SDF Collision Simulation

A real-time particle collision simulation using Signed Distance Fields (SDF) and OpenGL rendering.

Overview

This project simulates particle collision with 3D mesh objects using SDF for efficient collision detection. Particles bounce around in a bounded box environment and interact with loaded mesh geometry.

Features

• SDF generation from 3D mesh files (.obj format)
• Real-time particle physics simulation
• OpenGL-based 3D rendering
• BVH (Bounding Volume Hierarchy) optimization for performance
• Interactive collision detection

Setup

1. Place your .obj mesh file in the data/ directory as stanford-bunny.obj
2. Build and run the simulation

Usage

# Build the project
mkdir build && cd build
cmake ..
make

# Run simulation with default resolution (64x64x64)
./sdf_simulation

# Run with custom SDF resolution
./sdf_simulation 128

Project Structure

• src/ - Source code files
  • sdf.* - Signed Distance Field generation and sampling
  • particle.* - Particle system implementation
  • simulation.* - Physics simulation loop
  • renderer.* - OpenGL rendering system
  • mesh.* - 3D mesh loading and processing
  • bvh.* - Bounding Volume Hierarchy for optimization
• data/ - Place your mesh files here (requires stanford-bunny.obj)
• build/ - Build output directory

Controls

• ESC: Exit
• Mouse: Rotate camera