Exemplo n.º 1
0
        void CreateMergedLODGroupFromSingleMaterialMeshes()
        {
            string path = EditorUtility.SaveFilePanelInProject("Save merged mesh", "", "",
                                                               "Please enter a file name to save the merged mesh to");

            if (path.Length != 0)
            {
                if (_lodGroupVegetationMeshCombiner.TargetGameObject == null)
                {
                    return;
                }

                LODGroup   lodGroup     = _lodGroupVegetationMeshCombiner.TargetGameObject.GetComponentInChildren <LODGroup>();
                GameObject sourceObject = _lodGroupVegetationMeshCombiner.TargetGameObject;

                Vector3    targetPosition = sourceObject.transform.position;
                Quaternion targetRotation = sourceObject.transform.rotation;
                Vector3    targetScale    = sourceObject.transform.localScale;

                sourceObject.transform.position   = new Vector3(0, 0, 0);
                sourceObject.transform.rotation   = Quaternion.identity;
                sourceObject.transform.localScale = Vector3.one;

                if (lodGroup == null)
                {
                    return;
                }

                GameObject             mergedLODGroupObject = new GameObject("Merged_" + sourceObject.name);
                LODGroup               newLODGroup          = mergedLODGroupObject.AddComponent <LODGroup>();
                List <CombineInstance> combineInstanceList  = new List <CombineInstance>();

                LOD[] lods = lodGroup.GetLODs();

                // ReSharper disable once InconsistentNaming
                LOD[] newLODs = lodGroup.GetLODs();
                for (int i = 0; i <= lods.Length - 1; i++)
                {
                    combineInstanceList.Clear();
                    LOD lod = lods[i];

                    if (lod.renderers.Length > 0)
                    {
                        GameObject lodObject = new GameObject(sourceObject.name + "_LOD" + i.ToString());
                        lodObject.transform.SetParent(mergedLODGroupObject.transform);
                        MeshRenderer meshRenderer = lodObject.AddComponent <MeshRenderer>();
                        MeshFilter   meshFilter   = lodObject.AddComponent <MeshFilter>();
                        Renderer[]   newRenderers = new Renderer[1];
                        newRenderers[0]      = meshRenderer;
                        newLODs[i].renderers = newRenderers;


                        List <Material> materialList = new List <Material>();
                        for (int j = 0; j <= lod.renderers.Length - 1; j++)
                        {
                            MeshFilter tempMeshFilter = lod.renderers[j].gameObject.GetComponent <MeshFilter>();
                            if (!tempMeshFilter)
                            {
                                continue;
                            }

                            CombineInstance combineInstance = new CombineInstance
                            {
                                mesh = tempMeshFilter.sharedMesh, transform = meshFilter.transform.localToWorldMatrix
                            };
                            combineInstanceList.Add(combineInstance);
                            materialList.Add(lod.renderers[j].sharedMaterial);
                        }

                        Mesh       mesh      = new Mesh();
                        Material[] materials = materialList.ToArray();
                        mesh.CombineMeshes(combineInstanceList.ToArray(), false, true);

                        if (_lodGroupVegetationMeshCombiner.MergeSubmeshesWitEquialMaterial)
                        {
                            SubmeshCombiner submeshCombiner = new SubmeshCombiner();
                            for (int j = 0; j <= mesh.subMeshCount - 1; j++)
                            {
                                submeshCombiner.AddSubmesh(mesh.GetIndices(j), materials[j]);
                            }

                            submeshCombiner.UpdateMesh(mesh);
                            materials = submeshCombiner.GetMaterials();
                        }

                        meshFilter.sharedMesh = mesh;
                        AssetDatabase.CreateAsset(meshFilter.sharedMesh, path + "_LOD" + i.ToString() + ".asset");
                        meshRenderer.materials = materials;
                    }
                }

                newLODGroup.SetLODs(newLODs);

                sourceObject.transform.position   = targetPosition;
                sourceObject.transform.rotation   = targetRotation;
                sourceObject.transform.localScale = targetScale;
            }
        }
Exemplo n.º 2
0
        public static GameObject CombineMeshes(GameObject sourceGameObject, bool mergeSubmeshesWitEquialMaterial)
        {
            MeshFilter[]   meshFilters   = sourceGameObject.GetComponentsInChildren <MeshFilter>();
            MeshRenderer[] meshRenderers = sourceGameObject.GetComponentsInChildren <MeshRenderer>();

            Vector3    targetPosition = sourceGameObject.transform.position;
            Quaternion targetRotation = sourceGameObject.transform.rotation;
            Vector3    targetScale    = sourceGameObject.transform.localScale;

            sourceGameObject.transform.position   = new Vector3(0, 0, 0);
            sourceGameObject.transform.rotation   = Quaternion.identity;
            sourceGameObject.transform.localScale = Vector3.one;

            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;
                i++;
            }

            GameObject mergedMesh = new GameObject(sourceGameObject.name + "_Merged");

            mergedMesh.transform.position   = new Vector3(0, 0, 0);
            mergedMesh.transform.rotation   = Quaternion.identity;
            mergedMesh.transform.localScale = Vector3.one;

            MeshFilter meshFilter = mergedMesh.AddComponent <MeshFilter>();

            meshFilter.mesh = new Mesh();
            meshFilter.sharedMesh.CombineMeshes(combine, false, true);

            MeshRenderer meshRenderer = mergedMesh.AddComponent <MeshRenderer>();


            List <Material> materialList = new List <Material>();

            for (int j = 0; j <= meshRenderers.Length - 1; j++)
            {
                materialList.AddRange(meshRenderers[j].sharedMaterials);
            }

            Material[] materials = materialList.ToArray();
            meshRenderer.sharedMaterials = materials;

            if (mergeSubmeshesWitEquialMaterial)
            {
                SubmeshCombiner submeshCombiner = new SubmeshCombiner();
                for (int j = 0; j <= meshFilter.sharedMesh.subMeshCount - 1; j++)
                {
                    submeshCombiner.AddSubmesh(meshFilter.sharedMesh.GetIndices(j), materials[j]);
                }

                submeshCombiner.UpdateMesh(meshFilter.sharedMesh);
                meshRenderer.sharedMaterials = submeshCombiner.GetMaterials();
            }

            sourceGameObject.transform.position   = targetPosition;
            sourceGameObject.transform.rotation   = targetRotation;
            sourceGameObject.transform.localScale = targetScale;

            mergedMesh.transform.position   = targetPosition;
            mergedMesh.transform.rotation   = targetRotation;
            mergedMesh.transform.localScale = targetScale;

            return(mergedMesh);
        }
Exemplo n.º 3
0
        void CreateMergedLODGroup()
        {
            string path = EditorUtility.SaveFilePanelInProject("Save merged mesh", "", "",
                                                               "Please enter a file name to save the merged mesh to");

            if (path.Length != 0)
            {
                if (_lodGroupVegetationMeshCombiner.TargetGameObject == null)
                {
                    return;
                }

                LODGroup   lodGroup     = _lodGroupVegetationMeshCombiner.TargetGameObject.GetComponentInChildren <LODGroup>();
                GameObject sourceObject = _lodGroupVegetationMeshCombiner.TargetGameObject;

                Vector3    targetPosition = sourceObject.transform.position;
                Quaternion targetRotation = sourceObject.transform.rotation;
                Vector3    targetScale    = sourceObject.transform.localScale;

                sourceObject.transform.position   = new Vector3(0, 0, 0);
                sourceObject.transform.rotation   = Quaternion.identity;
                sourceObject.transform.localScale = Vector3.one;

                if (lodGroup == null)
                {
                    return;
                }

                GameObject mergedLODGroupObject = new GameObject("Merged_" + sourceObject.name);
                LODGroup   newLODGroup          = mergedLODGroupObject.AddComponent <LODGroup>();
                LOD[]      lods = lodGroup.GetLODs();

                // ReSharper disable once InconsistentNaming
                LOD[] newLODs = lodGroup.GetLODs();

                for (int i = 0; i <= lods.Length - 1; i++)
                {
                    LOD lod = lods[i];

                    if (lod.renderers.Length > 0)
                    {
                        GameObject lodObject = new GameObject(sourceObject.name + "_LOD" + i.ToString());
                        lodObject.transform.SetParent(mergedLODGroupObject.transform);
                        MeshRenderer meshRenderer = lodObject.AddComponent <MeshRenderer>();
                        MeshFilter   meshFilter   = lodObject.AddComponent <MeshFilter>();

                        Renderer   renderer       = lod.renderers[0];
                        MeshFilter tempMeshFilter = lod.renderers[0].gameObject.GetComponent <MeshFilter>();

                        Renderer[] newRenderers = new Renderer[1];
                        newRenderers[0]      = meshRenderer;
                        newLODs[i].renderers = newRenderers;
                        newLODs[i].screenRelativeTransitionHeight = (float)1 / (i + 1);

                        Mesh       mesh      = Instantiate(tempMeshFilter.sharedMesh);
                        Material[] materials = renderer.sharedMaterials;

                        SubmeshCombiner submeshCombiner = new SubmeshCombiner();
                        for (int j = 0; j <= mesh.subMeshCount - 1; j++)
                        {
                            submeshCombiner.AddSubmesh(mesh.GetIndices(j), materials[j]);
                        }

                        submeshCombiner.UpdateMesh(mesh);
                        materials = submeshCombiner.GetMaterials();

                        meshFilter.sharedMesh = mesh;
                        AssetDatabase.CreateAsset(meshFilter.sharedMesh, path + "_LOD" + i.ToString() + ".asset");
                        meshRenderer.materials = materials;
                    }
                }

                newLODGroup.SetLODs(newLODs);

                sourceObject.transform.position   = targetPosition;
                sourceObject.transform.rotation   = targetRotation;
                sourceObject.transform.localScale = targetScale;
            }
        }