from utils.color import *
from active_projects.eop.reusables.eop_constants import *

def binary(i):
    # returns an array of 0s and 1s
    if i == 0:
        return []
    j = i
    binary_array = []
    while j > 0:
        jj = j/2
        if jj > 0:
            binary_array.append(j % 2)
        else:
            binary_array.append(1)
        j = jj
    return binary_array[::-1]

def nb_of_ones(i):
    return binary(i).count(1)


def rainbow_color(alpha):
    nb_colors = 100
    rainbow = color_gradient([RED, ORANGE, YELLOW, GREEN, BLUE, PURPLE], nb_colors)
    rainbow = np.append(rainbow,PURPLE)
    index = int(alpha * nb_colors)
    return rainbow[index]

def graded_color(n,k):
    if n != 0:
        alpha = float(k)/n
    else:
        alpha = 0.5
    color = interpolate_color(GRADE_COLOR_1, GRADE_COLOR_2, alpha)
    return color