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    [分享]绝对随机网点分布(excel之vba) [复制链接]

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    离线safeng1122
     
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    只看楼主 倒序阅读 楼主  发表于: 2013-04-08
    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: ofc.zwH  
    WiNT;v[  
    p?(L'q"WK  
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    离线safeng1122
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    只看该作者 1楼 发表于: 2013-04-08
    关键点说几个: noVa=aU^  
    1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) ~d>%,?zz  
    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 Z%o7f6P0IX  
    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 4 k}e28  
    离线safeng1122
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    只看该作者 2楼 发表于: 2013-04-08
    以下是几个重要的函数: d{+(Lpj^  
    1.判断点在区域中函数 =6nD0i 9+  
    2.计算夹角函数 #mc!Wt 10  
    3.转置函数 }Ag|gF!_  
    4.得到区域中心点,及区域半径函数 HB& &  
    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) uK*|2U6t  
    6.文件开启与关闭,这个最常见了,就不说了
    离线safeng1122
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    只看该作者 3楼 发表于: 2013-04-08
    '计算夹角函数 kl7A^0Qrz  
    Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single DQ6jT@ZDH  
       cax = x2 - x1 66:ALFwd7  
       cay = y2 - y1 XF,<i1ZlM  
       cbx = x2 - x3 "e62/Ejg%  
       cby = y2 - y3 ] pPz@@xx  
       mo_jj = cax * cbx + cay * cby B!,yfTk]  
       mo_ca = Sqr(cax * cax + cay * cay) hb^!LtF#Y  
       mo_cb = Sqr(cbx * cbx + cby * cby) sOC&Q&eg  
       cos_acb = mo_jj / (mo_ca * mo_cb) L'kq>1QWf  
       'ff_cos = cos_acb QXQ  
       If cos_acb >= 1 Then bkQ3c-C<  
       nn = 0 7[o {9Yp&  
       ElseIf cos_acb <= -1 Then }C6@c1myq-  
       nn = 3.14159265258979 8OAg~mQ15(  
       Else ia{kab|_5  
       nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) :$H!@n*/R  
       End If `F1dyf!p<  
       'ff_angle = nn Aka^e\Y@6*  
       ff_angle = nn * 180 / 3.14159265258979 [8]m8=n  
    End Function
    离线safeng1122
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    只看该作者 4楼 发表于: 2013-04-08
    '判断点在区域内函数 `SOhG?Zo  
    Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean z+"0>ZN&  
    Dim aob, boc, cod, doa, sum As Single < 5ZJ]W  
      If ppx = p1x And ppy = p1y Then \3^Pjx  
         point_in = True epVH.u%  
         Exit Function -CU,z|g+  
      End If _T~H[&Hl  
      If ppx = p2x And ppy = p2y Then XZO<dhZX:  
         point_in = True #v8Cy|I  
         Exit Function (!n-Age  
      End If N$Hqa^!'T  
       If ppx = p3x And ppy = p3y Then `^%GN8d}nm  
         point_in = True 1g i}H)  
         Exit Function raQYn?[  
      End If >eo8  
         Ekf2NT  
        aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) bj.]o*u-  
        boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) \Da~p9 T&  
        cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) `u=<c  
        doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) %HEmi;  
        sum = aob + boc + cod + doa ? ).(fP  
        If 360.01 > sum And sum > 359.99 Then nHU3%%%cU  
           point_in = True z(UX't (q  
        Else :yD@5)  
           point_in = False A_Gp&acs$  
        End If Qa?Q bHc  
    End Function
    离线safeng1122
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    只看该作者 5楼 发表于: 2013-04-08
    '得到点半径,得到交点坐标函数 MZi8Fo'  
    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() j)@oRWL<  
        '求得中心点坐标 EEg O  
    Dim tt As String m2MPWy5s  
    Dim rt(3) As Single qid1b b  
        '判断是否平行 B#4S/d{/  
       acx = p3x - p1x |Kn^w4mN  
       acy = p3y - p1y Sh47c4{  
       bdx = p4x - p2x h=mv9=x  
       bdy = p4y - p2y %w%zv2d  
       If acx * bdy = acy * bdx Then $YR{f[+L w  
          rt(0) = 0 Xa\]ua_  
          Exit Function Ot"(uW4$[  
       Else zN/Gy}  
          '判断斜率存在否 &:,fb]p  
          If p1x = p3x And p2x <> p4x Then ,XP@ pi  
             tt = "ac_n_bd_y" W.sD2f  
          ElseIf p1x <> p3x And p2x = p4x Then Jz2 q\42q  
             tt = "ac_y_bd_n" C890+(D~  
          ElseIf p1x <> p3x And p2x <> p4x Then QD6Z=>?S  
             tt = "ac_y_bd_y" M, Po54u  
          End If oPE.gn_$  
        Select Case tt GYTbeY  
             Case "ac_n_bd_y" CTh1;U20  
                'bd线段方程 n/:Z{  
                k_bd = bdy / bdx }8X:?S %  
                b_bd = p2y - k_bd * p2x uof0Oc.  
                p_x = p1x JCBnFrP  
                p_y = k_bd * p_x + b_bd 9Z}S]-u/  
             Case "ac_y_bd_n" r]Z.`}Kkm  
                'ac线段方程 ]dQZ8yVK  
                k_ac = acy / acx RH1U_gp4 ]  
                b_ac = p1y - k_ac * p1x 1W4H-/Re  
                p_x = p2x sV;qpDXX  
                p_y = k_ac * p_x + b_ac !vi4* @:  
            Case "ac_y_bd_y" ~MD><w>  
               'ac,bd线段都要求 ;2 \<M 6  
               k_ac = acy / acx iNMLYYq]l  
               b_ac = p1y - k_ac * p1x H==X0  
               k_bd = bdy / bdx DDZTqsws  
               b_bd = p2y - k_bd * p2x $::51#^Wg  
               p_x = -(b_bd - b_ac) / (k_bd - k_ac) }:tAKO=+  
               p_y = k_ac * p_x + b_ac FkLQBpp(x  
            End Select :  ,|=Q}  
          rt(1) = p_x _LLW{^V  
          rt(2) = p_y ggzAU6J  
         P[r}(@0rJ  
    '计算最大半径 !$4Q]@ }  
       rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) pPU2ar  
       rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) 30:HRF(:  
       rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) t4*aVHT  
       rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) ..sJtA8  
    Dim bb(5) As Single F\I5fNs@  
      bb(1) = rr1 iFXUKGiV  
      bb(2) = rr2 =2Pz$q*ub  
      bb(3) = rr3 75' Ua$  
      bb(4) = rr4 BNF++<s  
      nb = rr1 YeR7*[l  
    For i = 1 To 4 Iht mD@H}  
        If nb <= bb(i) Then m3x!*9h  
           nb = bb(i) |8b$x| B  
        End If xow6@M,  
    Next i %l0_PhAB  
        rt(0) = Sqr(nb) fLf#2EA  
        rr = rt() EVby 9!  
      End If @*AYm-k  
             + ;{rU&  
    End Function
    离线lifei0715
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    只看该作者 6楼 发表于: 2013-04-08
    高手啊.人才啊.
    离线safeng1122
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    只看该作者 7楼 发表于: 2013-04-09
    回 lifei0715 的帖子
    lifei0715:高手啊.人才啊. (2013-04-08 19:15)  t,r&SrC  
    p.W*j^';Q  
    有热压工艺方面的人才或者资料分享下; osgS?=8  
    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 _|5FrN  
    离线windcgp86
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    只看该作者 8楼 发表于: 2013-04-10
    高手真多!
    离线allansweruni
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    只看该作者 9楼 发表于: 2013-04-11
    楼主威武霸气.