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filter challenge: adjust filter effect based on difficult level

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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
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19
src/main/scala/lc/captchas/FilterChallenge.scala
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@ -30,9 +30,10 @@ class FilterChallenge extends ChallengeProvider {
) )
} }
private val filterTypes = List(new FilterType1, new FilterType2)
def returnChallenge(level: String, size: String): Challenge = { def returnChallenge(level: String, size: String): Challenge = {
val mediumLevel = level == "medium" val mediumLevel = level == "medium"
val filterTypes = List(new FilterType1, new FilterType2)
val r = new scala.util.Random val r = new scala.util.Random
val characters = if (mediumLevel) HelperFunctions.safeAlphaNum else HelperFunctions.safeCharacters val characters = if (mediumLevel) HelperFunctions.safeAlphaNum else HelperFunctions.safeCharacters
val n = if (mediumLevel) 5 else 7 val n = if (mediumLevel) 5 else 7
@ -53,7 +54,7 @@ class FilterChallenge extends ChallengeProvider {
g.dispose() g.dispose()
var image = ImmutableImage.fromAwt(canvas) var image = ImmutableImage.fromAwt(canvas)
val s = r.nextInt(2) val s = r.nextInt(2)
image = filterTypes(s).applyFilter(image) image = filterTypes(s).applyFilter(image, !mediumLevel)
val img = image.awt() val img = image.awt()
val baos = new ByteArrayOutputStream() val baos = new ByteArrayOutputStream()
PngImageWriter.write(baos, img); PngImageWriter.write(baos, img);
@ -65,14 +66,15 @@ class FilterChallenge extends ChallengeProvider {
} }
trait FilterType { trait FilterType {
def applyFilter(image: ImmutableImage): ImmutableImage def applyFilter(image: ImmutableImage, hardLevel: Boolean): ImmutableImage
} }
class FilterType1 extends FilterType { class FilterType1 extends FilterType {
override def applyFilter(image: ImmutableImage): ImmutableImage = { override def applyFilter(image: ImmutableImage, hardLevel: Boolean): ImmutableImage = {
val blur = new GaussianBlurFilter(2) 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 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) blur.apply(image)
diffuse.apply(image) diffuse.apply(image)
smear.apply(image) smear.apply(image)
@ -81,9 +83,10 @@ class FilterType1 extends FilterType {
} }
class FilterType2 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 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) val ripple = new RippleFilter(com.sksamuel.scrimage.filter.RippleType.Noise, 1, 1, 0.005.toFloat, 0.005.toFloat)
diffuse.apply(image) diffuse.apply(image)
ripple.apply(image) ripple.apply(image)