portfolio.io
🎨 Project Portfolio
A visual showcase of my personal projects in computer graphics, geometry, and simulation.
📐 Algorithmic Geometry
2D Point Cloud Mesher — Lawson-based Delaunay Builder
An interactive Delaunay mesh generator for 2D point sets.
Technologies: C++ OpenGL ImGui Computational Geometry
What it does
- Builds a Delaunay triangulation from arbitrary 2D points using an iterative Lawson approach.
- Live insertion of points with mesh re-triangulation.
Live demos
Iterative vertex insertion with Delaunay constraints.
|
Interactive insertion
Drop points by hand; the triangulation updates continuously and preserves Delaunay and convexity criterion. |
| 🔗 View Repository | 📄 Technical Details (in french) |
Mesh Surface Generator
Interactive 3D geometry construction from Bézier patches, revolution surfaces, and implicit fields
Technologies: C++ OpenGL ImGui Computational Geometry
Overview
An interactive tool for generating 3D meshes from multiple geometric representations: parametric curves and surfaces, revolution profiles, and volumetric implicit fields. Features real-time editing with adjustable control point grids and resolution settings.
Revolution Surfaces
Surface generated by defining a radial function around a profile curve.
Features:
- Custom profile Bézier curves
- Parametric radial functions with angular and height variation
- Real-time preview with adjustable tessellation
Bézier Patch Modeling
Interactive Bézier patches with adjustable control grid resolution (8×8, 16×16, 24×24, 31×31).
Capabilities:
- Bicubic Bézier surface patches
- Parametric surface functions:
x(u,v),y(u,v),z(u,v) - Variable control point density for smooth or detailed surfaces
Bézier Spline Modeling
Curves generated from customizable spline profiles with adjustable control points (4, 8, 16, 31).
Spline Types:
- Bézier curves with Bernstein polynomial basis
- Parametric curve functions:
x(t),y(t),z(t)
Implicit Surfaces via Marching Cubes
Mesh extraction from signed distance fields (SDF) using the marching cubes algorithm.
Implementation:
- Custom SDF evaluation functions
- Support for CSG operations (union, intersection, difference)
Real-time Polygonization of Complex CSG Implicit Surfaces
🌟 Image Synthesis
Ray Tracing
Custom ray tracer on Shadertoy
Ray tracing - geometric primitives, transformations and procedural textures.
Technologies: GLSL Shadertoy Real-time Rendering
Key Features:
Geometric Primitives Spheres, boxes, ellipsoid, planes, capsule, cylinder |
Spatial Transformations Translation, rotation, scaling, shearing |
Procedural Textures Materials and surface patterns |
Advanced Lighting Reflections, ambient occlusion and shadows |
🔍 Image Analysis & Processing
Geometric Shape Detection - Hough Transform
Automatic detection of lines and circles in images
Line detection |
Circle detection |
Technologies: C++ OpenCV Image processing
Features:
- Line detection using classical Hough transform
- Circle detection with Hough variations
Image Segmentation - Region Growing
Segment images based on pixel similarity using region growing algorithm
Seed Positioning |
Region Segmentation |
Region border |
Technologies: C++ OpenCV Image Processing
Implementation:
- Multi-seed region growing
- Adaptive threshold selection
- Connected component analysis
🌊 Physics Simulation
Fluid Simulation - SPH Method
Real-time fluid dynamics using Smoothed Particle Hydrodynamics (SPH)
Technologies: C++ OpenGL Real-time Simulation
Features:
- Particle-based fluid simulation with 10k+ particles
- Pressure, viscosity, and surface tension forces
- Real-time rendering with optimized spatial hashing
Terrain Analysis and Synthesis - Stream power erosion
Procedural terrain generation and analysis through hydrological metrics and hydraulic erosion
Technologies: C++ OpenGL Real-time Simulation
Features:
- Hierarchical OOP architecture (ScalarField / HeightField) for grid processing
- Terrain analysis: Gradient, Laplacian, Stream Area and Wetness Index
- Physically-based erosion models: Stream Power (∂z/∂t)
📄 View report 1 (in french) 📄 View report 2 (in french)
Cloth Simulation - Mass-Spring System
Realistic fabric deformation using mass-spring dynamics
Mass-spring - box collision detection |
Mass-spring - sphere collision detection |
Technologies: C++ Physics Engine Real-time Simulation
Physics:
- Structural, shear, and bend springs
- Collision detection and response
- Wind forces and gravity
🔗 Contact
Main Profile: github.com/tgrillon
✉️ Email: theogrillon6f9@gmail.com
🔷 LinkedIn: linkedin.com/in/théo-grillon