切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 9649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: PuXUuJx(  
    0oU=RbC  
    ksWSMxm  
     
    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: >UHa  
    1.区域是由点围成的,所以EXCEL中需要定义点的坐标(区域) ,EEPh>cXc  
    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 o a<q/  
    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 M>l^%`  
    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: $.K?N@(W  
    1.判断点在区域中函数 GsV4ZZ  
    2.计算夹角函数 c3xl9S,5  
    3.转置函数 Hs0pW5oZ  
    4.得到区域中心点,及区域半径函数 BC/_:n8O  
    5.再有就是若干个点抽取其中一部分;或者采用随机分布(该方法会有重合点,所以没采用) 1n%8j*bJq  
    6.文件开启与关闭,这个最常见了,就不说了
    离线safeng1122
    发帖
    286
    光币
    26
    光券
    0
    只看该作者 3楼 发表于: 2013-04-08
    '计算夹角函数 &M"ouy Zo9  
    Function ff_angle(x1 As Single, y1 As Single, x2 As Single, y2 As Single, x3 As Single, y3 As Single) As Single -{g~TUz  
       cax = x2 - x1 F 3RB  
       cay = y2 - y1 cT'w=  
       cbx = x2 - x3 P-Su5F  
       cby = y2 - y3 E{Vo'!LY  
       mo_jj = cax * cbx + cay * cby SUdm 0y  
       mo_ca = Sqr(cax * cax + cay * cay) faJM^u  
       mo_cb = Sqr(cbx * cbx + cby * cby) RtV.d \  
       cos_acb = mo_jj / (mo_ca * mo_cb) %:u[MBe,  
       'ff_cos = cos_acb m( 47s  
       If cos_acb >= 1 Then "mIgs9l$  
       nn = 0 R>)MiHcCg  
       ElseIf cos_acb <= -1 Then hWEnn=BW  
       nn = 3.14159265258979 h)x_zZ%>o  
       Else 4%ZM:/  
       nn = Atn(-cos_acb / Sqr(-cos_acb * cos_acb + 1)) + 2 * Atn(1) Q/^A #l[  
       End If G=d(*+& B  
       'ff_angle = nn oXYMoi  
       ff_angle = nn * 180 / 3.14159265258979 | {P|.  
    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 q&si%  
    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 JdNF-64ky  
    Dim aob, boc, cod, doa, sum As Single ~!:0iFE&H  
      If ppx = p1x And ppy = p1y Then `rFAZcEj%  
         point_in = True hU {-a`  
         Exit Function 8 %Sb+w07  
      End If >)4YP*qIPb  
      If ppx = p2x And ppy = p2y Then +1`t}hO  
         point_in = True vv5i? F  
         Exit Function Jh@_9/?  
      End If t9 F=^)s  
       If ppx = p3x And ppy = p3y Then 'ZHdV,dd  
         point_in = True ST',4 Oph5  
         Exit Function ] |Zb\{  
      End If "^rNr_  
         H5xzD9K;/C  
        aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 3#GqmhqKDk  
        boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) sa#.l% #  
        cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) *e4TSqC|  
        doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) NoDZ5Z  
        sum = aob + boc + cod + doa aW;aA'!  
        If 360.01 > sum And sum > 359.99 Then E_:QSy5G  
           point_in = True f`P9ku#j}  
        Else \V%_hl  
           point_in = False 8tc*.H{^+  
        End If (xT*LF+  
    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 RQ' H!(K  
    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() .9M.|  
        '求得中心点坐标 IgX4.]W5  
    Dim tt As String '"xiS$b(  
    Dim rt(3) As Single =3'(A14C=  
        '判断是否平行 v'ay.oVzw  
       acx = p3x - p1x |nxdB&1n  
       acy = p3y - p1y ok0X<MR!I  
       bdx = p4x - p2x S@}4-\  
       bdy = p4y - p2y j\2[H^   
       If acx * bdy = acy * bdx Then 32>x^>G=>  
          rt(0) = 0 |E^|X!+9  
          Exit Function IN!02`H  
       Else vDE |sT  
          '判断斜率存在否 Ps>&"k$T  
          If p1x = p3x And p2x <> p4x Then Z^_>A)<s<  
             tt = "ac_n_bd_y" t4K56H.L?  
          ElseIf p1x <> p3x And p2x = p4x Then u-><}OVf~  
             tt = "ac_y_bd_n" Ci\? ^  
          ElseIf p1x <> p3x And p2x <> p4x Then k0ItG?Cv  
             tt = "ac_y_bd_y" bZ5n,KQA5  
          End If dgc&[  
        Select Case tt `XMM1y>V9>  
             Case "ac_n_bd_y" v\0^mp  
                'bd线段方程 @ss):FwA  
                k_bd = bdy / bdx pXW`+<g0  
                b_bd = p2y - k_bd * p2x ,2zKQ2z  
                p_x = p1x jnBC;I[:  
                p_y = k_bd * p_x + b_bd rc{o?U'^-  
             Case "ac_y_bd_n" +/N1_  
                'ac线段方程 z7=fDe -  
                k_ac = acy / acx 80&D""  
                b_ac = p1y - k_ac * p1x ,wK 1=7  
                p_x = p2x J/kH%_ >Ir  
                p_y = k_ac * p_x + b_ac o# {#r@,i  
            Case "ac_y_bd_y" I'InZ0J2  
               'ac,bd线段都要求 14l; *  
               k_ac = acy / acx 8 /m3+5  
               b_ac = p1y - k_ac * p1x HdCk!Fv  
               k_bd = bdy / bdx &?T${*~  
               b_bd = p2y - k_bd * p2x UrK"u{G  
               p_x = -(b_bd - b_ac) / (k_bd - k_ac) GOr}/y;  
               p_y = k_ac * p_x + b_ac K&S@F!#g  
            End Select rPTfpeqN)  
          rt(1) = p_x l l:jsm  
          rt(2) = p_y t9D S]Li  
         F#1kZ@nq  
    '计算最大半径 RKe?.  
       rr1 = (p1x - p_x) * (p1x - p_x) + (p1y - p_y) * (p1y - p_y) :ICr\FY$  
       rr2 = (p2x - p_x) * (p2x - p_x) + (p2y - p_y) * (p2y - p_y) >hb- 5xC  
       rr3 = (p3x - p_x) * (p3x - p_x) + (p3y - p_y) * (p3y - p_y) @ ;J|xkJ  
       rr4 = (p4x - p_x) * (p4x - p_x) + (p4y - p_y) * (p4y - p_y) wE2x:Ge:  
    Dim bb(5) As Single  -$R5  
      bb(1) = rr1 CWMlZ VG  
      bb(2) = rr2 viV-e$s`.  
      bb(3) = rr3 rWe 8D/oc  
      bb(4) = rr4 ]h8/M7k  
      nb = rr1 .tp=T  
    For i = 1 To 4 +Ag#B*   
        If nb <= bb(i) Then U_Y;fSl>  
           nb = bb(i) \e0x ,2  
        End If =,E'~P  
    Next i H%T3Pc  
        rt(0) = Sqr(nb) V8v,jS$l4  
        rr = rt() :BDviUC7Z  
      End If va+m9R0  
             8;.` {'r  
    End Function
    在线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)  rZb_1E<  
    U3(L.8(sA  
    有热压工艺方面的人才或者资料分享下; deHY8x5uI  
    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 o&*1U"6D  
    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.