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/*
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* Copyright (c) 2009 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: Juha Kauppinen, Mika Hokkanen
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*
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* Description: Photo Browser
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*
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*/
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#include "CDrawMagGlass.h"
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#include "TextureLoader.h"
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#include "DrawUtility.h"
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#include "ImagicConsts.h"
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GLfixed CDrawMagGlass::iMagGlassVertices[VERTICES_PER_LINE*VERTICES_PER_LINE*3];
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GLfixed CDrawMagGlass::iMagGlassTex[VERTICES_PER_LINE*VERTICES_PER_LINE*2];
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const TInt CDrawMagGlass::iMagGlassTriCount=(VERTICES_PER_LINE-1)*(VERTICES_PER_LINE-1)*2;
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GLushort CDrawMagGlass::iMagGlassIndices[CDrawMagGlass::iMagGlassTriCount*3];
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// Texture coordinate data
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const GLfixed CDrawMagGlass::iGlobalTexCoords[] =
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{
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//bitmap has to be flipped over
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0, 1<<16,
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1<<16, 1<<16,
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0, 0,
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1<<16, 0
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};
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CDrawMagGlass::CDrawMagGlass()
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{
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// No implementation required
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}
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CDrawMagGlass::~CDrawMagGlass()
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{
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}
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CDrawMagGlass* CDrawMagGlass::NewLC(CImagicContainerBrowser* aContainer, CDrawOneByOne* aDrawOneByOne)
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{
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CDrawMagGlass* self = new (ELeave) CDrawMagGlass();
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CleanupStack::PushL(self);
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self->ConstructL(aContainer,aDrawOneByOne);
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return self;
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}
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CDrawMagGlass* CDrawMagGlass::NewL(CImagicContainerBrowser* aContainer, CDrawOneByOne* aDrawOneByOne)
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{
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CDrawMagGlass* self = CDrawMagGlass::NewLC(aContainer,aDrawOneByOne);
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CleanupStack::Pop(); // self;
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return self;
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}
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void CDrawMagGlass::ConstructL(CImagicContainerBrowser* aContainer, CDrawOneByOne* aDrawOneByOne)
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{
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iContainer = aContainer;
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iDrawOneByOne = aDrawOneByOne;
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}
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TReal CDrawMagGlass::GetMagGlassZoomFactor()
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{
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DP1_IMAGIC(_L("CDrawMagGlass::GetMagGlassZoomFactor - magGlass: %f"), iMagGlassZoomFactor);
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return iMagGlassZoomFactor;
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}
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/*----------------------------------------------------------------------*/
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// Interpolates given value into target value with step
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//
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void CDrawMagGlass::Interpolate(float &aValue, const float aTarget, const float aStep)
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{
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//DP0_IMAGIC(_L("CImagicContainerBrowser::Interpolate"));
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// Calculate new value
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float diff = aTarget-aValue;
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aValue += diff * aStep * 0.2/*iTimeDiff*/ * 30;
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//float timediff = Min(0.1f, iTimeDiff); // so max value of timediff is 100tick (100ms)
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//aValue += diff * aStep * timediff * 30;
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// Check that value is in range
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if (aValue > aTarget && diff > 0)
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aValue = aTarget;
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if (aValue < aTarget && diff < 0)
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aValue = aTarget;
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}
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void CDrawMagGlass::InitDrawMagGlass()
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{
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iMagGlassZoomFactor = 1;
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TInt pos=0;
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for (TInt y=0; y<VERTICES_PER_LINE-1; y++)
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{
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TInt startvert=y*VERTICES_PER_LINE;
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for (TInt x=0; x<VERTICES_PER_LINE-1; x++, pos+=6)
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{
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// First triangle
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iMagGlassIndices[pos+0]=startvert+x;
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iMagGlassIndices[pos+1]=startvert+x+1;
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iMagGlassIndices[pos+2]=startvert+x+VERTICES_PER_LINE;
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// Second triangle
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iMagGlassIndices[pos+3]=startvert+x+VERTICES_PER_LINE;
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iMagGlassIndices[pos+4]=startvert+x+1;
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iMagGlassIndices[pos+5]=startvert+x+VERTICES_PER_LINE+1;
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}
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}
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}
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void CDrawMagGlass::DrawMagGlass(const TSize &aScreenPhysicalSize, TReal aImageAspectRatio)
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{
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TInt pos=0;
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#ifdef __WINS__
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// Fake touhcpoint for emulator
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iContainer->iLastTouchPoint.iX=320/2;
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iContainer->iLastTouchPoint.iY=240/2;
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#endif
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// Calculate finger position on screen
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// First calculate position on 0-1 range
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GLfixed xFinger;
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GLfixed yFinger;
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if(iContainer->GetScreenOrientation())
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{
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const TInt fingerOffset = 100;
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xFinger=iContainer->iLastTouchPoint.iX*(1<<16) / aScreenPhysicalSize.iWidth;
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yFinger=(iContainer->iLastTouchPoint.iY-fingerOffset)*(1<<16) / aScreenPhysicalSize.iHeight;
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}
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else
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{
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const TInt fingerOffset = 100;
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xFinger=(iContainer->iLastTouchPoint.iX-fingerOffset)*(1<<16) / aScreenPhysicalSize.iWidth;
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yFinger=(iContainer->iLastTouchPoint.iY)*(1<<16) / aScreenPhysicalSize.iHeight;
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}
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// Move center to match OpenGL center
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xFinger=-(0.5*(1<<16)-xFinger);
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yFinger=0.5*(1<<16)-yFinger;
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// Then scale it to opengl window size
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/*xFinger=xFinger*iContainer->iDrawOnebyOneW*2;
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yFinger=yFinger*iContainer->iDrawOnebyOneH*2;*/
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xFinger=xFinger*iDrawOneByOne->GetDrawOneByOneWidth()*2;
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yFinger=yFinger*iDrawOneByOne->GetDrawOneByOneHeight()*2;
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CImageData* data=iContainer->iIEngine->GetImageData(iContainer->GetCurrentIndex());
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if((data->GetOrientation() == 0 || data->GetOrientation() == 180) && !iContainer->GetScreenOrientation())
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{
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GLfixed tmpX=xFinger;
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GLfixed tmpY=yFinger;
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xFinger = tmpY;
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yFinger = tmpX * -1;
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}
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else if(data->GetOrientation() == 0)
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;
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else if((data->GetOrientation() == 90 || data->GetOrientation() == 270) && iContainer->GetScreenOrientation())
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{
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GLfixed tmpX=xFinger;
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GLfixed tmpY=yFinger;
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xFinger = tmpY;
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yFinger = tmpX * -1;
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}
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else if((data->GetOrientation() == 90 || data->GetOrientation() == 270) && !iContainer->GetScreenOrientation())
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{
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xFinger = xFinger * -1;
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yFinger = yFinger * -1;
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}
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//Interpolate(iMagGlassZoomFactor, 1.8, 0.05);
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//const float step=0.3;
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//const float step=0.2;
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/*
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if (iMagGlassZoomFactor < CDrawOneByOne::KMaxMagGlassZoomFactor-step)
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//iDrawOneByOne->IncMagGlassZoomFactor(step);
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iMagGlassZoomFactor += step;
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else
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//iDrawOneByOne->SetMagGlassZoomFactor(CDrawOneByOne::KMaxMagGlassZoomFactor);
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iMagGlassZoomFactor = CDrawOneByOne::KMaxMagGlassZoomFactor;
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*/
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Interpolate(iMagGlassZoomFactor, CDrawOneByOne::KMaxMagGlassZoomFactor, 0.1);
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DP1_IMAGIC(_L("CDrawMagGlass::DrawMagGlass - magGlass: %f"), iMagGlassZoomFactor);
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/*CImageData* data=iIEngine->GetImageData(iCurrentIndex, iImagicAppUi->GetUIDrawMode());
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if(data->GetOrientation() == 90 || data->GetOrientation() == 270)
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aImageAspectRatio = 1/aImageAspectRatio;*/
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// Create vertices
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pos=0;
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TInt texPos=0;
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for (TInt y=0; y<VERTICES_PER_LINE; y++)
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for (TInt x=0; x<VERTICES_PER_LINE; x++,pos+=3,texPos+=2)
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{
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// Calculate new vertex coordinates
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// First, calculate center
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GLfixed xCoord= x;
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GLfixed yCoord=-y;
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GLfixed zCoord= 0;
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// Then convert to fixed point
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xCoord*=(1<<16)/(VERTICES_PER_LINE-1);
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yCoord*=(1<<16)/(VERTICES_PER_LINE-1);
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// shift 0.5 to locate image center at (0,0)
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xCoord -= (1<<15);
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yCoord += (1<<15);
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// Set aspect ratio
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if (aImageAspectRatio > 1)
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yCoord *= (1/aImageAspectRatio);
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else
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xCoord *= (1*aImageAspectRatio);
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// Zoom ball sizes
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const float ballSize=0.35; // Zoom ball size
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const float zoomSize=0.2; // Sharp zoom size, has to be at least 0.1 smaller bigger than ball size
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// Calculate squared values
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const GLfixed ballSizeSquared=(ballSize*(1<<8))*(ballSize*(1<<8));
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const GLfixed zoomSizeSquared=(zoomSize*(1<<8))*(zoomSize*(1<<8));
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// Calculate distance to finger with both axis
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GLfixed xDist=xFinger-xCoord;
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GLfixed yDist=yFinger-yCoord;
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// Calculate squared distance with phytagoras
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GLfixed dist=(xDist/(1<<8))*(xDist/(1<<8)) + (yDist/(1<<8))*(yDist/(1<<8));
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// Are we close enough
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if (dist < ballSizeSquared)
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{
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// Zoom factor
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//const float iMagGlassZoomFactor=1.8;
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// Determine proper zoom for this vertex
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//float zoom=iContainer->iMagGlassZoomFactor;
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float zoom=iMagGlassZoomFactor;
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if (dist > zoomSizeSquared)
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{
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// We are between sharp zoom and ball edge
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// Calculat escale factor for zoom
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float scale=((float)(dist-zoomSizeSquared))/(ballSizeSquared-zoomSizeSquared);
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zoom=(zoom-1)*(1.0-scale)+1;
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}
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// Calculate new axis distances with zoom
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xDist*=zoom;
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yDist*=zoom;
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// Calculate new coordinates based on distances
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xCoord=xFinger-xDist;
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yCoord=yFinger-yDist;
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zCoord=128; // Set coordinate a bit above of original picture
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}
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// Store vertex data
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iMagGlassVertices[pos+0]=xCoord;
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iMagGlassVertices[pos+1]=yCoord;
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iMagGlassVertices[pos+2]=zCoord;
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// Set texture coodrinates
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iMagGlassTex[texPos+0]=x*(1<<16)/(VERTICES_PER_LINE-1);
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iMagGlassTex[texPos+1]=y*(1<<16)/(VERTICES_PER_LINE-1);
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}
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_FRONT);
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// Set vertex and texture coordinates and draw
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glVertexPointer(3, GL_FIXED, 0, iMagGlassVertices);
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glTexCoordPointer(2, GL_FIXED, 0, iMagGlassTex);
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glDrawElements(GL_TRIANGLES,iMagGlassTriCount*3,GL_UNSIGNED_SHORT,iMagGlassIndices);
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//glDrawElements(GL_LINES,triCount*3,GL_UNSIGNED_SHORT,indices);
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glDisable(GL_CULL_FACE);
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glDisable(GL_DEPTH_TEST);
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}
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