@Plan

2021 Roadmap for "New Curv"
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The long term goal is a major redesign of Curv:

* A more powerful language with new syntax, and more efficient runtime.
* A more powerful, optimizing GPU compiler.
* A faster, more powerful GPU rendering engine that uses compute kernels.
* A more powerful, more general purpose set of graphics primitives.
* A new user interface.

The current priority list for 2021 is:

1. Language Design Bible (< new language)
2. New Language (< new SubCurv compiler)
    High Level (as a modelling language)
     * simpler, more regular syntax
     * 'time' variable for animation
    Low Level (as a library implementation language)
     * Imperative programming
     * Better error messages
       * efficient type checking in function parameters
     * Modular programming (named functions, modules, constructors)
     * Data abstraction: new representation of Shape, Colour
     * Compact typed data structures (huge typed arrays)
3. New SubCurv compiler
    * SubCurv supports a larger Curv subset. distance functions are SubCurv.
    * parametric shapes and 'time' expressions support full Curv.
    * new SubCurv+Curv unified IR and partial evaluator.
    * generate compact and efficient C++, GLSL. EGG based optimizer?
    * leave room for a fast JIT compiler back end, eg Cranelift.
    * leave room for a WASM port.
4. New Runtime
    * Runtime uses C data structures and functions. Export a module as C++ with
      C interface, import a .so/.dll encoded module. Integrate w. other langs.
    * Huge constants in GLSL (buffers), C++ for mesh export (use JIT instead?)
5. WebGPU port

Which enables:
* Advanced GPU programming in SubCurv, with compute shaders, etc.
* Fast GPU rendering. Fast large unions. Voxel shape representation.
* Import images and voxel grids as Curv values. Import STL as voxels.
* Interactive animations with mouse input, maybe webcam input.

And beyond:
* new integrated GUI
* networked package manager
* integrate w. other langs (via their C FFI, their C API, WebIDL, files, ...)
  Compare to: hpyproject.org for Python, nodejs.org/api/n-api.html for JS.
* Sandboxed file i/o: a persistent mutable workspace.
  Better integration with external files; reading and writing more file formats.
* rewrite Curv compiler in Curv?