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160 lines
6.7 KiB
160 lines
6.7 KiB
/****************************************
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Simple Mesh Combine
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Copyright Unluck Software
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www.chemicalbliss.com
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*****************************************/
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//Add script to the parent gameObject, then click combine
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using UnityEngine;
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using System;
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using System.Collections.Generic;
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using System.Collections;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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[AddComponentMenu("Simple Mesh Combine")]
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public class SimpleMeshCombine:MonoBehaviour{
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public GameObject[] combinedGameOjects; //Stores gameObjects that has been merged, mesh renderer disabled
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public GameObject combined; //Stores the combined mesh gameObject
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public string meshName = "Combined_Meshes"; //Asset name when saving as prefab
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public bool _canGenerateLightmapUV;
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public int vCount;
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public bool generateLightmapUV;
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public GameObject copyTarget;
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public bool destroyOldColliders;
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public bool keepStructure = true;
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public void EnableRenderers(bool e) {
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for(int i = 0; i < combinedGameOjects.Length; i++){
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if(combinedGameOjects[i] == null) break;
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Renderer renderer = combinedGameOjects[i].GetComponent<Renderer>();
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if(renderer != null) renderer.enabled = e;
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}
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}
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//Returns a meshFilter[] list of all renderer enabled meshfilters(so that it does not merge disabled meshes, useful when there are invisible box colliders)
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public MeshFilter[] FindEnabledMeshes(){
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MeshFilter[] renderers = null;
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int count = 0;
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renderers = transform.GetComponentsInChildren<MeshFilter>();
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//count all the enabled meshrenderers in children
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for(int i = 0; i < renderers.Length; i++)
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{
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if((renderers[i].GetComponent<MeshRenderer>() != null) && renderers[i].GetComponent<MeshRenderer>().enabled)
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count++;
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}
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MeshFilter[] meshfilters = new MeshFilter[count];//creates a new array with the correct length
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count = 0;
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//adds all enabled meshes to the array
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for(int ii = 0; ii < renderers.Length; ii++)
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{
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if((renderers[ii].GetComponent<MeshRenderer>() != null) && renderers[ii].GetComponent<MeshRenderer>().enabled){
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meshfilters[count] = renderers[ii];
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count++;
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}
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}
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return meshfilters;
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}
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public void CombineMeshes() {
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GameObject combo = new GameObject();
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combo.name = "_Combined Mesh [" + name + "]";
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combo.gameObject.AddComponent<MeshFilter>();
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combo.gameObject.AddComponent<MeshRenderer>();
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MeshFilter[] meshFilters = null;
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meshFilters = FindEnabledMeshes();
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ArrayList materials = new ArrayList();
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ArrayList combineInstanceArrays = new ArrayList();
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combinedGameOjects = new GameObject[meshFilters.Length];
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for(int i = 0; i < meshFilters.Length; i++) {
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MeshFilter[] meshFilterss = meshFilters[i].GetComponentsInChildren<MeshFilter>();
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combinedGameOjects[i] = meshFilters[i].gameObject;
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foreach(MeshFilter meshFilter in meshFilterss) {
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MeshRenderer meshRenderer = meshFilter.GetComponent<MeshRenderer>();
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meshFilters[i].transform.gameObject.GetComponent<Renderer>().enabled = false;
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if(meshFilters[i].sharedMesh == null){
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Debug.LogWarning("SimpleMeshCombine : " + meshFilter.gameObject + " [Mesh Filter] has no [Mesh], mesh will not be included in combine..");
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break;
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}
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for(int o = 0; o < meshFilter.sharedMesh.subMeshCount; o++) {
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if(meshRenderer == null){
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Debug.LogWarning("SimpleMeshCombine : " + meshFilter.gameObject + "has a [Mesh Filter] but no [Mesh Renderer], mesh will not be included in combine.");
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break;
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}
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if(o < meshRenderer.sharedMaterials.Length && o < meshFilter.sharedMesh.subMeshCount){
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int materialArrayIndex = Contains(materials, meshRenderer.sharedMaterials[o]);
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if (materialArrayIndex == -1) {
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materials.Add(meshRenderer.sharedMaterials[o]);
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materialArrayIndex = materials.Count - 1;
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}
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combineInstanceArrays.Add(new ArrayList());
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CombineInstance combineInstance = new CombineInstance();
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combineInstance.transform = meshRenderer.transform.localToWorldMatrix;
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combineInstance.subMeshIndex = o;
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combineInstance.mesh = meshFilter.sharedMesh;
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(combineInstanceArrays[materialArrayIndex] as ArrayList).Add(combineInstance);
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}
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#if UNITY_EDITOR
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else{
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Debug.LogWarning("Simple Mesh Combine: GameObject [ " +meshRenderer.gameObject.name + " ] is missing a material (Mesh or sub-mesh ignored from combine)");
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}
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#endif
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}
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}
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#if UNITY_EDITOR
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EditorUtility.DisplayProgressBar("Combining", "", (float)i);
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#endif
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}
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Mesh[] meshes = new Mesh[materials.Count];
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CombineInstance[] combineInstances = new CombineInstance[materials.Count];
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for(int m = 0; m < materials.Count; m++) {
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CombineInstance[] combineInstanceArray = (combineInstanceArrays[m] as ArrayList).ToArray(typeof(CombineInstance)) as CombineInstance[];
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meshes[m] = new Mesh();
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meshes[m].CombineMeshes(combineInstanceArray, true, true);
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combineInstances[m] = new CombineInstance();
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combineInstances[m].mesh = meshes[m];
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combineInstances[m].subMeshIndex = 0;
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}
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combo.GetComponent<MeshFilter>().sharedMesh = new Mesh();
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combo.GetComponent<MeshFilter>().sharedMesh.CombineMeshes(combineInstances, false, false);
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foreach(Mesh mesh in meshes) {
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mesh.Clear();
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DestroyImmediate(mesh);
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}
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MeshRenderer meshRendererCombine = combo.GetComponent<MeshFilter>().GetComponent<MeshRenderer>();
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if (meshRendererCombine == null) meshRendererCombine = gameObject.AddComponent<MeshRenderer>();
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Material[] materialsArray = materials.ToArray(typeof(Material)) as Material[];
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meshRendererCombine.materials = materialsArray;
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combined = combo.gameObject;
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EnableRenderers(false);
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combo.transform.parent = transform;
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#if UNITY_EDITOR
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if(generateLightmapUV){
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Unwrapping.GenerateSecondaryUVSet(combo.GetComponent<MeshFilter>().sharedMesh);
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}
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#endif
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vCount = combo.GetComponent<MeshFilter>().sharedMesh.vertexCount;
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if(vCount > 65536) {
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Debug.LogWarning("Vertex Count: " +vCount + "- Vertex Count too high, please divide mesh combine into more groups. Max 65536 for each mesh" );
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_canGenerateLightmapUV = false;
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}else{
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_canGenerateLightmapUV = true;
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}
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#if UNITY_EDITOR
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EditorUtility.ClearProgressBar();
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#endif
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}
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public int Contains(ArrayList l,Material n) {
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for(int i = 0; i < l.Count; i++) {
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if ((l[i] as Material) == n) {
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return i;
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}
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}
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return -1;
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}
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}
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