length function

double length(
  1. List<double> a
)

Calculates the length of a vec3

@param {ReadonlyVec3} a vector to calculate length of @returns {Number} length of a

Implementation

double length(List<double> a) {
  final x = a[0];
  final y = a[1];
  final z = a[2];
  return hypot([x, y, z]);
}