Attributions & Notices

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ArkDraft incorporates open-source software from the projects below. Each project's notice is reproduced verbatim where required by its license; modifications we've made are listed beneath each notice for transparency.

ArkDraft — Proprietary Code

Copyright © 2026 ArkDraft. All rights reserved. The ArkDraft application, including but not limited to its user interface, application logic, server APIs, database schema, original imagery, and modifications to third-party components (see Potree below), is proprietary to ArkDraft and is not open source.

No part of the ArkDraft application may be reproduced, copied, republished, scraped, decompiled, reverse-engineered, modified, sold, sublicensed, or otherwise exploited without ArkDraft's prior written consent, except as expressly permitted by an applicable subscription or end-user agreement, or as required by law (including the rights granted under the third-party licenses reproduced below). Access to ArkDraft is conditional on the ArkDraft Terms of Service.

“ArkDraft” and the ArkDraft logo are trademarks of ArkDraft. All other trademarks referenced on this page are the property of their respective owners.

Potree

License (verbatim)

============
== POTREE ==
============

http://potree.org

Copyright (c) 2011-2020, Markus Schütz
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the FreeBSD Project.

Modifications by ArkDraft

ArkDraft uses a modified copy of Potree. The modifications are limited to the bundled potree.js file shipped with this application and include:

  • Patched the point-cloud vertex shader and associated material uniforms to support per-volume clip modes (highlight / keep / hide), with hide-overrides-keep semantics when clip volumes intersect.
  • Wrapped XHRFactory to forward credentials on cross-origin tile requests and to strip content-type headers that would otherwise force CORS preflights against CloudFront-signed URLs.

None of the modifications change the upstream copyright or license terms — Potree continues to be governed by the 2-clause BSD license reproduced above.

Other open-source components

ArkDraft also depends on the following projects, used under their respective licenses:

  • three.js — MIT License, copyright © 2010-present three.js authors.
  • dxf-parser — MIT License, copyright © Ben Nortier.
  • Next.js, React, Tailwind CSS, Radix UI, Supabase JS, AWS SDK, lucide-react — MIT or Apache-2.0 licenses, used unmodified.

Full license texts for these dependencies are included in the project's node_modules tree under each package's LICENSE file and are available on request.

Questions about licensing, attribution, or compliance? Contact legal@arkdraft.com.