Extension:3D/bg

The 3D extension gives the user of a wiki support for uploading and viewing 3D models. See Help:Extension:3d for usage documentation.

It currently supports the STL file format, which is common in the 3D printing field.

Short-term plan for Wikimedia production release

 * 1) ✅ Upload and hooks for 2D rendering code made into this extension
 * 2) ✅ Code review for T132064 (282211) - "Make Media Viewer pluggable for the 3d extension, videos, …"
 * 3) ✅ Deploy to Beta Cluster for testing, bug-discovery, and further editor feedback
 * 4) Request UI/UX input on possible fixes & improvements, in the short-term and medium-term

Related tasks
Deployment of this tool: Other 3D file support:
 * T132058 - 3d extension supporting AMF and STL (3d printing files)
 * T54655 - Add support for thumbnails and interactive views of 3D models
 * T132064 - Make Media Viewer pluggable for the 3d extension, videos, …
 * T132063 - Security review of 3d2png
 * T3790 - Allow uploading of 3D files to Wikimedia Commons
 * T131723 - Provide a mechanism to sanitise user-generated 3D files to meet security requirements