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