Ha.nnes.dev

Linear algebra library for small vectors and matrices in Roc.

Example

Import a matrix and vector type.

import linalg.Matrix4x4
import linalg.Vector4

Vectors are just tuples.

vecA = (1, 2, 3, 4)
Stdout.line! "Vector a is $(Vector4.display vecA)."
vecB = (5, 6, 7, 8)
Stdout.line! "Vector b is $(Vector4.display vecB)."

Vector a is [1, 2, 3, 4].
Vector b is [5, 6, 7, 8].

Vectors have various vector-y functions that work how you’d expect.

vecC = Vector4.add vecA vecB
Stdout.line! "The sum of a and b is $(Vector4.display vecC)."
aDotB = Vector4.dot vecA vecB
Stdout.line! "The dot product of a and b is $(Num.toStr aDotB)."

The sum of a and b is [6, 8, 10, 12].
The dot product of a and b is 70.

Matrices are opaque types.

mat = Matrix4x4.fromDiagonal vecC

Matrices also have matrix-y functions.

det = Matrix4x4.determinant mat
Stdout.line! "The determinant of the matrix is $(Num.toStr det)."

The determinant of the matrix is 5760.