double vec4::operator<=(const vec4& v)
{
return this->length()<=v.length();
}
double vec4::operator>(const vec4& v)
{
return this->length()>v.length();
}
static vec4 normalize (const vec4& input)
{
float length = input.length();
return (length > 0.0f ? input / length : input);
}
