1 /*

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

    15 *

    16 */

    17 

    18 

    19 #ifndef GFXCURVEFLATTENERP_H

    20 #define GFXCURVEFLATTENERP_H

    21 

    22 #include <e32base.h>

    23 #include <e32std.h>

    24 

    25 #include "GfxFloatFixPt.h"

    26 

    27 class TGfxAffineTransform;

    28 

    29 

    30 /**

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

    32  *

    33  *  @lib Gfx2D.lib

    34  *  @since 1.0

    35  */

    36 class TGfxCurveFlattener

    37     {

    38     public:

    39 

    40         /**

    41          * Construct a TGfxCurveFlattener with a transform matrix.

    42          *

    43          * @since 1.0

    44          * @param aTransform : Transformation matrix.

    45          * @return

    46          */

    47                                 TGfxCurveFlattener( TGfxAffineTransform* aTransform );

    48 

    49         /**

    50          * Add a quadratic curve to this object.

    51          *

    52          * @since 1.0

    53          * @param aRenderer : edge point list

    54          * @param aCtrlPoints : control points.

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

    56          * @return

    57          */

    58         void                    AddSubCurveQuadL( CGfxEdgeListP* aRenderer,

    59                                                   TFloatFixPt * aCtrlPoints,

    60                                                   TInt32 aLimit );

    61 

    62         /**

    63          * Add a cubic curve to this object.

    64          *

    65          * @since 1.0

    66          * @param aRenderer : edge point list

    67          * @param aCtrlPoints : control points.

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

    69          * @return

    70          */

    71         void                    AddSubCurveCubicL( CGfxEdgeListP* aRenderer,

    72                                                    TFloatFixPt * aCtrlPoints,

    73                                                    TInt32 aLimit );

    74     private:

    75 

    76         TGfxAffineTransform*    iTransform;

    77     };

    78 

    79 #endif      // GFXCURVEFLATTENERP_H