81 lines
2.5 KiB
C#
81 lines
2.5 KiB
C#
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using System;
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using JetBrains.Annotations;
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using UnityEngine;
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using UnityEngine.Playables;
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using UnityEngine.Timeline;
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[Serializable]
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public class TransformTweenBehaviour : PlayableBehaviour
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{
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public enum TweenType
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{
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Linear,
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Deceleration,
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Harmonic,
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Custom,
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}
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public Transform startLocation;
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public Transform endLocation;
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public bool tweenPosition = true;
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public bool tweenRotation = true;
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public TweenType tweenType;
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public AnimationCurve customCurve = AnimationCurve.Linear(0f, 0f, 1f, 1f);
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public Vector3 startingPosition;
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public Quaternion startingRotation = Quaternion.identity;
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AnimationCurve m_LinearCurve = AnimationCurve.Linear(0f, 0f, 1f, 1f);
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AnimationCurve m_DecelerationCurve = new AnimationCurve
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(
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new Keyframe(0f, 0f, -k_RightAngleInRads, k_RightAngleInRads),
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new Keyframe(1f, 1f, 0f, 0f)
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);
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AnimationCurve m_HarmonicCurve = AnimationCurve.EaseInOut(0f, 0f, 1f, 1f);
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const float k_RightAngleInRads = Mathf.PI * 0.5f;
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public override void PrepareFrame (Playable playable, FrameData info)
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{
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if (startLocation)
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{
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startingPosition = startLocation.position;
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startingRotation = startLocation.rotation;
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}
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}
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public float EvaluateCurrentCurve (float time)
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{
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if (tweenType == TweenType.Custom && !IsCustomCurveNormalised ())
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{
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Debug.LogError("Custom Curve is not normalised. Curve must start at 0,0 and end at 1,1.");
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return 0f;
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}
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switch (tweenType)
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{
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case TweenType.Linear:
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return m_LinearCurve.Evaluate (time);
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case TweenType.Deceleration:
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return m_DecelerationCurve.Evaluate (time);
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case TweenType.Harmonic:
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return m_HarmonicCurve.Evaluate (time);
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default:
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return customCurve.Evaluate (time);
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}
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}
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bool IsCustomCurveNormalised ()
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{
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if (!Mathf.Approximately (customCurve[0].time, 0f))
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return false;
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if (!Mathf.Approximately (customCurve[0].value, 0f))
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return false;
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if (!Mathf.Approximately (customCurve[customCurve.length - 1].time, 1f))
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return false;
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return Mathf.Approximately (customCurve[customCurve.length - 1].value, 1f);
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}
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}
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