graphene:vec3-init (v x y z)

v -- a graphene:vec3-t instance
x -- a number coerced to a float with the x field of the vector
y -- a number coerced to a float with the y field of the vector
z -- a number coerced to a float with the z field of the vector

The initialized graphene:vec3-t instance.

Initializes a graphene:vec3-t instance using the given values. This function can be called multiple times.