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safeng1122 2013-04-08 13:08

绝对随机网点分布(excel之vba)

想学习的请研究下,直接给程序就没意思了,由于公司想做一套导光板的模具,没有现成的软件可用,就自己做了较简单的程序,虽然简单,但基本功能已经满足了导光板网点设计的要求;具备功能:任意多边形区域;含有光轴,且可以根据光源调整;网点密度可沿光轴方向调整,效果图如下: -aV!ZODt  
'=V!Y$tn  
[attachment=47680] Pw :{  
safeng1122 2013-04-08 13:15
关键点说几个: "J_#6q*  
1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) 5j{jbo =!  
2.需要定义光轴的方向;简便的方法就是指定光源坐标,及网点区域坐标,这样光轴就确定了 <aPbKDF~V  
3.网点区域密度可调;把区域分成若干小块,每块的密度不同即可 P\nz;}nv  
safeng1122 2013-04-08 13:19
以下是几个重要的函数: L T2UY*  
1.判断点在区域中函数 !,0%ZG}]7  
2.计算夹角函数 e*Gt%'  
3.转置函数 vUNmN2pRJ  
4.得到区域中心点,及区域半径函数 ->rr4xaKC  
5.再有就是若干个点抽取其中一部分;或者采用随机分布(该方法会有重合点,所以没采用) /E32^o|,>  
6.文件开启与关闭,这个最常见了,就不说了
safeng1122 2013-04-08 13:21
'计算夹角函数 ?r}'0dW  
Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single 7%0V?+]P  
   cax = x2 - x1 %p(!7FDE2n  
   cay = y2 - y1 n{1;BW#H  
   cbx = x2 - x3 ih[!v"bv  
   cby = y2 - y3 Mnx')([;W  
   mo_jj = cax * cbx + cay * cby  L#>^R   
   mo_ca = Sqr(cax * cax + cay * cay) )zK6>-KWA  
   mo_cb = Sqr(cbx * cbx + cby * cby) i*\\j1mf  
   cos_acb = mo_jj / (mo_ca * mo_cb) R2` -*PZ_  
   'ff_cos = cos_acb `({ Bi!%i  
   If cos_acb >= 1 Then A{IJ](5.kd  
   nn = 0 =U- w!uW  
   ElseIf cos_acb <= -1 Then ~A-vIlGt!  
   nn = 3.14159265258979 I%Yeq"5RB  
   Else 5nA *'($j  
   nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) v&]k8Hc-  
   End If Gp.XTz#=  
   'ff_angle = nn ~B704i  
   ff_angle = nn * 180 / 3.14159265258979 mFa%d8Y  
End Function
safeng1122 2013-04-08 13:21
'判断点在区域内函数 \YZ7  
Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean 9!u&8#i  
Dim aob, boc, cod, doa, sum As Single # ^q87y  
  If ppx = p1x And ppy = p1y Then x Rp;y*  
     point_in = True /T\'&s3D+  
     Exit Function R<eD)+  
  End If N\nxo0sl  
  If ppx = p2x And ppy = p2y Then CUI\:a-   
     point_in = True xJ(}?0h-X  
     Exit Function XN Gw@$  
  End If _B6W:k|-7l  
   If ppx = p3x And ppy = p3y Then DN0`vl{*  
     point_in = True (/;<K$u*h  
     Exit Function NSV;R~"  
  End If Tfow_t}\  
     7ZR0cJw;  
    aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) VsjE*AJpe  
    boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) EU,f;H  
    cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 0vjlSHS;`.  
    doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) lq_(au.  
    sum = aob + boc + cod + doa AL{r/h  
    If 360.01 > sum And sum > 359.99 Then 5oTj^W8M(  
       point_in = True d #vo)>  
    Else AQU^7O  
       point_in = False <oKoz0!  
    End If ~bnyk%S o  
End Function
safeng1122 2013-04-08 13:23
'得到点半径,得到交点坐标函数 kes GwMr"e  
Function rr(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single) As Single() 7 /7,55  
    '求得中心点坐标 7) zF8V  
Dim tt As String # KgDOCQH  
Dim rt(3) As Single ?K!^[aO}=  
    '判断是否平行 Bbj%RF2,  
   acx = p3x - p1x w'Vm'zo  
   acy = p3y - p1y ,>Yl(=&  
   bdx = p4x - p2x 2AdO   
   bdy = p4y - p2y 3`+Bq+  
   If acx * bdy = acy * bdx Then uN*Ynf(:-  
      rt(0) = 0 L} Rsg'U  
      Exit Function vhE^jS<Tg  
   Else u5O`|I@R  
      '判断斜率存在否 f=T-4Of  
      If p1x = p3x And p2x <> p4x Then h#~\-j9>  
         tt = "ac_n_bd_y" 4T??8J-J  
      ElseIf p1x <> p3x And p2x = p4x Then h6;vOd~%  
         tt = "ac_y_bd_n" d9Uv/VGp  
      ElseIf p1x <> p3x And p2x <> p4x Then X6-;vnlKN  
         tt = "ac_y_bd_y" #<o=W#[  
      End If aESlb H  
    Select Case tt qx f8f  
         Case "ac_n_bd_y" k}hTSL  
            'bd线段方程 mzm{p(.  
            k_bd = bdy / bdx 4r tNvf5`  
            b_bd = p2y - k_bd * p2x _L% =Q ulu  
            p_x = p1x {g7~e {2  
            p_y = k_bd * p_x + b_bd t$EL3U/(  
         Case "ac_y_bd_n" iPCDxDLN3V  
            'ac线段方程 ep)O|_=  
            k_ac = acy / acx H#:Aby-d}  
            b_ac = p1y - k_ac * p1x JuD&121N*  
            p_x = p2x ]S+KH \2  
            p_y = k_ac * p_x + b_ac 9$s~ `z)  
        Case "ac_y_bd_y" wB+X@AA  
           'ac,bd线段都要求 zFm:=,9  
           k_ac = acy / acx rGm xK|R  
           b_ac = p1y - k_ac * p1x  wzf  
           k_bd = bdy / bdx wO&+Bb\=  
           b_bd = p2y - k_bd * p2x K:q|M?_  
           p_x = -(b_bd - b_ac) / (k_bd - k_ac) &HB!6T/  
           p_y = k_ac * p_x + b_ac 5*\]F}  
        End Select 3,^.  
      rt(1) = p_x a98J_^n  
      rt(2) = p_y FSD~Q&9&  
     bc]SY =  
'计算最大半径 gaWJzK Yc_  
   rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) _V,bvHWlM  
   rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) _^@>I8ix  
   rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) 3W3)%[ 5  
   rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) @ MKf$O4K  
Dim bb(5) As Single tLzb*U8'1w  
  bb(1) = rr1 U W' @3#<?  
  bb(2) = rr2 srK9B0I  
  bb(3) = rr3 ^i!I0Q2yd  
  bb(4) = rr4 a`6R}|ZB  
  nb = rr1 ,FL*Z9wA  
For i = 1 To 4 ;5tQV%V^Q  
    If nb <= bb(i) Then +'9E4Lpx  
       nb = bb(i) .~,=?aq^  
    End If Sb.%B^O  
Next i yrG=2{I  
    rt(0) = Sqr(nb) ZVz`g]  
    rr = rt() 5S 4 Bz  
  End If g4^3H3Pd  
         Jd28/X5&  
End Function
lifei0715 2013-04-08 19:15
高手啊.人才啊.
safeng1122 2013-04-09 10:40
lifei0715:高手啊.人才啊. (2013-04-08 19:15)  %+oqAY m+s  
KNjU!Z/4  
有热压工艺方面的人才或者资料分享下; x/ix%!8J  
我公司主要做透镜类产品,现在有客户要审核我公司的导光膜工艺,头疼 VIg6'  
windcgp86 2013-04-10 21:08
高手真多!
allansweruni 2013-04-11 15:16
楼主威武霸气.
safeng1122 2013-04-12 10:48
推荐大家多学习excel ,尤其是vba zUq(bD  
真的可以方便做很多事情 Dt\rrN:v  
有人就告诉我,高管几乎都是玩excel很溜
townyee 2013-04-13 23:10
学习了,楼主高手~~~~
lengye 2013-04-15 14:48
用VB写的程序???
safeng1122 2013-04-15 16:57
算是VB;excel vba 0 \V)DV.i  
vb会的应该都能看懂
llanshan 2013-05-07 13:56
來參考看看~~呼呼 t N4-<6  
jian0792 2013-05-08 14:02
真是不简单,学习一下
safeng1122 2013-06-28 14:12
同学们可以下载演示了
safeng1122 2013-06-28 14:30
16楼有下载链接了 x6*y$D^B  
有需要的的请联系我
renu 2013-07-01 14:41
可以学习学习!
llanshan 2013-08-29 11:41
真的是高手,但是我只是使用者, <sw=:HU  
不會寫程式,有困難,而且若是直徑大小變化的話, 5SZa, +]  
程式就不一樣了?
raygenjang 2014-07-06 13:19
  wokanyixia
011king 2014-07-07 10:38
高手,不过我是看不懂啦
ty_gdl 2014-07-26 23:28
高手  学习一下
zzh2118 2015-10-24 15:36
高手,软件怎么买呀
466010236 2016-04-19 10:58
高手,下来学习下
涛霸at你 2018-05-05 13:48
求大佬,帮忙写一份简单的网点分布的程序,我已经有了网点分布公式,我本身一点都不会编程,有偿。希望大佬可以帮我写一份
小板凳 2022-09-21 20:40
高手高手  俩会了 Hb::;[bm:  
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