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#!/usr/bin/python

#######################################################

# Copyright (c) 2015, ArrayFire

# All rights reserved.

#

# This file is distributed under 3-clause BSD license.

# The complete license agreement can be obtained at:

# http://arrayfire.com/licenses/BSD-3-Clause

########################################################

import arrayfire as af

import math

POINTS = 10000

PRECISION = 1.0 / float(POINTS)

val = -math.pi

X = math.pi * (2 * (af.range(POINTS) / POINTS) - 1)

win = af.Window(512, 512, "2D Plot example using ArrayFire")

sign = 1.0

while not win.close():

Y = af.sin(X)

win.plot(X, Y)

X += PRECISION * sign

val += PRECISION * sign

if (val > math.pi):

sign = -1.0

elif (val < -math.pi):

sign = 1.0