Graphmath.Mat33.apply_left

You're seeing just the function apply_left, go back to Graphmath.Mat33 module for more information.
Link to this function

apply_left(v, a)

Specs

apply_left(vec3(), mat33()) :: vec3()

apply_left( v, a ) transforms a vec3 by a mat33, applied on the left.

a is the mat33 to transform by.

v is the vec3 to be transformed.

This returns a vec3 representing v**A**.

This is the "full" application of a matrix, and uses all elements.