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# -*- coding: utf-8 -*-
import numpy as np
from vispy.scene.visuals import Markers
from vispy.testing import (requires_application, TestingCanvas,
run_tests_if_main)
from vispy.testing.image_tester import assert_image_approved
@requires_application()
def test_markers():
"""Test basic marker / point-sprite support"""
# this is probably too basic, but it at least ensures that point sprites
# work for people
np.random.seed(57983)
data = np.random.normal(size=(30, 2), loc=50, scale=10)
with TestingCanvas() as c:
marker = Markers(parent=c.scene)
marker.set_data(data)
assert_image_approved(c.render(), "visuals/markers.png")
# Test good correlation at high-dpi
with TestingCanvas(px_scale=2) as c:
marker = Markers(parent=c.scene)
marker.set_data(data)
assert_image_approved(c.render(), "visuals/markers.png")
run_tests_if_main()
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