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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: l%sp[uqcg  
WmT}t  
[attachment=47680] 2+T8Y,g  
safeng1122 2013-04-08 13:15
关键点说几个: ]wkSAi5z*  
1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) `nd#< w>  
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 68&6J's;  
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 <|KKv5[  
safeng1122 2013-04-08 13:19
以下是几个重要的函数: 2FZ 0c/[&  
1.判断点在区域中函数 yNhscAMNn  
2.计算夹角函数 `}k&HRn  
3.转置函数 q G :jnl  
4.得到区域中心点,及区域半径函数 / K_e;(Y_  
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) v@$evmA  
6.文件开启与关闭,这个最常见了,就不说了
safeng1122 2013-04-08 13:21
'计算夹角函数 V7B=+(xK  
Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single .R$+#_  
   cax = x2 - x1 APHtJoS  
   cay = y2 - y1 LH3N}J({  
   cbx = x2 - x3 ? RR Srr1  
   cby = y2 - y3 j,|1y5f  
   mo_jj = cax * cbx + cay * cby Wvut)T  
   mo_ca = Sqr(cax * cax + cay * cay) "W_jdE6v  
   mo_cb = Sqr(cbx * cbx + cby * cby) .WL\:{G8;  
   cos_acb = mo_jj / (mo_ca * mo_cb) =E{{/%u{{S  
   'ff_cos = cos_acb BDRYip[Sa  
   If cos_acb >= 1 Then -CU7u=*b  
   nn = 0 VQNYQqu`[  
   ElseIf cos_acb <= -1 Then a O"nD_7  
   nn = 3.14159265258979 j$|Yd=  
   Else L6[rvM|9_  
   nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) G!e}j @@  
   End If sl^s9kx;C$  
   'ff_angle = nn :"<B@Z  
   ff_angle = nn * 180 / 3.14159265258979 A1k&` |k   
End Function
safeng1122 2013-04-08 13:21
'判断点在区域内函数 uJ IRk$  
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 ~*' 8=D?)  
Dim aob, boc, cod, doa, sum As Single 9U}MXY0  
  If ppx = p1x And ppy = p1y Then Cdt,//xrz  
     point_in = True 7/D9n9F  
     Exit Function SQ^^1.V&/Y  
  End If (. quX@w"m  
  If ppx = p2x And ppy = p2y Then uhw5O9  
     point_in = True ~7ATt8T  
     Exit Function /SPAJHh  
  End If R@7GCj  
   If ppx = p3x And ppy = p3y Then 7uv/@(J"$  
     point_in = True 0'\FrG  
     Exit Function nIT^'  
  End If FQ9csUjpB  
     XD+cs.{5  
    aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) I?>-  
    boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) PFDWC3<  
    cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) w}bEufU+2  
    doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) W3o }.|]  
    sum = aob + boc + cod + doa U3_yEvZ  
    If 360.01 > sum And sum > 359.99 Then uG(~m_7Hx  
       point_in = True F"m}mf  
    Else $Va]vC8?  
       point_in = False B GEJiLH  
    End If ;GSFQ:m[  
End Function
safeng1122 2013-04-08 13:23
'得到点半径,得到交点坐标函数 P2 K>|r  
Function rr(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single) As Single() /_k hFw  
    '求得中心点坐标 /[0 /8f6  
Dim tt As String LHHDt<+B  
Dim rt(3) As Single X^ ^?}>t[  
    '判断是否平行 S)'q:`tZo  
   acx = p3x - p1x #o"HD6e  
   acy = p3y - p1y X,!OWz:[  
   bdx = p4x - p2x |{ /O)3  
   bdy = p4y - p2y  Sj{rvW  
   If acx * bdy = acy * bdx Then >e$^# \D  
      rt(0) = 0 &W!d}, ;  
      Exit Function l>5]Wd{/  
   Else qT<qu(V:  
      '判断斜率存在否 $NGtxZp  
      If p1x = p3x And p2x <> p4x Then l LD)i J1  
         tt = "ac_n_bd_y" ?;KJ (@Va  
      ElseIf p1x <> p3x And p2x = p4x Then SVs~,  
         tt = "ac_y_bd_n" =iK6/ y`  
      ElseIf p1x <> p3x And p2x <> p4x Then VrGb;L'[  
         tt = "ac_y_bd_y" KEVy%AP=*h  
      End If 0Li'a{n2  
    Select Case tt :AE;x&  
         Case "ac_n_bd_y" ?9r,Y;,H  
            'bd线段方程 }rMpp[  
            k_bd = bdy / bdx Q RmQ>  
            b_bd = p2y - k_bd * p2x }b ]y 0"  
            p_x = p1x iJaNP%N  
            p_y = k_bd * p_x + b_bd 9uq+Ve>  
         Case "ac_y_bd_n" tCCi|*P G  
            'ac线段方程  +SA<0l  
            k_ac = acy / acx 2wuW5H8w{  
            b_ac = p1y - k_ac * p1x u FYQ^  
            p_x = p2x 8.Own=G?  
            p_y = k_ac * p_x + b_ac zRJKIm  
        Case "ac_y_bd_y" p:Ld)U*  
           'ac,bd线段都要求 seV;f^-hR  
           k_ac = acy / acx RAuAIiQ  
           b_ac = p1y - k_ac * p1x Z Lio8  
           k_bd = bdy / bdx zm3MOH^a  
           b_bd = p2y - k_bd * p2x #2vG_B<M)  
           p_x = -(b_bd - b_ac) / (k_bd - k_ac) Oi%~8J>  
           p_y = k_ac * p_x + b_ac Y %D*O  
        End Select v^18o$=K",  
      rt(1) = p_x v/ 00L R  
      rt(2) = p_y !e\R;bYM  
     vb ^!(  
'计算最大半径 bb :|1D  
   rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) X$h~d8@r  
   rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) wZ3 vF)2s  
   rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) J!fc)h  
   rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) ; 7v7V  
Dim bb(5) As Single rIWN!@.J  
  bb(1) = rr1 -MW(={#   
  bb(2) = rr2 p$o&dQ=n[  
  bb(3) = rr3 =|V]8 tN  
  bb(4) = rr4 <QW1fE  
  nb = rr1 t?H;iBrpxd  
For i = 1 To 4 _DvPF~  
    If nb <= bb(i) Then <<zz*;RJJ  
       nb = bb(i) 8J?`_  
    End If V45Udwp ^  
Next i . N} }cJq  
    rt(0) = Sqr(nb) qjEWk."  
    rr = rt() Ho8.-QSG  
  End If V #\ZS{'J  
         [W\atmd"  
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)  zXU{p\;)\  
>MY.Fr#.m  
有热压工艺方面的人才或者资料分享下; Z3~*R7G8>  
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 tskODM0Zf  
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 TZyQOjUu  
真的可以方便做很多事情 `+;oo B  
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 J}KktD@!O  
vb会的应该都能看懂
llanshan 2013-05-07 13:56
來參考看看~~呼呼 =>%%]0  
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 jhM|gV&  
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, ovFfTP<3V  
不會寫程式,有困難,而且若是直徑大小變化的話, h1)\.F4G  
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 `mVH94{+I  
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