imath ☆

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Description:
Library of 2D and 3D vector, matrix, and math operations

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c-plus-plus mathematics graphics vfx library 3d

Install: brew install imath

About:
Imath is a foundational, open-source C++ library providing a robust framework for 2D and 3D vector, matrix, and math operations. It is the core mathematics library used by industry-standard tools like OpenEXR and is designed for high-performance graphics and imaging applications. The library emphasizes accuracy, performance, and ease of integration for developers building geometric and arithmetic systems.

Key Features:

Comprehensive C++ library for vector, matrix, and quaternion math
Optimized for performance in graphics and imaging workflows
Provides half-precision floating-point types (float16)
Industry-standard core used by OpenEXR and other VFX tools

Use Cases:

Developing computer graphics and rendering engines
Building high-performance image processing applications
Implementing geometric algorithms in VFX and animation software

Alternatives:

GLM – GLM is a header-only library focused on OpenGL shading language (GLSL) syntax, whereas Imath is a more general-purpose C++ library with a focus on production-grade stability.
Eigen – Eigen is a powerful, template-heavy linear algebra library focused on general matrix operations, while Imath is more specialized for graphics and media applications.

Version History

Detected	Version	Rev	Change	Commit
Oct 9, 2025 2:21am		0	VERSION_BUMP	23c53962
Sep 10, 2025 10:05am		0	VERSION_BUMP	737bc419