Katana - Rust-based 3D slicer

[Work in progress]

This workspace contains 3 programs:

1. katana-core - Application that processes STLs and slices them
2. katana-cli - CLI interface for katana-core
3. katana-viewer - GUI application based on eframe (for the interface) and glow (for GPU rendering with OpenGL) to visualize the slices.

Getting started

• cargo build
• cargo run -p katana-viewer -- stls/liver.stl

TODO list

• SLT parsing (bin and ASCII)
• Parameterizes slicing and toolpathing powered by nalgebra and i_overlay
• Rectilinear infill
• GPU-rendered visualizer built on eframe and glow
• Calculate travel moves and segment connections
  • Fix issue where all layer travels start from 0,0
• Horizontal slider
  • Render scrubber nozzle
• G-code export
  • Add BambuSlicer compatibility
• UI overhaul
  • Select file to slice
  • Add "slice" button (default open just mesh)
  • Add controls in UI for slicing params
  • Split status info in a separate collapsible box
• Add head bed rendering and model translation + rotation before slicing
• Port to browser-compatible
• Add more infill patterns
• Add support for supports
• Retraction
• Seam placement
• Skirts
• Brims
• Prime tower

Bugs to fix

• Fix origin point of exported G-code
• Fix slicing artifacts
  • Surfaces below max z don't get surface infill
  • Holes in the top layer get covered by surface infill
  • Liver slice artifact on layer 280

Rendering performance improvements

• Implement instanced rendering to avoid loading 20gb of triangle meshes into memory
• Use impostor rendering to render instances with 1 quad each instead of tens of vertices
• Migrate renderer to WebGPU!
  • Implement wgpu performance improvements

Rendering quality improvements

• Rendering toolpaths with thickness
• Fix bug where filaments are clipped by next layer
• Hide tube insides with ball geometry
  • Fix issue where smooth curves look like a bunch of balls
  • Replace tubes with rhombuses following Bambu approach