#!/usr/bin/python3
# -*- coding: utf-8 -*-
# -*- mode: Python -*-


'''

This generator print different squar from big to small.
The purepose is to see the difference of brightness with the length

v0.1.0

LICENCE : CC

by lapin (aka nipal)

'''

from __future__ import print_function
import time
import argparse
import sys
import math

name="generator::endingPoint"


def debug(*args, **kwargs):
    if( verbose == False ):
        return
    print(*args, file=sys.stderr, **kwargs)

argsparser = argparse.ArgumentParser(description="dummy generator")
argsparser.add_argument("-f","--fps",help="Frame Per Second",default=30,type=int)
argsparser.add_argument("-s","--speed",help="point per frame progress",default=3,type=int)
argsparser.add_argument("-v","--verbose",action="store_true",help="Verbose output")
args        = argsparser.parse_args()

fps=args.fps
verbose=args.verbose
optimal_looptime = 1 / fps
debug(name+" optimal looptime "+str(optimal_looptime))

width = 800
height = 800
offset = 50

white = 0xFFFFFF
blank = 0x0

shape = []

def	set_shape():
	nb_spire = int(width / (2 * offset)) - 1
	for i in range(1, nb_spire + 1):
		shape.append([        i * offset,          i * offset, blank])
		shape.append([        i * offset,          i * offset, white])
		shape.append([        i * offset, height - i * offset, white])
		shape.append([width - i * offset, height - i * offset, white])
		shape.append([width - i * offset,          i * offset, white])
		shape.append([        i * offset,          i * offset, white])
		shape.append([        i * offset,          i * offset, blank])

set_shape()

while True:
  start = time.time()
  print(shape, flush=True);
  looptime = time.time() - start
  if( looptime < optimal_looptime ):
    time.sleep( optimal_looptime - looptime)
    debug(name+" micro sleep:"+str( optimal_looptime - looptime))