use gtk::gdk::RGBA;
use num_traits::Num;

pub fn get<T>(levels: &Vec<T>, colors: &Vec<RGBA>, v: T) -> RGBA
where
    T: Num + PartialOrd + Copy,
{
    let len = levels.len();

    let mut left = 0;
    let mut right = len - 1;

    while left < right - 1 {
        let middle = (right + left) / 2;
        if v > levels[middle] {
            left = middle;
        } else {
            right = middle;
        }
    }

    colors[left]
}