1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:    

    15 *

    16 */

    17 

    18 #ifndef HGTRANSFORMEDQUAD_H

    19 #define HGTRANSFORMEDQUAD_H

    20 

    21 #include <qvector2d>

    22 

    23 class HgQuad;

    24 class QMatrix4x4;

    25 class QPointF;

    26 class QSizeF;

    27 class QPolygonF;

    28 class QPainter;

    29 

    30 /**

    31  * Base class for transformed quads, to be used by renderers.

    32  */

    33 class HgTransformedQuad

    34 {

    35 public:

    36     HgTransformedQuad(qreal yDir=1);

    37     virtual ~HgTransformedQuad();

    38 

    39     int index() const;

    40     

    41     bool isPointInside(const QPointF& point) const;

    42 

    43     void transformQuad(int index, const QMatrix4x4& projView, HgQuad* quad, 

    44         qreal mirroringPlaneY, const QVector2D& translate, const QPointF& center, 

    45         const QSizeF& windowSize);

    46     

    47     void getTransformedPoints(QPolygonF& poly) const;

    48     

    49     HgQuad* quad() const;

    50 

    51     virtual void draw(QPainter* painter, const QRectF& rect)=0;

    52 

    53     static bool quadSorter(HgTransformedQuad* a, HgTransformedQuad* b);

    54     

    55 protected:

    56     

    57     void computeMirroredPoints(const QMatrix4x4& trans, const QMatrix4x4& projView, 

    58         qreal mirroringPlaneY, const QVector2D& translate, const QPointF& center, 

    59         const QSizeF& windowSize);

    60 

    61     void perspectiveTransformPoints(QVector2D* outPoints, const QMatrix4x4& matrix, 

    62         const QPointF& center, const QSizeF& windowSize);

    63     

    64 protected:

    65     int mIndex;

    66     HgQuad* mQuad;

    67     QVector2D mTransformedPoints[4];

    68     QVector2D mMirroredPoints[4];

    69     qreal mYDir;

    70 };

    71 

    72 #endif