OpacityEffect.by constructor

OpacityEffect.by(
  1. double offset,
  2. EffectController controller, {
  3. String? paintId,
})

This constructor will set the opacity in relation to it's current opacity over time.

Implementation

OpacityEffect.by(
  double offset,
  EffectController controller, {
  this.paintId,
})  : _alphaOffset = (255 * offset).round(),
      super(controller);