測邊交會
option compare database
public ddd_x as double, ddd_y as double '待定點x，y
'已知a、b兩點座標及觀測的邊長計算待定點座標,bcjsdddzb的中文意思是由觀測邊長計算待定點座標
public sub bcjsdddzb(xa as double, ya as double, xb as double, yb as double, l1 as double, l2 as double)
dim sab as double, l as double, h as double, cosab as double, sinab as double
sab = sqr((xb - xa) * (xb - xa) + (yb - ya) * (yb - ya))
l = (l1 * l1 + sab * sab - l2 * l2) / (2 * sab)
h = sqr(l1 * l1 - l * l)
cosab = (xb - xa) / sab
sinab = (yb - ya) / sab
ddd_x = xa + l * cosab + h * sinab
ddd_y = ya + l * sinab - h * cosab
end sub
private sub cmd_返回選題介面_click()
"選題介面", acnormalacnormal
acform, "測邊交會"
end sub
private sub cmd_計算_click()
dim xa as double, ya as double, xb as double, yb as double, l1 as double, l2 as double
if isnull( or isnull( or isnull( or isnull( then
msgbox "請輸入完整的座標資料！！！", vbokcancel + vbinformation, "提示"
end if
if isnull( or isnull( then
msgbox "請輸入完整的觀測邊長資料！！！", vbokcancel + vbinformation, "提示"
end if
xa = ya =
xb = yb =
l1 = l2 =
if (xb - xa) = 0 and (yb - ya) = 0 then
msgbox "您選擇的是同乙個點！", vbokonly + vbexclamation, "提示資訊"
else
call bcjsdddzb(xa, ya, xb, yb, l1, l2)
= format(ddd_x, "0.000")
= format(ddd_y, "0.000")
end if
end sub
private sub cmd_資料清空_click()
= "": = ""
= "": = ""
= "": = ""
= "": = ""
end sub
private sub form_load()
= "": = ""
= "": = ""
= "": = ""
= "": = ""
end sub
測角交會
option compare database
const pi = 3.14159265358979
public ddd_x as double, ddd_y as double '待定點x，y
'角度化弧度
public function angletoradian(byval alfa as double) as double
alfa = alfa + 0.00000000000001
dim alfa1 as double, alfa2 as double
alfa1 = fix(alfa) + fix((alfa - fix(alfa)) * 100#) / 60#
alfa2 = (alfa * 100# - fix(alfa * 100#)) / 36#
angletoradian = (alfa2 + alfa1) * pi / 180#
end function
'已知a、b兩點座標及觀測的角度計算待定點座標,jdjsdddzb的中文意思是由觀測角度計算待定點座標
public sub jdjsdddzb(xa as double, ya as double, xb as double, yb as double, jda as double, jdb as double)
dim tana as double, tanb as double
jda = angletoradian(jda)
jdb = angletoradian(jdb)
tana = tan(jda)
tanb = tan(jdb)
ddd_x = (xa * tana + xb * tanb + (yb - ya) * tana * tanb) / (tana + tanb)
ddd_y = (ya * tana + yb * tanb + (xa - xb) * tana * tanb) / (tana + tanb)
end sub
private sub cmd_返回選題介面_click()
"選題介面", acnormalacnormal
acform, "測角交會"
end sub
private sub cmd_計算_click()
dim xa as double, ya as double, xb as double, yb as double, jda as double, jdb as double
if isnull( or isnull( or isnull( or isnull( then
msgbox "請輸入完整的座標資料！！！", vbokcancel + vbinformation, "提示"
end if
if isnull( or isnull( then
msgbox "請輸入完整的觀測角度資料！！！", vbokcancel + vbinformation, "提示"
end if
xa = ya =
xb = yb =
jda = jdb =
if (xb - xa) = 0 and (yb - ya) = 0 then
msgbox "您選擇的是同乙個點！", vbokonly + vbexclamation, "提示資訊"
else
call jdjsdddzb(xa, ya, xb, yb, jda, jdb)
= format(ddd_x, "0.000")
= format(ddd_y, "0.000")
end if
end sub
private sub cmd_資料清空_click()
= "": = ""
= "": = ""
= "": = ""
= "": = ""
end sub
private sub form_load()
= "": = ""
= "": = ""
= "": = ""
= "": = ""
end sub
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