////////////////////////////////////////////////////////////////
//
//                           HG_SDF
//
//     GLSL LIBRARY FOR BUILDING SIGNED DISTANCE BOUNDS
//
//     version 2021-07-28
//
//     Check https://mercury.sexy/hg_sdf for updates
//     and usage examples. Send feedback to spheretracing@mercury.sexy.
//
//     Brought to you by MERCURY https://mercury.sexy/
//
//
//
// Released dual-licensed under
//   Creative Commons Attribution-NonCommercial (CC BY-NC)
// or
//   MIT License
// at your choice.
//
// SPDX-License-Identifier: MIT OR CC-BY-NC-4.0
//
// /////
//
// CC-BY-NC-4.0
// https://creativecommons.org/licenses/by-nc/4.0/legalcode
// https://creativecommons.org/licenses/by-nc/4.0/
//
// /////
//
// MIT License
//
// Copyright (c) 2011-2021 Mercury Demogroup
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
// /////