首页 -> 登录 -> 注册 -> 回复主题 -> 发表主题
光行天下 -> 液晶显示,背光源模组技术与产业 -> 绝对随机网点分布(excel之vba) [点此返回论坛查看本帖完整版本] [打印本页]

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: H_7EK  
^9?IS<N0]  
[attachment=47680] m2PI^?|e  
safeng1122 2013-04-08 13:15
关键点说几个: b*"%E, ?  
1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) |jTRIMj%,_  
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 [#C(^J*@c  
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 @L5s.]vg=  
safeng1122 2013-04-08 13:19
以下是几个重要的函数: {3*Zx"e![  
1.判断点在区域中函数 59M\uVWR  
2.计算夹角函数 Y`!Zk$8  
3.转置函数 - 1tiy.^$F  
4.得到区域中心点,及区域半径函数 /}$D&KwYg  
5.再有就是若干个点抽取其中一部分;或者采用随机分布(该方法会有重合点,所以没采用) _tQR3I5  
6.文件开启与关闭,这个最常见了,就不说了
safeng1122 2013-04-08 13:21
'计算夹角函数 @PyZ u7'  
Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single xg_9#  
   cax = x2 - x1 {Z(kzJwN  
   cay = y2 - y1 jS| 9jg:  
   cbx = x2 - x3 X_2p C|C  
   cby = y2 - y3 e4(E!;Z!QF  
   mo_jj = cax * cbx + cay * cby jLv8K  
   mo_ca = Sqr(cax * cax + cay * cay) aLt2fB1)  
   mo_cb = Sqr(cbx * cbx + cby * cby) XMw*4j2E  
   cos_acb = mo_jj / (mo_ca * mo_cb) {E$smX  
   'ff_cos = cos_acb fy|$A@f  
   If cos_acb >= 1 Then gano>W0  
   nn = 0 swLrp 74  
   ElseIf cos_acb <= -1 Then yw+LT,AQ.  
   nn = 3.14159265258979 TnQ"c)ta  
   Else 8t >nL  
   nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) .*Ylj2nM  
   End If 8zzY;3^h;  
   'ff_angle = nn .I nDyKt  
   ff_angle = nn * 180 / 3.14159265258979 z6;6 o!ej  
End Function
safeng1122 2013-04-08 13:21
'判断点在区域内函数  6>&h9@  
Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean &Na,D7A:3I  
Dim aob, boc, cod, doa, sum As Single H[D<G9:  
  If ppx = p1x And ppy = p1y Then )4e?-?bK!  
     point_in = True T?HW=v_a  
     Exit Function )uu1AbT +e  
  End If ME.a * v  
  If ppx = p2x And ppy = p2y Then jcL%_of  
     point_in = True G_/Dz JBF  
     Exit Function rc`}QoB)R  
  End If 1V:I }~\  
   If ppx = p3x And ppy = p3y Then X)b@ia'"Wp  
     point_in = True z1S p'h$  
     Exit Function iR]K!j2  
  End If K$/&C:,Q  
     a|eHo%Qt  
    aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) wGg_ vAn  
    boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) V;29ieE!  
    cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) +o-jMvK9  
    doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 7m:ZG  
    sum = aob + boc + cod + doa dTZ$92<  
    If 360.01 > sum And sum > 359.99 Then 6W[~@~D=  
       point_in = True W.CbNou  
    Else a&RH_LjM  
       point_in = False 3t9Weo)  
    End If @|([b r|O  
End Function
safeng1122 2013-04-08 13:23
'得到点半径,得到交点坐标函数 ->L>`<7(  
Function rr(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single) As Single() Hg5 :>?Lw@  
    '求得中心点坐标 QTC!vKM  
Dim tt As String 5.d[C/pRw  
Dim rt(3) As Single y #zO1Nig`  
    '判断是否平行 "fu:hHq  
   acx = p3x - p1x 0p]v#z}  
   acy = p3y - p1y w)C5XX30;  
   bdx = p4x - p2x r4mz   
   bdy = p4y - p2y F.),|t$\  
   If acx * bdy = acy * bdx Then pZz\o  
      rt(0) = 0 bEm9hFvd  
      Exit Function AVi&cvhs  
   Else #MFIsx)r  
      '判断斜率存在否 ^!fY~(=U4  
      If p1x = p3x And p2x <> p4x Then &-Ylj  
         tt = "ac_n_bd_y" -}_1f[b  
      ElseIf p1x <> p3x And p2x = p4x Then JED\"(d(  
         tt = "ac_y_bd_n" Z@(KZ|  
      ElseIf p1x <> p3x And p2x <> p4x Then EpH_v`  
         tt = "ac_y_bd_y" $[UUf}7L   
      End If ;SIWWuk  
    Select Case tt _&%FGcAS  
         Case "ac_n_bd_y" Cxeam"-HTt  
            'bd线段方程 ;5DDV6  
            k_bd = bdy / bdx dXfLN<nD>U  
            b_bd = p2y - k_bd * p2x TV=K3F5)M  
            p_x = p1x "hi03k  
            p_y = k_bd * p_x + b_bd z]7/Gc,j  
         Case "ac_y_bd_n" Dxy^r*B  
            'ac线段方程 ?lML+  
            k_ac = acy / acx |az2vD6P  
            b_ac = p1y - k_ac * p1x v7 n@CWnN  
            p_x = p2x ,l Y4WO  
            p_y = k_ac * p_x + b_ac c?N,Cd~q  
        Case "ac_y_bd_y" Q':hmulT!  
           'ac,bd线段都要求 >n^780S|  
           k_ac = acy / acx tzthc*-<  
           b_ac = p1y - k_ac * p1x rr,w/[  
           k_bd = bdy / bdx xHMFYt+0$G  
           b_bd = p2y - k_bd * p2x [Q+k2J_h  
           p_x = -(b_bd - b_ac) / (k_bd - k_ac) ?~b(iZ  
           p_y = k_ac * p_x + b_ac cPv(VjS1;  
        End Select tva=DS  
      rt(1) = p_x A,BYi$  
      rt(2) = p_y K`2(Q  
     FgL892[  
'计算最大半径 =r*Ykd;W|E  
   rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) <z\`Ma  
   rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) \ 'Va(}v  
   rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y)  /y wP 0  
   rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) BM'!odRv  
Dim bb(5) As Single 8CZ%-}-%$  
  bb(1) = rr1 {`G d  
  bb(2) = rr2 U (#JC(E-#  
  bb(3) = rr3 5C&*PJ~WA  
  bb(4) = rr4 fbU3-L?  
  nb = rr1 uKXNzz  
For i = 1 To 4 1[T7;i$  
    If nb <= bb(i) Then *= ?|n   
       nb = bb(i) vENf3;o0  
    End If r0 )ne|&Hp  
Next i P:t .Nr"  
    rt(0) = Sqr(nb) l<BV{Gl  
    rr = rt() 3 ye  
  End If Rq%Kw > {&  
         ddyX+.LMk  
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)  12KC4,C&1i  
0(D^NtB7  
有热压工艺方面的人才或者资料分享下; uv27Vos  
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 ba);f[>  
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 [d6!  
真的可以方便做很多事情 XiE`_%NW  
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 $(aq;DR  
vb会的应该都能看懂
llanshan 2013-05-07 13:56
來參考看看~~呼呼 U]iI8c  
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 zM9#1^X  
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, pP. _%5  
不會寫程式,有困難,而且若是直徑大小變化的話, Mt[yY|Ec|  
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 ke4E 1T-1n  
查看本帖完整版本: [-- 绝对随机网点分布(excel之vba) --] [-- top --]

Copyright © 2005-2025 光行天下 蜀ICP备06003254号-1 网站统计