/*

* 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:     

*

*/

#ifndef HGVGCONSTANTS_H_

#define HGVGCONSTANTS_H_

// INCLUDES

#include <e32base.h>

namespace HgVgConstants

    {

    // maximum velocity of the spring (max velocity of view movement)

    const TReal KMaxSpringVelocity(300.0f);

    //

    const TReal KSpringVelocityToAnimationFactor(20.0f);

    // maximum quads in coverflow

    const TInt KMaxCoversVisible(17);

    // selected item index

    const TInt KSelectedItemIndex(8);

    // 

    const TReal KMinFlickSpeed(0.5f);

    const TInt KViewScrollingUpdateInterval( 16000 ); // > ~60 fps

    // The amound of pixels one item (virtually) takes on the screen (if you think coverflow as uniform list)

    const TReal KRowHeight(1.0f);

    const TInt KRowHeightStep(10);

    // PI

    const TReal PI(3.1415926535897932f);

    // Spring constant

    const TReal KSpringK(35.0f);

    // Spring damping

    const TReal KSpringDamping(11.0f);

    // maximum distance from target to snap 

    const TReal KPositionSnap(0.02);

    // maximum speed where to snap to item

    const TReal KMinSpringVelocity(0.05);

    // how far user must have dragged an item before 

    // we move to next item when user has stopped dragging gesture.

    const TReal KDragForwardThreshold(0.2f);

    // how many albums it is threoretically possible to go forward/backward

    // if the distance of a drag is fullscreen in length

    const TReal KItemsToDragOnFullScreenDrag(5.0f);

    // Physics update timestep

    const TReal KTimeStep(0.01f); // we update physics 100 fps

    // Width of one quad in 3d space

    const TReal KWorldQuadWidth(1);

    // size of default icon in pixels

    const TInt KDefaultIconWidth(240);

    const TInt KDefaultIconHeight(240);

    // duration of album cover flip selection animation

    const TInt KSelectionAnimationDuration(400000); // 0.4 seconds

    // EGL surface bits

    const TInt KSurfaceRedBits(8);

    const TInt KSurfaceGreenBits(8);

    const TInt KSurfaceBlueBits(8);

    const TInt KSurfaceAlphaBits(8);

    // used for conversions

    const TInt KOneSecondInMicroSeconds(1000000);

    // how long a flick gesture can tage before it is interpreted as dragging only

    const TInt KMaxFlickDuration(200000); // 2 ms

    // how long it user must press to move one index further

    const TInt KKeyPressDuration(800000);

    // factor used for converting swipe speed to view movement

    const TReal KSwipeSpeedFactor(0.4f);

    // Camera rotation factor to use in animation

    // when swiping

    const TReal KCameraRotationFactor(PI/8.0f);

    // zooming factor to use in animation

    const TReal KCameraZoomFactor(0);

    const TInt KLetterPopupSizeX(128);

    const TInt KLetterPopupSizeY(128);

    const TInt KLetterPopupFontSize(100);

    const TReal KMaxLetterPopupOpacity(0.85);

    const TReal KZOffset(1.0f);

    const TInt KMediaWallKeyScrollingUpdateInterval( 50000 );

    const TInt KGridRowCount(3);

    const TReal KGridFlipAngle(PI * 2);

    const TReal KSpaceBetweenGridItems(0.02f);

    const TReal KDefaultBlurDeviation(4);

    }

#endif /* HGVGCONSTANTS */