--- a/uifw/ganes/src/HgVgSpring.cpp	Thu Jul 29 14:21:56 2010 +0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,181 +0,0 @@
-/*
-* 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:
-*
-* Description:    
-*
-*/
-
-// INCLUDE FILES
-
-#include "HgVgSpring.h"
-#include "HgVgConstants.h"
-
-#include <e32math.h>
-
-using namespace HgVgConstants;
-
-
-THgVgSpring::THgVgSpring(TReal aSpringK, TReal aSpringDamping, 
-                TReal aSpringMaxVelocity, TReal aPositionSnap,
-                TReal aVelocitySnap) : 
-iPrevX(0), 
-iPrevY(0),
-iX(0), 
-iY(0),
-iEndX(0), 
-iEndY(0),
-iVelX(0), 
-iVelY(0),
-iAccumulator(0),
-iSpringK(aSpringK),
-iSpringDamping(aSpringDamping),
-iMaxSpringVelocity(aSpringMaxVelocity),
-iPositionSnap(aPositionSnap),
-iVelocitySnap(aVelocitySnap)
-    {
-    
-    }
-
-void THgVgSpring::SetConstants(TReal aSpringK, TReal aSpringDamping, 
-    TReal aSpringMaxVelocity, TReal aPositionSnap,
-    TReal aVelocitySnap)
-    {
-    iSpringK = aSpringK;
-    iSpringDamping = aSpringDamping;
-    iMaxSpringVelocity = aSpringMaxVelocity;
-    iPositionSnap = aPositionSnap;
-    iVelocitySnap = aVelocitySnap;
-    }
-
-
-void THgVgSpring::Reset(TReal aX, TReal aY)
-    {
-    iEndX = aX;
-    iEndY = aY;
-    Reset();
-    }
-
-void THgVgSpring::Reset()
-    {
-    iPrevX = iX = iEndX;
-    iPrevY = iY = iEndY;
-    iAccumulator = 0;
-    iVelX = 0;
-    iVelY = 0;
-    }
-
-void THgVgSpring::SetXY(TReal aX, TReal aY)
-    {
-    iPrevX = iX = aX;
-    iPrevY = iY = aY;
-    }
-
-void THgVgSpring::SetEnd(TReal aX, TReal aY)
-    {
-    iEndX = aX;
-    iEndY = aY;
-    }
-
-void THgVgSpring::SetVelocity(TReal aVx, TReal aVy)
-    {
-    iVelX = aVx;
-    iVelY = aVy;
-    }
-
-TBool THgVgSpring::IntegratePhysics(TReal aDeltaTime, TBool aEndCondition)
-    {
-    iAccumulator += aDeltaTime;    
-    while (iAccumulator >= KTimeStep)
-        {
-        iPrevX = iX;
-        iPrevY = iY;
-
-        // calculate spring force F = -kx - bv
-        TReal Fx = -(iX - iEndX) * iSpringK - iVelX * iSpringDamping;
-        TReal Fy = -(iY - iEndY) * iSpringK - iVelY * iSpringDamping;
-        
-        // do euler integration
-        iVelX += Fx * KTimeStep;
-        iVelY += Fy * KTimeStep;
-                
-        // limit velocity to certain max
-        if (Abs(iVelX) > iMaxSpringVelocity)
-            iVelX = (iVelX < 0) ? -iMaxSpringVelocity : iMaxSpringVelocity;
-        
-        if (Abs(iVelY) > iMaxSpringVelocity)
-            iVelY = (iVelY < 0) ? -iMaxSpringVelocity : iMaxSpringVelocity;
-
-        // do euler integration
-        iX += iVelX * KTimeStep;
-        iY += iVelY * KTimeStep;
-        
-        // decrease accumulator
-        iAccumulator -= KTimeStep;
-
-        // snap to item if close enough and speed is small enough
-        if (Abs(iX - iEndX) < iPositionSnap && Abs(iVelX) < iVelocitySnap &&
-                Abs(iY - iEndY) < iPositionSnap && Abs(iVelY) < iVelocitySnap && aEndCondition)
-            {
-            Reset();
-            return ETrue;
-            }
-                
-        }
-    
-    return EFalse;
-    }
-
-TReal THgVgSpring::GetX() const
-    {
-    return iX;
-    }
-
-TReal THgVgSpring::GetY() const
-    {
-    return iY;
-    }
-
-TReal THgVgSpring::EndX() const
-    {
-    return iEndX;
-    }
-
-TReal THgVgSpring::EndY() const
-    {
-    return iEndY;
-    }
-
-TReal THgVgSpring::VelX() const
-    {
-    return iVelX;
-    }
-
-TReal THgVgSpring::VelY() const
-    {
-    return iVelY;
-    }
-
-TReal THgVgSpring::GetInterpolatedX() const
-    {
-    TReal a = iAccumulator / KTimeStep;
-    return iX * (1.0 - a) + iPrevX * a;    
-    }
-
-TReal THgVgSpring::GetInterpolatedY() const
-    {
-    TReal a = iAccumulator / KTimeStep;
-    return iY * (1.0 - a) + iPrevY * a;
-    }
-
-
-// End of File