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rain drops captcha tweaks

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This commit is contained in:
hrj 2019-04-01 18:32:56 +05:30
parent a207b9dee6
commit 1d3573c59f
1 changed files with 15 additions and 15 deletions
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30
src/main/scala/lc/RainDropsCaptcha.scala
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@ -17,16 +17,16 @@ class Drop {
var color = 0 var color = 0
var colorChange = 10 var colorChange = 10
def mkColor = { def mkColor = {
new Color(color, color, 200) new Color(color, color, math.min(200, color+100))
} }
} }
class RainDropsCP extends ChallengeProvider { class RainDropsCP extends ChallengeProvider {
private val alphabet = "abcdefghijklmnopqrstuvwxyz" private val alphabet = "abcdefghijklmnopqrstuvwxyz"
private val n = 6 private val n = 6
private val bgColor = new Color(245, 245, 245) private val bgColor = new Color(200, 200, 200)
private val textColor = new Color(248, 248, 248) private val textColor = new Color(208, 208, 218)
private val textHighlightColor = new Color(208, 208, 255) private val textHighlightColor = new Color(100, 100, 125)
def getId = "FilterChallenge" def getId = "FilterChallenge"
@ -42,13 +42,12 @@ class RainDropsCP extends ChallengeProvider {
def returnChallenge(): Challenge = { def returnChallenge(): Challenge = {
val r = new scala.util.Random val r = new scala.util.Random
val secret = Stream.continually(r.nextInt(alphabet.size)).map(alphabet).take(n).mkString val secret = Stream.continually(r.nextInt(alphabet.size)).map(alphabet).take(n).mkString
// val secret = "mmmmmm"
val width = 450 val width = 450
val height = 100 val height = 100
val imgType = BufferedImage.TYPE_INT_RGB val imgType = BufferedImage.TYPE_INT_RGB
val xOffset = 1+r.nextInt(2) val xOffset = 2+r.nextInt(3)
val xBias = (height / 10) - 2 val xBias = (height / 10) - 2
val dropsOrig = Array.fill[Drop](600)( new Drop()) val dropsOrig = Array.fill[Drop](2000)( new Drop())
for (d <- dropsOrig) { for (d <- dropsOrig) {
d.x = r.nextInt(width) - (xBias/2)*xOffset d.x = r.nextInt(width) - (xBias/2)*xOffset
d.yOffset = 6+r.nextInt(6) d.yOffset = 6+r.nextInt(6)
@ -58,7 +57,8 @@ class RainDropsCP extends ChallengeProvider {
d.colorChange *= -1 d.colorChange *= -1
} }
} }
val drops = dropsOrig ++ extendDrops(dropsOrig, 2, xOffset) ++ extendDrops(dropsOrig, 4, xOffset) val drops = dropsOrig ++ extendDrops(dropsOrig, 1, xOffset) ++ extendDrops(dropsOrig, 2, xOffset) ++ extendDrops(dropsOrig, 3, xOffset)
val baseFont = new Font(Font.MONOSPACED, Font.BOLD, 80) val baseFont = new Font(Font.MONOSPACED, Font.BOLD, 80)
val attributes = new java.util.HashMap[TextAttribute, Object]() val attributes = new java.util.HashMap[TextAttribute, Object]()
@ -69,8 +69,8 @@ class RainDropsCP extends ChallengeProvider {
val baos = new ByteArrayOutputStream(); val baos = new ByteArrayOutputStream();
val ios = new MemoryCacheImageOutputStream(baos); val ios = new MemoryCacheImageOutputStream(baos);
val writer = new GifSequenceWriter(ios, imgType, 60, true); val writer = new GifSequenceWriter(ios, imgType, 60, true);
for(i <- 0 until 30){ for(i <- 0 until 60){
val yOffset = 5+r.nextInt(5) // val yOffset = 5+r.nextInt(5)
val canvas = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB) val canvas = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB)
val g = canvas.createGraphics() val g = canvas.createGraphics()
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON) g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
@ -83,13 +83,13 @@ class RainDropsCP extends ChallengeProvider {
for (d <- drops) { for (d <- drops) {
g.setColor(d.mkColor) g.setColor(d.mkColor)
g.drawLine(d.x, d.y, d.x+xOffset, d.y+d.yOffset) g.drawLine(d.x, d.y, d.x+xOffset, d.y+d.yOffset)
d.x += xOffset d.x += xOffset/2
d.y += d.yOffset d.y += d.yOffset/2
d.color += d.colorChange d.color += d.colorChange
if (d.x > width+xOffset || d.y > height+d.yOffset) { if (d.x > width || d.y > height) {
val ySteps = 1 + height / d.yOffset val ySteps = (height / d.yOffset) + 1
d.x -= xOffset*ySteps d.x -= xOffset*ySteps
d.y -= yOffset*ySteps d.y -= d.yOffset*ySteps
} }
if (d.color > 200 || d.color < 21) { if (d.color > 200 || d.color < 21) {