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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: sN@=Ri?\  
rSNaflYAr  
[attachment=47680] `:fh$V5J>  
safeng1122 2013-04-08 13:15
关键点说几个: kD_616  
1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) Q>l5:2lq  
2.需要定义光轴的方向;简便的方法就是指定光源坐标,及网点区域坐标,这样光轴就确定了 k6^!G"  
3.网点区域密度可调;把区域分成若干小块,每块的密度不同即可 ,<]~/5-f  
safeng1122 2013-04-08 13:19
以下是几个重要的函数: O|Y~^:ny  
1.判断点在区域中函数 I_iXu;UX  
2.计算夹角函数 nT/Az g  
3.转置函数 oNIt<T  
4.得到区域中心点,及区域半径函数 o@DlK`  
5.再有就是若干个点抽取其中一部分;或者采用随机分布(该方法会有重合点,所以没采用) w8(z\G_0  
6.文件开启与关闭,这个最常见了,就不说了
safeng1122 2013-04-08 13:21
'计算夹角函数 !)LVZfQ0  
Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single 9wpV} .(  
   cax = x2 - x1 .v_-V?7  
   cay = y2 - y1 75*q^ui  
   cbx = x2 - x3 QK(w2`  
   cby = y2 - y3 oaM 3#QJ  
   mo_jj = cax * cbx + cay * cby L31#v$;4  
   mo_ca = Sqr(cax * cax + cay * cay) #;F*rJ[XY  
   mo_cb = Sqr(cbx * cbx + cby * cby) ,O 1/|Y  
   cos_acb = mo_jj / (mo_ca * mo_cb) L IRdWGQ4  
   'ff_cos = cos_acb ) 0|X];sD  
   If cos_acb >= 1 Then .5GGZfJ]  
   nn = 0 -=a,FDeR  
   ElseIf cos_acb <= -1 Then cxn*!TwDs  
   nn = 3.14159265258979 ! ^TCe8  
   Else roHJ$~q?  
   nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) H.*aVb$  
   End If XywsjeI4  
   'ff_angle = nn P,={ C6*  
   ff_angle = nn * 180 / 3.14159265258979 t-VU&.Y  
End Function
safeng1122 2013-04-08 13:21
'判断点在区域内函数 NRDXWscb  
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 ^/DP%^D  
Dim aob, boc, cod, doa, sum As Single p{oc}dWin  
  If ppx = p1x And ppy = p1y Then }C<$q  
     point_in = True 4~Jg\@  
     Exit Function USJk *  
  End If 2su/I  
  If ppx = p2x And ppy = p2y Then c^x5 E`{  
     point_in = True =RjseTS  
     Exit Function }ISc^W) t  
  End If 0artR~*}  
   If ppx = p3x And ppy = p3y Then eizni\  
     point_in = True s|9[=JMG  
     Exit Function \<W/Z.}/  
  End If W>y &  
     in#lpDa[  
    aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) BY`vs+]XY  
    boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) }}gtz-w  
    cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) s&F& *5W  
    doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) HJt@m &H|  
    sum = aob + boc + cod + doa x<\5Jrqt  
    If 360.01 > sum And sum > 359.99 Then [K""6D  
       point_in = True vX<^x2~9(  
    Else .njk^,N  
       point_in = False YWF Hv@  
    End If \t?rHB3"  
End Function
safeng1122 2013-04-08 13:23
'得到点半径,得到交点坐标函数 @!p0<&R@x  
Function rr(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single) As Single() AS/z1M_U  
    '求得中心点坐标 jhH&}d9  
Dim tt As String ky@ZEp=  
Dim rt(3) As Single JiFB<Q\  
    '判断是否平行 P`AW8Y6o  
   acx = p3x - p1x x,LY fy"0  
   acy = p3y - p1y 2"IDz01ne  
   bdx = p4x - p2x W?<<al*  
   bdy = p4y - p2y Y@ X>ejk"  
   If acx * bdy = acy * bdx Then #T++5G  
      rt(0) = 0 iCtS<"@Yx  
      Exit Function rr]-$]Q  
   Else t 09-y  
      '判断斜率存在否 TW-^C ;  
      If p1x = p3x And p2x <> p4x Then V@r V +s  
         tt = "ac_n_bd_y" bi[g4,`Z;  
      ElseIf p1x <> p3x And p2x = p4x Then ;$'D13  
         tt = "ac_y_bd_n" & X#6jTh+  
      ElseIf p1x <> p3x And p2x <> p4x Then ag6[Nk  
         tt = "ac_y_bd_y" cy0j>-z  
      End If Q!70D)O$  
    Select Case tt Q%x-BZb~  
         Case "ac_n_bd_y" $ D.*r*c6  
            'bd线段方程 .S*VYt%K7  
            k_bd = bdy / bdx 6G7+&g`  
            b_bd = p2y - k_bd * p2x `Gh J)WA<  
            p_x = p1x [xo-ZDIoG  
            p_y = k_bd * p_x + b_bd ){*9$486  
         Case "ac_y_bd_n" 'Lh nl3  
            'ac线段方程 .S[M: <<*  
            k_ac = acy / acx 4Q:r83#  
            b_ac = p1y - k_ac * p1x ~rlPS#]o  
            p_x = p2x S4VM(~,o  
            p_y = k_ac * p_x + b_ac = OzpI  
        Case "ac_y_bd_y" X}g"_wN,g>  
           'ac,bd线段都要求 X3'd~!a)  
           k_ac = acy / acx lC@wCgc  
           b_ac = p1y - k_ac * p1x *#83U?  
           k_bd = bdy / bdx Zs2;VW4RW  
           b_bd = p2y - k_bd * p2x Rk#p zD  
           p_x = -(b_bd - b_ac) / (k_bd - k_ac) X 4\V4_  
           p_y = k_ac * p_x + b_ac cCs@[D#O1  
        End Select u Au'2M,_  
      rt(1) = p_x eW;c 3<  
      rt(2) = p_y B]I*ymc#  
     SB,#y>Zv?  
'计算最大半径 \%_sL#?  
   rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) l ;S_J^S  
   rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) /0b7"Kr  
   rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) Q w)U  
   rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) ? (M$r\\  
Dim bb(5) As Single w|f@sB>j  
  bb(1) = rr1 W&HxMi  
  bb(2) = rr2 =R*IOJ  
  bb(3) = rr3 wb ^>/  
  bb(4) = rr4 U/ax`_  
  nb = rr1 mbHMy[R  
For i = 1 To 4 Z%JAX>v&B  
    If nb <= bb(i) Then 9M-W 1prb  
       nb = bb(i) 0-p %.}GE  
    End If q8MyEoc:n  
Next i `>=@Kc  
    rt(0) = Sqr(nb) r,q.RWuII  
    rr = rt() #vc!SI  
  End If H(kxRPH4@]  
         ~5>TMIDiuR  
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)  u95D0S  
"~KTLf  
有热压工艺方面的人才或者资料分享下; OGO\u#  
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 ?!.J 0q  
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 "U$](k.<VA  
真的可以方便做很多事情 ]f}(i D  
有人就告诉我,高管几乎都是玩excel很溜
townyee 2013-04-13 23:10
学习了,楼主高手~~~~
lengye 2013-04-15 14:48
用VB写的程序???
safeng1122 2013-04-15 16:57
算是VB;excel vba  ?$y/b}8  
vb会的应该都能看懂
llanshan 2013-05-07 13:56
來參考看看~~呼呼 /82E[P"}6R  
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 7|"$YV'DM  
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, `B,R+==G:  
不會寫程式,有困難,而且若是直徑大小變化的話, gvL*]U7  
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 Y]5MM:mI  
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