Question

在我的Unity3d项目中，我想创建一个连接四个球体的网格。

我创建了一个新的四边形并将我的四个范围中的transform.position数组分配给我的四边形GetComponent<MeshFilter>().mesh.vertecies。

由于这不起作用，我如何读取或写入 Unity中顶点的全局位置？

我的解决方案（有效）

GameObject quad;
Transform[] spheres;
//asign values and do other stuff

void UpdateMesh(){
    Vector3[] newVerts = new Vector3[spheres.Length];
    for(int i = 0; i < newVerts.Length; i++){
        newVerts[i] = spheres[i].position - quad.transform.position;
    }
    quad.GetComponent<MeshFilter>().mesh.vertecies = newVerts;
}

Answer 1

这可能取决于你如何分配顶点这是一个可以试验的工作示例，只需将其作为脚本附加到四元组：

using UnityEngine;

// adding ExecuteInEditMode attribute so we can easily see the results from the editor
[RequireComponent(typeof(MeshFilter))]
[ExecuteInEditMode]
public class VertexChanger : MonoBehaviour {

    // assign these from the editor
    public Transform Sphere0;
    public Transform Sphere1;
    public Transform Sphere2;
    public Transform Sphere3;

    // doing changes in update so we see this immediately from the editor
    void Update () {
        if (Sphere0 == null || Sphere1 == null || Sphere2 == null || Sphere3 == null) {
            return;
        } 
        // create a new array of vertices and assign it
        Vector3[] newVertices = new[] {
            Sphere0.transform.position,
            Sphere1.transform.position,
            Sphere2.transform.position,
            Sphere3.transform.position
        };
        MeshFilter meshFilter = GetComponent<MeshFilter>();
        meshFilter.sharedMesh.vertices = newVertices;

        // these calls are not strictly necessary here...
        meshFilter.mesh.RecalculateBounds();
        meshFilter.mesh.RecalculateNormals();
    }
}

请注意，只有按照正确的顺序设置球体时，这才能正常工作，否则您可能还需要重新计算网格的三角形数组。

在Unity中使用网格连接Vector3 []

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