import subprocess
import numpy as np
from scipy.spatial import ConvexHull
from io import StringIO
import re
import pygame, time

N = 6
WINDOW_SIZE=720
POINT_RANGE=5000

pygame.init()

low, high = -POINT_RANGE, POINT_RANGE
DISP_H, DISP_W = WINDOW_SIZE, WINDOW_SIZE
disp = pygame.display.set_mode((DISP_W, DISP_H))

def transform(pt):
    return int((pt[0] - low) / (high - low) * DISP_W * 0.75 + DISP_W * 0.125), int((pt[1] - low) / (high - low) * DISP_H * 0.75 + DISP_H * 0.125)

def clear():
    disp.fill((0,0,0))

def update():
    pygame.display.update()

def showPoint(p, color):
    pygame.draw.circle(disp, color, transform(p), 2, 1)

def showCircle(p, r, color):
    rr = int(r * DISP_H / (high-low) * 0.75)
    pygame.draw.circle(disp, color, transform(p), rr, min(1,rr))

def showHull(ch):
    print(ch)
    print(tuple(map(transform,ch)))
    pygame.draw.polygon(disp, (0,100,100), tuple(map(transform,ch)), 4)

def run(executable, input):
    proc = subprocess.run([executable], input=input,stdout=subprocess.PIPE, encoding='UTF-8')
    outp = StringIO(proc.stdout)
    return outp.read()

def check(n):
    br = True
    while br:
        pygame.display.update()
        time.sleep(0.01)
        for event in pygame.event.get():
            if event.type == pygame.KEYDOWN:
                br = False
    clear()

    pts = np.random.randint(low=low, high=high, size=(n, 2))
    pts = np.array(list(set(map(tuple,pts.tolist()))))

    try:
        ch = list(ConvexHull(pts).vertices)
        showHull(list(map(lambda x : pts[x], ch)))
        if len(ch) < 3:
            print('retry')
            return True
    except Exception as e:
        print(e)
        print('retry')
        return True
    input = StringIO()
    print(len(pts), file=input)
    for pt in range(len(pts)):
        showPoint(pts[pt], (255,0,0))
        print(pts[pt][0], pts[pt][1], file=input)

    a = run('./mainN', input.getvalue())

    am = re.match(r"([0-9-.]+)[^0-9-.]+([0-9-.]+)[^0-9-.]+([0-9-.]+)", a)
    print(a)
    print(am.groups())
    ar, ax, ay = float(am.group(1)), float(am.group(2)), float(am.group(3))

    showCircle((ax,ay), ar, (247, 144, 0))

    f = open('test', 'w')
    f.write(input.getvalue())
    f.close()

    update()

i = 0
while True:
    check(N)
    print(i)
    i += 1