""" Soft scope prototype demo.

Generate a 10 kHz samples sine wave and plot it live.

"""

import math

import time

import random

import threading

from lognplot.qt.qtapi import QtWidgets

from lognplot.qt.widgets import SoftScope

def main():

app = QtWidgets.QApplication([])

scope = SoftScope()

t1 = threading.Thread(target=gen_data, args=(scope.add_samples,), daemon=True)

t1.start()

scope.show()

app.exec()

def gen_data(add_samples):

ts = 0.0001

t = 0

dt = 0.02

F = 400

F2 = 3

chunk_size = int(dt / ts)

while True:

samples = []

samples2 = []

for _ in range(chunk_size):

v = 4 * math.sin(t * math.pi * 2.0 * F) - 2

samples.append((t, v))

v2 = 6 * math.sin(t * math.pi * 2.0 * F2) + 5 + 0.1 * random.random()

samples2.append((t, v2))

# Increment time:

t += ts

add_samples("C1", samples)

add_samples("C2", samples2)

time.sleep(dt)

if __name__ == "__main__":

main()