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Signed-off-by: Rahul Rudragoudar <rr83019@gmail.com>
This commit is contained in:
Rahul Rudragoudar 2021-04-20 03:07:35 +05:30
parent 3682b2cb7d
commit 8ea0652331
No known key found for this signature in database
GPG Key ID: 0D2CE231A7287EBC
1 changed files with 31 additions and 18 deletions
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27
src/main/java/lc/captchas/PoppingCharactersCaptcha.java
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@ -36,7 +36,8 @@ public class PoppingCharactersCaptcha implements ChallengeProvider {
advances.add(currX); advances.add(currX);
currX += font.getStringBounds(String.valueOf(c), frc).getWidth(); currX += font.getStringBounds(String.valueOf(c), frc).getWidth();
currX += spacing; currX += spacing;
}; }
;
graphics2D.dispose(); graphics2D.dispose();
return advances.toArray(new Integer[] {}); return advances.toArray(new Integer[] {});
} }
@ -45,7 +46,8 @@ public class PoppingCharactersCaptcha implements ChallengeProvider {
final var img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); final var img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
final var graphics2D = img.createGraphics(); final var graphics2D = img.createGraphics();
graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
graphics2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); graphics2D.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
graphics2D.setFont(font); graphics2D.setFont(font);
f.accept(graphics2D); f.accept(graphics2D);
graphics2D.dispose(); graphics2D.dispose();
@ -63,14 +65,25 @@ public class PoppingCharactersCaptcha implements ChallengeProvider {
final var writer = new GifSequenceWriter(output, 1, 900, true); final var writer = new GifSequenceWriter(output, 1, 900, true);
final var advances = computeOffsets(text); final var advances = computeOffsets(text);
final var prevColor = Color.getHSBColor(0f, 0f, 0.1f); final var prevColor = Color.getHSBColor(0f, 0f, 0.1f);
IntStream.range(0, text.length()).forEach(i -> { IntStream.range(0, text.length())
final var color = Color.getHSBColor(HelperFunctions.randomNumber(0, 100)/100.0f, 0.6f, 1.0f); .forEach(
i -> {
final var color =
Color.getHSBColor(HelperFunctions.randomNumber(0, 100) / 100.0f, 0.6f, 1.0f);
final var prevI = (i - 1 + text.length()) % text.length(); final var prevI = (i - 1 + text.length()) % text.length();
final var nextImage = makeImage((g) -> { final var nextImage =
makeImage(
(g) -> {
g.setColor(prevColor); g.setColor(prevColor);
g.drawString(String.valueOf(text.charAt(prevI)), advances[prevI] + jitter(), 45 + jitter()); g.drawString(
String.valueOf(text.charAt(prevI)),
advances[prevI] + jitter(),
45 + jitter());
g.setColor(color); g.setColor(color);
g.drawString(String.valueOf(text.charAt(i)), advances[i] + jitter(), 45 + jitter()); g.drawString(
String.valueOf(text.charAt(i)),
advances[i] + jitter(),
45 + jitter());
}); });
try { try {
writer.writeToSequence(nextImage); writer.writeToSequence(nextImage);