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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 source file
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*
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*/
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#include "GfxAffineTransform.h"
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#include "GfxGeneralPath.h"
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#include "Gfxtrignometric.h"
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#include "e32debug.h"
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// ==========================================================================
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// Notes:
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//
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// [ x'] [ m00 m01 m02 ] [ x ] [ m00x + m01y + m02 ]
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// [ y'] = [ m10 m11 m12 ] [ y ] = [ m10x + m11y + m12 ]
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// [ 1 ] [ 0 0 1 ] [ 1 ] [ 1 ]
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//
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// ==========================================================================
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// ==========================================================================
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// Constructor
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform::TGfxAffineTransform()
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// ---------------------------------------------------------------------------
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TGfxAffineTransform::TGfxAffineTransform()
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:iM00(KFloatFixOne),
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iM10(KFloatFixZero),
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iM01(KFloatFixZero),
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iM11(KFloatFixOne),
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iM02(KFloatFixZero),
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iM12(KFloatFixZero)
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{
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iTransType = KTransformIdentity;
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}
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// ==========================================================================
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// Constructor with elements
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform::TGfxAffineTransform( TReal32 aM00,
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// ---------------------------------------------------------------------------
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TGfxAffineTransform::TGfxAffineTransform( TReal32 aM00,
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TReal32 aM10,
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TReal32 aM01,
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TReal32 aM11,
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TReal32 aM02,
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TReal32 aM12 )
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{
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SetTransform( aM00, aM10, aM01, aM11, aM02, aM12 );
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}
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// --------------------------------------------------------------------------
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// TGfxAffineTransform::TGfxAffineTransform( TReal32 aM00,
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// ---------------------------------------------------------------------------
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TGfxAffineTransform::TGfxAffineTransform( TReal32 aM00,
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TReal32 aM10,
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TReal32 aM01,
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TReal32 aM11,
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TReal32 aM02,
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TReal32 aM12,
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TGfxTransformType aType )
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:iM00(aM00),
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iM10(aM10),
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iM01(aM01),
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iM11(aM11),
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iM02(aM02),
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iM12(aM12)
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{
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iTransType = aType;
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}
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// ==========================================================================
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// Generally used instance creation: Rotation matrix
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::GetRotateInstance( TReal32 aTheta )
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::GetRotateInstance( TReal32 aTheta )
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{
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TGfxAffineTransform tmp;
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tmp.SetToRotate( aTheta );
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return tmp;
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}
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// ==========================================================================
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// Generally used instance creation: another Rotation matrix
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::GetRotateInstance( TReal32 aTheta,
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::GetRotateInstance( TReal32 aTheta,
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const TFloatFixPt& aX,
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const TFloatFixPt& aY )
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{
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TGfxAffineTransform tmp;
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tmp.SetToRotate( aTheta );
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TFloatFixPt x = aX;
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TFloatFixPt y = aY;
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TFloatFixPt KOne( KFloatFixOne );
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tmp.iM02 = x * ( KOne - tmp.iM00 ) + y * tmp.iM10;
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tmp.iM12 = y * ( KOne - tmp.iM00 ) - x * tmp.iM10;
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tmp.iTransType |= KTransformTranslate;
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return tmp;
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}
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// ==========================================================================
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// Added Zoom Instance for better calculation
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::GetZoomInstance( sf,ax,ay);
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::GetZoomInstance( TReal32 aScaleFactor,
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const TFloatFixPt& aX,
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const TFloatFixPt& aY )
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{
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TFloatFixPt KOne( KFloatFixOne );
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TGfxAffineTransform tmp;
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tmp.iM00 = aScaleFactor;
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tmp.iM11 = aScaleFactor;
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TMatrixElType x = ( TMatrixElType ) aX;
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TMatrixElType y = ( TMatrixElType ) aY;
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tmp.iM02 = x * ( KOne - tmp.iM00 );
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tmp.iM12 = y * ( KOne - tmp.iM11 );
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tmp.iTransType |= KTransformTranslate | KTransformScale;
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return tmp;
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}
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// --------------------------------------------------------------------------
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// void TGfxAffineTransform::SetToRotate( TReal32 aTheta )
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// ---------------------------------------------------------------------------
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void TGfxAffineTransform::SetToRotate( TReal32 aTheta )
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{
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TFloatFixPt KZero;
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#ifdef SVG_FLOAT_BUILD
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TFloatFixPt cs = TFloatFixPt::CosFloatDouble( aTheta ); //(GfxMath::svgScalarCos((TInt32)(aTheta * TReal(0x10000))));
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TFloatFixPt sn = TFloatFixPt::SinFloatDouble( aTheta ); //(GfxMath::svgScalarSin((TInt32)(aTheta * TReal(0x10000))));
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#else
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TFloatFixPt cs (GfxMath::svgScalarCos((TInt32)(aTheta * TReal(0x10000))), ETrue);
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TFloatFixPt sn (GfxMath::svgScalarSin((TInt32)(aTheta * TReal(0x10000))), ETrue);
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#endif
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iM00 = cs;
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iM10 = sn;
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iM01 = KZero - sn;
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iM11 = cs;
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iM02 = KZero;
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iM12 = KZero;
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iTransType = KTransformShear | KTransformScale;
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}
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// ==========================================================================
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// Generally used instance creation: Scale matrix
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::GetScaleInstance( TReal32 aSx,
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::GetScaleInstance( TReal32 aSx,
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TReal32 aSy )
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{
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return TGfxAffineTransform( ( TReal32 ) aSx,
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0.0f,
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0.0f,
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( TReal32 ) aSy,
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0.0f,
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0.0f,
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KTransformScale );
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}
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// ==========================================================================
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// Generally used instance creation: Shear matrix
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::GetShearInstance( TReal32 aShx,
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::GetShearInstance( TReal32 aShx,
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TReal32 aShy )
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{
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#ifdef SVG_FLOAT_BUILD
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TFloatFixPt tnshx = TFloatFixPt::TanFloatDouble( aShx ); //(GfxMath::svgScalarTan(TInt(aShx*0x10000)));
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TFloatFixPt tnshy = TFloatFixPt::TanFloatDouble( aShy ); //(GfxMath::svgScalarTan(TInt(aShy*0x10000)));
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#else
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TFloatFixPt tnshx(GfxMath::svgScalarTan(TInt(aShx*0x10000)), ETrue);
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TFloatFixPt tnshy(GfxMath::svgScalarTan(TInt(aShy*0x10000)), ETrue);
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#endif
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return TGfxAffineTransform( 1.0f,
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TReal32(tnshy),
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TReal32(tnshx),
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1.0f,
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0.0f,
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0.0f,
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KTransformShear );
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}
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// ==========================================================================
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// Generally used instance creation: Translate matrix
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// ==========================================================================
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::GetTranslateInstance( const TFixPt& aTx,
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::GetTranslateInstance( const TFloatFixPt& aTx,
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const TFloatFixPt& aTy )
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{
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return TGfxAffineTransform( 1.0f,
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0.0f,
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0.0f,
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1.0f,
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( TReal32 ) aTx,
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( TReal32 ) aTy,
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KTransformTranslate );
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::Determinant() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::Determinant() const
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{
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return iM00 * iM11 - iM10 * iM01;
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}
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// --------------------------------------------------------------------------
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// TBool TGfxAffineTransform::IsIdentity() const
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// ---------------------------------------------------------------------------
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TBool TGfxAffineTransform::IsIdentity() const
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{
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return ( (int)iTransType == KTransformIdentity );
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::ScaleX() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::ScaleX() const
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{
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return iM00;
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::ScaleY() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::ScaleY() const
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{
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return iM11;
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::ShearX() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::ShearX() const
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{
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return iM01;
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::ShearY() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::ShearY() const
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{
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return iM10;
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::TranslateX() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::TranslateX() const
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{
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return iM02;
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}
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// --------------------------------------------------------------------------
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// TReal32 TGfxAffineTransform::TranslateY() const
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// ---------------------------------------------------------------------------
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TReal32 TGfxAffineTransform::TranslateY() const
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{
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return iM12;
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}
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// --------------------------------------------------------------------------
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// void TGfxAffineTransform::Concatenate( const TGfxAffineTransform& aTransform )
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// ---------------------------------------------------------------------------
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void TGfxAffineTransform::Concatenate( const TGfxAffineTransform& aTransform )
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{
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if ( IsIdentity() )
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{
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iM00 = aTransform.iM00;
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iM01 = aTransform.iM01;
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iM02 = aTransform.iM02;
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iM11 = aTransform.iM11;
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iM10 = aTransform.iM10;
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iM12 = aTransform.iM12;
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iTransType = aTransform.iTransType;
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}
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else if ( aTransform.IsIdentity() )
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{
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// Do nothing
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}
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else
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{
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TFloatFixPt m0, m1;
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m0 = iM00;
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m1 = iM01;
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iM00 = aTransform.iM00 * m0 + aTransform.iM10 * m1;
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iM01 = aTransform.iM01 * m0 + aTransform.iM11 * m1;
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iM02 += aTransform.iM02 * m0 + aTransform.iM12 * m1;
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m0 = iM10;
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m1 = iM11;
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iM11 = aTransform.iM01 * m0 + aTransform.iM11 * m1;
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iM10 = aTransform.iM00 * m0 + aTransform.iM10 * m1;
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iM12 += aTransform.iM02 * m0 + aTransform.iM12 * m1;
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iTransType |= aTransform.iTransType;
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}
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}
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// --------------------------------------------------------------------------
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// TGfxAffineTransform TGfxAffineTransform::CreateInverse()
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// ---------------------------------------------------------------------------
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TGfxAffineTransform TGfxAffineTransform::CreateInverse()
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{
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TFloatFixPt KZero;
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TFloatFixPt det = iM00* iM11 - iM01* iM10;
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if ( det == KZero )
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return TGfxAffineTransform();
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else
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{
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#ifdef SVG_FLOAT_BUILD
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TFloatFixPt idet = TFloatFixPt(1.0f) / det;
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#else
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TFloatFixPt idet = TFloatFixPt(0x10000,ETrue)/ det;
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#endif
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return TGfxAffineTransform( iM11 * idet,
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KZero - iM10 * idet,
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KZero - iM01 * idet,
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iM00 * idet,
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( iM01 * iM12 - iM11 * iM02 ) * idet,
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( iM10 * iM02 - iM00 * iM12 ) * idet );
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}
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}
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// --------------------------------------------------------------------------
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362 |
// void TGfxAffineTransform::Rotate( TReal32 aTheta )
|
|
|
363 |
// ---------------------------------------------------------------------------
|
|
|
364 |
void TGfxAffineTransform::Rotate( TReal32 aTheta )
|
|
|
365 |
{
|
|
|
366 |
Concatenate( GetRotateInstance( aTheta ) );
|
|
|
367 |
iTransType |= ( KTransformShear | KTransformScale );
|
|
|
368 |
}
|
|
|
369 |
|
|
|
370 |
// --------------------------------------------------------------------------
|
|
|
371 |
// void TGfxAffineTransform::Rotate( TReal32 aTheta,
|
|
|
372 |
// ---------------------------------------------------------------------------
|
|
|
373 |
void TGfxAffineTransform::Rotate( TReal32 aTheta,
|
|
|
374 |
const TFloatFixPt& aX,
|
|
|
375 |
const TFloatFixPt& aY )
|
|
|
376 |
{
|
|
|
377 |
Concatenate( GetRotateInstance( aTheta, aX, aY ) );
|
|
|
378 |
iTransType |= ( KTransformShear | KTransformScale | KTransformTranslate );
|
|
|
379 |
}
|
|
|
380 |
|
|
|
381 |
// --------------------------------------------------------------------------
|
|
|
382 |
// void TGfxAffineTransform::Scale( TReal32 aSx, TReal32 aSy )
|
|
|
383 |
// ---------------------------------------------------------------------------
|
|
|
384 |
void TGfxAffineTransform::Scale( TReal32 aSx, TReal32 aSy )
|
|
|
385 |
{
|
|
|
386 |
Concatenate( GetScaleInstance( aSx, aSy ) );
|
|
|
387 |
iTransType |= KTransformScale;
|
|
|
388 |
}
|
|
|
389 |
|
|
|
390 |
// --------------------------------------------------------------------------
|
|
|
391 |
// void TGfxAffineTransform::Translate( const TFixPt& aTx,
|
|
|
392 |
// ---------------------------------------------------------------------------
|
|
|
393 |
void TGfxAffineTransform::Translate( const TFloatFixPt& aTx,
|
|
|
394 |
const TFloatFixPt& aTy )
|
|
|
395 |
{
|
|
|
396 |
Concatenate( GetTranslateInstance( aTx, aTy ) );
|
|
|
397 |
iTransType |= KTransformTranslate;
|
|
|
398 |
}
|
|
|
399 |
|
|
|
400 |
// --------------------------------------------------------------------------
|
|
|
401 |
// void TGfxAffineTransform::Shear( TReal32 aShX, TReal32 aShY )
|
|
|
402 |
// ---------------------------------------------------------------------------
|
|
|
403 |
void TGfxAffineTransform::Shear( TReal32 aShX, TReal32 aShY )
|
|
|
404 |
{
|
|
|
405 |
Concatenate( GetShearInstance( aShX, aShY ) );
|
|
|
406 |
iTransType |= KTransformShear;
|
|
|
407 |
}
|
|
|
408 |
|
|
|
409 |
// --------------------------------------------------------------------------
|
|
|
410 |
// void TGfxAffineTransform::SetTransform( TReal32 aM00,
|
|
|
411 |
// ---------------------------------------------------------------------------
|
|
|
412 |
void TGfxAffineTransform::SetTransform( TReal32 aM00,
|
|
|
413 |
TReal32 aM10,
|
|
|
414 |
TReal32 aM01,
|
|
|
415 |
TReal32 aM11,
|
|
|
416 |
TReal32 aM02,
|
|
|
417 |
TReal32 aM12 )
|
|
|
418 |
{
|
|
|
419 |
iM00 = aM00;
|
|
|
420 |
iM01 = aM01;
|
|
|
421 |
iM02 = aM02;
|
|
|
422 |
iM10 = aM10;
|
|
|
423 |
iM11 = aM11;
|
|
|
424 |
iM12 = aM12;
|
|
|
425 |
UpdateState();
|
|
|
426 |
}
|
|
|
427 |
|
|
|
428 |
// --------------------------------------------------------------------------
|
|
|
429 |
// void TGfxAffineTransform::Transform( TGfxPoint2D* aSrcPts,
|
|
|
430 |
// ---------------------------------------------------------------------------
|
|
|
431 |
void TGfxAffineTransform::Transform( TGfxPoint2D* aSrcPts,
|
|
|
432 |
TGfxPoint2D* aDstPts,
|
|
|
433 |
TInt32 aNumPts ) const
|
|
|
434 |
{
|
|
|
435 |
|
|
|
436 |
if ( (int)iTransType == KTransformIdentity )
|
|
|
437 |
{
|
|
|
438 |
if ( aSrcPts != aDstPts )
|
|
|
439 |
{
|
|
|
440 |
for ( TInt32 i = 0; i < aNumPts; i++ )
|
|
|
441 |
{
|
|
|
442 |
aDstPts[i] = aSrcPts[i];
|
|
|
443 |
}
|
|
|
444 |
}
|
|
|
445 |
return;
|
|
|
446 |
}
|
|
|
447 |
|
|
|
448 |
if ( (int)iTransType == KTransformScale )
|
|
|
449 |
{
|
|
|
450 |
for ( TInt32 i = 0; i < aNumPts; i++ )
|
|
|
451 |
{
|
|
|
452 |
aDstPts[i].iX = aSrcPts[i].iX * iM00;
|
|
|
453 |
aDstPts[i].iY = aSrcPts[i].iY * iM11;
|
|
|
454 |
}
|
|
|
455 |
}
|
|
|
456 |
else if ( (int)iTransType == KTransformTranslate )
|
|
|
457 |
{
|
|
|
458 |
for ( TInt32 i = 0; i < aNumPts; i++ )
|
|
|
459 |
{
|
|
|
460 |
aDstPts[i].iX = aSrcPts[i].iX + iM02;
|
|
|
461 |
aDstPts[i].iY = aSrcPts[i].iY + iM12;
|
|
|
462 |
}
|
|
|
463 |
}
|
|
|
464 |
else if ( (int)iTransType == ( KTransformScale | KTransformTranslate ) )
|
|
|
465 |
{
|
|
|
466 |
for ( TInt32 i = 0; i < aNumPts; i++ )
|
|
|
467 |
{
|
|
|
468 |
aDstPts[i].iX = ( aSrcPts[i].iX * iM00 ) + iM02;
|
|
|
469 |
aDstPts[i].iY = ( aSrcPts[i].iY * iM11 ) + iM12;
|
|
|
470 |
}
|
|
|
471 |
}
|
|
|
472 |
else
|
|
|
473 |
{
|
|
|
474 |
TFloatFixPt x, y;
|
|
|
475 |
|
|
|
476 |
for ( TInt32 i = 0; i < aNumPts; i++ )
|
|
|
477 |
{
|
|
|
478 |
x = aSrcPts[i].iX;
|
|
|
479 |
y = aSrcPts[i].iY;
|
|
|
480 |
aDstPts[i].iX = ( iM00 * x ) + ( iM01 * y ) + iM02;
|
|
|
481 |
aDstPts[i].iY = ( iM10 * x ) + ( iM11 * y ) + iM12;
|
|
|
482 |
}
|
|
|
483 |
}
|
|
|
484 |
}
|
|
|
485 |
|
|
|
486 |
// --------------------------------------------------------------------------
|
|
|
487 |
// void TGfxAffineTransform::Transform( TFixPt* aSrcPts,
|
|
|
488 |
// ---------------------------------------------------------------------------
|
|
|
489 |
void TGfxAffineTransform::Transform( TFloatFixPt* aSrcPts,
|
|
|
490 |
TFloatFixPt* aDstPts,
|
|
|
491 |
TInt32 aNumPts ) const
|
|
|
492 |
{
|
|
|
493 |
aNumPts <<= 1;
|
|
|
494 |
|
|
|
495 |
if ( (int)iTransType == KTransformIdentity )
|
|
|
496 |
{
|
|
|
497 |
if ( aSrcPts != aDstPts )
|
|
|
498 |
{
|
|
|
499 |
for ( TInt32 i = 0; i < aNumPts; i++ )
|
|
|
500 |
{
|
|
|
501 |
*aDstPts++ = *aSrcPts++;
|
|
|
502 |
*aDstPts++ = *aSrcPts++;
|
|
|
503 |
}
|
|
|
504 |
}
|
|
|
505 |
return;
|
|
|
506 |
}
|
|
|
507 |
|
|
|
508 |
if ( (int)iTransType == KTransformScale )
|
|
|
509 |
{
|
|
|
510 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
511 |
{
|
|
|
512 |
*aDstPts++ = *aSrcPts++ * iM00;
|
|
|
513 |
*aDstPts++ = *aSrcPts++ * iM11;
|
|
|
514 |
}
|
|
|
515 |
}
|
|
|
516 |
else if ( (int)iTransType == KTransformTranslate )
|
|
|
517 |
{
|
|
|
518 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
519 |
{
|
|
|
520 |
*aDstPts++ = *aSrcPts++ + iM02;
|
|
|
521 |
*aDstPts++ = *aSrcPts++ + iM12;
|
|
|
522 |
}
|
|
|
523 |
}
|
|
|
524 |
else if ( (int)iTransType == ( KTransformScale | KTransformTranslate ) )
|
|
|
525 |
{
|
|
|
526 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
527 |
{
|
|
|
528 |
*aDstPts++ = ( *aSrcPts++ * iM00 ) + iM02;
|
|
|
529 |
*aDstPts++ = ( *aSrcPts++ * iM11 ) + iM12;
|
|
|
530 |
}
|
|
|
531 |
}
|
|
|
532 |
else
|
|
|
533 |
{
|
|
|
534 |
TFloatFixPt x, y;
|
|
|
535 |
|
|
|
536 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
537 |
{
|
|
|
538 |
x = *aSrcPts++;
|
|
|
539 |
y = *aSrcPts++;
|
|
|
540 |
*aDstPts++ = ( iM00 * x ) + ( iM01 * y ) + iM02;
|
|
|
541 |
*aDstPts++ = ( iM10 * x ) + ( iM11 * y ) + iM12;
|
|
|
542 |
}
|
|
|
543 |
}
|
|
|
544 |
}
|
|
|
545 |
|
|
|
546 |
// --------------------------------------------------------------------------
|
|
|
547 |
// void TGfxAffineTransform::Transform( TFixPt* aSrcDstPts,
|
|
|
548 |
// ---------------------------------------------------------------------------
|
|
|
549 |
void TGfxAffineTransform::Transform( TFloatFixPt* aSrcDstPts,
|
|
|
550 |
TInt32 aNumPts ) const
|
|
|
551 |
{
|
|
|
552 |
if ( (int)iTransType == KTransformIdentity )
|
|
|
553 |
return;
|
|
|
554 |
|
|
|
555 |
aNumPts <<= 1;
|
|
|
556 |
|
|
|
557 |
if ( (int)iTransType == KTransformScale )
|
|
|
558 |
{
|
|
|
559 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
560 |
{
|
|
|
561 |
*aSrcDstPts++ *= iM00;
|
|
|
562 |
*aSrcDstPts++ *= iM11;
|
|
|
563 |
}
|
|
|
564 |
}
|
|
|
565 |
else if ( (int)iTransType == KTransformTranslate )
|
|
|
566 |
{
|
|
|
567 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
568 |
{
|
|
|
569 |
*aSrcDstPts++ += iM02;
|
|
|
570 |
*aSrcDstPts++ += iM12;
|
|
|
571 |
}
|
|
|
572 |
}
|
|
|
573 |
else if ( (int)iTransType == ( KTransformScale | KTransformTranslate ) )
|
|
|
574 |
{
|
|
|
575 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
576 |
{
|
|
|
577 |
*aSrcDstPts *= iM00;
|
|
|
578 |
*aSrcDstPts++ += iM02;
|
|
|
579 |
*aSrcDstPts *= iM11;
|
|
|
580 |
*aSrcDstPts++ += iM12;
|
|
|
581 |
}
|
|
|
582 |
}
|
|
|
583 |
else
|
|
|
584 |
{
|
|
|
585 |
TFloatFixPt x, y;
|
|
|
586 |
|
|
|
587 |
for ( TInt32 i = 0; i < aNumPts; i += 2 )
|
|
|
588 |
{
|
|
|
589 |
x = *aSrcDstPts;
|
|
|
590 |
y = *( aSrcDstPts + 1 );
|
|
|
591 |
*aSrcDstPts++ = ( iM00 * x ) + ( iM01 * y ) + iM02;
|
|
|
592 |
*aSrcDstPts++ = ( iM10 * x ) + ( iM11 * y ) + iM12;
|
|
|
593 |
}
|
|
|
594 |
}
|
|
|
595 |
}
|
|
|
596 |
|
|
|
597 |
// --------------------------------------------------------------------------
|
|
|
598 |
// void TGfxAffineTransform::UpdateState()
|
|
|
599 |
// ---------------------------------------------------------------------------
|
|
|
600 |
void TGfxAffineTransform::UpdateState()
|
|
|
601 |
{
|
|
|
602 |
TFloatFixPt KZero;
|
|
|
603 |
TFloatFixPt KOne( KFloatFixOne );
|
|
|
604 |
iTransType = KTransformIdentity;
|
|
|
605 |
|
|
|
606 |
if ( iM02 != KZero || iM12 != KZero )
|
|
|
607 |
iTransType |= KTransformTranslate;
|
|
|
608 |
|
|
|
609 |
if ( iM00 != KZero || iM11 != KZero )
|
|
|
610 |
iTransType |= KTransformScale;
|
|
|
611 |
|
|
|
612 |
if ( iM01 != KZero || iM10 != KZero )
|
|
|
613 |
iTransType |= KTransformShear;
|
|
|
614 |
|
|
|
615 |
if ( (int)iTransType == KTransformScale && iM00 == KOne && iM11 == KOne )
|
|
|
616 |
iTransType = KTransformIdentity;
|
|
|
617 |
}
|
|
|
618 |
|
|
|
619 |
// --------------------------------------------------------------------------
|
|
|
620 |
// TUint32 TGfxAffineTransform::TransformType()
|
|
|
621 |
// ---------------------------------------------------------------------------
|
|
|
622 |
TUint32 TGfxAffineTransform::TransformType()
|
|
|
623 |
{
|
|
|
624 |
return iTransType;
|
|
|
625 |
}
|
|
|
626 |
|
|
|
627 |
// --------------------------------------------------------------------------
|
|
|
628 |
// void TGfxAffineTransform::Print()
|
|
|
629 |
// prints out the matrix
|
|
|
630 |
// ---------------------------------------------------------------------------
|
|
|
631 |
void TGfxAffineTransform::Print()
|
|
|
632 |
{
|
|
|
633 |
RDebug::Printf("a=%f b=%f c=%f d=%f e=%f f=%f", (TReal32)iM00, (TReal32)iM10, (TReal32)iM01, (TReal32)iM11, (TReal32)iM02, (TReal32)iM12);
|
|
|
634 |
}
|
|
|
635 |
|
|
|
636 |
// --------------------------------------------------------------------------
|
|
|
637 |
// Get the scaling factor set in this transform. This function returns correctly
|
|
|
638 |
// for a uniform scaling in both directions only.
|
|
|
639 |
// ---------------------------------------------------------------------------
|
|
|
640 |
TFloatFixPt TGfxAffineTransform::ScalingFactor() const
|
|
|
641 |
{
|
|
|
642 |
TGfxPoint2D ep( 1, 0 ), org( 2, 0 );
|
|
|
643 |
Transform( &ep, & ep, 1 );
|
|
|
644 |
Transform( &org, & org, 1 );
|
|
|
645 |
ep.iX -= org.iX;
|
|
|
646 |
ep.iY -= org.iY;
|
|
|
647 |
return TFloatFixPt::Sqrt( ep.iX * ep.iX + ep.iY * ep.iY );
|
|
|
648 |
}
|
|
|
649 |
|
|
|
650 |
|
|
|
651 |
|
|
|
652 |
// --------------------------------------------------------------------------
|
|
|
653 |
//
|
|
|
654 |
// Appends this transform with the existing transform
|
|
|
655 |
// Multiply in reverse order
|
|
|
656 |
// For Ex: In cases of zoom, rotate and pan of already transformed content.
|
|
|
657 |
// If T is the existing transform and zoom operation has to be applied to it
|
|
|
658 |
// the resultant transform would be Z*T.
|
|
|
659 |
//
|
|
|
660 |
// void TGfxAffineTransform::AppendTransform( const TGfxAffineTransform& aTransform )
|
|
|
661 |
// ---------------------------------------------------------------------------
|
|
|
662 |
void TGfxAffineTransform::AppendTransform( const TGfxAffineTransform& aTransform )
|
|
|
663 |
{
|
|
|
664 |
|
|
|
665 |
if ( IsIdentity() )
|
|
|
666 |
{
|
|
|
667 |
iM00 = aTransform.iM00;
|
|
|
668 |
iM01 = aTransform.iM01;
|
|
|
669 |
iM02 = aTransform.iM02;
|
|
|
670 |
iM11 = aTransform.iM11;
|
|
|
671 |
iM10 = aTransform.iM10;
|
|
|
672 |
iM12 = aTransform.iM12;
|
|
|
673 |
iTransType = aTransform.iTransType;
|
|
|
674 |
}
|
|
|
675 |
else if ( aTransform.IsIdentity() )
|
|
|
676 |
{
|
|
|
677 |
// Do nothing
|
|
|
678 |
}
|
|
|
679 |
else
|
|
|
680 |
{
|
|
|
681 |
TMatrixElType m00, m01,m02,m10,m11,m12;
|
|
|
682 |
m00 = iM00;
|
|
|
683 |
m01 = iM01;
|
|
|
684 |
m02 = iM02;
|
|
|
685 |
m10 = iM10;
|
|
|
686 |
m11 = iM11;
|
|
|
687 |
m12 = iM12;
|
|
|
688 |
iM00 = aTransform.iM00 * m00 + aTransform.iM01 * m10;
|
|
|
689 |
iM01 = aTransform.iM00 * m01 + aTransform.iM01 * m11;
|
|
|
690 |
iM02 = aTransform.iM00 * m02 + aTransform.iM01 * m12 + aTransform.iM02;
|
|
|
691 |
|
|
|
692 |
iM10 = aTransform.iM10 * m00 + aTransform.iM11 * m10;
|
|
|
693 |
iM11 = aTransform.iM10 * m01 + aTransform.iM11 * m11;
|
|
|
694 |
iM12 = aTransform.iM10 * m02 + aTransform.iM11 * m12 + aTransform.iM12;
|
|
|
695 |
|
|
|
696 |
iTransType |= aTransform.iTransType;
|
|
|
697 |
}
|
|
|
698 |
}
|
|
|
699 |
|
|
|
700 |
// --------------------------------------------------------------------------
|
|
|
701 |
// void TGfxAffineTransform::UserRoatate( TReal32 aTheta,
|
|
|
702 |
// ---------------------------------------------------------------------------
|
|
|
703 |
void TGfxAffineTransform::UserRotate( TReal32 aTheta,
|
|
|
704 |
const TFloatFixPt& aX,
|
|
|
705 |
const TFloatFixPt& aY )
|
|
|
706 |
{
|
|
|
707 |
AppendTransform( GetRotateInstance( aTheta, aX, aY ) );
|
|
|
708 |
iTransType |= ( KTransformShear | KTransformScale | KTransformTranslate );
|
|
|
709 |
}
|
|
|
710 |
|
|
|
711 |
// --------------------------------------------------------------------------
|
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712 |
// void TGfxAffineTransform::UserZoom( TReal32 aScaleFactor,
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713 |
// ---------------------------------------------------------------------------
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714 |
void TGfxAffineTransform::UserZoom( TReal32 aScaleFactor,
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715 |
const TFloatFixPt& aX,
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716 |
const TFloatFixPt& aY )
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717 |
{
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718 |
AppendTransform( GetZoomInstance( aScaleFactor, aX, aY ) );
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719 |
iTransType |= ( KTransformScale | KTransformTranslate );
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720 |
}
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721 |
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722 |
// --------------------------------------------------------------------------
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723 |
// void TGfxAffineTransform::UserPan( const TFloatFixPt& aTx,
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|
724 |
// ---------------------------------------------------------------------------
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725 |
void TGfxAffineTransform::UserPan( const TFloatFixPt& aTx,
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|
726 |
const TFloatFixPt& aTy )
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|
727 |
{
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|
728 |
AppendTransform( GetTranslateInstance( aTx, aTy ) );
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|
729 |
iTransType |= KTransformTranslate;
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|
730 |
}
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731 |
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732 |
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|
733 |
//
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