public Color Evaluate(float time) => Color.Lerp(g1.Evaluate(time), g2.Evaluate(time),
Mathf.Clamp01((time - 0.5f) * (0.5f / (0.5f - lerpOff)) + 0.5f));
public static void GradientHelpers()
{
IGradient g = EvenlySpaced(Color.red, Color.blue);
ColorEq(g.Evaluate(0f), Color.red);
ColorEq(g.Evaluate(1f), Color.blue);
var gr = g.Reverse();
ColorEq(gr.Evaluate(0f), Color.blue);
ColorEq(gr.Evaluate(1f), Color.red);
var gsr = gr.RemapTime(0.2f, 0.7f);
ColorEq(gsr.Evaluate(0), Color.Lerp(Color.blue, Color.red, 0.2f));
ColorEq(gsr.Evaluate(1), Color.Lerp(Color.blue, Color.red, 0.7f));
ColorEq(gsr.Evaluate(0.5f), Color.Lerp(Color.blue, Color.red, 0.45f));
Assert.IsTrue(gsr is DGradient);
var red0 = new Color(1f, 0, 0, 0);
g = EvenlySpaced(red0, Color.blue);
//Alpha in color DOES matter as fallback
ColorEq(g.Evaluate(0f), Color.red.WithA(0f));
ColorEq(g.Evaluate(1f), Color.blue);
g = FromKeys(new[] { new GradientColorKey(Color.red, 0f), new GradientColorKey(Color.blue, 1f) },
new[] { new GradientAlphaKey(0f, 0f), new GradientAlphaKey(1f, 1f) });
ColorEq(g.Evaluate(0f), red0);
ColorEq(g.Evaluate(1f), Color.blue);
g = g.RemapTime(0.2f, 0.7f);
ColorEq(g.Evaluate(0), Color.Lerp(red0, Color.blue, 0.2f));
ColorEq(g.Evaluate(1), Color.Lerp(red0, Color.blue, 0.7f));
ColorEq(g.Evaluate(0.5f), Color.Lerp(red0, Color.blue, 0.45f));
g = g.RemapTime(0f, 2f);
ColorEq(g.Evaluate(0), Color.Lerp(red0, Color.blue, 0.2f));
ColorEq(g.Evaluate(1), Color.Lerp(red0, Color.blue, 0.7f));
ColorEq(g.Evaluate(0.5f), Color.Lerp(red0, Color.blue, 0.7f));
Assert.IsTrue(g is DGradient);
}
public Color Evaluate(float time) => inner.Evaluate(Mathf.Clamp01(start + eminuss * time));