About Ballistics Toolkit

Project Overview

Tools in the Suite

Ballistics Toolkit currently includes a set of calculators and simulators that share the same WebAssembly ballistics engine:

• 📊 Ballistic Calculator – trajectory tables with G1/G7 drag models, atmosphere, wind, and optional spin effects.
• ⚖️ Load Comparison – side‑by‑side comparison of two loads (drop, drift, velocity, energy, time).
• 🎛️ Performance Matrix – BC/MV grid showing wind drift, drop, velocity, energy, and MV sensitivity with color‑coded cells.
• 🎯 Target Simulator – Monte‑Carlo target simulations with realistic accuracy and wind variability.
• 🌬️ Wind Simulator – standalone view of the curl‑noise wind field that powers the simulators.
• 🎮 F‑Class Simulator – interactive 3D F‑Class match simulator (300–1000 yards) with mirage and flags.
• 🔩 Steel Target Simulator – interactive steel range with reactive targets, mirage, hunting mode, and impact visuals.

How It Works

• WebAssembly: Emscripten compilation for fast performance
• Algorithms: 2nd-order Runge-Kutta (RK2) integration for trajectory calculations
• Drag Models: G1 and G7 standard drag functions
• Atmosphere: Uses temperature, humidity, and altitude inputs. Atmospheric pressure is calculated automatically from altitude.
• Spin Aerodynamics: 4DOF trajectory with simplified, empirically tuned spin effects.
• Wind Modeling: 2D curl field from time varying 3D Simplex noise with multi-octave components.
• Focus: Depth-of-field style blur in the scope view, using a depth texture and thin‑lens model (focal distance, f‑number, sensor width) to weight a separable Gaussian blur.
• Mirage: Post-process heat-shimmer shader that samples 3D simplex noise and the wind field along the line of sight at the focal distance, with distortion strength modulated by FOV, focal distance, and wind speed.
• Three.js & Shaders: WebGL rendering built on Three.js with custom materials and post-processing passes for scopes, mirage, and particle effects.
• Steel Target Physics: Hanging targets with simple rigid-body style motion—momentum transfer, damping, and rotation—so center impacts swing and edge hits induce spin.
• Impact & Dust Effects: Instanced impact marks on steel and ground plus particle-based dust clouds whose visibility responds to impact location, zoom, and environment.
• Scopes: Pointer-lock rifle and spotting scopes with true FFP-style reticles and angular units matched to the underlying ballistics (MRAD/MOA).
• Shared Engine: Calculators, simulators, and the Performance Matrix all use the same underlying ballistics core so results stay consistent between tools.

Why Ballistics Toolkit

Contact & Support