linuxcnc-sim v0.1.0

linuxcnc-sim is an early experimental standalone CNC machine simulator for
LinuxCNC. It emulates motion hardware behind LinuxCNC instead of independently
interpreting G-code. LinuxCNC remains responsible for interpretation, trajectory
planning, coordinate systems, offsets and compensation.

Highlights

• Four simulated step axes and configurable scales through the original
  Stepper-Ninja HAL/UDP interface.
• Virtual digital inputs, limit switches and LinuxCNC homing interaction,
  plus a configurable point/plane probe input.
• Interactive console, motion recording and CSV export.
• OpenGL visualization, machine-space workpiece placement and sparse voxel stock.
• Persistent flat-end material removal with continuous sweeps and exact batching.
• Simulator INI configuration, CLI overrides and startup configuration inspection.

Current limitations

Experimental development software; not a machine safety system.

Geometry is millimetre-based with a flat-end cutter only. There is currently no
geometric stock probing, toolsetter, spindle/holder simulation, general collision
detection, or rotary material transform.

Performance and voxel resolution are workload-dependent; this is not a hard-real-time
or CAD-exact machining guarantee.

Stepper-Ninja

Stepper-Ninja, by Zsolt Viola, provides the existing HAL driver and protocol used
as the current interface. linuxcnc-sim does not claim authorship of that code.

This choice does not require a later physical CNC machine to use Stepper-Ninja
hardware. Other adapters are possible future work.

linuxcnc-sim is MIT-licensed; the bundled Stepper-Ninja files preserve their
separate original MIT license and attribution.

See the README, configuration guide and release validation documentation for
installation, configuration and validation details.