svgtopt/gfx2d/inc/GfxEllipseIteratorP.h
author Pat Downey <patd@symbian.org>
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/*
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* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Graphics Extension Library header file
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*
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*/
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#ifndef GFXELLIPSEITERATORP_H
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#define GFXELLIPSEITERATORP_H
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#include <e32std.h>
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#include "GfxFloatFixPt.h"
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#include "GfxPathIterator.h"
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class TGfxEllipse2D;
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class TGfxAffineTransform;
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/**
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 * Implementation of an ellipse iterator.
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 *
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 *  @lib Gfx2D.lib
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 *  @since 1.0
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 */
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class CGfxEllipseIteratorP : public CGfxPathIterator
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    {
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    public:
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        /**
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         * Construct an ellipse iterator.
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         *
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         * @since 1.0
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         * @param aEllipse : ellipse to create iterator for.
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         * @param aTransform : transform to apply to defining points.
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         * @return
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         */
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                        CGfxEllipseIteratorP( TGfxEllipse2D* aEllipse,
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                                              TGfxAffineTransform* aTransform );
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        /**
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         * Get the points defining the ellipse and the segment type.
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         *
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         * @since 1.0
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         * @param aCoords : point storage
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         * @return segment type
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         */
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        TGfxSegType     CurrentSegment( TFloatFixPt * aCoords );
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        /**
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         * Determine wether end of iterator has been reached.
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         *
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         * @since 1.0
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         * @return true if end of iterator
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         */
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        TBool           IsDone();
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        /**
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         * Cycle to the next point of this iterator.
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         *
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         * @since 1.0
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         * @return
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         */
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        void            NextL();
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        /**
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         * Write points of the ellipse to be a polygon.
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         *
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         * @since 1.0
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         * @param aRenderer : point storage
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         * @param aFlatness : number of points to generate.
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         * @return
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         */
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    private:
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        TGfxEllipse2D*  iEllipse;
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        TInt32          iIdx;
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    };
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#endif      // GFXELLIPSEITERATORP_H