1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
# -*- coding: utf-8 -*-
# Copyright (c) Vispy Development Team. All Rights Reserved.
# Distributed under the (new) BSD License. See LICENSE.txt for more info.
import numpy as np
from vispy.visuals.line.arrow import ARROW_TYPES
from vispy.scene import visuals, transforms
from vispy.testing import (requires_application, TestingCanvas,
run_tests_if_main, assert_raises, SkipTest, IS_TRAVIS_CI)
from vispy.testing.image_tester import assert_image_approved
vertices = np.array([
[25, 25],
[25, 75],
[50, 25],
[50, 75],
[75, 25],
[75, 75]
]).astype(np.float32)
vertices += 0.33
arrows = np.array([
vertices[:2],
vertices[3:1:-1],
vertices[4:],
vertices[-1:-3:-1]
]).reshape((4, 4))
@requires_application()
def test_arrow_draw():
"""Test drawing arrows without transforms"""
with TestingCanvas() as c:
if IS_TRAVIS_CI and c.app.backend_name.lower() == 'pyqt4':
# TODO: Fix this (issue #1042
raise SkipTest('Travis fails due to FB stack problem')
for arrow_type in ARROW_TYPES:
arrow = visuals.Arrow(pos=vertices, arrow_type=arrow_type,
arrows=arrows, arrow_size=10, color='red',
connect="segments", parent=c.scene)
assert_image_approved(c.render(), 'visuals/arrow_type_%s.png' %
arrow_type)
arrow.parent = None
@requires_application()
def test_arrow_transform_draw():
"""Tests the ArrowVisual when a transform is applied"""
with TestingCanvas() as c:
if IS_TRAVIS_CI and c.app.backend_name.lower() == 'pyqt4':
# TODO: Fix this (issue #1042
raise SkipTest('Travis fails due to FB stack problem')
for arrow_type in ARROW_TYPES:
arrow = visuals.Arrow(pos=vertices, arrow_type=arrow_type,
arrows=arrows, arrow_size=10, color='red',
connect="segments", parent=c.scene)
arrow.transform = transforms.STTransform(scale=(0.5, 0.75),
translate=(-20, -20))
assert_image_approved(c.render(),
'visuals/arrow_transform_type_%s.png' %
arrow_type)
arrow.parent = None
@requires_application()
def test_arrow_reactive():
"""Tests the reactive behaviour of the ArrowVisual properties."""
with TestingCanvas() as c:
arrow = visuals.Arrow(pos=vertices, arrows=arrows,
connect="segments", parent=c.scene)
arrow.arrow_type = "stealth"
assert_image_approved(c.render(), 'visuals/arrow_reactive1.png')
arrow.arrow_size = 20
assert_image_approved(c.render(), 'visuals/arrow_reactive2.png')
@requires_application()
def test_arrow_attributes():
"""Tests if the ArrowVisual performs the required checks for attributes."""
with TestingCanvas() as c:
arrow = visuals.Arrow(pos=vertices, arrow_type="stealth",
arrows=arrows, arrow_size=10, color='red',
connect="segments", parent=c.scene)
def size_test():
arrow.arrow_size = 0.0
def type_test():
arrow.arrow_type = "random_non_existent"
assert_raises(
ValueError, size_test
)
assert_raises(
ValueError, type_test
)
run_tests_if_main()
|
