URL: https://github.com/y-fujii/zuho

License: MIT License

License File: https://opensource.org/licenses/MIT

Description:

zuho.js - WebGL equirectangular image viewer

The AMP 360 plugin uses some of the shaders and overall WebGL logic initially implemented in zuho.js.

Files in this directory (copied from https://github.com/y-fujii/zuho):

- zuho.js (from https://github.com/y-fujii/zuho/commit/083a0183c218e388690f48253474d95ab81ef28b)

Local Modifications:

- Removed all event handling, CSS, menu UI and unused projection mappings

- Refactored into module, exporting Renderer and Matrix classes

- Removed String.raw calls (breaks the build)

- Swapped X-axis projection (original code was horizontally mirroring the source image)

- Added setImageOrientation(heading, pitch, roll) method to correct the orientation of the texture (credits: Nicolas Barradeau - https://github.com/nicoptere).

- Added init function for setting up resources.

- Added properties defined on init to the constructor.

- Added flag to enable preserveDrawingBuffer for visual tests.