Mesh.CombineMeshes

Parameters

Description

Combines several Meshes into this Mesh.

Combining Meshes is useful for performance optimization.

If mergeSubMeshes is true, all the Meshes are combined to a single sub-Mesh. Otherwise, each Mesh goes into a different sub-Mesh. If all Meshes share the same Material, set this to true.

If useMatrices is true, the transform matrices in CombineInstance structs are used. Otherwise, they are ignored.

@script RequireComponent(MeshFilter)
@script RequireComponent(MeshRenderer)
function Start () {
    var meshFilters: MeshFilter[] = GetComponentsInChildren(MeshFilter);
    var combine : CombineInstance[] = new CombineInstance[meshFilters.Length];
    for (var i = 0; i < meshFilters.Length; i++){
        combine[i].mesh = meshFilters[i].sharedMesh;
        combine[i].transform = meshFilters[i].transform.localToWorldMatrix;
        meshFilters[i].gameObject.active = false;
    }
    transform.GetComponent.<MeshFilter>().mesh = new Mesh();
    transform.GetComponent.<MeshFilter>().mesh.CombineMeshes(combine);
    transform.gameObject.active = true;
}

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(MeshFilter))]
[RequireComponent(typeof(MeshRenderer))]
public class ExampleClass : MonoBehaviour {
    void Start() {
        MeshFilter[] meshFilters = GetComponentsInChildren<MeshFilter>();
        CombineInstance[] combine = new CombineInstance[meshFilters.Length];
        int i = 0;
        while (i < meshFilters.Length) {
            combine[i].mesh = meshFilters[i].sharedMesh;
            combine[i].transform = meshFilters[i].transform.localToWorldMatrix;
            meshFilters[i].gameObject.active = false;
            i++;
        }
        transform.GetComponent<MeshFilter>().mesh = new Mesh();
        transform.GetComponent<MeshFilter>().mesh.CombineMeshes(combine);
        transform.gameObject.active = true;
    }
}