1.asp
资源名称:wap.rar [点击查看]
上传用户:sking1122
上传日期:2020-09-24
资源大小:1005k
文件大小:5k
源码类别:
手机WAP编程
开发平台:
ASP/ASPX
- <%
- 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) * 2 * Angle * 3.14 * 2 / 100
- vDX = Int(Cos(vAngle) * vLength)
- vDY = Int(Sin(vAngle) * vLength)
- If Abs(vDX) > Abs(vDY) Then vDeltaT = Abs(vDX) Else vDeltaT = Abs(vDY)
- For j = 1 To vDeltaT
- SetDot Margin(0) + vStartX + j * vDX / vDeltaT, Margin(2) + vStartY + j * vDY / vDeltaT
- Next
- vStartX = vStartX + vDX
- vStartY = vStartY + vDY
- End If
- Next
- End Sub
- Public Sub Output()
- Response.Expires = -9999
- Response.AddHeader "pragma", "no-cache"
- Response.AddHeader "cache-ctrol", "no-cache"
- Response.ContentType = "image/gif"
- ' 文件类型
- Response.BinaryWrite ChrB(Asc("G")) & ChrB(Asc("I")) & ChrB(Asc("F"))
- ' 版本信息
- Response.BinaryWrite ChrB(Asc("8")) & ChrB(Asc("9")) & ChrB(Asc("a"))
- ' 逻辑屏幕宽度
- Response.BinaryWrite ChrB(Width Mod 256) & ChrB((Width 256) Mod 256)
- ' 逻辑屏幕高度
- Response.BinaryWrite ChrB(Height Mod 256) & ChrB((Height 256) Mod 256)
- Response.BinaryWrite ChrB(128) & ChrB(0) & ChrB(0)
- ' 全局颜色列表
- Response.BinaryWrite ChrB(255) & ChrB(255) & ChrB(255)
- Response.BinaryWrite ChrB(0) & ChrB(85) & ChrB(255)
- ' 图象标识符
- Response.BinaryWrite ChrB(Asc(","))
- Response.BinaryWrite ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)
- ' 图象宽度
- Response.BinaryWrite ChrB(Width Mod 256) & ChrB((Width 256) Mod 256)
- ' 图象高度
- Response.BinaryWrite ChrB(Height Mod 256) & ChrB((Height 256) Mod 256)
- Response.BinaryWrite ChrB(0) & ChrB(7) & ChrB(255)
- Dim x, y, i : i = 0
- For y = 0 To Height - 1
- For x = 0 To Width - 1
- If Rnd < Noisy / 100 Then
- Response.BinaryWrite ChrB(1-Graph(x, y))
- Else
- If x * (x-Width) = 0 Or y * (y-Height) = 0 Then
- Response.BinaryWrite ChrB(Graph(x, y))
- Else
- If Graph(x-1, y) = 1 Or Graph(x, y) Or Graph(x, y-1) = 1 Then
- Response.BinaryWrite ChrB(1)
- Else
- Response.BinaryWrite ChrB(0)
- End If
- End If
- End If
- If (y * Width + x + 1) Mod 126 = 0 Then
- Response.BinaryWrite ChrB(128)
- i = i + 1
- End If
- If (y * Width + x + i + 1) Mod 255 = 0 Then
- If (Width*Height - y * Width - x - 1) > 255 Then
- Response.BinaryWrite ChrB(255)
- Else
- Response.BinaryWrite ChrB(Width * Height Mod 255)
- End If
- End If
- Next
- Next
- Response.BinaryWrite ChrB(128) & ChrB(0) & ChrB(129) & ChrB(0) & ChrB(59)
- End Sub
- End Class
- Dim mCode
- Set mCode = New Com_GifCode_Class
- Session("GetCode") = mCode.Create()
- mCode.Output()
- Set mCode = Nothing
- %>