/*

* Copyright (c) 2002 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:  Graphics Extension Library header file

*

*/

#ifndef GFXCURVEFLATTENERP_H

#define GFXCURVEFLATTENERP_H

#include <e32base.h>

#include <e32std.h>

#include "GfxFloatFixPt.h"

class TGfxAffineTransform;

/**

 * This class provides the methods to smooth a curve defined by control points.

 *

 *  @lib Gfx2D.lib

 *  @since 1.0

 */

class TGfxCurveFlattener

    {

    public:

        /**

         * Construct a TGfxCurveFlattener with a transform matrix.

         *

         * @since 1.0

         * @param aTransform : Transformation matrix.

         * @return

         */

                                TGfxCurveFlattener( TGfxAffineTransform* aTransform );

        /**

         * Add a quadratic curve to this object.

         *

         * @since 1.0

         * @param aRenderer : edge point list

         * @param aCtrlPoints : control points.

         * @param aLimit : number of points to flatten curve with.

         * @return

         */

        void                    AddSubCurveQuadL( CGfxEdgeListP* aRenderer,

                                                  TFloatFixPt * aCtrlPoints,

                                                  TInt32 aLimit );

        /**

         * Add a cubic curve to this object.

         *

         * @since 1.0

         * @param aRenderer : edge point list

         * @param aCtrlPoints : control points.

         * @param aLimit : number of points to flatten curve with.

         * @return

         */

        void                    AddSubCurveCubicL( CGfxEdgeListP* aRenderer,

                                                   TFloatFixPt * aCtrlPoints,

                                                   TInt32 aLimit );

    private:

        TGfxAffineTransform*    iTransform;

    };

#endif      // GFXCURVEFLATTENERP_H