1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16declare function print(arg:any, arg1?: any):string;
17
18function lengthVector(self: number[]): number {
19    return Math.sqrt(self[0] * self[0] + self[1] * self[1] + self[1] * self[1]);
20}
21
22function normalise(v: number[]): number[] {
23    let len = lengthVector(v);
24    print(len);
25    return [v[0] / len, v[1] / len, v[2] / len];
26}
27
28print(normalise([0.8,  -0.8, 1]));