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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: wbTw\b=  
I~,*Rgv/Z  
[attachment=47680] GI/o!0"_  
safeng1122 2013-04-08 13:15
关键点说几个: G 9;WO*  
1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) Ad(j&P  
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 y7JJ[:~~  
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 q4{ 6@q  
safeng1122 2013-04-08 13:19
以下是几个重要的函数: S[Et!gj:  
1.判断点在区域中函数 bTJ7RqL  
2.计算夹角函数 NeYj[Q~xy  
3.转置函数 &12.|  
4.得到区域中心点,及区域半径函数 -O\`G<s%  
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) YIfbcR5  
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 @>?&Mw\c  
Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single : 7'anj  
   cax = x2 - x1 -70Ut 4B  
   cay = y2 - y1 7+fFKZFKF  
   cbx = x2 - x3 |2Q;SaI^\  
   cby = y2 - y3 MOXDR  
   mo_jj = cax * cbx + cay * cby ,Ao8QN  
   mo_ca = Sqr(cax * cax + cay * cay) @AJt/wPk  
   mo_cb = Sqr(cbx * cbx + cby * cby) >354O6  
   cos_acb = mo_jj / (mo_ca * mo_cb)  1r$q $\  
   'ff_cos = cos_acb 3vx?x39*Y  
   If cos_acb >= 1 Then }JS?42CTaV  
   nn = 0 I<DS07K  
   ElseIf cos_acb <= -1 Then WlU5`NJl]2  
   nn = 3.14159265258979 <S<(wFE@4  
   Else $%LjIeVA5  
   nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) CQS34&G$a  
   End If Pt E>08  
   'ff_angle = nn )tB mSVprl  
   ff_angle = nn * 180 / 3.14159265258979 2|+**BxHD  
End Function
safeng1122 2013-04-08 13:21
'判断点在区域内函数 ~Os~pTo  
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 .hU ndg  
Dim aob, boc, cod, doa, sum As Single u>}k+8~  
  If ppx = p1x And ppy = p1y Then m8.sHw  
     point_in = True ^J?I-LG  
     Exit Function DJhi>!xJ  
  End If RV-7y^[]^  
  If ppx = p2x And ppy = p2y Then -3A#a_fu  
     point_in = True B+ +:7!  
     Exit Function |:C=j/f   
  End If ,u/GA<'#M  
   If ppx = p3x And ppy = p3y Then El ,p}Bi.  
     point_in = True D{~I  
     Exit Function WI ' ;e4  
  End If {2A/@$?  
     7i`8 c =.  
    aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) p3&w/K{L6w  
    boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) \f .ceh;!  
    cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) ZdfIe~Oni  
    doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) mJl|dk_c  
    sum = aob + boc + cod + doa ~]3y66 7  
    If 360.01 > sum And sum > 359.99 Then =JY9K0S~  
       point_in = True l:%4@t`  
    Else {'T=&`&OF  
       point_in = False b+,u_$@B  
    End If f3h^R20qmO  
End Function
safeng1122 2013-04-08 13:23
'得到点半径,得到交点坐标函数 ;vnG  
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() =otJf~  
    '求得中心点坐标 ?"\X46Gz;  
Dim tt As String yc?+L ;fN  
Dim rt(3) As Single {fmSmD  
    '判断是否平行 L'M'I0"/  
   acx = p3x - p1x )Z2HzjE  
   acy = p3y - p1y '(4$h3-gv7  
   bdx = p4x - p2x /Ii a>XY  
   bdy = p4y - p2y *H8(G%a!^  
   If acx * bdy = acy * bdx Then ^^1rjh1I  
      rt(0) = 0 r&U5w^p  
      Exit Function ?VmE bl  
   Else A@^Y2:pY  
      '判断斜率存在否 Ep)rEq6  
      If p1x = p3x And p2x <> p4x Then V*U{q%p(  
         tt = "ac_n_bd_y" eTw sh]  
      ElseIf p1x <> p3x And p2x = p4x Then kWZ?86!  
         tt = "ac_y_bd_n" 0rP`BK|  
      ElseIf p1x <> p3x And p2x <> p4x Then UsP1bh4  
         tt = "ac_y_bd_y"  !*5vXN  
      End If S3l$\X;6X  
    Select Case tt Hx5t![g2K!  
         Case "ac_n_bd_y" gTa6%GM>  
            'bd线段方程 Fg;V6s/>ts  
            k_bd = bdy / bdx 3Uw}!>`%  
            b_bd = p2y - k_bd * p2x b\& |030+  
            p_x = p1x D',[M)  
            p_y = k_bd * p_x + b_bd uY{V^c#mv  
         Case "ac_y_bd_n" U51C /A  
            'ac线段方程 /i.3v45t"  
            k_ac = acy / acx 8&+m5x S  
            b_ac = p1y - k_ac * p1x x=s=~cu4,  
            p_x = p2x OFH!z{*  
            p_y = k_ac * p_x + b_ac pu3ly&T#a_  
        Case "ac_y_bd_y" SFP%UfM<  
           'ac,bd线段都要求 f}qR'ognUu  
           k_ac = acy / acx {kVhht]X  
           b_ac = p1y - k_ac * p1x T$)N2]FE  
           k_bd = bdy / bdx \qk+cK;+  
           b_bd = p2y - k_bd * p2x x=]PE}<E  
           p_x = -(b_bd - b_ac) / (k_bd - k_ac) /a@gE^TM  
           p_y = k_ac * p_x + b_ac ) bRj'*  
        End Select  #4?Z|_j3  
      rt(1) = p_x fR]%:'2k  
      rt(2) = p_y vG;)(.:  
     C 0@tMB7  
'计算最大半径 gK7bP'S8H  
   rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) _ljdo`j#N  
   rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) 2g?O+'JD  
   rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) *%6NuZ  
   rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) />FgDIO  
Dim bb(5) As Single =GGt:3Kx-  
  bb(1) = rr1 :70n%3a  
  bb(2) = rr2 N3O~_=/v?  
  bb(3) = rr3 iPoh2  
  bb(4) = rr4 vMT:j  
  nb = rr1 ii,/omn:  
For i = 1 To 4 Wg\`!T  
    If nb <= bb(i) Then yhwwF n\  
       nb = bb(i) x.J% c[Q8  
    End If N i\*<:_  
Next i DSb/+8KT  
    rt(0) = Sqr(nb) UTT7a"  
    rr = rt() $;@L PE  
  End If b3$aPwv  
         e[`u:  
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)  .'+*>y!  
z?a<&`W  
有热压工艺方面的人才或者资料分享下; lP9XqQ(  
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 GQZLOjsop  
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 !>%U8A  
真的可以方便做很多事情 LdSBNg#3  
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 )+' De  
vb会的应该都能看懂
llanshan 2013-05-07 13:56
來參考看看~~呼呼 +Xb )bfN  
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 %s]l^RZ  
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, 1[QH68  
不會寫程式,有困難,而且若是直徑大小變化的話, MX3ss,F  
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 =rj5 q  
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