--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ganeswidgets/inc/hgtransformedquad.h	Fri May 14 16:57:01 2010 +0300
@@ -0,0 +1,72 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    
+*
+*/
+
+#ifndef HGTRANSFORMEDQUAD_H
+#define HGTRANSFORMEDQUAD_H
+
+#include <qvector2d>
+
+class HgQuad;
+class QMatrix4x4;
+class QPointF;
+class QSizeF;
+class QPolygonF;
+class QPainter;
+
+/**
+ * Base class for transformed quads, to be used by renderers.
+ */
+class HgTransformedQuad
+{
+public:
+    HgTransformedQuad(qreal yDir=1);
+    virtual ~HgTransformedQuad();
+
+    int index() const;
+    
+    bool isPointInside(const QPointF& point) const;
+
+    void transformQuad(int index, const QMatrix4x4& projView, HgQuad* quad, 
+        qreal mirroringPlaneY, const QVector2D& translate, const QPointF& center, 
+        const QSizeF& windowSize);
+    
+    void getTransformedPoints(QPolygonF& poly) const;
+    
+    HgQuad* quad() const;
+
+    virtual void draw(QPainter* painter, const QRectF& rect)=0;
+
+    static bool quadSorter(HgTransformedQuad* a, HgTransformedQuad* b);
+    
+protected:
+    
+    void computeMirroredPoints(const QMatrix4x4& trans, const QMatrix4x4& projView, 
+        qreal mirroringPlaneY, const QVector2D& translate, const QPointF& center, 
+        const QSizeF& windowSize);
+
+    void perspectiveTransformPoints(QVector2D* outPoints, const QMatrix4x4& matrix, 
+        const QPointF& center, const QSizeF& windowSize);
+    
+protected:
+    int mIndex;
+    HgQuad* mQuad;
+    QVector2D mTransformedPoints[4];
+    QVector2D mMirroredPoints[4];
+    qreal mYDir;
+};
+
+#endif