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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: .)Se-'  
E"Xi  
[attachment=47680] LM _4.J  
safeng1122 2013-04-08 13:15
关键点说几个: &F#X0h/m=  
1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) 2 ;B[n;Q{  
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 3iWLo Qm  
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 ;T52 aX  
safeng1122 2013-04-08 13:19
以下是几个重要的函数: ijhMJ?3  
1.判断点在区域中函数 6}ax~wYct  
2.计算夹角函数 9 I RE@c  
3.转置函数 1*-58N*  
4.得到区域中心点,及区域半径函数 TU. h  
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) R4qk/@]t  
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 Nq~bO_-I  
Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single hcaH   
   cax = x2 - x1 98O z  
   cay = y2 - y1 jA]xpf6}  
   cbx = x2 - x3 4t8 Hy  
   cby = y2 - y3 L7xTAFe  
   mo_jj = cax * cbx + cay * cby 3]VTQl{P  
   mo_ca = Sqr(cax * cax + cay * cay) &FanD   
   mo_cb = Sqr(cbx * cbx + cby * cby) rz.`$b  
   cos_acb = mo_jj / (mo_ca * mo_cb) Z=H f OC  
   'ff_cos = cos_acb W4YC5ZH{l  
   If cos_acb >= 1 Then OQsH,'  
   nn = 0 xjX5PQu  
   ElseIf cos_acb <= -1 Then Aqm0|GlJ  
   nn = 3.14159265258979 er<~dqZ}]  
   Else be@MQ}6>  
   nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) o4Ba l^=[  
   End If k<f*ns  
   'ff_angle = nn Q%>,5(_V]  
   ff_angle = nn * 180 / 3.14159265258979 !{3pp  
End Function
safeng1122 2013-04-08 13:21
'判断点在区域内函数 eX$Biv1N  
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 `150$*K&B  
Dim aob, boc, cod, doa, sum As Single C'$U1%: j  
  If ppx = p1x And ppy = p1y Then r:o!w7C:a  
     point_in = True [lJ[kr*7  
     Exit Function EagI)W!s[  
  End If U--ER r8  
  If ppx = p2x And ppy = p2y Then RcE%?2l D  
     point_in = True  )Ob{]  
     Exit Function I'j? T.  
  End If l;C_A;y\  
   If ppx = p3x And ppy = p3y Then s6 ^JgdW  
     point_in = True K4tX4U[Z  
     Exit Function r9U1O@c  
  End If YJ0[ BcZ  
     ls5S9R 5  
    aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 8L@di  Y  
    boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) *5NffiA}-  
    cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) !`WuLhB`  
    doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) =osj}(  
    sum = aob + boc + cod + doa 8BN'fWl&E  
    If 360.01 > sum And sum > 359.99 Then AX)zSrXn  
       point_in = True WZr~Pb9  
    Else iOyYf!yg  
       point_in = False {xr]xcM'b  
    End If 0Nfj}sXCWE  
End Function
safeng1122 2013-04-08 13:23
'得到点半径,得到交点坐标函数 y/ FisX  
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() uu:)jxi  
    '求得中心点坐标 M Q6Y^,B  
Dim tt As String 'tbb"MEi4  
Dim rt(3) As Single RD4)NN6y5}  
    '判断是否平行 HT&0i,`  
   acx = p3x - p1x _pS%tPw  
   acy = p3y - p1y aI<~+]  
   bdx = p4x - p2x s*IfXv  
   bdy = p4y - p2y cNVdGY%&  
   If acx * bdy = acy * bdx Then 1 W0;YcT]  
      rt(0) = 0 H07j&  
      Exit Function %Z7!9+<  
   Else r)t^qhn  
      '判断斜率存在否 qj1z>,\  
      If p1x = p3x And p2x <> p4x Then &0g,Xkr  
         tt = "ac_n_bd_y" r>Ln*R,9D  
      ElseIf p1x <> p3x And p2x = p4x Then )>fi={!=c  
         tt = "ac_y_bd_n" pR"qPSv'  
      ElseIf p1x <> p3x And p2x <> p4x Then q :bKT#\  
         tt = "ac_y_bd_y" ZwMw g t  
      End If k mj m6  
    Select Case tt kslN_\   
         Case "ac_n_bd_y" QP#Wfk(C  
            'bd线段方程 9)">()8  
            k_bd = bdy / bdx }]I?vyQ#V  
            b_bd = p2y - k_bd * p2x ca =e_sg  
            p_x = p1x | 6>_L6t  
            p_y = k_bd * p_x + b_bd z'lNO| nU  
         Case "ac_y_bd_n" e@OA>  
            'ac线段方程 }>0 Kc=  
            k_ac = acy / acx K(gj6SrjV  
            b_ac = p1y - k_ac * p1x +]-KzDsr"V  
            p_x = p2x L|X5Ru  
            p_y = k_ac * p_x + b_ac Z=0W@_s  
        Case "ac_y_bd_y" R~~rqvLm  
           'ac,bd线段都要求 rg,63r  
           k_ac = acy / acx uNbA>*c4M  
           b_ac = p1y - k_ac * p1x [R4x[36Zp  
           k_bd = bdy / bdx 6<Z: Xw  
           b_bd = p2y - k_bd * p2x yjd'{B9{  
           p_x = -(b_bd - b_ac) / (k_bd - k_ac) 5F"?]'*/  
           p_y = k_ac * p_x + b_ac lQBM0|n  
        End Select 3ZlI$r(  
      rt(1) = p_x >A&@Wp1  
      rt(2) = p_y <^U(ya  
     G+uiZ (p>  
'计算最大半径 86#mmm)  
   rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) ZRB 0OH  
   rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) a[n$qPm}  
   rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) (x qA.(F  
   rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) bZ.N7X PH  
Dim bb(5) As Single ?Z>.G{Wm@  
  bb(1) = rr1 2HXKz7da  
  bb(2) = rr2 U$)Hhn|X  
  bb(3) = rr3 -kbm$~P  
  bb(4) = rr4 jJZsBOW[8  
  nb = rr1 n=? 0g;1!  
For i = 1 To 4 Jwd&[ O  
    If nb <= bb(i) Then ulf/C%t,R  
       nb = bb(i) R:<@+z^A[  
    End If xn@0pL3B~  
Next i E[.tQ|C  
    rt(0) = Sqr(nb) 8e!DDh  
    rr = rt() KC:4  
  End If i ,pN1_-  
         vt@Us\fI  
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)  sQ}%7BMK  
p x|>v8  
有热压工艺方面的人才或者资料分享下; ZP6x  
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 X#DL/#z k  
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 LgP>u?]n  
真的可以方便做很多事情 ^r>f2 x  
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 #9D/jYK1X  
vb会的应该都能看懂
llanshan 2013-05-07 13:56
來參考看看~~呼呼 'u(=eJ@1  
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 \UQ9MX _  
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, p-.Ri^p   
不會寫程式,有困難,而且若是直徑大小變化的話, ]?[zx'|  
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 l-<`m#/v  
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