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Modify rounding error logic

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Ryuzaki
2022-09-21 23:11:18 +05:30
parent 793415fb9e
commit 5f3c591f5c
1 changed files with 1 additions and 7 deletions
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8
packages/flame/lib/src/effects/opacity_effect.dart
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@@ -68,14 +68,8 @@ class OpacityEffect extends ComponentEffect<HasPaint> {
final currentAlpha = target.getAlpha(paintId: paintId);
final deltaAlpha =
(_alphaOffset * deltaProgress) + _roundingError * deltaProgress.sign;
final remainder = deltaAlpha.remainder(1.0).abs();
_roundingError = remainder >= 0.5 ? -1 * (1.0 - remainder) : remainder;
var nextAlpha = (currentAlpha + deltaAlpha).round();
if (nextAlpha < 0) {
_roundingError += nextAlpha.abs();
} else if (nextAlpha > 255) {
_roundingError += nextAlpha - 255;
}
_roundingError = (currentAlpha + deltaAlpha) - nextAlpha;
nextAlpha = nextAlpha.clamp(0, 255);
target.setAlpha(nextAlpha, paintId: paintId);
}