Babylon.js

Babylon.js is a real time 3D engine using a JavaScript library for displaying 3D graphics in a web browser via HTML5. The source code is available on GitHub and distributed under the Apache License 2.0.
History and progress.
It was initially released in 2013 under Microsoft Public License having been developed by two Microsoft employees, David Catuhe and David Rousset mostly in their free time as a side-project, helped by artist Michel Rousseau as a 3D game engine. It is based on an earlier game engine for Silverlight's WPF based 3D system.
Catuhe's side-project then became his full-time job, and his team's primary focus.
In 2015, it was presented at the WebGL Conference in Paris. As of 2018, it has more than 190 contributors and following its promotion and application in games, including one by Ubisoft. Its use has developed into a variety of fields such as:
Technical description.
The source code is written in TypeScript and then compiled into a JavaScript version. The JavaScript version is available to end users via NPM or CDN who then code their projects in JavaScript accessing the engine's API. The Babylon.js 3D engine and user code is natively interpreted by all the web browser supporting the HTML5 standard and WebGL to undertake the 3D rendering.
Modeling methodology.
The 3D modeling process used is that of polygon modeling with triangular faces to be represented by shell models. Limited use of constructive solid geometry is possible though only as a transitional method to create the union, subtraction and intersection of shell models. Once created models are rendered on an HTML 5 canvas element using a shader program which determines the pixel positions and colors on the canvas using the polygon models, the textures applied to each model, the scene camera and lights together with the 4 x 4 world matrices for each object which stores their position, rotation and scale. The technique used to produce photo realistic images is that of physically based rendering along with post-processing methods. In order to simulate collisions between models and other real world physical actions one of two physics engines need to be added as plugins, these are Cannon.js and Oimo. Animation involving, for example, changes in position or color of models is accomplished by key frame animation objects called animatables, while full character animation is achieved through the use of skeletons with blend weights.