Path Generator

A Python library for generating human-like mouse paths using PD (Proportional-Derivative) control.

Installation

Core Library

Install the core library (only requires numpy):

pip install pathgenerator

With Windows Emulator

Install with pywin32 for high-performance cursor emulation (Windows only):

pip install pathgenerator[windows]

With Server

Install with the optional FastAPI server:

pip install pathgenerator[server]

Usage

Human Motion Parameters

• mouse_velocity: Base movement velocity (unitless, 0.1-1.0).
• kp_start / kp_end: Correction strength at start vs. end.
• stabilization: Damping factor to smooth out jitters (0.0-1.0).
• noise: Amount of random hand tremor (0.0-10.0+).
• overshoot_prob: Probability of overshooting the target and correcting (0.0-1.0).
• arc_strength: Tendency to move in a curved arc (0.0-0.5).
• keep_prob_start / keep_prob_end: Point density (drop probability) at start/end.
• offset_x / offset_y: Global offset added to all points.

Generating Paths

from pathgenerator import PDPathGenerator

gen = PDPathGenerator()
path, progress, steps, params = gen.generate_path(
    start_x=100.0, start_y=100.0,
    end_x=1800.0, end_y=900.0,
    mouse_velocity=0.65,
    noise=2.6,
    offset_x=0, offset_y=0  # Optional viewport offset
)

Tuning Workflow (Server + JSON)

The easiest way to find realistic parameters is to use the interactive playground. (Requires: pip install pathgenerator[server])

1. Launch the server:

   python -m pathgenerator.server
   

2. Tune settings at http://127.0.0.1:8001.
3. Download JSON: Click "Export Preset" to save your settings as human_relaxed.json.
4. Load in Python:

   # Initialize generator with your custom preset
   gen = PDPathGenerator("human_relaxed.json")
   
   # All generated paths will now use those settings by default
   path, *_ = gen.generate_path(100, 100, 500, 500)
   

Executing Paths (Windows Only)

The PathEmulator class includes a helper get_position() to simplify generating paths from your current mouse location.

from pathgenerator import PDPathGenerator, PathEmulator

# Requires: pip install pathgenerator[windows]
emulator = PathEmulator()
gen = PDPathGenerator()

# 1. Get current mouse position
start_x, start_y = emulator.get_position()

# 2. Generate path to target (e.g., 500, 500)
# calculate offset if you are targeting a window relative to screen 0,0
path, *_ = gen.generate_path(start_x, start_y, 500, 500)

# 3. Move the mouse (optional delay to control playback speed)
emulator.execute_path(path, delay_between_points=0.001)