无组件验证码-GIF格式
来源：网络收集 责任编辑：栏目编辑 发表时间:2013-07-01 10:04 点击:次
| asp 验证码 ： <% Option Explicit ’ 显示声明 Class Com_GifCode_Class ’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’ ’ Author: Layen support@ssaw.net 84815733(QQ) ’ Thanks: Laomi, Laomiao, NetRube ’ 2006-01-02 ’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’ Public Noisy, Count, Width, Height, Angle, Offset, Border Private Graph(), Margin(3) Private Sub Class_Initialize() Randomize Noisy = 16 ’ 干扰点出现的概率 Count = 4 ’ 字符数量 Width = 80 ’ 图片宽度 Height = 20 ’ 图片高度 Angle = 2 ’ 角度随机变化量 Offset = 20 ’ 偏移随机变化量 Border = 1 ’ 边框大小 End Sub Public Function Create() Const cCharSet = "123456789" Dim i, x, y Dim vValidCode : vValidCode = "" Dim vIndex ReDim Graph(Width-1, Height-1) For i = 0 To Count - 1 vIndex = Int(Rnd * Len(cCharSet)) vValidCode = vValidCode + Mid(cCharSet, vIndex+1 , 1) SetDraw vIndex, i Next Create = vValidCode End Function Sub SetDot(pX, pY) If pX * (Width-pX-1) >= 0 And pY * (Height-pY-1) >= 0 Then Graph(pX, pY) = 1 End If End Sub Public Sub SetDraw(pIndex, pNumber) ’ 字符数据 Dim DotData(8) DotData(0) = Array(30, 15, 50, 1, 50, 100) DotData(1) = Array(1 ,34 ,30 ,1 ,71, 1, 100, 34, 1, 100, 93, 100, 100, 86) DotData(2) = Array(1, 1, 100, 1, 42, 42, 100, 70, 50, 100, 1, 70) DotData(3) = Array(100, 73, 6, 73, 75, 6, 75, 100) DotData(4) = Array(100, 1, 1, 1, 1, 50, 50, 35, 100, 55, 100, 80, 50, 100, 1, 95) DotData(5) = Array(100, 20, 70, 1, 20, 1, 1, 30, 1, 80, 30, 100, 70, 100, 100, 80, 100, 60, 70, 50, 30, 50, 1, 60) DotData(6) = Array(6, 26, 6, 6, 100, 6, 53, 100) DotData(7) = Array(100, 30, 100, 20, 70, 1, 30, 1, 1, 20, 1, 30, 100, 70, 100, 80, 70, 100, 30, 100, 1, 80, 1, 70, 100, 30) DotData(8) = Array(1, 80, 30, 100, 80, 100, 100, 70, 100, 20, 70, 1, 30, 1, 1, 20, 1, 40, 30, 50, 70, 50, 100, 40) Dim vExtent : vExtent = Width / Count Margin(0) = Border + vExtent * (Rnd * Offset) / 100 + Margin(1) Margin(1) = vExtent * (pNumber + 1) - Border - vExtent * (Rnd * Offset) / 100 Margin(2) = Border + Height * (Rnd * Offset) / 100 Margin(3) = Height - Border - Height * (Rnd * Offset) / 100 Dim vStartX, vEndX, vStartY, vEndY Dim vWidth, vHeight, vDX, vDY, vDeltaT Dim vAngle, vLength vWidth = Int(Margin(1) - Margin(0)) vHeight = Int(Margin(3) - Margin(2)) ’ 起始坐标 vStartX = Int((DotData(pIndex)(0)-1) * vWidth / 100) vStartY = Int((DotData(pIndex)(1)-1) * vHeight / 100) Dim i, j For i = 1 To UBound(DotData(pIndex), 1)/2 If DotData(pIndex)(2*i-2) <> 0 And DotData(pIndex)(2*i) <> 0 Then ’ 终点坐标 vEndX = (DotData(pIndex)(2*i)-1) * vWidth / 100 vEndY = (DotData(pIndex)(2*i+1)-1) * vHeight / 100 ’ 横向差距 vDX = vEndX - vStartX ’ 纵向差距 vDY = vEndY - vStartY ’ 倾斜角度 If vDX = 0 Then vAngle = Sgn(vDY) * 3.14/2 Else vAngle = Atn(vDY / vDX) End If ’ 两坐标距离 If Sin(vAngle) = 0 Then vLength = vDX Else vLength = vDY / Sin(vAngle) End If ’ 随机转动角度 vAngle = vAngle + (Rnd - 0.5) * 相关新闻>>最新推荐更多>>>
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