zuho.js - WebGL equirectangular image viewer Features: - Rendering quality. - Use QMC sampling to handle highly nonlinear anisotropy. - Pseudo gamma-corrected calculation. - Use two shaders (better speed vs better quality) adaptively. - Support many projection methods. - It is also very easy to add custom projection functions. See "Mapping" in "zuho.js". - No dependencies, small, easy to use. - Requires only "zuho.js", which is less than 600 SLOC. Usage: | <script defer src="zuho.js"></script> | <div class="equirectangular" data-src="your_favorite_image" style="width: 720px; height: 480px"></div> See "index.html" for example and "zuho.js" for detailed usage. Although JS API is not stable and not documented yet, it is easy to use because zuho.js is a tiny library. Manipulation: Rotate : Left drag. Zoom : Wheel or Shift + mouse left drag. TODO: - UI. - Support touch events. - Interpolation when zooming. - Read XMP metadata. - More high quality rendering with WebGL2. Tips: "zuhô (図法)" is the Japanese word which means "map projection method".