rangeError in last version

[eusoudagarcia]

Error: The following RangeError was thrown building... max must be in range 0 < max ≤ 2^32, was 0... When the exception was thrown, this was the stack: dart-sdk/lib/_internal/js_dev_runtime/private/ddcruntime/errors.dart 297:3 throw dart-sdk/lib/_internal/js_dev_runtime/patch/math_patch.dart 88:7 nextInt packages/wave_blob/utils.dart 12:59 get randomNumber packages/wave_blob/wave_drawable.dart 179:53 [_generateBlob] packages/wave_blob/wave_drawable.dart 46:7 new packages/wave_blob/wave_blob.dart 62:17 initState packages/flutter/src/widgets/framework.dart 5611:55 [_firstBuild] ...

Hey, try it. Is working now.

class Utils { static final v.Matrix4 _matrix = v.Matrix4.identity(); static final Random _random = Random(); static const double maxAmplitude = 8500; static const double maxScale = 1.3;

// static int get randomNumber => _random.nextInt(1 << 32) - (1 << 31); static int get randomNumber => _random.nextInt(1 << 31); // Changed here

....

class WaveDrawable{ ...

void _generateBlob(List r, List a, int i) { double angleDif = 360 / N 0.05; double radDif = _maxRadius - _minRadius; // r[i] = _minRadius + ((Utils.randomNumber % 100) / 100).abs() radDif; // a[i] = 360 / N i + ((Utils.randomNumber % 100) / 100) angleDif; // _speed[i] = (0.017 + 0.003 * ((Utils.randomNumber % 100).abs() / 100));

r[i] = _minRadius + (Utils.randomNumber.abs() % 100 / 100) * radDif; // Changed
a[i] = 360 / N * i + (Utils.randomNumber.abs() % 100 / 100) * angleDif; // Changed
_speed[i] = (0.017 + 0.003 * (Utils.randomNumber.abs() % 100 / 100)); // Changed

}

}

[hosein-nadali]

Hi @garciadp95 . Thanks for your suggestion. Please explain how did you face this issue?

[sarahzayat2019]

max must be in range 0 < max ≤ 2^32, was 0

i faced this issue as well