# trigonometry to build rotating clock
from math import radians, atan2, sin, cos, degrees
from openexp.canvas import canvas
from openexp.keyboard import keyboard
import random
import time
import numpy as np
var.response ='None'
var.response_time= 0
var.press=0
clock_path = exp.pool[u'clock.png']
src = pool ['single_bip_700.wav']

#parameters
arm_len = 170# distance from the center
start_angle= var.angle
n_rev = 1 # nr. of revolutions
#speed =140.625
step_size =10 # displacement per frame
delay =20 #delay in milliseconds (duration at each position)

# Create a canvas
my_canvas = canvas(self.experiment)
#center coordinates
xc=0
yc=-15
# distance from the center
sx =var.sx
sy =var.sy

#sound
my_sampler= sampler(src, volume = .5)

#initialize the keyboard
my_keyboard = keyboard (exp, keylist=['space', 'h'],timeout = 0)

#random sound presentation 
var.play_time= random.randint(2,36)

#rotating frame
for time in range(0,n_rev*360, step_size):
	start_time = clock.time()
	var.start_time = start_time
	print ('this is start_time' + str(start_time)) #starting point of the loop
# The end points of the arm, relative to the center
	dx =arm_len* cos(radians(time+ start_angle))
	dy =arm_len* sin(radians(time+ start_angle))

	# Draw!
	my_canvas.clear()
	my_canvas.image(clock_path, x=0, y=0, scale= 0.50)
	my_canvas.line(xc, yc,xc+dx, yc+dy, fill = True, color = 'red', penwidth = 3)
	my_canvas.show()
	
	#collecting responses
	key,end_time= my_keyboard.get_key()
	if key == "h":
		exp.set('response', key)
		exp.set('response_time', end_time - start_time)