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Arslan A.
Arslan A.

Posted on AI-assisted

Limoni: A zero-allocation, 60+ FPS TUI library for Go with 3D mesh rendering, Kitty/Sixel graphics & TEA runtime

#go #tui #cli #devops

Limoni Terminal UI

Hey everyone! πŸ‘‹

I've been building Limoni, a Terminal User Interface (TUI) engine for Go written from scratch with a strong focus on rendering throughput, zero allocations on the hot draw path, and rich visual capabilities.

Here is a quick breakdown of what it brings to the table out of the box:

πŸš€ Key Features

  • 3D Graphics Engine: Wavefront OBJ, STL, and PLY loader, Lambertian & Gouraud depth-buffer shaders, and texture mapping rendered directly in your terminal using 2x4 Braille subpixels.
  • Hardware Image Drivers: Native support for Kitty Graphics Protocol, Sixel, and iTerm2 with automatic ANSI half-block fallback.
  • Strict Unicode & Emoji Safety: Table-driven East Asian Width (EAW) calculation and continuation cell tracking β€” wide emojis (πŸ”΄, πŸš€) won't corrupt rows or shred borders when dragging modal dialogs.
  • The Elm Architecture (TEA): Predictable state updates with concurrent goroutine commands and deterministic event delivery.
  • Zero Heap Allocations on Render: Contiguous 1D memory buffer ([]cell.Cell) and an ANSI differential engine that emits minimal escape bytes with \x1b[?2026h synchronized output.
  • Simple Single-Import API: Modern fluent builders (limoni.NewBlock(), limoni.NewTable(), limoni.SplitVertical()) so you don't have to juggle dozens of disjointed subpackages.

πŸ”— Links & Resources

I would love to hear your feedback, thoughts on the API ergonomics, or edge-case terminal bug reports!

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