围绕一个旋转的物体旋转一个物体？

Question

我正在Unity3D中开发太阳系动画。行星围绕太阳旋转。但是我在模拟像月球这样的卫星时遇到了问题。月亮应该正常绕着世界旋转，月亮应该绕着世界旋转。由于 World 围绕 Sun 旋转，我在计算月球的真实旋转时遇到了麻烦。我不想使用 rotateAround() 因为它已被弃用。我需要使用 Rotate() 来完成这项工作。

这是我的planetScript

public class planetScript : MonoBehaviour {

    public GameObject target;//target is Sun for World, World for Moon etc

    public float rotateRatioCenter;//1 degree for World
    private float rotateSpeedTarget;

    public float rotateRatioAround;//365 for World
    private float rotateSpeedAround;

    public float counter = 0;
    void Start () {
    }

    // Update is called once per frame
    void Update () {

     rotateSpeedTarget = rotateRatioCenter * gameMasterScript.rotateAroundCenterRatio;//  rotateRatioCenter * 1 , 
     rotateSpeedAround = rotateSpeedTarget * rotateRatioAround;
     float yRotate = transform.eulerAngles.y;

     transform.Rotate(Vector3.up, rotateSpeedAround);

     rotateAroundTarget();
    }

    void rotateAroundTarget()//this is the method should be optimized
    {
        Quaternion quaRot = Quaternion.Euler(0, rotateSpeedTarget, 0);
        transform.position = quaRot * (transform.position - target.transform.position) + target.transform.position;
    }
}

gameView

Answer 1

月亮来了！！我使用行星脚本中的卫星对象解决了它，而不是将行星脚本分配给它们。 PlanetScript 现在有一个卫星游戏对象。

检查行星是否有卫星。
如果这样的话，卫星旋转的速度与行星绕太阳旋转的速度一样多。

行星和卫星绕太阳旋转后现在可以使卫星绕行星旋转（例如World rotated 1 degree around Sun rotate satellite 1 degree around sun and rotate the moon围绕地球 x 度）当世界围绕太阳旋转 1 度时，月亮围绕世界旋转大约 12 度。（1 月亮年 = 30 天差不多）。新脚本

public class planetScript：MonoBehaviour {

public GameObject target;//target is Sun for World, World for Moon etc
public GameObject satellite;

public float rotateRatioCenter;//1 degree for World
public float rotateRatioAround;//365 for World
private float rotateSpeedTarget;
private float rotateSpeedAround;

public float satelliterotateRatioCenter;//12x for Moon
public float satelliteRotateRatioAround;//1 for Moon
private float satelliteRotateSpeedTarget;
private float satelliteRotateSpeedAround;

public float counter = 0;
void Start () {
}

// Update is called once per frame
void Update () {

 rotateSpeedTarget = rotateRatioCenter * gameMasterScript.rotateAroundCenterRatio;//  rotateRatioCenter * 1 , 
 rotateSpeedAround = rotateSpeedTarget * rotateRatioAround;

 satelliteRotateSpeedTarget = satelliterotateRatioCenter * gameMasterScript.rotateAroundCenterRatio;
 satelliteRotateSpeedAround = satelliteRotateSpeedTarget * satelliteRotateRatioAround;

 transform.Rotate(Vector3.up, rotateSpeedAround);



 rotateAroundTarget();
}

void rotateAroundTarget()//this is the method should be optimized
{
    Quaternion quaRot = Quaternion.Euler(0, rotateSpeedTarget, 0);
    transform.position = quaRot * (transform.position - target.transform.position) + target.transform.position;

    if (satellite != null)
    {
        satellite.transform.Rotate(Vector3.up, satelliteRotateSpeedAround);
        satellite.transform.position = quaRot * (satellite.transform.position - target.transform.position) + target.transform.position;

        Quaternion quaRotSat = Quaternion.Euler(0, satelliteRotateSpeedTarget, 0);
        satellite.transform.position = quaRotSat * (satellite.transform.position - transform.position) + transform.position;
    }
}

}

因为不一定每架飞机都有卫星，所以脚本应该改一下。

围绕一个旋转的物体旋转一个物体？

Rotate an object around a rotating object?

c#

rotation

quaternions

unity3d