设置此键的外切切线。外切切线影响从该键到下一个键处的曲线的斜度。
using UnityEngine;
public class KeyFrameTangentExample : MonoBehaviour { AnimationCurve animCurve = null;
void Start() { Keyframe[] ks = new Keyframe[3];
ks[0] = new Keyframe(0, 0); ks[0].outTangent = 5f; // +5 units on the y axis for 1 unit on the x axis.
ks[1] = new Keyframe(4, 0); ks[1].outTangent = 0f; // straight
ks[2] = new Keyframe(6, 0); ks[2].outTangent = -5f; // -5 units on the y axis for 1 unit on the x axis.
animCurve = new AnimationCurve(ks); }
void Update() { if (animCurve != null) transform.position = new Vector3(Time.time, animCurve.Evaluate(Time.time), 0); } }