Vector3.RotateTowards

参数

返回值

Vector3 RotateTowards 生成的位置。

描述

将向量 current 旋转朝向 target。

此函数类似于 MoveTowards，但向量被视为方向而不是位置。 current 向量将围绕 target 方向旋转 maxRadiansDelta 角，尽管它将准确地落在目标上而不是过度旋转。如果 current 和 target 的幅度不同，则结果的幅度将在旋转过程中进行线性插值。如果对 maxRadiansDelta 使用负值，则向量将远离 target/ 旋转，直到它指向完全相反的方向，然后停止。


其他资源： Quaternion.RotateTowards.

using UnityEngine;

// To use this script, attach it to the GameObject that you would like to rotate towards another game object.
// After attaching it, go to the inspector and drag the GameObject you would like to rotate towards into the target field.
// Move the target around in the scene view to see the GameObject continuously rotate towards it.
public class Example : MonoBehaviour
{
    // The target marker.
    public Transform target;

    // Angular speed in radians per sec.
    public float speed = 1.0f;

    void Update()
    {
        // Determine which direction to rotate towards
        Vector3 targetDirection = target.position - transform.position;

        // The step size is equal to speed times frame time.
        float singleStep = speed * Time.deltaTime;

        // Rotate the forward vector towards the target direction by one step
        Vector3 newDirection = Vector3.RotateTowards(transform.forward, targetDirection, singleStep, 0.0f);

        // Draw a ray pointing at our target in
        Debug.DrawRay(transform.position, newDirection, Color.red);

        // Calculate a rotation a step closer to the target and applies rotation to this object
        transform.rotation = Quaternion.LookRotation(newDirection);
    }
}