update ascii art.

global/art.go

-package global
-
-import (
-	"bytes"
-	"fmt"
-	"golang.org/x/image/font"
-	"golang.org/x/image/font/basicfont"
-	"golang.org/x/image/math/fixed"
-	"image"
-	"image/color"
-	_ "image/jpeg"
-	_ "image/png"
-	"io"
-)
-
-// https://github.com/xrlin/AsciiArt
-
-func Convert(f io.Reader, chars []string, subWidth, subHeight int, imageSwitch bool, bgColor, penColor color.RGBA) (string, *image.NRGBA, error) {
-	var charsLength = len(chars)
-	if charsLength == 0 {
-		return "", nil, fmt.Errorf("no chars provided")
-	}
-	if subWidth == 0 || subHeight == 0 {
-		return "", nil, fmt.Errorf("subWidth and subHeight params is required")
-	}
-	m, _, err := image.Decode(f)
-	if err != nil {
-		return "", nil, err
-	}
-	imageWidth, imageHeight := m.Bounds().Max.X, m.Bounds().Max.Y
-	var img *image.NRGBA
-	if imageSwitch {
-		img = initImage(imageWidth, imageHeight, bgColor)
-	}
-	piecesX, piecesY := imageWidth/subWidth, imageHeight/subHeight
-	var buff bytes.Buffer
-	for y := 0; y < piecesY; y++ {
-		offsetY := y * subHeight
-		for x := 0; x < piecesX; x++ {
-			offsetX := x * subWidth
-			averageBrightness := calculateAverageBrightness(m, image.Rect(offsetX, offsetY, offsetX+subWidth, offsetY+subHeight))
-			char := getCharByBrightness(chars, averageBrightness)
-			buff.WriteString(char)
-			if img != nil {
-				addCharToImage(img, char, x*subWidth, y*subHeight, penColor)
-			}
-		}
-		buff.WriteString("\n")
-	}
-	return buff.String(), img, nil
-}
-
-func initImage(width, height int, bgColor color.RGBA) *image.NRGBA {
-	img := image.NewNRGBA(image.Rect(0, 0, width, height))
-	for x := 0; x < width; x++ {
-		for y := 0; y < height; y++ {
-			img.Set(x, y, bgColor)
-		}
-	}
-	return img
-}
-func calculateAverageBrightness(img image.Image, rect image.Rectangle) float64 {
-	var averageBrightness float64
-	width, height := rect.Max.X-rect.Min.X, rect.Max.Y-rect.Min.Y
-	var brightness float64
-	for x := rect.Min.X; x < rect.Max.X; x++ {
-		for y := rect.Min.Y; y < rect.Max.Y; y++ {
-			r, g, b, _ := img.At(x, y).RGBA()
-			brightness = float64(r>>8+g>>8+b>>8) / 3
-			averageBrightness += brightness
-		}
-	}
-	averageBrightness /= float64(width * height)
-	return averageBrightness
-}
-
-func getCharByBrightness(chars []string, brightness float64) string {
-	index := int(brightness*float64(len(chars))) >> 8
-	if index == len(chars) {
-		index--
-	}
-	return chars[len(chars)-index-1]
-}
-
-func addCharToImage(img *image.NRGBA, char string, x, y int, penColor color.RGBA) {
-	face := basicfont.Face7x13
-	point := fixed.Point26_6{X: fixed.Int26_6(x * 64), Y: fixed.Int26_6(y * 64)}
-	d := &font.Drawer{
-		Dst:  img,
-		Src:  image.NewUniform(penColor),
-		Face: face,
-		Dot:  point,
-	}
-	d.DrawString(char)
-}
-
-var Colors = map[string]color.RGBA{"black": {0, 0, 0, 255},
-	"gray":  {140, 140, 140, 255},
-	"red":   {255, 0, 0, 255},
-	"green": {0, 128, 0, 255},
-	"blue":  {0, 0, 255, 255}}

go.mod

@@ -3,7 +3,7 @@ module github.com/Mrs4s/go-cqhttp
 go 1.14
 
 require (
-	github.com/Mrs4s/MiraiGo v0.0.0-20200802003417-9cd1355853c7
+	github.com/Mrs4s/MiraiGo v0.0.0-20200802045511-04aad9705bdc
 	github.com/gin-gonic/gin v1.6.3
 	github.com/gorilla/websocket v1.4.2
 	github.com/guonaihong/gout v0.1.1
@@ -14,6 +14,7 @@ require (
 	github.com/t-tomalak/logrus-easy-formatter v0.0.0-20190827215021-c074f06c5816
 	github.com/tidwall/gjson v1.6.0
 	github.com/xujiajun/nutsdb v0.5.0
+	github.com/yinghau76/go-ascii-art v0.0.0-20190517192627-e7f465a30189
 	golang.org/x/image v0.0.0-20200618115811-c13761719519
 	golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa
 	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae // indirect

go.sum

 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/Mrs4s/MiraiGo v0.0.0-20200802003417-9cd1355853c7 h1:El3V+TFChR7AdfzMa8YqVIc/HX6lp5/4gwgMix9pz7w=
-github.com/Mrs4s/MiraiGo v0.0.0-20200802003417-9cd1355853c7/go.mod h1:M9wh1hjd0rie3+wm27tjPZkYMbD+MBV76CGqp2G7WSU=
+github.com/Mrs4s/MiraiGo v0.0.0-20200802045511-04aad9705bdc h1:mtPgcLy1VNr+nTA7vQibBYpYpFALJ+ChVkUwA8KNKfI=
+github.com/Mrs4s/MiraiGo v0.0.0-20200802045511-04aad9705bdc/go.mod h1:M9wh1hjd0rie3+wm27tjPZkYMbD+MBV76CGqp2G7WSU=
 github.com/bwmarrin/snowflake v0.3.0 h1:xm67bEhkKh6ij1790JB83OujPR5CzNe8QuQqAgISZN0=
 github.com/bwmarrin/snowflake v0.3.0/go.mod h1:NdZxfVWX+oR6y2K0o6qAYv6gIOP9rjG0/E9WsDpxqwE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -65,6 +65,8 @@ github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHX
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -97,9 +99,10 @@ github.com/xujiajun/nutsdb v0.5.0 h1:j/jM3Zw7Chg8WK7bAcKR0Xr7Mal47U1oJAMgySfDn9E
 github.com/xujiajun/nutsdb v0.5.0/go.mod h1:owdwN0tW084RxEodABLbO7h4Z2s9WiAjZGZFhRh0/1Q=
 github.com/xujiajun/utils v0.0.0-20190123093513-8bf096c4f53b h1:jKG9OiL4T4xQN3IUrhUpc1tG+HfDXppkgVcrAiiaI/0=
 github.com/xujiajun/utils v0.0.0-20190123093513-8bf096c4f53b/go.mod h1:AZd87GYJlUzl82Yab2kTjx1EyXSQCAfZDhpTo1SQC4k=
+github.com/yinghau76/go-ascii-art v0.0.0-20190517192627-e7f465a30189 h1:4UJw9if55Fu3HOwbfcaQlJ27p3oeJU2JZqoeT3ITJQk=
+github.com/yinghau76/go-ascii-art v0.0.0-20190517192627-e7f465a30189/go.mod h1:rIrm5geMiBhPQkdfUm8gDFi/WiHneOp1i9KjmJqc+9I=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/image v0.0.0-20200618115811-c13761719519 h1:1e2ufUJNM3lCHEY5jIgac/7UTjd6cgJNdatjPdFWf34=
 golang.org/x/image v0.0.0-20200618115811-c13761719519/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=

main.go

@@ -12,7 +12,8 @@ import (
 	rotatelogs "github.com/lestrrat-go/file-rotatelogs"
 	log "github.com/sirupsen/logrus"
 	easy "github.com/t-tomalak/logrus-easy-formatter"
-	"image/color"
+	asciiart "github.com/yinghau76/go-ascii-art"
+	"image"
 	"io"
 	"io/ioutil"
 	"os"
@@ -141,10 +142,9 @@ func main() {
 		if !rsp.Success {
 			switch rsp.Error {
 			case client.NeedCaptcha:
-				art, _, err := global.Convert(bytes.NewReader(rsp.CaptchaImage), []string{" ", "1", "i", ":", "*", "|", "."}, 1, 1, false, global.Colors["gray"], color.RGBA{})
-				global.Check(err)
-				fmt.Println(art)
-				log.Warn("请输入验证码.")
+				img, _, _ := image.Decode(bytes.NewReader(rsp.CaptchaImage))
+				fmt.Println(asciiart.New("image", img).Art)
+				log.Warn("请输入验证码： (回车提交)")
 				text, _ := console.ReadString('\n')
 				rsp, err = cli.SubmitCaptcha(strings.ReplaceAll(text, "\n", ""), rsp.CaptchaSign)
 				continue