: xsz(2, 2) = 0
   xsz(3, 1) = 700: xsz(3, 2) = 5
  
   xsz(4, 1) = 780: xsz(4, 2) = -5
   xsz(5, 1) = 780: xsz(5, 2) = 0
   xsz(6, 1) = 780: xsz(6, 2) = 5
  
   xsz(7, 1) = 870: xsz(7, 2) = -5
   xsz(8, 1) = 870: xsz(8, 2) = 0
   xsz(9, 1) = 870: xsz(9, 2) = 5
  
   xsz(10, 1) = 940: xsz(10, 2) = -5.123
   xsz(11, 1) = 940: xsz(11, 2) = 0
   xsz(12, 1) = 940: xsz(12, 2) = 3.009

   Dim i As Integer
   Dim j As Integer
   Dim k As Integer
   Dim ysb(8) As Double
   Dim wzb(3) As Double
   Dim jgb(3) As Double
  
   Txt1.Text = ""
   For i = 1 To 12
       For j = 1 To 5
           If qxxy(j, 1) <= xsz(i, 1) And xsz(i, 1) <= qxxy(j, 1) + qxxy(j, 5) Then
              For k = 1 To 8: ysb(k) = qxxy(j, k): Next k
              For k = 1 To 2: wzb(k) = xsz(i, k): Next k
              '调用正算函数
              Call qxzs(ysb(), wzb(), jgb())
              Txt1.Text = Txt1.Text + Str(wzb(1)) + "  " + Str(wzb(2)) + Chr(13) + Chr(10)
              For k = 1 To 3
                 Txt1.Text = Txt1.Text + Str(jgb(k)) + Chr(13) + Chr(10)
              Next k
              Txt1.Text = Txt1.Text + Chr(13) + Chr(10)
              Exit For
           End If
        Next j
   Next i
  
End Sub

Private Sub Cmd2_Click()
   '反算测试程序
   Dim qxxy(100, 8) As Double
   Dim xsz(100, 3) As Double
      
   '线元要素表存入数组qxxy中，切线方位角以弧度为单位
   '可采用读文本文件、Excel数据表中的数据或其它方式读入数据替代以下直接赋值方式
   qxxy(1, 1) = 500: qxxy(1, 2) = 19942.837: qxxy(1, 3) = 28343.561: qxxy(1, 4) = 2.186466069
   qxxy(1, 5) = 269.256: qxxy(1, 6) = 1E+45: qxxy(1, 7) = 1E+45: qxxy(1, 8) = 0
  
   qxxy(2, 1) = 769.256: qxxy(2, 2) = 19787.34: qxxy(2, 3) = 28563.378: qxxy(2, 4) = 2.186466069
   qxxy(2, 5) = 37.492: qxxy(2, 6) = 1E+45: qxxy(2, 7) = 221.75: qxxy(2, 8) = -1
  
   qxxy(3, 1) = 806.748: qxxy(3, 2) = 19766.566: qxxy(3, 3) = 28594.574: qxxy(3, 4) = 2.101929446
   qxxy(3, 5) = 112.779:  qxxy(3, 6) = 221.75: qxxy(3, 7) = 221.75: qxxy(3, 8) = -1
  
   qxxy(4, 1) = 919.527: qxxy(4, 2) = 19736.072: qxxy(4, 3) = 28701.893: qxxy(4, 4) = 1.593343217
   qxxy(4, 5) = 80.285: qxxy(4, 6) = 221.75: qxxy(4, 7) = 9579.228: qxxy(4, 8) = -1
  
   qxxy(5, 1) = 999.812: qxxy(5, 2) = 19744.038: qxxy(5, 3) = 28781.659: qxxy(5, 4) = 1.408141337
   qxxy(5, 5) = 100#: qxxy(5, 6) = 1E+45: qxxy(5, 7) = 1E+45: qxxy(5, 8) = 0
  
   '将要反算里程桩号及距中线距离的点坐标存入数组xsz中
   '由于没有提供判断点与线元关系的函数据，以下数据中的
   '第一个数为里程桩号，用于确定所求点所在的线元
   xsz(1, 1) = 501: xsz(1, 2) = 19831.418: xsz(1, 3) = 28509.726
   xsz(2, 1) = 501: xsz(2, 2) = 19827.336: xsz(2, 3) = 28506.838
   xsz(3, 1) = 500: xsz(3, 2) = 19823.25398: xsz(3, 3) = 28503.95084
  
   xsz(4, 1) = 770: xsz(4, 2) = 19785.25749: xsz(4, 3) = 28575.0227
   xsz(5, 1) = 770: xsz(5, 2) = 19781.15561: xsz(5, 3) = 28572.16358
   xsz(6, 1) = 770: xsz(6, 2) = 19777.05373: xsz(6, 3) = 28569.30446
  
   xsz(7, 1) = 807: xsz(7, 2) = 19747.536: xsz(7, 3) = 28654.131
   xsz(8, 1) = 807: xsz(8, 2) = 19742.686: xsz(8, 3) = 28652.914
   xsz(9, 1) = 807: xsz(9, 2) = 19737.837: xsz(9, 3) = 28651.697
  
   xsz(10, 1) = 920: xsz(10, 2) = 19741.5912: xsz(10, 3) = 28722.058
   xsz(11, 1) = 920: xsz(11, 2) = 19736.4769: xsz(11, 3) = 28722.3564
   xsz(12, 1) = 920: xsz(12, 2) = 19733.473: xsz(12, 3) = 28722.5317


   Dim i As Integer
   Dim j As Integer
   Dim k As Integer
   Dim ysb(8) As Double
   Dim wzb(3) As Double
   Dim jgb(3) As Double
  
   Txt1.Text = ""
   For i = 1 To 12
       For j = 1 To 5
           If qxxy(j, 1) <= xsz(i, 1) And xsz(i, 1) < qxxy(j, 1) + qxxy(j, 5) Then
              For k = 1 To 8: ysb(k) = qxxy(j, k): Next k
              For k = 1 To 2: wzb(k) = xsz(i, k + 1): Next k
              '调用反算函数
              Call qxfs(ysb(), wzb(), jgb())

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，曲线任意里程坐标正反算(VB6.0)