示例#1
0
        private Mesh LoadMesh(glTFLoader.Schema.MeshPrimitive[] primitives)
        {
            var subMeshes = new GltfMesh[primitives.Length];

            for (int i = 0; i < primitives.Length; i++)
            {
                var primitive = primitives[i];
                subMeshes[i] = LoadSubMesh(primitive);
            }

            return(CreateUnityMesh(subMeshes));
        }
示例#2
0
        private GltfMesh LoadSubMesh(glTFLoader.Schema.MeshPrimitive primitive)
        {
            var mesh = new GltfMesh();

            // Consider moving this logic into another class (SubMeshLoader.cs?)
            foreach (var attribute in primitive.Attributes)
            {
                LoadMeshAttribute(mesh, attribute.Key, attribute.Value);
            }

            LoadMeshAttribute(mesh, "INDEX", primitive.Indices.GetValueOrDefault());

            return(mesh);
        }
示例#3
0
        private void LoadMeshAttribute(GltfMesh mesh, string attributeName, int accessorIndex)
        {
            var arr = accessorLoader.LoadAccessor(accessorIndex);

            switch (attributeName)
            {
            case "POSITION":
            {
                var vertices = (Vector3[])arr;
                CoordinateSystemConverter.Convert(vertices);
                mesh.vertices = vertices;
                break;
            }

            case "NORMAL":
            {
                var normals = (Vector3[])arr;
                CoordinateSystemConverter.Convert(normals);
                mesh.normals = normals;
                break;
            }

            case "TANGENT":
            {
                var tangents = (Vector4[])arr;
                CoordinateSystemConverter.Convert(tangents);
                mesh.tangents = tangents;
                break;
            }

            case "TEXCOORD_0":
            {
                var texCoords = (Vector2[])arr;
                CoordinateSystemConverter.FlipTexCoords(texCoords);
                mesh.texCoords = texCoords;
                break;
            }

            case "COLOR_0":
            {
                var colors = (Vector4[])arr;
                mesh.colors = TypeConverter.ConvertColors(colors);
                break;
            }

            case "INDEX":
            {
                var indices = new int[arr.Length];
                for (int i = 0; i < arr.Length; i++)
                {
                    indices[i] = Convert.ToInt32(arr.GetValue(i));
                }

                CoordinateSystemConverter.FlipIndices(indices);
                mesh.indices = indices;
                break;
            }

            case "JOINTS_0":
                mesh.joints = (Vector4[])arr;
                break;

            case "WEIGHTS_0":
                mesh.weights = (Vector4[])arr;
                break;

            default:
                Debug.LogWarning($"Invalid accessor name ({attributeName})");
                break;
            }
        }