切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 9179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: JbC\l  
    [A..<[  
    6P*)rye  
     
    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: rDx],O _  
    1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) W &wDH  
    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 K<L%@[gi  
    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 W7[ S7kd  
    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: U}wq~fD  
    1.判断点在区域中函数 vzm4  
    2.计算夹角函数 VUv.Tx]Z[  
    3.转置函数 K<w5[E9V.  
    4.得到区域中心点,及区域半径函数 |AfQ_iT6c  
    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) ?.A/E?Oc  
    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 I64:-P[\  
    Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single nJ#@W b@  
       cax = x2 - x1 &q}@[ )V4  
       cay = y2 - y1 99>yaW  
       cbx = x2 - x3 ,h`D(,?X  
       cby = y2 - y3 nW%=k!''  
       mo_jj = cax * cbx + cay * cby U`p<lxRgQ  
       mo_ca = Sqr(cax * cax + cay * cay) >~>[}d;glw  
       mo_cb = Sqr(cbx * cbx + cby * cby) 2b,TkG8K  
       cos_acb = mo_jj / (mo_ca * mo_cb) %R"/`N9R,  
       'ff_cos = cos_acb *g41"Cl  
       If cos_acb >= 1 Then *3 8Y;{ 4  
       nn = 0 GO3YXO33  
       ElseIf cos_acb <= -1 Then a[cH@7W.#  
       nn = 3.14159265258979 ~JPzjE  
       Else \ g(#)f  
       nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) *K.7Zf0  
       End If y]Tn#4 ,/  
       'ff_angle = nn j2qfEvU  
       ff_angle = nn * 180 / 3.14159265258979 S|4/C  
    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 k$_]b0D{4  
    Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean L5uI31  
    Dim aob, boc, cod, doa, sum As Single esFL<T  
      If ppx = p1x And ppy = p1y Then &.4_4"l(  
         point_in = True Zs|sPatV<  
         Exit Function ',j-n$Z^=  
      End If , tj7'c$0  
      If ppx = p2x And ppy = p2y Then XJ?z{gXJ  
         point_in = True GZX!iT  
         Exit Function DkKD~  
      End If kDa#yN\  
       If ppx = p3x And ppy = p3y Then )II,HT-LY  
         point_in = True F|Ihq^q  
         Exit Function deY<+!  
      End If $*-L8An?  
         oXkhj,{y5  
        aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) [E7@W[xr  
        boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) FRk_xxe"K  
        cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) I>Yp=R  
        doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 97dI4 t<  
        sum = aob + boc + cod + doa += ~}PF  
        If 360.01 > sum And sum > 359.99 Then 94@!.11  
           point_in = True Hv*O9!cC  
        Else >G~;2K[  
           point_in = False io3'h:+9s  
        End If +0 |0X {v  
    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 H4Ek,m|c  
    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() 1*jm9])#  
        '求得中心点坐标 h--bN*}H2  
    Dim tt As String Sn&%epi  
    Dim rt(3) As Single nHjwT5Q+Q  
        '判断是否平行 ]NsaFDi\  
       acx = p3x - p1x B ;$8<  
       acy = p3y - p1y O 9)8a]  
       bdx = p4x - p2x $7YLU{0  
       bdy = p4y - p2y 7^=jv~>wP  
       If acx * bdy = acy * bdx Then R&xd ic!  
          rt(0) = 0 rzLl M  
          Exit Function \_bX2Lg  
       Else >.4Sx~VH2  
          '判断斜率存在否 +8I0.,'  
          If p1x = p3x And p2x <> p4x Then r |/9Dn%  
             tt = "ac_n_bd_y" h+(s/o?\  
          ElseIf p1x <> p3x And p2x = p4x Then blv6  
             tt = "ac_y_bd_n" ]:fHvx_?`7  
          ElseIf p1x <> p3x And p2x <> p4x Then D I[Ee?  
             tt = "ac_y_bd_y" 9t1_"{'N1  
          End If JH#+E04#  
        Select Case tt 9k&$bC+Q  
             Case "ac_n_bd_y" ]S ,GHPEN  
                'bd线段方程 ?]N&H90^5  
                k_bd = bdy / bdx ?VsZo6Z"  
                b_bd = p2y - k_bd * p2x 1| DI'e[X  
                p_x = p1x DmsloPB?_  
                p_y = k_bd * p_x + b_bd lUd,-  
             Case "ac_y_bd_n" |\t_I~de  
                'ac线段方程 pE N`&'4  
                k_ac = acy / acx 7F\g3^ z9`  
                b_ac = p1y - k_ac * p1x %BKTN@;7  
                p_x = p2x H'.eqZM  
                p_y = k_ac * p_x + b_ac [~wcHE  
            Case "ac_y_bd_y" &YNhKm@"  
               'ac,bd线段都要求 6:pN?|=6X  
               k_ac = acy / acx qcF{Kex"  
               b_ac = p1y - k_ac * p1x Xy +|D#b  
               k_bd = bdy / bdx mgWtjV 8  
               b_bd = p2y - k_bd * p2x }kDrUnBk  
               p_x = -(b_bd - b_ac) / (k_bd - k_ac) K<tg+(3  
               p_y = k_ac * p_x + b_ac Q23y.^W%c  
            End Select S\m]ze  
          rt(1) = p_x C2v7(  
          rt(2) = p_y j;.&+.  
         oP6G2@3P/  
    '计算最大半径 f9$q.a*  
       rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) J:a^''  
       rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) }s[/b"%y  
       rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) [>86i  
       rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) m/AN*` V  
    Dim bb(5) As Single OH w6#N$\  
      bb(1) = rr1 kn.z8%^(  
      bb(2) = rr2 &Is%I<'o  
      bb(3) = rr3 iVcBD0 q)  
      bb(4) = rr4 *#_jTwQe  
      nb = rr1 79DC]48M  
    For i = 1 To 4 nDvWOt  
        If nb <= bb(i) Then ; o\wSHc  
           nb = bb(i) W+E2({  
        End If AdNsY/Y(  
    Next i 8TZe=sD~cr  
        rt(0) = Sqr(nb)  ^8iy(  
        rr = rt() KVCS(oN  
      End If gNeCnf#Xa  
             uu>g(q?4II  
    End Function
    离线lifei0715
    发帖
    1224
    光币
    8236
    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)  yS?1JWUC>  
    FUDM aI  
    有热压工艺方面的人才或者资料分享下; T:si?7CR  
    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 eaI&DP  
    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.