1) Licence
作品「星屑螺旋」は、下記のApache License, Version 2.0ライセンスで配布されている成果物を含んでいます。2項で提示しているソースコードの一部を改変して下絵を作成し、切りました。
©2019 「星屑螺旋」は不許複製・禁無断転載とさせていただきます。

"星屑螺旋(Stellar Spiral)" contains the object licensed under the Apache License Version 2.0.
I modified the source code showing 2) and created the papercut art.
©2019 星屑螺旋 All right reserved.


2) Original Copyright of the Source Code
// M_2_5_01
//
// Generative Gestaltung – Creative Coding im Web
// ISBN: 978-3-87439-902-9, First Edition, Hermann Schmidt, Mainz, 2018
// Benedikt Groß, Hartmut Bohnacker, Julia Laub, Claudius Lazzeroni
// with contributions by Joey Lee and Niels Poldervaart
// Copyright 2018
//
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.