xD3

xD3 is a fictional declarative language and runtime designed to describe three-dimensional data and processing pipelines. It combines aspects of data description languages with 3D graphics concepts, enabling concise definitions of meshes, materials, lighting, and animation in a single source. It is presented here for illustrative purposes and does not correspond to a real-world standard.

Design goals include readability, portability, and deterministic translation to lower-level graphics pipelines. Programs in xD3 specify a scene graph, with nodes representing geometry, shaders, textures, and effects. The language provides typed abstractions for geometric primitives, materials, transforms, and animations, along with a module system and importable libraries.

Syntax and semantics: xD3 favors declarative specifications, with a functional flavor and optional imperative blocks for specialized tasks. It supports pattern matching, generics, and a small standard library for common 3D operations. Tooling includes a compiler, a validator, and a scene export stage to common formats such as glTF or USD.

Usage and ecosystem: In the hypothetical community, xD3 is used for prototyping scenes, teaching graphics concepts, and exploring reproducible pipelines. The runtime includes a lightweight interpreter and a renderer plugin that can run on existing engines.

Reception: As a fictional construct, xD3 is discussed in academic and speculative contexts to illustrate future language features for 3D data description, rather than as a deployed technology.