MyFavMirrors/lc-core
1
0
Fork 0
mirror of https://github.com/librecaptcha/lc-core.git synced 2025-01-26 04:23:14 -05:00
Code Issues Packages Projects Releases Wiki Activity

filter challenge: adjust filter effect based on difficult level

Browse Source
This commit is contained in:
hrj 2022-04-02 23:18:46 +05:30
parent d797acdcac
commit b33dd8adcf
1 changed files with 11 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/main/scala/lc/captchas/FilterChallenge.scala
View File

@ -30,9 +30,10 @@ class FilterChallenge extends ChallengeProvider {
)
}
private val filterTypes = List(new FilterType1, new FilterType2)
def returnChallenge(level: String, size: String): Challenge = {
val mediumLevel = level == "medium"
val filterTypes = List(new FilterType1, new FilterType2)
val r = new scala.util.Random
val characters = if (mediumLevel) HelperFunctions.safeAlphaNum else HelperFunctions.safeCharacters
val n = if (mediumLevel) 5 else 7
@ -53,7 +54,7 @@ class FilterChallenge extends ChallengeProvider {
g.dispose()
var image = ImmutableImage.fromAwt(canvas)
val s = r.nextInt(2)
image = filterTypes(s).applyFilter(image)
image = filterTypes(s).applyFilter(image, !mediumLevel)
val img = image.awt()
val baos = new ByteArrayOutputStream()
PngImageWriter.write(baos, img);
@ -65,14 +66,15 @@ class FilterChallenge extends ChallengeProvider {
}
trait FilterType {
def applyFilter(image: ImmutableImage): ImmutableImage
def applyFilter(image: ImmutableImage, hardLevel: Boolean): ImmutableImage
}
class FilterType1 extends FilterType {
override def applyFilter(image: ImmutableImage): ImmutableImage = {
val blur = new GaussianBlurFilter(2)
override def applyFilter(image: ImmutableImage, hardLevel: Boolean): ImmutableImage = {
val radius = if (hardLevel) 3 else 2
val blur = new GaussianBlurFilter(radius)
val smear = new SmearFilter(com.sksamuel.scrimage.filter.SmearType.Circles, 10, 10, 10, 0, 1)
val diffuse = new DiffuseFilter(2)
val diffuse = new DiffuseFilter(radius.toFloat)
blur.apply(image)
diffuse.apply(image)
smear.apply(image)
@ -81,9 +83,10 @@ class FilterType1 extends FilterType {
}
class FilterType2 extends FilterType {
override def applyFilter(image: ImmutableImage): ImmutableImage = {
override def applyFilter(image: ImmutableImage, hardLevel: Boolean): ImmutableImage = {
val radius = if (hardLevel) 2f else 1f
val smear = new SmearFilter(com.sksamuel.scrimage.filter.SmearType.Circles, 10, 10, 10, 0, 1)
val diffuse = new DiffuseFilter(1)
val diffuse = new DiffuseFilter(radius)
val ripple = new RippleFilter(com.sksamuel.scrimage.filter.RippleType.Noise, 1, 1, 0.005.toFloat, 0.005.toFloat)
diffuse.apply(image)
ripple.apply(image)