cxftrans.cpp

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// $Id: cxftrans.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

This file is part of Xara LX.

Xara LX is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as published
by the Free Software Foundation.

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Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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-----------------

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=================================XARAHEADEREND============================
 */
/********************************************************************************************

>   cxftrans.cpp

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Purpose:    Code for importing and exporting transformation attributes to and
            from the new native file format.

********************************************************************************************/

#include "camtypes.h"
/*
//#include "matrix.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxftags.h"
//#include "cxfdefs.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "cxfrec.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "camfiltr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxftrans.h"
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::Write(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - Filter to save the record to
                pMatrix - Matrix to save
    Returns:    BOOL indicating success or not.
    Purpose:    Writes a transformation attribute to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::Write(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    // check the arguments
    ERROR2IF(pFilter == NULL, FALSE, "NULL filter pointer passed as argument.");
    ERROR2IF(pMatrix == NULL, FALSE, "NULL matrix pointer passed as argument.");
    
    BOOL Result;

    // !!ACH!!
    // here we just switch on the transform type of the matrix, and assume it gets set
    // properly by whoever created it. What we ought to do is decompose the matrix and
    // decide whcih of the many transform attribute records we ought to output.
    // This works for the moment, but needs changing.
    
    switch (pMatrix->Type)
    {
        case TRANS_IDENTITY     :   Result = WriteIdentity(pFilter, pMatrix);
                                    break;
        case TRANS_TRANSLATION  :   Result = WriteTranslation(pFilter, pMatrix);
                                    break;
        case TRANS_ROTATION     :   Result = WriteRotation(pFilter, pMatrix);
                                    break;
        case TRANS_SCALE        :   Result = WriteScale(pFilter, pMatrix);
                                    break;
        case TRANS_SHEAR        :   Result = WriteShearX(pFilter, pMatrix);
                                    break;
        case TRANS_COMPLEX      :   Result = WriteGeneral(pFilter, pMatrix);
                                    break;
        default                 :   Result = WriteGeneral(pFilter, pMatrix);
                                    break;
    }

    return Result;
}
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::WriteIdentity(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - filter to use
                pMatrix - matrix to save
    Returns:    Bool indicating success
    Purpose:    Writes an identity transform attribute record to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::WriteIdentity(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    BOOL ok;

    CXaraFileRecord Rec(TAG_TRANSFORM_IDENTITY, TAG_TRANSFORM_IDENTITY_SIZE);

    ok = Rec.Init();
    
    if (ok) ok = pFilter->Write(&Rec);
    
    return ok;
}
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::WriteTranslation(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - filter to use
                pMatrix - matrix to save
    Returns:    boolean value indicating success
    Purpose:    Writes a translation transform attribute to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::WriteTranslation(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    BOOL ok;
    INT32 XTrans, YTrans;

    CXaraFileRecord Rec(TAG_TRANSFORM_TRANSLATION, TAG_TRANSFORM_TRANSLATION_SIZE);

    ok = Rec.Init();

    pMatrix->GetTranslation(XTrans, YTrans);

    if (ok) ok = Rec.Write(XTrans);
    if (ok) ok = Rec.Write(YTrans);
    if (ok) ok = pFilter->Write(&Rec);

    return ok;
}
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::WriteRotation(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - filter to use
                pMatrix - matrix to save
    Returns:    boolean value indicating success
    Purpose:    Writes a rotation transform attribute to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::WriteRotation(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    BOOL ok;

    ANGLE Rotation;

    CXaraFileRecord Rec(TAG_TRANSFORM_ROTATION, TAG_TRANSFORM_ROTATION_SIZE);

    ok = Rec.Init();

    if (ok) ok = pMatrix->Decompose(NULL, NULL, &Rotation, NULL, NULL);
    if (ok) ok = Rec.Write( (FLOAT) Rotation.MakeDouble() );
    if (ok) ok = pFilter->Write(&Rec);

    return ok;
}
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::WriteScale(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - filter to use
                pMatrix - matrix to save
    Returns:    boolean value indicating success
    Purpose:    Writes a scaling transform attribute to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::WriteScale(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    BOOL ok;

    FIXED16 Scale;

    CXaraFileRecord Rec(TAG_TRANSFORM_SCALE, TAG_TRANSFORM_SCALE_SIZE);

    ok = Rec.Init();

    if (ok) ok = pMatrix->Decompose(&Scale, NULL, NULL, NULL, NULL);
    if (ok) ok = Rec.Write( (FLOAT) Scale.MakeDouble() );
    if (ok) ok = pFilter->Write(&Rec);

    return ok;
}
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::WriteShearX(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - filter to use
                pMatrix - matrix to save
    Returns:    boolean indicating success
    Purpose:    Writes a shear parallel to the X axis to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::WriteShearX(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    BOOL ok;
    
    ANGLE Shear;

    CXaraFileRecord Rec(TAG_TRANSFORM_SHEAR_X, TAG_TRANSFORM_SHEAR_X_SIZE);

    ok = Rec.Init();

    if (ok) ok = pMatrix->Decompose(NULL, NULL, NULL, &Shear, NULL);
    if (ok) ok = Rec.Write( (FLOAT) Shear.MakeDouble() );
    if (ok) ok = pFilter->Write(&Rec);

    return ok;
}
*/
/********************************************************************************************

>   BOOL CXaraFileTransforms::WriteGeneral(BaseCamelotFilter * pFilter, Matrix * pMatrix)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    03/06/96
    Inputs:     pFilter - filter to use
                pMatrix - matrix to save out
    Returns:    boolean value indicating success
    Purpose:    writes a general transformation matrix to the filter

********************************************************************************************/
/*

BOOL CXaraFileTransforms::WriteGeneral(BaseCamelotFilter * pFilter, Matrix * pMatrix)
{
    BOOL ok;

    FIXED16 abcd[4];
    INT32 ef[2];

    pMatrix->GetComponents(&abcd[0], &ef[0]);

    CXaraFileRecord Rec(TAG_TRANSFORM_GENERAL, TAG_TRANSFORM_GENERAL_SIZE);

    ok = Rec.Init();

    if (ok) ok = Rec.Write( (FLOAT) abcd[0].MakeDouble() );
    if (ok) ok = Rec.Write( (FLOAT) abcd[1].MakeDouble() );
    if (ok) ok = Rec.Write( (FLOAT) abcd[2].MakeDouble() );
    if (ok) ok = Rec.Write( (FLOAT) abcd[3].MakeDouble() );
    if (ok) ok = Rec.Write( ef[0] );
    if (ok) ok = Rec.Write( ef[1] );
    if (ok) ok = pFilter->Write(&Rec);

    return ok;
}

*/

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