element.version === currentVersion)) { versionNodes.unshift({ version: currentVersion, url: "#" }); } document.querySelector("#project-version").innerHTML = versionNodes.reduce( (acc, element) => { const status = currentVersion === element.version ? "selected disabled" : ""; return ` ${acc} `; }, `
quaterni · v1.1.0

quaterni - v1.1.0

Quaterni

Package Version Hex Docs

Pure Gleam quaternion math library for 3D rotations.

Quaternions are a mathematical representation of rotations in 3D space that:

  • Avoid gimbal lock - no singularities in rotation representation
  • Provide smooth interpolation - spherical linear interpolation for natural animation
  • Are more compact than rotation matrices (4 floats vs 9)
  • Compose efficiently - quaternion multiplication is fast

Installation

gleam add quaterni

Quick Start

import quaternion
import vec/vec3

// Create quaternion from axis-angle
let rotation = quaternion.from_axis_angle(vec3.Vec3(0.0, 1.0, 0.0), 1.57)

// Rotate a vector
let point = vec3.Vec3(1.0, 0.0, 0.0)
let rotated = quaternion.rotate(rotation, point)

// Interpolate between rotations
let halfway = quaternion.spherical_linear_interpolation(from: rot1, to: rot2, t: 0.5)

Documentation

Full documentation can be found at https://hexdocs.pm/quaterni.

Development

gleam test  # Run the test suite
gleam format  # Format code
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