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const.go
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const.go
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package base64Captcha
const (
imageStringDpi = 72.0
//TxtNumbers chacters for numbers.
TxtNumbers = "012346789"
//TxtAlphabet characters for alphabet.
TxtAlphabet = "ABCDEFGHJKMNOQRSTUVXYZabcdefghjkmnoqrstuvxyz"
//TxtSimpleCharaters simple numbers and alphabet
TxtSimpleCharaters = "13467ertyiadfhjkxcvbnERTYADFGHJKXCVBN"
//MimeTypeCaptchaAudio output base64 mine-type.
MimeTypeCaptchaAudio = "audio/wav"
//MimeTypeCaptchaImage output base64 mine-type.
MimeTypeCaptchaImage = "image/png"
//FileExtCaptchaAudio output file extension.
FileExtCaptchaAudio = "wav"
//FileExtCaptchaImage output file extension.
FileExtCaptchaImage = "png"
)
const (
//CaptchaComplexLower complex level lower.
CaptchaComplexLower = iota
//CaptchaComplexMedium complex level medium.
CaptchaComplexMedium
//CaptchaComplexHigh complex level high.
CaptchaComplexHigh
)
const (
//CaptchaModeNumber mode number.
CaptchaModeNumber = iota
//CaptchaModeAlphabet mode alphabet.
CaptchaModeAlphabet
//CaptchaModeArithmetic mode arithmetic.
CaptchaModeArithmetic
//CaptchaModeNumberAlphabet mode mix number and alphabet,this is also default mode.
CaptchaModeNumberAlphabet
)
//GoTestOutputDir run go test command where the png and wav file output
var GoTestOutputDir = "/Users/ericzhou/go/src/github.com/mojocn/base64Captcha/goTestOutPutPng"
const (
// DefaultLen Default number of digits in captcha solution.
// 默认数字验证长度.
DefaultLen = 6
// MaxSkew max absolute skew factor of a single digit.
// 图像验证码的最大干扰洗漱.
MaxSkew = 0.7
// DotCount Number of background circles.
// 图像验证码干扰圆点的数量.
DotCount = 20
)
const (
digitFontWidth = 11
digitFontHeight = 18
digitFontBlackChar = 1
)