Experiment drawing methods

expyfun provides multiple methods for drawing simple screen objects.

exp_name: test
date: 2023-07-25 19_08_16.935269
file: /home/circleci/project/examples/experiments/drawing_methods.py
participant: 2
session: 1
2023-07-25 19:08:16,935 - INFO    - Expyfun: Using version 2.0.0.dev0 (requested dev)
2023-07-25 19:08:16,936 - INFO    - Expyfun: Setting up sound card using pyglet backend with 2 playback channels
2023-07-25 19:08:17,123 - WARNING - Expyfun: Mismatch between reported stim sample rate (24414) and device sample rate (44100.0). Experiment Controller will resample for you, but this takes a non-trivial amount of processing time and may compromise your experimental timing and/or cause artifacts.
2023-07-25 19:08:17,123 - INFO    - Expyfun: Setting up screen
2023-07-25 19:08:17,152 - EXP     - Expyfun: Set screen visibility True
2023-07-25 19:08:17,160 - INFO    - Initialized [600 600] window on screen XlibScreen(display=<pyglet.canvas.xlib.XlibDisplay object at 0x7f1a95b502b0>, x=0, y=0, width=1400, height=900, xinerama=0) with DPI 69.73
2023-07-25 19:08:17,161 - INFO    - Expyfun: Initializing dummy triggering mode
2023-07-25 19:08:17,162 - INFO    - Expyfun: Initialization complete
2023-07-25 19:08:17,162 - EXP     - Expyfun: Participant: 2
2023-07-25 19:08:17,162 - EXP     - Expyfun: Session: 1
2023-07-25 19:08:17,753 - INFO    - Expyfun: Exiting
2023-07-25 19:08:17,758 - EXP     - Expyfun: Audio stopped and reset.

# Author: Eric Larson <larsoner@uw.edu>
#
# License: BSD (3-clause)

import numpy as np

from expyfun import visual, ExperimentController
import expyfun.analyze as ea

print(__doc__)


with ExperimentController('test', session='1', participant='2',
                          full_screen=False, window_size=[600, 600],
                          output_dir=None, version='dev') as ec:
    ec.screen_text('hello')

    # make an image with  alpha the x-dimension (columns), RGB upward
    img_buffer = np.zeros((120, 100, 4))
    img_buffer[:, :50, 3] = 1.0
    img_buffer[:, 50:, 3] = 0.5
    img_buffer[0] = 1
    for ii in range(3):
        img_buffer[ii * 40:(ii + 1) * 40, :, ii] = 1.0
    img = visual.RawImage(ec, img_buffer, scale=2.)

    # make a line, rectangle, diamond, and circle
    line = visual.Line(ec, [[-2, 2, 2, -2], [-2, 2, -2, -2]], units='deg',
                       line_color='w', line_width=2.0)
    rect = visual.Rectangle(ec, [0, 0, 2, 2], units='deg', fill_color='y')
    diamond = visual.Diamond(ec, [0, 0, 4, 4], units='deg', fill_color=None,
                             line_color='gray', line_width=2.0)
    circle = visual.Circle(ec, 1, units='deg', line_color='w', fill_color='k',
                           line_width=2.0)

    # do the drawing, then flip
    for obj in [img, line, rect, diamond, circle]:
        obj.draw()

    screenshot = ec.screenshot()  # must be called *before* the flip
    ec.flip()
    ec.wait_for_presses(0.5)

ea.plot_screen(screenshot)