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using System;
namespace UnityEngine.PostProcessing;
[Serializable]
public sealed class ColorGradingCurve
{
public AnimationCurve curve;
[SerializeField]
private bool m_Loop;
[SerializeField]
private float m_ZeroValue;
[SerializeField]
private float m_Range;
private AnimationCurve m_InternalLoopingCurve;
public ColorGradingCurve(AnimationCurve curve, float zeroValue, bool loop, Vector2 bounds)
{
this.curve = curve;
m_ZeroValue = zeroValue;
m_Loop = loop;
m_Range = bounds.magnitude;
}
public void Cache()
{
if (!m_Loop)
{
return;
}
int length = curve.length;
if (length >= 2)
{
if (m_InternalLoopingCurve == null)
{
m_InternalLoopingCurve = new AnimationCurve();
}
Keyframe key = curve[length - 1];
key.time -= m_Range;
Keyframe key2 = curve[0];
key2.time += m_Range;
m_InternalLoopingCurve.keys = curve.keys;
m_InternalLoopingCurve.AddKey(key);
m_InternalLoopingCurve.AddKey(key2);
}
}
public float Evaluate(float t)
{
if (curve.length == 0)
{
return m_ZeroValue;
}
if (!m_Loop || curve.length == 1)
{
return curve.Evaluate(t);
}
return m_InternalLoopingCurve.Evaluate(t);
}
}
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