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using System.Collections;
using UnityEngine;
[AddComponentMenu("Simple Mesh Combine")]
public class SimpleMeshCombine : MonoBehaviour
{
public GameObject[] combinedGameOjects;
public GameObject combined;
public string meshName = "Combined_Meshes";
public bool _canGenerateLightmapUV;
public int vCount;
public bool generateLightmapUV;
public float lightmapScale = 1f;
public GameObject copyTarget;
public bool destroyOldColliders;
public bool keepStructure = true;
public Mesh autoOverwrite;
public bool setStatic = true;
public void EnableRenderers(bool e)
{
for (int i = 0; i < combinedGameOjects.Length && !(combinedGameOjects[i] == null); i++)
{
Renderer component = combinedGameOjects[i].GetComponent<Renderer>();
if (component != null)
{
component.enabled = e;
}
}
}
public MeshFilter[] FindEnabledMeshes()
{
MeshFilter[] array = null;
int num = 0;
array = base.transform.GetComponentsInChildren<MeshFilter>();
for (int i = 0; i < array.Length; i++)
{
if (array[i].GetComponent<MeshRenderer>() != null && array[i].GetComponent<MeshRenderer>().enabled)
{
num++;
}
}
MeshFilter[] array2 = new MeshFilter[num];
num = 0;
for (int j = 0; j < array.Length; j++)
{
if (array[j].GetComponent<MeshRenderer>() != null && array[j].GetComponent<MeshRenderer>().enabled)
{
array2[num] = array[j];
num++;
}
}
return array2;
}
public void CombineMeshes()
{
GameObject gameObject = new GameObject();
gameObject.name = "_Combined Mesh [" + base.name + "]";
gameObject.gameObject.AddComponent<MeshFilter>();
gameObject.gameObject.AddComponent<MeshRenderer>();
MeshFilter[] array = null;
array = FindEnabledMeshes();
ArrayList arrayList = new ArrayList();
ArrayList arrayList2 = new ArrayList();
combinedGameOjects = new GameObject[array.Length];
for (int i = 0; i < array.Length; i++)
{
combinedGameOjects[i] = array[i].gameObject;
MeshRenderer component = array[i].GetComponent<MeshRenderer>();
array[i].transform.gameObject.GetComponent<Renderer>().enabled = false;
if (array[i].sharedMesh == null)
{
break;
}
for (int j = 0; j < array[i].sharedMesh.subMeshCount; j++)
{
if (component == null)
{
break;
}
if (j < component.sharedMaterials.Length && j < array[i].sharedMesh.subMeshCount)
{
int num = Contains(arrayList, component.sharedMaterials[j]);
if (num == -1)
{
arrayList.Add(component.sharedMaterials[j]);
num = arrayList.Count - 1;
}
arrayList2.Add(new ArrayList());
CombineInstance combineInstance = default(CombineInstance);
combineInstance.transform = component.transform.localToWorldMatrix;
combineInstance.mesh = array[i].sharedMesh;
combineInstance.subMeshIndex = j;
(arrayList2[num] as ArrayList).Add(combineInstance);
}
}
}
Mesh[] array2 = new Mesh[arrayList.Count];
CombineInstance[] array3 = new CombineInstance[arrayList.Count];
for (int k = 0; k < arrayList.Count; k++)
{
CombineInstance[] combine = (arrayList2[k] as ArrayList).ToArray(typeof(CombineInstance)) as CombineInstance[];
array2[k] = new Mesh();
array2[k].CombineMeshes(combine, mergeSubMeshes: true, useMatrices: true);
array3[k] = default(CombineInstance);
array3[k].mesh = array2[k];
array3[k].subMeshIndex = 0;
}
Mesh mesh2 = (gameObject.GetComponent<MeshFilter>().sharedMesh = new Mesh());
Mesh mesh3 = mesh2;
mesh3.Clear();
mesh3.CombineMeshes(array3, mergeSubMeshes: false, useMatrices: false);
gameObject.GetComponent<MeshFilter>().sharedMesh = mesh3;
Mesh[] array4 = array2;
foreach (Mesh obj in array4)
{
obj.Clear();
Object.DestroyImmediate(obj);
}
MeshRenderer meshRenderer = gameObject.GetComponent<MeshFilter>().GetComponent<MeshRenderer>();
if (meshRenderer == null)
{
meshRenderer = base.gameObject.AddComponent<MeshRenderer>();
}
Material[] materials = arrayList.ToArray(typeof(Material)) as Material[];
meshRenderer.materials = materials;
combined = gameObject.gameObject;
EnableRenderers(e: false);
gameObject.transform.parent = base.transform;
gameObject.GetComponent<MeshFilter>().sharedMesh.RecalculateBounds();
vCount = gameObject.GetComponent<MeshFilter>().sharedMesh.vertexCount;
if (vCount > 65536)
{
Debug.LogWarning("Vertex Count: " + vCount + "- Vertex Count too high, please divide mesh combine into more groups. Max 65536 for each mesh");
_canGenerateLightmapUV = false;
}
else
{
_canGenerateLightmapUV = true;
}
if (setStatic)
{
combined.isStatic = true;
}
}
public int Contains(ArrayList l, Material n)
{
for (int i = 0; i < l.Count; i++)
{
if (l[i] as Material == n)
{
return i;
}
}
return -1;
}
}
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