syoyo/tinyobjloader
Tinyobjloader
TinyOBJLoader is a single-header C++ library designed for parsing Wavefront OBJ files. It functions as a stream-based text parser that extracts vertex, normal, and texture data into structured arrays for use in graphics and physics engines.
The project distinguishes itself as a high-performance geometry loader that utilizes multi-threading to distribute the processing of large-scale 3D environments across multiple CPU cores. It includes a mesh triangulator that converts complex polygons into triangles to ensure compatibility with standard graphics hardware.
The library supports a variety of geometry processing capabilities, including the extraction of complex primitives such as lines and points. It provides configurable 32-bit or 64-bit floating-point precision for high-fidelity rendering and allows for custom loading logic to override memory allocation and input-output backends.
Integration is handled through a single-header distribution model, eliminating the need for a complex build or installation process.
Features
- Wavefront OBJ Parsers - Reads 3D geometry from Wavefront OBJ files and converts it into structures for graphics and physics engines.
- 3D Polygon Triangulation - Converts faces with four or more vertices into triangles using internal algorithms or external triangulation libraries.
- 3D Model Importers - Imports vertex, normal, and material data from model files into memory-efficient structures for rendering pipelines.
- Polygon Triangulators - Converts faces with more than three vertices into triangles to ensure compatibility with standard graphics hardware.
- Multi-Threaded Geometry Parsing - Distributes the processing of large 3D model files across multiple CPU cores to reduce scene loading times.
- Stream-Based Text Processing - Reads raw text input sequentially to minimize memory overhead when converting files into structured vertex arrays.
- Large-Scale Geometry Ingestion - Uses multithreading and stream-based parsing to load massive 3D environment files while minimizing memory overhead.
- Header-Only Libraries - Implements a header-only distribution model that allows for quick integration of 3D model loading logic.
- Single-Header Libraries - Distributed as a single-header library to eliminate complex build or installation processes.
- High Precision Geometry Calculations - Processes vertex and material data using 32-bit or 64-bit floating point precision for high-performance computing tasks.
- Precision-Switched Float Builds - Supports build-time selection between 32-bit and 64-bit floating-point precision to balance performance and model fidelity.
- Large Dataset Optimizations - Accelerates the parsing of massive datasets using single-pass buffer processing, multithreading, and memory-mapped I/O.
- Mesh and Model Loading - Wavefront OBJ loader.
