1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the test suite of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 #include "testtessellator.h"

    42 #include <private/qtessellator_p.h>

    43 

    44 #include "math.h"

    45 

    46 class TestTessellator : public QTessellator

    47 {

    48 public:

    49     QVector<XTrapezoid> *traps;

    50     void addTrap(const Trapezoid &trap);

    51 };

    52 

    53 void TestTessellator::addTrap(const Trapezoid &trap)

    54 {

    55     XTrapezoid xtrap;

    56     xtrap.top = Q27Dot5ToXFixed(trap.top);

    57     xtrap.bottom = Q27Dot5ToXFixed(trap.bottom);

    58     xtrap.left.p1.x = Q27Dot5ToXFixed(trap.topLeft->x);

    59     xtrap.left.p1.y = Q27Dot5ToXFixed(trap.topLeft->y);

    60     xtrap.left.p2.x = Q27Dot5ToXFixed(trap.bottomLeft->x);

    61     xtrap.left.p2.y = Q27Dot5ToXFixed(trap.bottomLeft->y);

    62     xtrap.right.p1.x = Q27Dot5ToXFixed(trap.topRight->x);

    63     xtrap.right.p1.y = Q27Dot5ToXFixed(trap.topRight->y);

    64     xtrap.right.p2.x = Q27Dot5ToXFixed(trap.bottomRight->x);

    65     xtrap.right.p2.y = Q27Dot5ToXFixed(trap.bottomRight->y);

    66     traps->append(xtrap);

    67 }

    68 

    69 

    70 void test_tesselate_polygon(QVector<XTrapezoid> *traps, const QPointF *points, int nPoints,

    71                          bool winding)

    72 {

    73     TestTessellator t;

    74     t.traps = traps;

    75     t.setWinding(winding);

    76     t.tessellate(points, nPoints);

    77 }

    78 

    79 

    80 void test_tessellate_polygon_convex(QVector<XTrapezoid> *traps, const QPointF *points, int nPoints,

    81                                    bool winding)

    82 {

    83     TestTessellator t;

    84     t.traps = traps;

    85     t.setWinding(winding);

    86     t.tessellateConvex(points, nPoints);

    87 }

    88 

    89 

    90 void test_tessellate_polygon_rect(QVector<XTrapezoid> *traps, const QPointF *points, int nPoints,

    91                                   bool winding)

    92 {

    93     // 5 points per rect

    94     Q_ASSERT(nPoints % 5 == 0);

    95 

    96     TestTessellator t;

    97     t.traps = traps;

    98     t.setWinding(winding);

    99     for (int i = 0; i < nPoints / 5; ++i) {

   100         QPointF rectA = points[5*i];

   101         QPointF rectB = points[5*i+1];

   102         QPointF rectC = points[5*i+2];

   103         QPointF rectD = points[5*i+3];

   104 

   105         QPointF a = (rectA + rectD) * 0.5;

   106         QPointF b = (rectB + rectC) * 0.5;

   107 

   108         QPointF delta = rectA - rectD;

   109 

   110         qreal width = sqrt(delta.x() * delta.x() + delta.y() * delta.y());

   111 

   112         t.tessellateRect(a, b, width);

   113     }

   114 }