Version: 2020.3
public float inTangent ;

描述

设置此关键帧的传入切线。传入切线会影响从上一个关键帧到此关键帧的曲线斜率。

传入切线与曲线的传入斜率匹配。inTangent 的正值会形成向下切线,而负值会形成向上切线。

另请参阅:outTangent

using UnityEngine;

public class KeyFrameTangentExample : MonoBehaviour { AnimationCurve animCurve = null;

void Start() { Keyframe[] ks = new Keyframe[3];

ks[0] = new Keyframe(0, 0); ks[0].inTangent = 5f; // -5 units on the y axis for 1 unit on the x axis.

ks[1] = new Keyframe(4, 0); ks[1].inTangent = 0f; // straight

ks[2] = new Keyframe(6, 0); ks[2].inTangent = -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); } }