from stimuli.SinusoidalStepStimulus import SinusoidalStepStimulus
from stimuli.SinusAmplitudeModulation import SinusAmplitudeModulationStimulus
import numpy as np
import matplotlib.pyplot as plt


def main():
    stimuli_protocol_examples()
    pass


def stimuli_protocol_examples():

    fig, axes = plt.subplots(2, 1)

    start = 0
    end = 1

    time_start = -0.2
    time_end = 1.2
    step_size = 0.00005

    frequency = 55
    contrast = 0.5

    # Sinusoidal STEP stimulus
    # frequency, contrast, start_time=0, duration=np.inf, amplitude=1
    step_stim = SinusoidalStepStimulus(frequency, contrast, start, end - start)

    values = step_stim.as_array(time_start, time_end - time_start, step_size)
    time = np.arange(time_start, time_end, step_size)

    axes[0].plot(time, values)
    axes[0].set_ylabel("Voltage [mV]")

    # SAM Stimulus:
    mod_freq = 10
    step_stim = SinusAmplitudeModulationStimulus(frequency, contrast, mod_freq, start, end - start)

    values = step_stim.as_array(time_start, time_end - time_start, step_size)
    time = np.arange(time_start, time_end, step_size)
    plt.plot(time, values)

    beat_time = np.arange(start, end, step_size)
    beat_values = np.sin(beat_time * 2 * np.pi * mod_freq) * contrast + 1
    axes[1].plot(beat_time, beat_values)

    axes[1].set_xlabel("Time [s]")
    axes[1].set_ylabel("Voltage [mV]")

    plt.savefig("thesis/figures/stimuliExamples.pdf")
    plt.close()


if __name__ == '__main__':
    main()