Question

JavaScript => public var centerOfMass: Vector3;
C# => public Vector3 centerOfMass;

Description 描述

The center of mass relative to the transform's origin.

相对于变换原点的质心。

If you don't set the center of mass from a script it will be calculated automatically from all colliders attached to the rigidbody. After a custom center of mass set, it will no longer be recomputed automatically on modifications such as adding or removing colliders, translating them, scaling etc. To revert back to the automatically computed center of mass, use Rigidbody.ResetCenterOfMass.

如果不从脚本设置质心，那么会从附加到该刚体的所有碰撞器自动计算。自定义质心之后，它将不再自动重新计算修改，如添加或移除碰撞器、移动、缩放等。要恢复到自动计算质心，使用Rigidbody.ResetCenterOfMass。

Setting the center of mass is often useful when simulating cars to make them more stable. A car with a lower center of mass is less likely to topple over.

当模拟车辆使其更稳定，设置质心通常很有用。车轮较低的质心更不容易翻车。

Note: centerOfMass is relative to the transform's position and rotation, but will not reflect the transform's scale!

注意：centerOfMass是相对于变换的位置和旋转，但是不会受到缩放的影响。

JavaScript:

// Expose center of mass to allow it to be set from
// the inspector.
var com: Vector3;
var rb: Rigidbody;
 
function Start() {
	rb = GetComponent.<Rigidbody>();
	rb.centerOfMass = com;
}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    public Vector3 com;
    public Rigidbody rb;
    void Start() {
        rb = GetComponent<Rigidbody>();
        rb.centerOfMass = com;
    }
}

Rigidbody