1 /****************************************************************************
2 **
3 ** Copyright (C) 2015 The Qt Company Ltd.
4 ** Contact: http://www.qt.io/licensing/
5 **
6 ** This file is part of the test suite of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see http://www.qt.io/terms-conditions. For further
15 ** information use the contact form at http://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 or version 3 as published by the Free
20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
22 ** following information to ensure the GNU Lesser General Public License
23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
25 **
26 ** As a special exception, The Qt Company gives you certain additional
27 ** rights. These rights are described in The Qt Company LGPL Exception
28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
29 **
30 ** GNU General Public License Usage
31 ** Alternatively, this file may be used under the terms of the GNU
32 ** General Public License version 3.0 as published by the Free Software
33 ** Foundation and appearing in the file LICENSE.GPL included in the
34 ** packaging of this file. Please review the following information to
35 ** ensure the GNU General Public License version 3.0 requirements will be
36 ** met: http://www.gnu.org/copyleft/gpl.html.
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 #include "testtessellator.h"
42 #include <private/qtessellator_p.h>
43
44 #include "math.h"
45 #include <QtCore/QDebug>
46
47 class TestTessellator : public QTessellator
48 {
49 public:
50 QVector<XTrapezoid> *traps;
51 void addTrap(const Trapezoid &trap);
52 };
53
addTrap(const Trapezoid & trap)54 void TestTessellator::addTrap(const Trapezoid &trap)
55 {
56 XTrapezoid xtrap;
57 xtrap.top = Q27Dot5ToXFixed(trap.top);
58 xtrap.bottom = Q27Dot5ToXFixed(trap.bottom);
59 xtrap.left.p1.x = Q27Dot5ToXFixed(trap.topLeft->x);
60 xtrap.left.p1.y = Q27Dot5ToXFixed(trap.topLeft->y);
61 xtrap.left.p2.x = Q27Dot5ToXFixed(trap.bottomLeft->x);
62 xtrap.left.p2.y = Q27Dot5ToXFixed(trap.bottomLeft->y);
63 xtrap.right.p1.x = Q27Dot5ToXFixed(trap.topRight->x);
64 xtrap.right.p1.y = Q27Dot5ToXFixed(trap.topRight->y);
65 xtrap.right.p2.x = Q27Dot5ToXFixed(trap.bottomRight->x);
66 xtrap.right.p2.y = Q27Dot5ToXFixed(trap.bottomRight->y);
67 traps->append(xtrap);
68 }
69
70
test_tesselate_polygon(QVector<XTrapezoid> * traps,const QPointF * points,int nPoints,bool winding)71 void test_tesselate_polygon(QVector<XTrapezoid> *traps, const QPointF *points, int nPoints,
72 bool winding)
73 {
74 TestTessellator t;
75 t.traps = traps;
76 t.setWinding(winding);
77 t.tessellate(points, nPoints);
78 }
79
80
test_tessellate_polygon_convex(QVector<XTrapezoid> * traps,const QPointF * points,int nPoints,bool winding)81 void test_tessellate_polygon_convex(QVector<XTrapezoid> *traps, const QPointF *points, int nPoints,
82 bool winding)
83 {
84 TestTessellator t;
85 t.traps = traps;
86 t.setWinding(winding);
87 t.tessellateConvex(points, nPoints);
88 }
89
90
test_tessellate_polygon_rect(QVector<XTrapezoid> * traps,const QPointF * points,int nPoints,bool winding)91 void test_tessellate_polygon_rect(QVector<XTrapezoid> *traps, const QPointF *points, int nPoints,
92 bool winding)
93 {
94 // 5 points per rect
95 if (nPoints % 5 != 0)
96 qWarning() << Q_FUNC_INFO << "multiples of 5 points expected";
97
98 TestTessellator t;
99 t.traps = traps;
100 t.setWinding(winding);
101 for (int i = 0; i < nPoints / 5; ++i) {
102 QPointF rectA = points[5*i];
103 QPointF rectB = points[5*i+1];
104 QPointF rectC = points[5*i+2];
105 QPointF rectD = points[5*i+3];
106
107 QPointF a = (rectA + rectD) * 0.5;
108 QPointF b = (rectB + rectC) * 0.5;
109
110 QPointF delta = rectA - rectD;
111
112 qreal width = sqrt(delta.x() * delta.x() + delta.y() * delta.y());
113
114 t.tessellateRect(a, b, width);
115 }
116 }
117