/// <summary>Tweens a 2D Toolkit Sprite's color using the given gradient /// (NOTE 1: only uses the colors of the gradient, not the alphas - NOTE 2: creates a Sequence, not a Tweener). /// Also stores the image as the tween's target so it can be used for filtered operations</summary> /// <param name="gradient">The gradient to use</param><param name="duration">The duration of the tween</param> public static Sequence DOGradientColor(this tk2dBaseSprite target, Gradient gradient, float duration) { Sequence s = DOTween.Sequence(); GradientColorKey[] colors = gradient.colorKeys; int len = colors.Length; for (int i = 0; i < len; ++i) { GradientColorKey c = colors[i]; if (i == 0 && c.time <= 0) { target.color = c.color; continue; } float colorDuration = i == len - 1 ? duration - s.Duration(false) // Verifies that total duration is correct : duration * (i == 0 ? c.time : c.time - colors[i - 1].time); s.Append(target.DOColor(c.color, colorDuration).SetEase(Ease.Linear)); } return(s); }