axmol/tests/cpp-tests/Classes/Camera3DTest/Camera3DTest.cpp

/****************************************************************************
Copyright (c) 2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

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Permission is hereby granted, free of charge, to any person obtaining a copy
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#include "Camera3DTest.h"

USING_NS_CC;

enum
{
    IDC_NEXT = 100,
    IDC_BACK,
    IDC_RESTART
};

Camera3DTests::Camera3DTests()
{
    ADD_TEST_CASE(CameraRotationTest);
    ADD_TEST_CASE(Camera3DTestDemo);
    ADD_TEST_CASE(CameraCullingDemo);
#if (CC_TARGET_PLATFORM != CC_PLATFORM_WP8)
    // 3DEffect use custom shader which is not supported on WP8 yet. 
    ADD_TEST_CASE(FogTestDemo);
#endif
    ADD_TEST_CASE(CameraArcBallDemo);
}

//------------------------------------------------------------------
//
// Camera Rotation Test
//
//------------------------------------------------------------------
CameraRotationTest::CameraRotationTest()
{

    auto s = Director::getInstance()->getWinSize();
    
    _camControlNode = Node::create();
    _camControlNode->setNormalizedPosition(Vec2(.5,.5));
    addChild(_camControlNode);

    _camNode = Node::create();
    _camNode->setPositionZ(Camera::getDefaultCamera()->getPosition3D().z);
    _camControlNode->addChild(_camNode);

    auto sp3d = Sprite3D::create();
    sp3d->setPosition(s.width/2, s.height/2);
    addChild(sp3d);
    
    auto lship = Label::create();
    lship->setString("Ship");
    lship->setPosition(0, 20);
    sp3d->addChild(lship);
    
    //Billboards
    //Yellow is at the back
    bill1 = BillBoard::create("Images/Icon.png");
    bill1->setPosition3D(Vec3(50, 10, -10));
    bill1->setColor(Color3B::YELLOW);
    bill1->setScale(0.6f);
    sp3d->addChild(bill1);
    
    l1 = Label::create();
    l1->setPosition(Vec2(0,-10));
    l1->setString("Billboard1");
    l1->setColor(Color3B::WHITE);
    l1->setScale(3);
    bill1->addChild(l1);

    auto p1 = CCParticleSystemQuad::create("Particles/SmallSun.plist");
    p1->setPosition(30,80);
    bill1->addChild(p1);
    
    bill2 = BillBoard::create("Images/Icon.png");
    bill2->setPosition3D(Vec3(-50, -10, 10));
    bill2->setScale(0.6f);
    sp3d->addChild(bill2);
    
    l2 = Label::create();
    l2->setString("Billboard2");
    l2->setPosition(Vec2(0,-10));
    l2->setColor(Color3B::WHITE);
    l2->setScale(3);
    bill2->addChild(l2);
    
    auto p2 = CCParticleSystemQuad::create("Particles/SmallSun.plist");
    p2->setPosition(30,80);
    bill2->addChild(p2);

    //3D models
    auto model = Sprite3D::create("Sprite3DTest/boss1.obj");
    model->setScale(4);
    model->setTexture("Sprite3DTest/boss.png");
    model->setPosition3D(Vec3(s.width/2, s.height/2, 0));
    addChild(model);

    //Listener
    _lis = EventListenerTouchOneByOne::create();
    _lis->onTouchBegan = [this](Touch* t, Event* e) {
        return true;
    };

    _lis->onTouchMoved = [this](Touch* t, Event* e) {
        float dx = t->getDelta().x;
        Vec3 rot = _camControlNode->getRotation3D();
        rot.y += dx;
        _camControlNode->setRotation3D(rot);

        Vec3 worldPos;
        _camNode->getNodeToWorldTransform().getTranslation(&worldPos);

        Camera::getDefaultCamera()->setPosition3D(worldPos);
        Camera::getDefaultCamera()->lookAt(_camControlNode->getPosition3D());
    };

    Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(_lis, this);
    
    schedule(schedule_selector(CameraRotationTest::update));
}

CameraRotationTest::~CameraRotationTest()
{
    Director::getInstance()->getEventDispatcher()->removeEventListener(_lis);
}

std::string CameraRotationTest::title() const
{
    return "Camera Rotation Test";
}

std::string CameraRotationTest::subtitle() const
{
    return "Slide to rotate";
}

void CameraRotationTest::onEnter()
{
    CameraBaseTest::onEnter();
}

void CameraRotationTest::onExit()
{
    CameraBaseTest::onExit();
}

void CameraRotationTest::update(float dt)
{
}

//------------------------------------------------------------------
//
// Camera3DTestDemo
//
//------------------------------------------------------------------
Camera3DTestDemo::Camera3DTestDemo(void)
: _incRot(nullptr)
, _decRot(nullptr)
, _camera(nullptr)
, _bZoomOut(false)
, _bZoomIn(false)
, _bRotateLeft(false)
, _bRotateRight(false)
{
}
Camera3DTestDemo::~Camera3DTestDemo(void)
{
}
void Camera3DTestDemo::reachEndCallBack()
{
}
std::string Camera3DTestDemo::title() const
{
    return "Testing Camera";
}

void Camera3DTestDemo::scaleCameraCallback(Ref* sender,float value)
{
    if(_camera&& _cameraType!=CameraType::FirstPerson)
    {
        Vec3 cameraPos=  _camera->getPosition3D();
        cameraPos+= cameraPos.getNormalized()*value;
        _camera->setPosition3D(cameraPos);
    }
}
void Camera3DTestDemo::rotateCameraCallback(Ref* sender,float value)
{
    if(_cameraType==CameraType::Free || _cameraType==CameraType::FirstPerson)
    {
        Vec3  rotation3D= _camera->getRotation3D();
        rotation3D.y+= value;
        _camera->setRotation3D(rotation3D);
    }
}
void Camera3DTestDemo::SwitchViewCallback(Ref* sender, CameraType cameraType)
{
    if(_cameraType==cameraType)
    {
        return ;
    }
    _cameraType = cameraType;
    if(_cameraType==CameraType::Free)
    {
        _camera->setPosition3D(Vec3(0, 130, 130) + _sprite3D->getPosition3D());
        _camera->lookAt(_sprite3D->getPosition3D());
        
        _RotateRightlabel->setColor(Color3B::WHITE);
        _RotateLeftlabel->setColor(Color3B::WHITE);
        _ZoomInlabel->setColor(Color3B::WHITE);
        _ZoomOutlabel->setColor(Color3B::WHITE);
    }
    else if(_cameraType==CameraType::FirstPerson)
    {
        Vec3 newFaceDir;
        _sprite3D->getWorldToNodeTransform().getForwardVector(&newFaceDir);
        newFaceDir.normalize();
        _camera->setPosition3D(Vec3(0,35,0) + _sprite3D->getPosition3D());
        _camera->lookAt(_sprite3D->getPosition3D() + newFaceDir*50);
        
        _RotateRightlabel->setColor(Color3B::WHITE);
        _RotateLeftlabel->setColor(Color3B::WHITE);
        _ZoomInlabel->setColor(Color3B::GRAY);
        _ZoomOutlabel->setColor(Color3B::GRAY);
    }
    else if(_cameraType==CameraType::ThirdPerson)
    {
        _camera->setPosition3D(Vec3(0, 130, 130) + _sprite3D->getPosition3D());
        _camera->lookAt(_sprite3D->getPosition3D());
        
        _RotateRightlabel->setColor(Color3B::GRAY);
        _RotateLeftlabel->setColor(Color3B::GRAY);
        _ZoomInlabel->setColor(Color3B::WHITE);
        _ZoomOutlabel->setColor(Color3B::WHITE);
    }
}
void Camera3DTestDemo::onEnter()
{
    CameraBaseTest::onEnter();
    _sprite3D=nullptr;
    auto s = Director::getInstance()->getWinSize();
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesBegan, this);
    listener->onTouchesMoved = CC_CALLBACK_2(Camera3DTestDemo::onTouchesMoved, this);
    listener->onTouchesEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
    auto layer3D=Layer::create();
    addChild(layer3D,0);
    _layer3D=layer3D;
    _curState=State_None;
    addNewSpriteWithCoords( Vec3(0,0,0),"Sprite3DTest/girl.c3b",true,0.2f,true);
    TTFConfig ttfConfig("fonts/arial.ttf", 20);
    
    auto containerForLabel1 = Node::create();
    _ZoomOutlabel = Label::createWithTTF(ttfConfig,"zoom out");
    _ZoomOutlabel->setPosition(s.width-50, VisibleRect::top().y-30);
    containerForLabel1->addChild(_ZoomOutlabel);
    addChild(containerForLabel1, 10);
    
    auto listener1 = EventListenerTouchOneByOne::create();
    listener1->setSwallowTouches(true);
    
    listener1->onTouchBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesZoomOut, this);
    listener1->onTouchEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesZoomOutEnd, this);
    
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener1, _ZoomOutlabel);
    
    auto containerForLabel2 = Node::create();
    _ZoomInlabel = Label::createWithTTF(ttfConfig,"zoom in");
    _ZoomInlabel->setPosition(s.width-50, VisibleRect::top().y-100);
    containerForLabel2->addChild(_ZoomInlabel);
    addChild(containerForLabel2, 10);
    
    auto listener2 = EventListenerTouchOneByOne::create();
    listener2->setSwallowTouches(true);
    
    listener2->onTouchBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesZoomIn, this);
    listener2->onTouchEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesZoomInEnd, this);
    
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener2, _ZoomInlabel);
    
    auto containerForLabel3 = Node::create();
    _RotateLeftlabel = Label::createWithTTF(ttfConfig,"rotate left");
    _RotateLeftlabel->setPosition(s.width-50, VisibleRect::top().y-170);
    containerForLabel3->addChild(_RotateLeftlabel);
    addChild(containerForLabel3, 10);
    
    auto listener3 = EventListenerTouchOneByOne::create();
    listener3->setSwallowTouches(true);
    
    listener3->onTouchBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesRotateLeft, this);
    listener3->onTouchEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesRotateLeftEnd, this);
    
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener3, _RotateLeftlabel);
    
    auto containerForLabel4 = Node::create();
    _RotateRightlabel = Label::createWithTTF(ttfConfig,"rotate right");
    _RotateRightlabel->setPosition(s.width-50, VisibleRect::top().y-240);
    containerForLabel4->addChild(_RotateRightlabel);
    addChild(containerForLabel4, 10);
    
    auto listener4 = EventListenerTouchOneByOne::create();
    listener4->setSwallowTouches(true);
    
    listener4->onTouchBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesRotateRight, this);
    listener4->onTouchEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesRotateRightEnd, this);
    
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener4, _RotateRightlabel);
    
    auto label1 = Label::createWithTTF(ttfConfig,"free ");
    auto menuItem1 = MenuItemLabel::create(label1, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::Free));
    auto label2 = Label::createWithTTF(ttfConfig,"third person");
    auto menuItem2 = MenuItemLabel::create(label2, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::ThirdPerson));
    auto label3 = Label::createWithTTF(ttfConfig,"first person");
    auto menuItem3 = MenuItemLabel::create(label3, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::FirstPerson));
    auto menu = Menu::create(menuItem1, menuItem2, menuItem3, nullptr);
    
    menu->setPosition(Vec2::ZERO);
    
    menuItem1->setPosition(VisibleRect::left().x+100, VisibleRect::top().y-50);
    menuItem2->setPosition(VisibleRect::left().x+100, VisibleRect::top().y -100);
    menuItem3->setPosition(VisibleRect::left().x+100, VisibleRect::top().y -150);
    addChild(menu, 0);
    schedule(CC_SCHEDULE_SELECTOR(Camera3DTestDemo::updateCamera), 0.0f);
    if (_camera == nullptr)
    {
        _camera=Camera::createPerspective(60, (GLfloat)s.width/s.height, 1, 1000);
        _camera->setCameraFlag(CameraFlag::USER1);
        _layer3D->addChild(_camera);
    }
    SwitchViewCallback(this,CameraType::ThirdPerson);
    DrawNode3D* line =DrawNode3D::create();
    //draw x
    for( int j =-20; j<=20 ;j++)
    {
        line->drawLine(Vec3(-100, 0, 5*j),Vec3(100,0,5*j),Color4F(1,0,0,1));
    }
    //draw z
    for( int j =-20; j<=20 ;j++)
    {
        line->drawLine(Vec3(5*j, 0, -100),Vec3(5*j,0,100),Color4F(0,0,1,1));
    }
    //draw y
    line->drawLine(Vec3(0, -50, 0),Vec3(0,0,0),Color4F(0,0.5,0,1));
    line->drawLine(Vec3(0, 0, 0),Vec3(0,50,0),Color4F(0,1,0,1));
    _layer3D->addChild(line);

    _layer3D->setCameraMask(2);
}
void Camera3DTestDemo::onExit()
{
    CameraBaseTest::onExit();
    if (_camera)
    {
        _camera = nullptr;
    }
}

void Camera3DTestDemo::addNewSpriteWithCoords(Vec3 p,std::string fileName,bool playAnimation,float scale,bool bindCamera)
{
    auto sprite = Sprite3D::create(fileName);
    _layer3D->addChild(sprite);
    float globalZOrder=sprite->getGlobalZOrder();
    sprite->setPosition3D( Vec3( p.x, p.y,p.z) );
    sprite->setGlobalZOrder(globalZOrder);
    if(playAnimation)
    {
        auto animation = Animation3D::create(fileName,"Take 001");
        if (animation)
        {
            auto animate = Animate3D::create(animation);
            sprite->runAction(RepeatForever::create(animate));
        }
    }
    if(bindCamera)
    {
        _sprite3D=sprite;
    }
    sprite->setScale(scale);  
}
void Camera3DTestDemo::onTouchesBegan(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    for ( auto &item: touches )
    {
        auto touch = item;
        auto location = touch->getLocation();
    }
}
void Camera3DTestDemo::onTouchesMoved(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    if(touches.size()==1)
    {
        auto touch = touches[0];
        auto location = touch->getLocation();
        Point newPos = touch->getPreviousLocation()-location;
        if(_cameraType==CameraType::Free || _cameraType==CameraType::FirstPerson)
        {
            Vec3 cameraDir;
            Vec3 cameraRightDir;
            _camera->getNodeToWorldTransform().getForwardVector(&cameraDir);
            cameraDir.normalize();
            cameraDir.y=0;
            _camera->getNodeToWorldTransform().getRightVector(&cameraRightDir);
            cameraRightDir.normalize();
            cameraRightDir.y=0;
            Vec3 cameraPos=  _camera->getPosition3D();
            cameraPos+=cameraDir*newPos.y*0.1f;
            cameraPos+=cameraRightDir*newPos.x*0.1f;
            _camera->setPosition3D(cameraPos);
            if(_sprite3D &&  _cameraType==CameraType::FirstPerson)
            {
                _sprite3D->setPosition3D(Vec3(_camera->getPositionX(),0,_camera->getPositionZ()));
                _targetPos=_sprite3D->getPosition3D();
            }
        }
    }
}
void Camera3DTestDemo::move3D(float elapsedTime)
{
    if(_sprite3D)
    {
        Vec3 curPos=  _sprite3D->getPosition3D();
        Vec3 newFaceDir = _targetPos - curPos;
        newFaceDir.y = 0.0f;
        newFaceDir.normalize();
        Vec3 offset = newFaceDir * 25.0f * elapsedTime;
        curPos+=offset;
        _sprite3D->setPosition3D(curPos);
        offset.x=offset.x;
        offset.z=offset.z;
        if(_cameraType==CameraType::ThirdPerson)
        {
            Vec3 cameraPos= _camera->getPosition3D();
            cameraPos.x+=offset.x;
            cameraPos.z+=offset.z;
            _camera->setPosition3D(cameraPos);
        }
    }
}
void Camera3DTestDemo::updateState(float elapsedTime)
{
    if(_sprite3D)
    {
        Vec3 curPos=  _sprite3D->getPosition3D();
        Vec3 curFaceDir;
        _sprite3D->getNodeToWorldTransform().getForwardVector(&curFaceDir);
        curFaceDir=-curFaceDir;
        curFaceDir.normalize();
        Vec3 newFaceDir = _targetPos - curPos;
        newFaceDir.y = 0.0f;
        newFaceDir.normalize();
        float cosAngle = std::fabs(Vec3::dot(curFaceDir,newFaceDir) - 1.0f);
        float dist = curPos.distanceSquared(_targetPos);
        if(dist<=4.0f)
        {
            if(cosAngle<=0.01f)
                _curState = State_Idle;
            else
                _curState = State_Rotate;
        }
        else
        {
            if(cosAngle>0.01f)
                _curState = State_Rotate | State_Move;
            else
                _curState = State_Move;
        }
    }
}
void Camera3DTestDemo::onTouchesEnded(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    for ( auto &item: touches )
    {
        auto touch = item;
        auto location = touch->getLocationInView();
        if(_camera)
        {
            if(_sprite3D && _cameraType==CameraType::ThirdPerson && _bZoomOut == false && _bZoomIn == false && _bRotateLeft == false && _bRotateRight == false)
            {
                Vec3 nearP(location.x, location.y, -1.0f), farP(location.x, location.y, 1.0f);
                
                auto size = Director::getInstance()->getWinSize();
                nearP = _camera->unproject(nearP);
                farP = _camera->unproject(farP);
                Vec3 dir(farP - nearP);
                float dist=0.0f;
                float ndd = Vec3::dot(Vec3(0,1,0),dir);
                if(ndd == 0)
                    dist=0.0f;
                float ndo = Vec3::dot(Vec3(0,1,0),nearP);
                dist= (0 - ndo) / ndd;
                Vec3 p =   nearP + dist *  dir;
                
                if( p.x > 100)
                    p.x = 100;
                if( p.x < -100)
                    p.x = -100;
                if( p.z > 100)
                    p.z = 100;
                if( p.z < -100)
                    p.z = -100;
                
                _targetPos=p;
            }
        }
    }
}
void onTouchesCancelled(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
}
void Camera3DTestDemo::updateCamera(float fDelta)
{
    if(_sprite3D)
    {
        if( _cameraType==CameraType::ThirdPerson)
        {
            updateState(fDelta);
            if(isState(_curState,State_Move))
            {
                move3D(fDelta);
                if(isState(_curState,State_Rotate))
                {
                    Vec3 curPos = _sprite3D->getPosition3D();
                    
                    Vec3 newFaceDir = _targetPos - curPos;
                    newFaceDir.y = 0;
                    newFaceDir.normalize();
                    Vec3 up;
                    _sprite3D->getNodeToWorldTransform().getUpVector(&up);
                    up.normalize();
                    Vec3 right;
                    Vec3::cross(-newFaceDir,up,&right);
                    right.normalize();
                    Vec3 pos = Vec3(0,0,0);
                    Mat4 mat;
                    mat.m[0] = right.x;
                    mat.m[1] = right.y;
                    mat.m[2] = right.z;
                    mat.m[3] = 0.0f;
                    
                    mat.m[4] = up.x;
                    mat.m[5] = up.y;
                    mat.m[6] = up.z;
                    mat.m[7] = 0.0f;
                    
                    mat.m[8]  = newFaceDir.x;
                    mat.m[9]  = newFaceDir.y;
                    mat.m[10] = newFaceDir.z;
                    mat.m[11] = 0.0f;
                    
                    mat.m[12] = pos.x;
                    mat.m[13] = pos.y;
                    mat.m[14] = pos.z;
                    mat.m[15] = 1.0f;
                    _sprite3D->setAdditionalTransform(&mat);
                }
            }
        }
        if(_bZoomOut == true)
        {
            if(_camera)
            {
                if(_cameraType == CameraType::ThirdPerson)
                {
                    Vec3 lookDir = _camera->getPosition3D() - _sprite3D->getPosition3D();
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(lookDir.length() <= 300)
                    {
                        cameraPos += lookDir.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
                else if(_cameraType == CameraType::Free)
                {
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(cameraPos.length() <= 300)
                    {
                        cameraPos += cameraPos.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
            }
        }
        if(_bZoomIn == true)
        {
            if(_camera)
            {
                if(_cameraType == CameraType::ThirdPerson)
                {
                    Vec3 lookDir = _camera->getPosition3D() - _sprite3D->getPosition3D();
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(lookDir.length() >= 50)
                    {
                        cameraPos -= lookDir.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
                else if(_cameraType == CameraType::Free)
                {
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(cameraPos.length() >= 50)
                    {
                        cameraPos -= cameraPos.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
            }
        }
        if(_bRotateLeft == true)
        {
            if(_cameraType==CameraType::Free || _cameraType==CameraType::FirstPerson)
            {
                Vec3  rotation3D= _camera->getRotation3D();
                rotation3D.y+= 1;
                _camera->setRotation3D(rotation3D);
            }
        }
        if(_bRotateRight == true)
        {
            if(_cameraType==CameraType::Free || _cameraType==CameraType::FirstPerson)
            {
                Vec3  rotation3D= _camera->getRotation3D();
                rotation3D.y-= 1;
                _camera->setRotation3D(rotation3D);
            }
        }
    }
}
bool Camera3DTestDemo::onTouchesCommon(Touch* touch, Event* event, bool* touchProperty)
{
    auto target = static_cast<Label*>(event->getCurrentTarget());
    
    Vec2 locationInNode = target->convertToNodeSpace(touch->getLocation());
    Size s = target->getContentSize();
    Rect rect = Rect(0, 0, s.width, s.height);
    
    if (rect.containsPoint(locationInNode))
    {
        *touchProperty = true;
        return true;
    }
    return false;
}
bool Camera3DTestDemo::isState(unsigned int state,unsigned int bit) const
{
    return (state & bit) == bit;
}
bool Camera3DTestDemo::onTouchesZoomOut(Touch* touch, Event* event)
{
    return Camera3DTestDemo::onTouchesCommon(touch, event, &_bZoomOut);
}
void Camera3DTestDemo::onTouchesZoomOutEnd(Touch* touch, Event* event)
{
    _bZoomOut = false;
}
bool Camera3DTestDemo::onTouchesZoomIn(Touch* touch, Event* event)
{
    return Camera3DTestDemo::onTouchesCommon(touch, event, &_bZoomIn);
}
void Camera3DTestDemo::onTouchesZoomInEnd(Touch* touch, Event* event)
{
    _bZoomIn = false;
}
bool Camera3DTestDemo::onTouchesRotateLeft(Touch* touch, Event* event)
{
    return Camera3DTestDemo::onTouchesCommon(touch, event, &_bRotateLeft);
}
void Camera3DTestDemo::onTouchesRotateLeftEnd(Touch* touch, Event* event)
{
    _bRotateLeft = false;
}
bool Camera3DTestDemo::onTouchesRotateRight(Touch* touch, Event* event)
{
    return Camera3DTestDemo::onTouchesCommon(touch, event, &_bRotateRight);
}
void Camera3DTestDemo::onTouchesRotateRightEnd(Touch* touch, Event* event)
{
    _bRotateRight = false;
}

////////////////////////////////////////////////////////////
// CameraCullingDemo
CameraCullingDemo::CameraCullingDemo(void)
: _layer3D(nullptr)
, _cameraType(CameraType::FirstPerson)
, _cameraFirst(nullptr)
, _cameraThird(nullptr)
, _moveAction(nullptr)
, _drawAABB(nullptr)
, _drawFrustum(nullptr)
, _row(3)
{
}
CameraCullingDemo::~CameraCullingDemo(void)
{
}

std::string CameraCullingDemo::title() const
{
    return "Camera Frustum Clipping";
}

void CameraCullingDemo::onEnter()
{
    CameraBaseTest::onEnter();

    schedule(schedule_selector(CameraCullingDemo::update), 0.0f);
    
    auto s = Director::getInstance()->getWinSize();
    /*auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesBegan, this);
    listener->onTouchesMoved = CC_CALLBACK_2(Camera3DTestDemo::onTouchesMoved, this);
    listener->onTouchesEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);*/
    auto layer3D=Layer::create();
    addChild(layer3D,0);
    _layer3D=layer3D;
    
    // swich camera
    MenuItemFont::setFontName("fonts/arial.ttf");
    MenuItemFont::setFontSize(20);
    
    auto menuItem1 = MenuItemFont::create("Switch Camera", CC_CALLBACK_1(CameraCullingDemo::switchViewCallback,this));
    menuItem1->setColor(Color3B(0,200,20));
    auto menu = Menu::create(menuItem1,NULL);
    menu->setPosition(Vec2::ZERO);
    menuItem1->setPosition(VisibleRect::left().x + 80, VisibleRect::top().y -70);
    addChild(menu, 1);
    
    // + -
    MenuItemFont::setFontSize(40);
    auto decrease = MenuItemFont::create(" - ", CC_CALLBACK_1(CameraCullingDemo::delSpriteCallback, this));
    decrease->setColor(Color3B(0,200,20));
    auto increase = MenuItemFont::create(" + ", CC_CALLBACK_1(CameraCullingDemo::addSpriteCallback, this));
    increase->setColor(Color3B(0,200,20));
    
    menu = Menu::create(decrease, increase, nullptr);
    menu->alignItemsHorizontally();
    menu->setPosition(Vec2(s.width - 60, VisibleRect::top().y -70));
    addChild(menu, 1);
    
    TTFConfig ttfCount("fonts/Marker Felt.ttf", 30);
    _labelSprite3DCount = Label::createWithTTF(ttfCount,"0 sprits");
    _labelSprite3DCount->setColor(Color3B(0,200,20));
    _labelSprite3DCount->setPosition(Vec2(s.width/2, VisibleRect::top().y -70));
    addChild(_labelSprite3DCount);
    
    // aabb drawNode3D
    _drawAABB = DrawNode3D::create();
    _drawAABB->setCameraMask((unsigned short) CameraFlag::USER1);
    addChild(_drawAABB);
    
    // frustum drawNode3D
    _drawFrustum = DrawNode3D::create();
    _drawFrustum->setCameraMask((unsigned short) CameraFlag::USER1);
    addChild(_drawFrustum);
    
    // set camera
    switchViewCallback(this);
    
    // add sprite
    addSpriteCallback(nullptr);
}

void CameraCullingDemo::onExit()
{
    CameraBaseTest::onExit();
    if (_cameraFirst)
    {
        _cameraFirst = nullptr;
    }
    if (_cameraThird)
    {
        _cameraThird = nullptr;
    }
}

void CameraCullingDemo::update(float dt)
{
    _drawAABB->clear();
    
    if(_cameraType == CameraType::ThirdPerson)
        drawCameraFrustum();
    
    Vector<Node*>& children = _layer3D->getChildren();
    Vec3 corners[8];
    
    for (const auto& iter: children)
    {
        const AABB& aabb = static_cast<Sprite3D*>(iter)->getAABB();
        if (_cameraFirst->isVisibleInFrustum(&aabb))
        {
            aabb.getCorners(corners);
            _drawAABB->drawCube(corners, Color4F(0, 1, 0, 1));
        }
    }
}

void CameraCullingDemo::reachEndCallBack()
{
    _cameraFirst->stopActionByTag(100);
    auto inverse = MoveTo::create(4.f, Vec2(-_cameraFirst->getPositionX(), 0));
    inverse->retain();
    
    _moveAction->release();
    _moveAction = inverse;
    auto rot = RotateBy::create(1.f, Vec3(0.f, 180.f, 0.f));
    auto seq = Sequence::create(rot, _moveAction, CallFunc::create(CC_CALLBACK_0(CameraCullingDemo::reachEndCallBack, this)), nullptr);
    seq->setTag(100);
    _cameraFirst->runAction(seq);
}

void CameraCullingDemo::switchViewCallback(Ref* sender)
{
    auto s = Director::getInstance()->getWinSize();
    
    if (_cameraFirst == nullptr)
    {
        _cameraFirst = Camera::createPerspective(30, (GLfloat)s.width/s.height, 10, 200);
        _cameraFirst->setCameraFlag(CameraFlag::USER8);
        _cameraFirst->setPosition3D(Vec3(-100,0,0));
        _cameraFirst->lookAt(Vec3(1000,0,0));
        _moveAction = MoveTo::create(4.f, Vec2(-_cameraFirst->getPositionX(), 0));
        _moveAction->retain();
        auto seq = Sequence::create(_moveAction, CallFunc::create(CC_CALLBACK_0(CameraCullingDemo::reachEndCallBack, this)), nullptr);
        seq->setTag(100);
        _cameraFirst->runAction(seq);
        addChild(_cameraFirst);
    }
    
    if (_cameraThird == nullptr)
    {
        _cameraThird = Camera::createPerspective(60, (GLfloat)s.width/s.height, 1, 1000);
        _cameraThird->setCameraFlag(CameraFlag::USER8);
        _cameraThird->setPosition3D(Vec3(0, 130, 130));
        _cameraThird->lookAt(Vec3(0,0,0));
        addChild(_cameraThird);
    }
    
    if(_cameraType == CameraType::FirstPerson)
    {
        _cameraType = CameraType::ThirdPerson;
        _cameraThird->setCameraFlag(CameraFlag::USER1);
        _cameraFirst->setCameraFlag(CameraFlag::USER8);
    }
    else if(_cameraType == CameraType::ThirdPerson)
    {
        _cameraType = CameraType::FirstPerson;
        _cameraFirst->setCameraFlag(CameraFlag::USER1);
        _cameraThird->setCameraFlag(CameraFlag::USER8);
        _drawFrustum->clear();
    }
}

void CameraCullingDemo::addSpriteCallback(Ref* sender)
{
    _layer3D->removeAllChildren();
    _objects.clear();
    _drawAABB->clear();
    
    ++_row;
    for (int x = -_row; x < _row; x++)
    {
        for (int z = -_row; z < _row; z++)
        {
            auto sprite = Sprite3D::create("Sprite3DTest/orc.c3b");
            sprite->setPosition3D(Vec3(x * 30, 0, z * 30));
            sprite->setRotation3D(Vec3(0,180,0));
            _objects.push_back(sprite);
            _layer3D->addChild(sprite);
        }
    }
    
    // set layer mask.
    _layer3D->setCameraMask( (unsigned short) CameraFlag::USER1);
    
    // update sprite number
    char szText[16];
    sprintf(szText,"%ld sprits",_layer3D->getChildrenCount());
    _labelSprite3DCount->setString(szText);
}

void CameraCullingDemo::delSpriteCallback(Ref* sender)
{
    if (_row == 0) return;
    
    _layer3D->removeAllChildren();
    _objects.clear();
    
    --_row;
    for (int x = -_row; x < _row; x++)
    {
        for (int z = -_row; z < _row; z++)
        {
            auto sprite = Sprite3D::create("Sprite3DTest/orc.c3b");
            sprite->setPosition3D(Vec3(x * 30, 0, z * 30));
            _objects.push_back(sprite);
            _layer3D->addChild(sprite);
        }
    }
    
    // set layer mask.
    _layer3D->setCameraMask((unsigned short) CameraFlag::USER1);
    
    // update sprite number
    char szText[16];
    sprintf(szText,"%ld sprits",_layer3D->getChildrenCount());
    _labelSprite3DCount->setString(szText);
}

void CameraCullingDemo::drawCameraFrustum()
{
    _drawFrustum->clear();
    auto size = Director::getInstance()->getWinSize();
    
    Color4F color(1.f, 1.f, 0.f, 1);
    
    // top-left
    Vec3 tl_0,tl_1;
    Vec3 src(0,0,0);
    tl_0 = _cameraFirst->unproject(src);
    src = Vec3(0,0,1);
    tl_1 = _cameraFirst->unproject(src);
    
    // top-right
    Vec3 tr_0,tr_1;
    src = Vec3(size.width,0,0);
    tr_0 = _cameraFirst->unproject(src);
    src = Vec3(size.width,0,1);
    tr_1 = _cameraFirst->unproject(src);
    
    // bottom-left
    Vec3 bl_0,bl_1;
    src = Vec3(0,size.height,0);
    bl_0 = _cameraFirst->unproject(src);
    src = Vec3(0,size.height,1);
    bl_1 = _cameraFirst->unproject(src);
    
    // bottom-right
    Vec3 br_0,br_1;
    src = Vec3(size.width,size.height,0);
    br_0 = _cameraFirst->unproject(src);
    src = Vec3(size.width,size.height,1);
    br_1 = _cameraFirst->unproject(src);
    
    _drawFrustum->drawLine(tl_0, tl_1, color);
    _drawFrustum->drawLine(tr_0, tr_1, color);
    _drawFrustum->drawLine(bl_0, bl_1, color);
    _drawFrustum->drawLine(br_0, br_1, color);
    
    _drawFrustum->drawLine(tl_0, tr_0, color);
    _drawFrustum->drawLine(tr_0, br_0, color);
    _drawFrustum->drawLine(br_0, bl_0, color);
    _drawFrustum->drawLine(bl_0, tl_0, color);
    
    _drawFrustum->drawLine(tl_1, tr_1, color);
    _drawFrustum->drawLine(tr_1, br_1, color);
    _drawFrustum->drawLine(br_1, bl_1, color);
    _drawFrustum->drawLine(bl_1, tl_1, color);
}

////////////////////////////////////////////////////////////
// CameraArcBallDemo
CameraArcBallDemo::CameraArcBallDemo(void)
: CameraBaseTest()
, _layer3D(nullptr)
, _cameraType(CameraType::Free)
, _camera(nullptr)
, _drawGrid(nullptr)
, _radius(1.0f)
, _distanceZ(50.0f)
, _operate(OperateCamType::RotateCamera)
, _center(Vec3(0,0,0))
, _target(0)
, _sprite3D1(nullptr)
, _sprite3D2(nullptr)
{
}
CameraArcBallDemo::~CameraArcBallDemo(void)
{
}

std::string CameraArcBallDemo::title() const
{
    return "Camera ArcBall Moving";
}

void CameraArcBallDemo::onEnter()
{
    CameraBaseTest::onEnter();
    _rotationQuat.set(0.0f, 0.0f, 0.0f, 1.0f);
    schedule(schedule_selector(CameraArcBallDemo::update), 0.0f);
    auto s = Director::getInstance()->getWinSize();
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesMoved = CC_CALLBACK_2(CameraArcBallDemo::onTouchsMoved, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    // swich camera
    MenuItemFont::setFontName("fonts/arial.ttf");
    MenuItemFont::setFontSize(20);
    
    auto menuItem1 = MenuItemFont::create("Switch Operation", CC_CALLBACK_1(CameraArcBallDemo::switchOperateCallback,this));
    menuItem1->setColor(Color3B(0,200,20));
    auto menuItem2 = MenuItemFont::create("Switch Target", CC_CALLBACK_1(CameraArcBallDemo::switchTargetCallback,this));
    menuItem2->setColor(Color3B(0,200,20));
    auto menu = Menu::create(menuItem1,menuItem2,NULL);
    menu->setPosition(Vec2::ZERO);
    menuItem1->setPosition(VisibleRect::left().x + 80, VisibleRect::top().y -70);
    menuItem2->setPosition(VisibleRect::left().x + 80, VisibleRect::top().y -100);
    addChild(menu, 1);

    auto layer3D=Layer::create();
    addChild(layer3D,0);
    _layer3D=layer3D;

    if (_camera == nullptr)
    {
        _camera=Camera::createPerspective(60, (GLfloat)s.width/s.height, 1, 1000);
        _camera->setCameraFlag(CameraFlag::USER1);
        _camera->setPosition3D(Vec3(0, 10, 50));
        _camera->lookAt(Vec3(0, 0, 0), Vec3(0, 1, 0));
        _camera->retain();
        _layer3D->addChild(_camera);
    }

    _sprite3D1 = Sprite3D::create("Sprite3DTest/orc.c3b");
    _sprite3D1->setScale(0.5);
    _sprite3D1->setRotation3D(Vec3(0,180,0));
    _sprite3D1->setPosition3D(Vec3(0,0,0));
    _layer3D->addChild(_sprite3D1);

    _sprite3D2 = Sprite3D::create("Sprite3DTest/boss.c3b");
    _sprite3D2->setScale(0.6f);
    _sprite3D2->setRotation3D(Vec3(-90,0,0));
    _sprite3D2->setPosition3D(Vec3(20,0,0));
    _layer3D->addChild(_sprite3D2);

    _drawGrid =DrawNode3D::create();

    //draw x
    for( int j =-20; j<=20 ;j++)
    {
        _drawGrid->drawLine(Vec3(-100, 0, 5*j),Vec3(100,0,5*j),Color4F(1,0,0,1));
    }
    //draw z
    for( int j =-20; j<=20 ;j++)
    {
        _drawGrid->drawLine(Vec3(5*j, 0, -100),Vec3(5*j,0,100),Color4F(0,0,1,1));
    }
    //draw y
    _drawGrid->drawLine(Vec3(0, 0, 0),Vec3(0,50,0),Color4F(0,1,0,1));
    _layer3D->addChild(_drawGrid);

    _layer3D->setCameraMask(2);

    updateCameraTransform();

}

void CameraArcBallDemo::onExit()
{
    CameraBaseTest::onExit();
    if (_camera)
    {
        _camera = nullptr;
    }
}

void CameraArcBallDemo::onTouchsMoved( const std::vector<Touch*> &touchs, Event *event )
{
    if (!touchs.empty())
    {
        if(_operate == OperateCamType::RotateCamera)           //arc ball rotate
        {
            Size visibleSize = Director::getInstance()->getVisibleSize();
            Vec2 prelocation = touchs[0]->getPreviousLocationInView();
            Vec2 location = touchs[0]->getLocationInView();
            location.x = 2.0 * (location.x) / (visibleSize.width) - 1.0f;
            location.y = 2.0 * (visibleSize.height - location.y) / (visibleSize.height) - 1.0f;
            prelocation.x = 2.0 * (prelocation.x) / (visibleSize.width) - 1.0f;
            prelocation.y = 2.0 * (visibleSize.height - prelocation.y) / (visibleSize.height) - 1.0f;

            Vec3 axes;
            float angle;
            calculateArcBall(axes, angle, prelocation.x, prelocation.y, location.x, location.y);    //calculate  rotation quaternion parameters
            Quaternion quat(axes, angle);                                                           //get rotation quaternion
            _rotationQuat = quat * _rotationQuat;

            updateCameraTransform();                                                                //update camera Transform
        }
        else if(_operate == OperateCamType::MoveCamera)         //camera zoom 
        {
            Point newPos = touchs[0]->getPreviousLocation() - touchs[0]->getLocation();
            _distanceZ -= newPos.y*0.1f;

            updateCameraTransform();
        }
    }
}

void CameraArcBallDemo::calculateArcBall( cocos2d::Vec3 & axis, float & angle, float p1x, float p1y, float p2x, float p2y )
{
    Mat4 rotation_matrix;
    Mat4::createRotation(_rotationQuat, &rotation_matrix);

    Vec3 uv = rotation_matrix * Vec3(0.0f,1.0f,0.0f); //rotation y
    Vec3 sv = rotation_matrix * Vec3(1.0f,0.0f,0.0f); //rotation x
    Vec3 lv = rotation_matrix * Vec3(0.0f,0.0f,-1.0f);//rotation z

    Vec3 p1 = sv * p1x + uv * p1y - lv * projectToSphere(_radius, p1x, p1y); //start point screen transform to 3d
    Vec3 p2 = sv * p2x + uv * p2y - lv * projectToSphere(_radius, p2x, p2y); //end point screen transform to 3d

    Vec3::cross(p2, p1, &axis);  //calculate rotation axis
    axis.normalize();

    float t = (p2 - p1).length() / (2.0 * _radius);
    //clamp -1 to 1
    if (t > 1.0) t = 1.0;
    if (t < -1.0) t = -1.0;
    angle = asin(t);           //rotation angle
}

/* project an x,y pair onto a sphere of radius r or a
hyperbolic sheet if we are away from the center of the sphere. */
float CameraArcBallDemo::projectToSphere( float r, float x, float y )
{
    float d, t, z;
    d = sqrt(x*x + y*y);
    if (d < r * 0.70710678118654752440)//inside sphere
    {
        z = sqrt(r*r - d*d);
    }                         
    else                               //on hyperbola
    {
        t = r / 1.41421356237309504880;
        z = t*t / d;
    }
    return z;
}

void CameraArcBallDemo::updateCameraTransform()
{
    Mat4 trans, rot, center;
    Mat4::createTranslation(Vec3(0.0f, 10.0f, _distanceZ), &trans);
    Mat4::createRotation(_rotationQuat, &rot);
    Mat4::createTranslation(_center, &center);
    Mat4 result = center * rot * trans;
    _camera->setNodeToParentTransform(result);

}

void CameraArcBallDemo::switchOperateCallback(Ref* sender)
{
    if(_operate == OperateCamType::MoveCamera)
    {
        _operate = OperateCamType::RotateCamera;
    }
    else if(_operate == OperateCamType::RotateCamera)
    {
        _operate = OperateCamType::MoveCamera;
    }
}

void CameraArcBallDemo::switchTargetCallback(Ref* sender)
{
    if(_target == 0)
    {
        _target = 1;
        _center = _sprite3D2->getPosition3D();
        updateCameraTransform();
    }
    else if(_target == 1)
    {
        _target = 0;
        _center = _sprite3D1->getPosition3D();
        updateCameraTransform();
    }
}

void CameraArcBallDemo::update(float dt)
{
     //updateCameraTransform();
}

////////////////////////////////////////////////////////////
// FogTestDemo
FogTestDemo::FogTestDemo(void)
: CameraBaseTest()
, _layer3D(nullptr)
, _cameraType(CameraType::Free)
, _camera(nullptr)
, _shader(nullptr)
, _state(nullptr)
{
}
FogTestDemo::~FogTestDemo(void)
{
}

std::string FogTestDemo::title() const
{
    return "Fog Test Demo";
}

void FogTestDemo::onEnter()
{
    CameraBaseTest::onEnter();
    schedule(schedule_selector(FogTestDemo::update), 0.0f);
    Director::getInstance()->setClearColor(Color4F(0.5,0.5,0.5,1));

    auto s = Director::getInstance()->getWinSize();
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesMoved = CC_CALLBACK_2(FogTestDemo::onTouchesMoved, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    // swich fog type
    TTFConfig ttfConfig("fonts/arial.ttf", 20);
    
    auto label1 = Label::createWithTTF(ttfConfig,"Linear ");
    auto menuItem1 = MenuItemLabel::create(label1, CC_CALLBACK_1(FogTestDemo::switchTypeCallback,this,0));
    auto label2 = Label::createWithTTF(ttfConfig,"Exp");
    auto menuItem2 = MenuItemLabel::create(label2, CC_CALLBACK_1(FogTestDemo::switchTypeCallback,this,1));
    auto label3 = Label::createWithTTF(ttfConfig,"Exp2");
    auto menuItem3 = MenuItemLabel::create(label3, CC_CALLBACK_1(FogTestDemo::switchTypeCallback,this,2));
    auto menu = Menu::create(menuItem1, menuItem2, menuItem3, nullptr);
    
    menu->setPosition(Vec2::ZERO);
    
    menuItem1->setPosition(VisibleRect::left().x+60, VisibleRect::top().y-50);
    menuItem2->setPosition(VisibleRect::left().x+60, VisibleRect::top().y -100);
    menuItem3->setPosition(VisibleRect::left().x+60, VisibleRect::top().y -150);
    addChild(menu, 0);


    auto layer3D=Layer::create();
    addChild(layer3D,0);
    _layer3D=layer3D;

    _shader =GLProgram::createWithFilenames("Sprite3DTest/fog.vert","Sprite3DTest/fog.frag");
    _state = GLProgramState::create(_shader);

    _sprite3D1 = Sprite3D::create("Sprite3DTest/teapot.c3b");
    _sprite3D2 = Sprite3D::create("Sprite3DTest/teapot.c3b");

    _sprite3D1->setGLProgramState(_state);
    _sprite3D2->setGLProgramState(_state);
    //pass mesh's attribute to shader
    long offset = 0; 
    auto attributeCount = _sprite3D1->getMesh()->getMeshVertexAttribCount();
    for (auto i = 0; i < attributeCount; i++) {
        auto meshattribute = _sprite3D1->getMesh()->getMeshVertexAttribute(i);
        _state->setVertexAttribPointer(s_attributeNames[meshattribute.vertexAttrib],
            meshattribute.size, 
            meshattribute.type,
            GL_FALSE,
            _sprite3D1->getMesh()->getVertexSizeInBytes(),
            (GLvoid*)offset);
        offset += meshattribute.attribSizeBytes;
    }

    long offset1 = 0; 
    auto attributeCount1 = _sprite3D2->getMesh()->getMeshVertexAttribCount();
    for (auto i = 0; i < attributeCount1; i++) {
        auto meshattribute = _sprite3D2->getMesh()->getMeshVertexAttribute(i);
        _state->setVertexAttribPointer(s_attributeNames[meshattribute.vertexAttrib],
            meshattribute.size, 
            meshattribute.type,
            GL_FALSE,
            _sprite3D2->getMesh()->getVertexSizeInBytes(),
            (GLvoid*)offset1);
        offset1 += meshattribute.attribSizeBytes;
    }

    _state->setUniformVec4("u_fogColor", Vec4(0.5,0.5,0.5,1.0));
    _state->setUniformFloat("u_fogStart",10);
    _state->setUniformFloat("u_fogEnd",60);
    _state->setUniformInt("u_fogEquation" ,0);

    _layer3D->addChild(_sprite3D1);
    _sprite3D1->setPosition3D( Vec3( 0, 0,0 ) );
    _sprite3D1->setScale(2.0f);
    _sprite3D1->setRotation3D(Vec3(-90,180,0));

    _layer3D->addChild(_sprite3D2);
    _sprite3D2->setPosition3D( Vec3( 0, 0,-20 ) );
    _sprite3D2->setScale(2.0f);
    _sprite3D2->setRotation3D(Vec3(-90,180,0));

    if (_camera == nullptr)
    {
        _camera=Camera::createPerspective(60, (GLfloat)s.width/s.height, 1, 1000);
        _camera->setCameraFlag(CameraFlag::USER1);
        _camera->setPosition3D(Vec3(0, 30, 40));
        _camera->lookAt(Vec3(0,0,0), Vec3(0, 1, 0));

        _layer3D->addChild(_camera);
    }
    _layer3D->setCameraMask(2);


#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID || CC_TARGET_PLATFORM == CC_PLATFORM_WP8 || CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
    _backToForegroundListener = EventListenerCustom::create(EVENT_RENDERER_RECREATED,
                                                            [this](EventCustom*)
                                                            {
                                                                Director::getInstance()->setClearColor(Color4F(0.5,0.5,0.5,1));
                                                                auto glProgram = _state->getGLProgram();
                                                                glProgram->reset();
                                                                glProgram->initWithFilenames("Sprite3DTest/fog.vert","Sprite3DTest/fog.frag");
                                                                glProgram->link();
                                                                glProgram->updateUniforms();
                                                                
                                                                _state->setUniformVec4("u_fogColor", Vec4(0.5,0.5,0.5,1.0));
                                                                _state->setUniformFloat("u_fogStart",10);
                                                                _state->setUniformFloat("u_fogEnd",60);
                                                                _state->setUniformInt("u_fogEquation" ,0);
                                                            }
                                                            );
    Director::getInstance()->getEventDispatcher()->addEventListenerWithFixedPriority(_backToForegroundListener, -1);
#endif

}

void FogTestDemo::switchTypeCallback(Ref* sender,int type)
{
    if(type == 0)
    {
        _state->setUniformVec4("u_fogColor", Vec4(0.5,0.5,0.5,1.0));
        _state->setUniformFloat("u_fogStart",10);
        _state->setUniformFloat("u_fogEnd",60);
        _state->setUniformInt("u_fogEquation" ,0);

        _sprite3D1->setGLProgramState(_state);
        _sprite3D2->setGLProgramState(_state);
    }
    else if(type == 1)
    {
        _state->setUniformVec4("u_fogColor", Vec4(0.5,0.5,0.5,1.0));
        _state->setUniformFloat("u_fogDensity",0.03f);
        _state->setUniformInt("u_fogEquation" ,1);

        _sprite3D1->setGLProgramState(_state);
        _sprite3D2->setGLProgramState(_state);
    }
    else if(type == 2)
    {
        _state->setUniformVec4("u_fogColor", Vec4(0.5,0.5,0.5,1.0));
        _state->setUniformFloat("u_fogDensity",0.03f);
        _state->setUniformInt("u_fogEquation" ,2);

        _sprite3D1->setGLProgramState(_state);
        _sprite3D2->setGLProgramState(_state);
    }
}

void FogTestDemo::onExit()
{
    CameraBaseTest::onExit();
    Director::getInstance()->setClearColor(Color4F(0,0,0,1));
    if (_camera)
    {
        _camera = nullptr;
    }

#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID || CC_TARGET_PLATFORM == CC_PLATFORM_WP8 || CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
    Director::getInstance()->getEventDispatcher()->removeEventListener(_backToForegroundListener);
#endif
}

void FogTestDemo::update(float dt)
{
}

void FogTestDemo::onTouchesMoved(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    if(touches.size()==1)
    {
        Vec2 prelocation = touches[0]->getPreviousLocationInView();
        Vec2 location = touches[0]->getLocationInView();
        Vec2 newPos = prelocation - location;
        if(_cameraType==CameraType::Free)
        {
            Vec3 cameraDir;
            Vec3 cameraRightDir;
            _camera->getNodeToWorldTransform().getForwardVector(&cameraDir);
            cameraDir.normalize();
            cameraDir.y=0;
            _camera->getNodeToWorldTransform().getRightVector(&cameraRightDir);
            cameraRightDir.normalize();
            cameraRightDir.y=0;
            Vec3 cameraPos=  _camera->getPosition3D();
            cameraPos-=cameraDir*newPos.y*0.1f;
            cameraPos+=cameraRightDir*newPos.x*0.1f;
            _camera->setPosition3D(cameraPos);
        }
    }
}