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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QTest>
#include <qpolygon.h>
#include <qpainterpath.h>
#include <math.h>
#include <qpainter.h>
class tst_QPolygon : public QObject
{
Q_OBJECT
private slots:
void constructors();
void toPolygonF();
void boundingRect_data();
void boundingRect();
void boundingRectF_data();
void boundingRectF();
void makeEllipse();
void swap();
void intersections_data();
void intersections();
};
void constructors_helper(QPolygon) {}
void constructors_helperF(QPolygonF) {}
void tst_QPolygon::constructors()
{
constructors_helper(QPolygon());
constructors_helper({});
constructors_helper({ QPoint(1, 2), QPoint(3, 4)});
constructors_helper({ {1, 2}, {3, 4} });
constructors_helper(QPolygon(12));
QList<QPoint> pointList;
constructors_helper(pointList);
constructors_helper(std::move(pointList));
constructors_helper(QRect(1, 2, 3, 4));
const int points[2] = { 10, 20 };
constructors_helper(QPolygon(1, points));
constructors_helperF(QPolygonF());
constructors_helperF({});
constructors_helperF({ QPointF(1, 2), QPointF(3, 4)});
constructors_helperF({ {1, 2}, {3, 4} });
constructors_helperF(QPolygonF(12));
constructors_helperF(QPolygon());
QList<QPointF> pointFList;
constructors_helperF(pointFList);
constructors_helperF(std::move(pointFList));
constructors_helperF(QRectF(1, 2, 3, 4));
}
void tst_QPolygon::toPolygonF()
{
const QPolygon p = {{1, 1}, {-1, 1}, {-1, -1}, {1, -1}};
auto pf = p.toPolygonF();
static_assert(std::is_same_v<decltype(pf), QPolygonF>);
QCOMPARE(pf.size(), p.size());
auto p2 = pf.toPolygon();
static_assert(std::is_same_v<decltype(p2), QPolygon>);
QCOMPARE(p, p2);
}
void tst_QPolygon::boundingRect_data()
{
QTest::addColumn<QPolygon>("poly");
QTest::addColumn<QRect>("brect");
#define ROW(args, rect) \
do { \
QPolygon poly; \
poly.setPoints args; \
QTest::newRow(#args) << poly << QRect rect; \
} while (0)
QTest::newRow("empty") << QPolygon() << QRect(0, 0, 0, 0);
ROW((1, 0,1), ( 0, 1, 1, 1));
ROW((2, 0,1, 1,0), ( 0, 0, 2, 2));
ROW((3, -1,1, -1,-1, 1,0), (-1,-1, 3, 3));
#undef ROW
}
void tst_QPolygon::boundingRect()
{
QFETCH(QPolygon, poly);
QFETCH(QRect, brect);
QCOMPARE(poly.boundingRect(), brect);
}
namespace {
struct MyPolygonF : QPolygonF
{
// QPolygonF doesn't have setPoints...
void setPoints(int nPoints, int firstx, int firsty, ...) {
va_list ap;
reserve(nPoints);
*this << QPointF(firstx, firsty);
va_start(ap, firsty);
while (--nPoints) {
const int x = va_arg(ap, int);
const int y = va_arg(ap, int);
*this << QPointF(x, y);
}
va_end(ap);
}
};
}
void tst_QPolygon::boundingRectF_data()
{
QTest::addColumn<QPolygonF>("poly");
QTest::addColumn<QRectF>("brect");
#define ROW(args, rect) \
do { \
MyPolygonF poly; \
poly.setPoints args; \
QTest::newRow(#args) << QPolygonF(poly) << QRectF rect; \
} while (0)
QTest::newRow("empty") << QPolygonF() << QRectF(0, 0, 0, 0);
ROW((1, 0,1), ( 0, 1, 0, 0));
ROW((2, 0,1, 1,0), ( 0, 0, 1, 1));
ROW((3, -1,1, -1,-1, 1,0), (-1,-1, 2, 2));
#undef ROW
}
void tst_QPolygon::boundingRectF()
{
QFETCH(QPolygonF, poly);
QFETCH(QRectF, brect);
QCOMPARE(poly.boundingRect(), brect);
}
void tst_QPolygon::makeEllipse()
{
// create an ellipse with R1 = R2 = R, i.e. a circle
QPolygon pa;
const int R = 50; // radius
QPainterPath path;
path.addEllipse(0, 0, 2*R, 2*R);
pa = path.toSubpathPolygons().at(0).toPolygon();
int i;
// make sure that all points are R+-1 away from the center
bool err = false;
for (i = 1; i < pa.size(); i++) {
QPoint p = pa.at(i);
double r = sqrt(pow(double(p.x() - R), 2.0) + pow(double(p.y() - R), 2.0));
// ### too strict ? at least from visual inspection it looks
// quite odd around the main axes. 2.0 passes easily.
err |= (qAbs(r - double(R)) > 2.0);
}
QVERIFY( !err );
}
void tst_QPolygon::swap()
{
QPolygon p1(QList<QPoint>() << QPoint(0, 0) << QPoint(10, 10) << QPoint(-10, 10));
QPolygon p2(QList<QPoint>() << QPoint(0, 0) << QPoint(0, 10) << QPoint(10, 10)
<< QPoint(10, 0));
p1.swap(p2);
QCOMPARE(p1.count(),4);
QCOMPARE(p2.count(),3);
}
void tst_QPolygon::intersections_data()
{
QTest::addColumn<QPolygon>("poly1");
QTest::addColumn<QPolygon>("poly2");
QTest::addColumn<bool>("result");
QTest::newRow("empty intersects nothing")
<< QPolygon()
<< QPolygon(QList<QPoint>() << QPoint(0, 0) << QPoint(10, 10) << QPoint(-10, 10))
<< false;
QTest::newRow("identical triangles")
<< QPolygon(QList<QPoint>() << QPoint(0, 0) << QPoint(10, 10) << QPoint(-10, 10))
<< QPolygon(QList<QPoint>() << QPoint(0, 0) << QPoint(10, 10) << QPoint(-10, 10))
<< true;
QTest::newRow("not intersecting")
<< QPolygon(QList<QPoint>() << QPoint(0, 0) << QPoint(10, 10) << QPoint(-10, 10))
<< QPolygon(QList<QPoint>() << QPoint(0, 20) << QPoint(10, 12) << QPoint(-10, 12))
<< false;
QTest::newRow("clean intersection of squares")
<< QPolygon(QList<QPoint>()
<< QPoint(0, 0) << QPoint(0, 10) << QPoint(10, 10) << QPoint(10, 0))
<< QPolygon(QList<QPoint>()
<< QPoint(5, 5) << QPoint(5, 15) << QPoint(15, 15) << QPoint(15, 5))
<< true;
QTest::newRow("clean contains of squares")
<< QPolygon(QList<QPoint>()
<< QPoint(0, 0) << QPoint(0, 10) << QPoint(10, 10) << QPoint(10, 0))
<< QPolygon(QList<QPoint>()
<< QPoint(5, 5) << QPoint(5, 8) << QPoint(8, 8) << QPoint(8, 5))
<< true;
}
void tst_QPolygon::intersections()
{
QFETCH(QPolygon, poly1);
QFETCH(QPolygon, poly2);
QFETCH(bool, result);
QCOMPARE(poly2.intersects(poly1), poly1.intersects(poly2));
QCOMPARE(poly2.intersected(poly1).isEmpty(), poly1.intersected(poly2).isEmpty());
QCOMPARE(!poly1.intersected(poly2).isEmpty(), poly1.intersects(poly2));
QCOMPARE(poly1.intersects(poly2), result);
}
QTEST_APPLESS_MAIN(tst_QPolygon)
#include "tst_qpolygon.moc"
|
