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  • GPS좌표 두지점간 거리계산 소스 - ASP/MSSQL/JS
    웹프로그래밍/ASP 2011. 5. 30. 17:41

     

     

    인터넷에서 찾은 php소스를 asp에서 사용할수 있도록 변환.

     

    [ASP]

    <%
    function asin(x)
        asin = atn(x / sqr(1 - x ^ 2))
    end function
    
    function acos(x)
        acos = M_PI_2 - asin(x)
    end function
    
    function getMeter(lat1, lng1, lat2, lng2)
      if (lat1 = lat2) and (lng1 = lng2) then
          getMeter = 0
      else
      pi = 4 * atn(1)
    
      e10 = lat1 * pi / 180
      e11 = lng1 * pi / 180
      e12 = lat2 * pi / 180
      e13 = lng2 * pi / 180
    
      c16 = 6356752.314140910
      c15 = 6378137.000000000
      c17 = 0.0033528107
    
      f15 = c17 + c17 * c17
      f16 = f15 / 2
      f17 = c17 * c17 / 2
      f18 = c17 * c17 / 8
      f19 = c17 * c17 / 16
    
      c18 = e13 - e11
      c20 = (1 - c17) * tan(e10)
      c21 = atn(c20)
      c22 = sin(c21)
      c23 = cos(c21)
      c24 = (1 - c17) * tan(e12)
      c25 = atn(c24)
      c26 = sin(c25)
      c27 = cos(c25)
    
      c29 = c18
      c31 = (c27 * sin(c29) * c27 * sin(c29)) + (c23 * c26 - c22 * c27 * cos(c29)) * (c23 * c26 - c22 * c27 * cos(c29))
      c33 = (c22 * c26) + (c23 * c27 * cos(c29))
      c35 = sqr(c31) / c33
      c36 = atn(c35)
      c38 = 0
      if c31 = 0 then
       c38 = 0
      else
       c38 = c23 * c27 * sin(c29) / sqr(c31)
      end if
    
      c40 = 0
      if (cos(asin(c38)) * cos(asin(c38))) = 0 then
       c40 = 0
      else
       c40 = c33 - 2 * c22 * c26 / (cos(asin(c38)) * cos(asin(c38)))
      end if
    
      c41 = cos(asin(c38)) * cos(asin(c38)) * (c15 * c15 - c16 * c16) / (c16 * c16)
      c43 = 1 + c41 / 16384 * (4096 + c41 * (-768 + c41 * (320 - 175 * c41)))
      c45 = c41 / 1024 * (256 + c41 * (-128 + c41 * (74 - 47 * c41)))
      c47 = c45 * sqr(c31) * (c40 + c45 / 4 * (c33 * (-1 + 2 * c40 * c40) - c45 / 6 * c40 * (-3 + 4 * c31) * (-3 + 4 * c40 * c40)))
      c50 = c17 / 16 * cos(asin(c38)) * cos(asin(c38)) * (4 + c17 * (4 - 3 * cos(asin(c38)) * cos(asin(c38))))
      c52 = c18 + (1 - c50) * c17 * c38 * (acos(c33) + c50 * sin(acos(c33)) * (c40 + c50 * c33 * (-1 + 2 * c40 * c40)))
    
      c54 = c16 * c43 * (atn(c35) - c47)
    
      getMeter = FormatNumber((c54/1000),1) '키로미터
      end if
    end function
    %>

     

    [사용예]

    '전주역 : 35.849773, 127.161796
    '전주시청 : 35.824112, 127.148078
    response.write(getMeter(35.849773, 127.161796, 35.824112, 127.148078) &"km")

    [결과]

    3.1km

     

     

    [MSSQL]

    select
    (
      6371     /* 6371->키로미터 단위, 3959->마일단위 */
      * acos(
        cos( radians(lat1) )
        * cos( radians(lat2))
        * cos(
          radians(lng2) - radians(lng1)
        )
        + sin( radians(lat1) )
        * sin( radians(lat2) )
      )
    ) AS distance
    from 테이블

     

    [Java Script]

    function getmeter(lat1, lon1, lat2, lon2) {
      delta_lon = deg2rad(lon2) - deg2rad(lon1);
      
      distance = Math.acos(Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) *
      Math.cos(delta_lon)) * 3963.189; //마일
      
      gap = parseInt(distance * 1609.344);
      return gap;
    }
    
    function deg2rad(val) {
      var pi = Math.PI;
      var de_ra = ((eval(val))*(pi/180));
      return de_ra;
    }

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