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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Values and Units Test: calc() function with angle values</title>
<!--
Original test is:
https://chromium.googlesource.com/chromium/src/+/c825d655f6aaf73484f9d56e9012793f5b9668cc/third_party/WebKit/LayoutTests/css3/calc/calc-with-time-angle-and-frequency-values.html
Issue 917718: [css-values] calc-with-time-angle-and-frequency-values
test is highly unreliable, transition-delay testing causes side effects
https://bugs.chromium.org/p/chromium/issues/detail?id=917718
-->
<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="help" href="https://www.w3.org/TR/css-values-3/#calc-computed-value">
<link rel="help" href="https://www.w3.org/TR/css-values-3/#angles">
<meta content="This test checks that additions, subtractions, multiplications and divisions in calc() function when applied to angle units." name="assert">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
<div id="log"></div>
<div id="target"></div>
<script>
function startTesting()
{
/*
In this mega-test of 27 sub-tests, we intentionally
set the tolerance precision (epsilon) to a rather big
value (0.0001 === 100 millionths). The reason for this
is we want to verify if browsers and CSS-capable
applications do the right calculations. We do not want
to penalize browsers and CSS-capable applications that
have modest precision (not capable of a 1 millionth
level precision).
*/
// testTransformValuesCloseTo(property_name, calcValue, epsilon, expectedValue, description)
testTransformValuesCloseTo("rotate(calc(45deg + 45deg))", 0.0001, "rotate(90deg)", "addition of 2 angle units: deg plus deg");
testTransformValuesCloseTo("rotate(calc(45deg + 1rad))", 0.0001, "rotate(102.29578deg)", "addition of 2 angle units: deg plus rad");
/*
1 radian == 57.295779513 degrees
The original test was using the slightly imprecise rotate(102.3deg)
*/
testTransformValuesCloseTo("rotate(calc(20deg + 200grad))", 0.0001, "rotate(200deg)", "addition of 2 angle units: deg plus grad");
testTransformValuesCloseTo("rotate(calc(200deg + 0.5turn))", 0.0001, "rotate(380deg)", "addition of 2 angle units: deg plus turn");
testTransformValuesCloseTo("rotate(calc(45rad + 45rad))", 0.0001, "rotate(90rad)", "addition of 2 angle units: rad plus rad");
testTransformValuesCloseTo("rotate(calc(1rad + 40grad))", 0.0001, "rotate(93.29578deg)", "addition of 2 angle units: rad plus grad");
// 1 radian == 57.295779513 degrees; 40 gradians is 36 degrees.
testTransformValuesCloseTo("rotate(calc(1rad + 0.5turn))", 0.0001, "rotate(237.29578deg)", "addition of 2 angle units: rad plus turn");
testTransformValuesCloseTo("rotate(calc(45grad + 45grad))", 0.0001, "rotate(90grad)", "addition of 2 angle units: grad plus grad");
testTransformValuesCloseTo("rotate(calc(10grad + 0.5turn))", 0.0001, "rotate(189deg)", "addition of 2 angle units: grad plus turn");
// 10 gradians is 9 degrees.
// subtraction of angle unit
testTransformValuesCloseTo("rotate(calc(45deg - 15deg))", 0.0001, "rotate(30deg)", "subtraction of angle unit: deg minus deg");
testTransformValuesCloseTo("rotate(calc(90deg - 1rad))", 0.0001, "rotate(32.70422deg)", "subtraction of angle unit: deg minus rad");
// 1 radian == 57.295779513 degrees
testTransformValuesCloseTo("rotate(calc(38deg - 20grad))", 0.0001, "rotate(20deg)", "subtraction of angle unit: deg minus grad");
testTransformValuesCloseTo("rotate(calc(360deg - 0.5turn))", 0.0001, "rotate(180deg)", "subtraction of angle unit: deg minus turn");
testTransformValuesCloseTo("rotate(calc(45rad - 15rad))", 0.0001, "rotate(30rad)", "subtraction of angle unit: rad minus rad");
testTransformValuesCloseTo("rotate(calc(30rad - 10grad))", 0.0001, "rotate(1709.87339deg)", "subtraction of angle unit: rad minus grad");
// 30 radians is 1718.8733854 degrees ; 10 gradians is 9 degrees.
testTransformValuesCloseTo("rotate(calc(4rad - 0.1turn))", 0.0001, "rotate(193.18312deg)", "subtraction of angle unit: rad minus turn");
// 4 radians is 229.183118052 degrees ; 0.1 turn is 36 degrees.
testTransformValuesCloseTo("rotate(calc(45grad - 15grad))", 0.0001, "rotate(30grad)", "subtraction of angle unit: grad minus grad");
testTransformValuesCloseTo("rotate(calc(100grad - 0.25turn))", 0.0001, "rotate(0deg)", "subtraction of angle unit: grad minus turn");
// Multiplication of angle unit
testTransformValuesCloseTo("rotate(calc(45deg * 2))", 0.0001, "rotate(90deg)", "multiplication of angle unit: deg multiplied by int");
testTransformValuesCloseTo("rotate(calc(2 * 45rad))", 0.0001, "rotate(90rad)", "multiplication of angle unit: int multiplied by rad");
testTransformValuesCloseTo("rotate(calc(45grad * 2))", 0.0001, "rotate(90grad)", "multiplication of angle unit: grad multiplied by int");
testTransformValuesCloseTo("rotate(calc(2 * 45turn))", 0.0001, "rotate(90turn)", "multiplication of angle unit: int multiplied by turn");
// Division of angle unit
testTransformValuesCloseTo( "rotate(calc(90deg / 2))", 0.0001, "rotate(45deg)", "division of angle unit: deg divided by int");
testTransformValuesCloseTo("rotate(calc(90rad / 2))", 0.0001, "rotate(45rad)", "division of angle unit: rad divided by int");
testTransformValuesCloseTo("rotate(calc(90grad / 2))", 0.0001, "rotate(45grad)", "division of angle unit: grad divided by int");
testTransformValuesCloseTo("rotate(calc(90turn / 2))", 0.0001, "rotate(45turn)", "division of angle unit: turn divided by int");
/*
deg
Degrees. There are 360 degrees in a full circle.
grad
Gradians, also known as "gons" or "grades". There are 400 gradians in a full circle.
rad
Radians. There are 2π radians in a full circle.
1rad == 57.295779513°
https://www.rapidtables.com/convert/number/radians-to-degrees.html
π == Math.PI == 3.141592653589793
turn
Turns. There is 1 turn in a full circle.
*/
// Testing conversion of angle unit
testTransformValuesCloseTo("rotate(calc(50grad)", 0.0001, "rotate(45deg)", "conversion of angle unit: grad into deg");
}
startTesting();
</script>
|
