切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 9769阅读
    • 26回复

    [分享]绝对随机网点分布(excel之vba) [复制链接]

    上一主题 下一主题
    离线safeng1122
     
    发帖
    286
    光币
    26
    光券
    0
    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: oh0|2IrM  
    EZQ+HECpK  
    l~TIFmHkh%  
     
    分享到
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    只看该作者 1楼 发表于: 2013-04-08
    关键点说几个: 0$ 9;p zr  
    1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) W$Q)aA7  
    2.需要定义光轴的方向;简便的方法就是指定光源坐标,及网点区域坐标,这样光轴就确定了  Am%a4{b  
    3.网点区域密度可调;把区域分成若干小块,每块的密度不同即可 C1B3VG  
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    只看该作者 2楼 发表于: 2013-04-08
    以下是几个重要的函数: JlDDM %  
    1.判断点在区域中函数 {_toh/8)r  
    2.计算夹角函数 +V);'"L  
    3.转置函数 CziaxJ  
    4.得到区域中心点,及区域半径函数 R-A'v&=  
    5.再有就是若干个点抽取其中一部分;或者采用随机分布(该方法会有重合点,所以没采用) [zTYiNa  
    6.文件开启与关闭,这个最常见了,就不说了
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    只看该作者 3楼 发表于: 2013-04-08
    '计算夹角函数 UC+7-y,  
    Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single +)JNFy-  
       cax = x2 - x1 eN| HJ=  
       cay = y2 - y1 k99gjL`  
       cbx = x2 - x3 9!xD~(Kr  
       cby = y2 - y3 %eJ\d?nw  
       mo_jj = cax * cbx + cay * cby &J;H@d||  
       mo_ca = Sqr(cax * cax + cay * cay) J|"nwY}a9  
       mo_cb = Sqr(cbx * cbx + cby * cby) "ji$@b_\?  
       cos_acb = mo_jj / (mo_ca * mo_cb) UR/qVO?  
       'ff_cos = cos_acb x7KcO0F{  
       If cos_acb >= 1 Then Z(LxB$^l[  
       nn = 0 GcZM+c  
       ElseIf cos_acb <= -1 Then X"TUe>cM  
       nn = 3.14159265258979 VA=#0w  
       Else qu<B%v  
       nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) ~}$\B^z+  
       End If 9QC"Od9H  
       'ff_angle = nn O>SuZ>g+7  
       ff_angle = nn * 180 / 3.14159265258979 !c4)pMd  
    End Function
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    只看该作者 4楼 发表于: 2013-04-08
    '判断点在区域内函数 ){O1&|z-  
    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 (XbMrPKG  
    Dim aob, boc, cod, doa, sum As Single &*(n<5 wt  
      If ppx = p1x And ppy = p1y Then VD9 q5tt7  
         point_in = True CdBthOPX)  
         Exit Function 00`bL  
      End If CF3E]dt  
      If ppx = p2x And ppy = p2y Then j<l#qho{h  
         point_in = True 0NL :z1N-h  
         Exit Function hi;WFyJTu  
      End If E/wQ+rv  
       If ppx = p3x And ppy = p3y Then ERp:EZ'  
         point_in = True E1c>nrnh*  
         Exit Function u;+%Qh  
      End If ee&nU(pK  
         ur/Oc24i1n  
        aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 6-*~ t8  
        boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 0M#N=%31  
        cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) :kWZSN8.D  
        doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) vQ:x% =]  
        sum = aob + boc + cod + doa eZ!yPdgy|  
        If 360.01 > sum And sum > 359.99 Then U9<_6Bsd  
           point_in = True +Fk4{p  
        Else F3r S6_  
           point_in = False I6K7!+;2  
        End If I$aXnd6)  
    End Function
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    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 Z -pyFK\  
    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() >:.w7LQy/  
        '求得中心点坐标 c*.G]nRc  
    Dim tt As String IM[54_I  
    Dim rt(3) As Single $|Q".dD  
        '判断是否平行 F`fGz)Mk  
       acx = p3x - p1x 2#'rk'X,K  
       acy = p3y - p1y @b]VCv0*f%  
       bdx = p4x - p2x D4AEZgC F,  
       bdy = p4y - p2y !c\7  
       If acx * bdy = acy * bdx Then K{|w 43>D  
          rt(0) = 0 n)tU9@4Np  
          Exit Function |$M@09,F"  
       Else /r>IV`n{  
          '判断斜率存在否 kX igX-  
          If p1x = p3x And p2x <> p4x Then M,&tA1CH  
             tt = "ac_n_bd_y" grGhN q  
          ElseIf p1x <> p3x And p2x = p4x Then 0o;k?4aP.c  
             tt = "ac_y_bd_n" $X`bm*  
          ElseIf p1x <> p3x And p2x <> p4x Then _i-\mR_~  
             tt = "ac_y_bd_y" 1W*V2`0>  
          End If Z/xV\Ggx  
        Select Case tt (2: N;  
             Case "ac_n_bd_y" et@">D%;]  
                'bd线段方程 s;s0}Td_1  
                k_bd = bdy / bdx *:?QB8YJ  
                b_bd = p2y - k_bd * p2x E yd$fcRK  
                p_x = p1x \$'R+k-57;  
                p_y = k_bd * p_x + b_bd S<V-ZV&_:U  
             Case "ac_y_bd_n" L?C\Q^0"`G  
                'ac线段方程 jh>N_cp  
                k_ac = acy / acx YFG-U-t3  
                b_ac = p1y - k_ac * p1x =ntft SH  
                p_x = p2x P_Z M'[  
                p_y = k_ac * p_x + b_ac a-fv[oB  
            Case "ac_y_bd_y" N A8 sN  
               'ac,bd线段都要求 0%/,>IR>r  
               k_ac = acy / acx wc"9A~  
               b_ac = p1y - k_ac * p1x j]AekI4I  
               k_bd = bdy / bdx  64SW  
               b_bd = p2y - k_bd * p2x ^#2xQ5h  
               p_x = -(b_bd - b_ac) / (k_bd - k_ac) '[%jjUU  
               p_y = k_ac * p_x + b_ac d60c$?"]a(  
            End Select 2v4W6R  
          rt(1) = p_x N5yJ'i~,M  
          rt(2) = p_y X|,["Az 8  
         FzVZs# O  
    '计算最大半径 z23#G>I&  
       rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) NJk)z&M  
       rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) ;r3}g"D@  
       rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) (9E( Q*J5x  
       rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) lHcA j{6  
    Dim bb(5) As Single >$Fp}?xX  
      bb(1) = rr1 f#1/}Hq/I  
      bb(2) = rr2 [8.-(-/;  
      bb(3) = rr3 V- /YNRV  
      bb(4) = rr4 DjY8nePyE  
      nb = rr1 ,}KwP*:Z  
    For i = 1 To 4 I,]J=xi  
        If nb <= bb(i) Then 7"#f!.E  
           nb = bb(i) ><cU7 ja[^  
        End If @`6}`k  
    Next i >G&^?5  
        rt(0) = Sqr(nb) +N7"EROc  
        rr = rt() ?HV}mS[t  
      End If oooS s&t  
             C\OECVT  
    End Function
    离线lifei0715
    发帖
    1236
    光币
    8439
    光券
    0
    只看该作者 6楼 发表于: 2013-04-08
    高手啊.人才啊.
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    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)  AG>\aV"b  
    yLqF ,pvO  
    有热压工艺方面的人才或者资料分享下; e2wvc/gG6  
    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 GW/WUzK  
    离线windcgp86
    发帖
    151
    光币
    39
    光券
    0
    只看该作者 8楼 发表于: 2013-04-10
    高手真多!
    离线allansweruni
    发帖
    100
    光币
    25
    光券
    0
    只看该作者 9楼 发表于: 2013-04-11
    楼主威武霸气.