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

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

http://www.cocos2d-x.org

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

enum
{
    IDC_NEXT = 100,
    IDC_BACK,
    IDC_RESTART
};

static int sceneIdx = -1;

static std::function<Layer*()> createFunctions[] =
{
    CL(Camera3DTestDemo),
    CL(CameraClippingDemo)
};
#define MAX_LAYER    (sizeof(createFunctions) / sizeof(createFunctions[0]))

static Layer* nextSpriteTestAction()
{
    sceneIdx++;
    sceneIdx = sceneIdx % MAX_LAYER;
    auto layer = (createFunctions[sceneIdx])();
    return layer;
}

static Layer* backSpriteTestAction()
{
    sceneIdx--;
    int total = MAX_LAYER;
    if( sceneIdx < 0 )
        sceneIdx += total;
    
    auto layer = (createFunctions[sceneIdx])();
    return layer;
}

static Layer* restartSpriteTestAction()
{
    auto layer = (createFunctions[sceneIdx])();
    return layer;
}

//------------------------------------------------------------------
//
// SpriteTestDemo
//
//------------------------------------------------------------------

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

std::string Camera3DTestDemo::subtitle() const
{
    return "";
}
void Camera3DTestDemo::scaleCameraCallback(Ref* sender,float value)
{
    if(_camera&& _cameraType!=CameraType::FirstCamera)
    {
        Vec3 cameraPos=  _camera->getPosition3D();
        cameraPos+= cameraPos.getNormalized()*value;
        _camera->setPosition3D(cameraPos);
    }
}
void Camera3DTestDemo::rotateCameraCallback(Ref* sender,float value)
{
    if(_cameraType==CameraType::FreeCamera || _cameraType==CameraType::FirstCamera)
    {
        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::FreeCamera)
    {
        _camera->setPosition3D(Vec3(0, 130, 130) + _sprite3D->getPosition3D());
        _camera->lookAt(_sprite3D->getPosition3D(), Vec3(0,1,0));
        
        _RotateRightlabel->setColor(Color3B::WHITE);
        _RotateLeftlabel->setColor(Color3B::WHITE);
        _ZoomInlabel->setColor(Color3B::WHITE);
        _ZoomOutlabel->setColor(Color3B::WHITE);
    }
    else if(_cameraType==CameraType::FirstCamera)
    {
        Vec3 newFaceDir;
        _sprite3D->getWorldToNodeTransform().getForwardVector(&newFaceDir);
        newFaceDir.normalize();
        _camera->setPosition3D(Vec3(0,35,0) + _sprite3D->getPosition3D());
        _camera->lookAt(_sprite3D->getPosition3D() + newFaceDir*50, Vec3(0, 1, 0));
        
        _RotateRightlabel->setColor(Color3B::WHITE);
        _RotateLeftlabel->setColor(Color3B::WHITE);
        _ZoomInlabel->setColor(Color3B::GRAY);
        _ZoomOutlabel->setColor(Color3B::GRAY);
    }
    else if(_cameraType==CameraType::ThirdCamera)
    {
        _camera->setPosition3D(Vec3(0, 130, 130) + _sprite3D->getPosition3D());
        _camera->lookAt(_sprite3D->getPosition3D(), Vec3(0,1,0));
        
        _RotateRightlabel->setColor(Color3B::GRAY);
        _RotateLeftlabel->setColor(Color3B::GRAY);
        _ZoomInlabel->setColor(Color3B::WHITE);
        _ZoomOutlabel->setColor(Color3B::WHITE);
    }
}
void Camera3DTestDemo::onEnter()
{
    BaseTest::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::FreeCamera));
    auto label2 = Label::createWithTTF(ttfConfig,"third person");
    auto menuItem2 = MenuItemLabel::create(label2, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::ThirdCamera));
    auto label3 = Label::createWithTTF(ttfConfig,"first person");
    auto menuItem3 = MenuItemLabel::create(label3, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::FirstCamera));
    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::ThirdCamera);
    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()
{
    BaseTest::onExit();
    if (_camera)
    {
        _camera = nullptr;
    }
}

void Camera3DTestDemo::restartCallback(Ref* sender)
{
    auto s = new (std::nothrow) Camera3DTestScene();
    s->addChild(restartSpriteTestAction());
    
    Director::getInstance()->replaceScene(s);
    s->release();
}

void Camera3DTestDemo::nextCallback(Ref* sender)
{
    auto s = new (std::nothrow) Camera3DTestScene();
    s->addChild( nextSpriteTestAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}
void Camera3DTestDemo::backCallback(Ref* sender)
{
    auto s = new (std::nothrow) Camera3DTestScene();
    s->addChild( backSpriteTestAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}
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::FreeCamera || _cameraType==CameraType::FirstCamera)
        {
            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::FirstCamera)
            {
                _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::ThirdCamera)
        {
            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::ThirdCamera && _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();
                _camera->unproject(size, &nearP, &nearP);
                _camera->unproject(size, &farP, &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::ThirdCamera)
        {
            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::ThirdCamera)
                {
                    Vec3 lookDir = _camera->getPosition3D() - _sprite3D->getPosition3D();
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(lookDir.length() <= 300)
                    {
                        cameraPos += lookDir.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
                else if(_cameraType == CameraType::FreeCamera)
                {
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(cameraPos.length() <= 300)
                    {
                        cameraPos += cameraPos.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
            }
        }
        if(_bZoomIn == true)
        {
            if(_camera)
            {
                if(_cameraType == CameraType::ThirdCamera)
                {
                    Vec3 lookDir = _camera->getPosition3D() - _sprite3D->getPosition3D();
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(lookDir.length() >= 50)
                    {
                        cameraPos -= lookDir.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
                else if(_cameraType == CameraType::FreeCamera)
                {
                    Vec3 cameraPos = _camera->getPosition3D();
                    if(cameraPos.length() >= 50)
                    {
                        cameraPos -= cameraPos.getNormalized();
                        _camera->setPosition3D(cameraPos);
                    }
                }
            }
        }
        if(_bRotateLeft == true)
        {
            if(_cameraType==CameraType::FreeCamera || _cameraType==CameraType::FirstCamera)
            {
                Vec3  rotation3D= _camera->getRotation3D();
                rotation3D.y+= 1;
                _camera->setRotation3D(rotation3D);
            }
        }
        if(_bRotateRight == true)
        {
            if(_cameraType==CameraType::FreeCamera || _cameraType==CameraType::FirstCamera)
            {
                Vec3  rotation3D= _camera->getRotation3D();
                rotation3D.y-= 1;
                _camera->setRotation3D(rotation3D);
            }
        }
    }
}
bool Camera3DTestDemo::isState(unsigned int state,unsigned int bit) const
{
    return (state & bit) == bit;
}
bool Camera3DTestDemo::onTouchesZoomOut(Touch* touch, Event* event)
{
    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))
    {
        _bZoomOut = true;
        return true;
    }
    return false;
}
void Camera3DTestDemo::onTouchesZoomOutEnd(Touch* touch, Event* event)
{
    _bZoomOut = false;
}
bool Camera3DTestDemo::onTouchesZoomIn(Touch* touch, Event* event)
{
    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))
    {
        _bZoomIn = true;
        return true;
    }
    return false;
}
void Camera3DTestDemo::onTouchesZoomInEnd(Touch* touch, Event* event)
{
    _bZoomIn = false;
}
bool Camera3DTestDemo::onTouchesRotateLeft(Touch* touch, Event* event)
{
    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))
    {
        _bRotateLeft = true;
        return true;
    }
    return false;
}
void Camera3DTestDemo::onTouchesRotateLeftEnd(Touch* touch, Event* event)
{
    _bRotateLeft = false;
}
bool Camera3DTestDemo::onTouchesRotateRight(Touch* touch, Event* event)
{
    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))
    {
        _bRotateRight = true;
        return true;
    }
    return false;
}
void Camera3DTestDemo::onTouchesRotateRightEnd(Touch* touch, Event* event)
{
    _bRotateRight = false;
}

////////////////////////////////////////////////////////////
// CameraClippingDemo
CameraClippingDemo::CameraClippingDemo(void)
: BaseTest()
, _layer3D(nullptr)
, _cameraType(CameraType::FirstCamera)
, _cameraFirst(nullptr)
, _cameraThird(nullptr)
, _moveAction(nullptr)
, _drawAABB(nullptr)
, _drawFrustum(nullptr)
, _row(0)
{
}
CameraClippingDemo::~CameraClippingDemo(void)
{
}

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

void CameraClippingDemo::restartCallback(Ref* sender)
{
    auto s = new (std::nothrow) Camera3DTestScene();
    s->addChild(restartSpriteTestAction());
    
    Director::getInstance()->replaceScene(s);
    s->release();
}

void CameraClippingDemo::nextCallback(Ref* sender)
{
    auto s = new (std::nothrow) Camera3DTestScene();
    s->addChild( nextSpriteTestAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}

void CameraClippingDemo::backCallback(Ref* sender)
{
    auto s = new (std::nothrow) Camera3DTestScene();
    s->addChild( backSpriteTestAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}

void CameraClippingDemo::onEnter()
{
    BaseTest::onEnter();
    schedule(schedule_selector(CameraClippingDemo::update), 0.0f);
    
    auto s = Director::getInstance()->getWinSize();
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesBegan = CC_CALLBACK_2(CameraClippingDemo::onTouchesBegan, this);
    listener->onTouchesMoved = CC_CALLBACK_2(CameraClippingDemo::onTouchesMoved, this);
    listener->onTouchesEnded = CC_CALLBACK_2(CameraClippingDemo::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(CameraClippingDemo::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(CameraClippingDemo::delSpriteCallback, this));
    decrease->setColor(Color3B(0,200,20));
    auto increase = MenuItemFont::create(" + ", CC_CALLBACK_1(CameraClippingDemo::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 CameraClippingDemo::onExit()
{
    BaseTest::onExit();
    if (_cameraFirst)
    {
        _cameraFirst = nullptr;
    }
    if (_cameraThird)
    {
        _cameraThird = nullptr;
    }
}

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

void CameraClippingDemo::reachEndCallBack()
{
    _cameraFirst->stopActionByTag(100);
    auto inverse = (MoveTo*)_moveAction->reverse();
    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(CameraClippingDemo::reachEndCallBack, this)), nullptr);
    seq->setTag(100);
    _cameraFirst->runAction(seq);
}

void CameraClippingDemo::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), Vec3(0, 1, 0));
        _moveAction = MoveTo::create(4.f, Vec2(100, 0));
        _moveAction->retain();
        auto seq = Sequence::create(_moveAction, CallFunc::create(CC_CALLBACK_0(CameraClippingDemo::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), Vec3(0, 1, 0));
        addChild(_cameraThird);
    }
    
    if(_cameraType == CameraType::FirstCamera)
    {
        _cameraType = CameraType::ThirdCamera;
        _cameraThird->setCameraFlag(CameraFlag::USER1);
        _cameraThird->enableFrustumCull(false, false);
        _cameraFirst->setCameraFlag(CameraFlag::USER8);
    }
    else if(_cameraType == CameraType::ThirdCamera)
    {
        _cameraType = CameraType::FirstCamera;
        _cameraFirst->setCameraFlag(CameraFlag::USER1);
        _cameraFirst->enableFrustumCull(true, true);
        _cameraThird->setCameraFlag(CameraFlag::USER8);
        _drawFrustum->clear();
    }
}

void CameraClippingDemo::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 CameraClippingDemo::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 CameraClippingDemo::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);
    _cameraFirst->unproject(size, &src, &tl_0);
    src = Vec3(0,0,1);
    _cameraFirst->unproject(size, &src, &tl_1);
    
    // top-right
    Vec3 tr_0,tr_1;
    src = Vec3(size.width,0,0);
    _cameraFirst->unproject(size, &src, &tr_0);
    src = Vec3(size.width,0,1);
    _cameraFirst->unproject(size, &src, &tr_1);
    
    // bottom-left
    Vec3 bl_0,bl_1;
    src = Vec3(0,size.height,0);
    _cameraFirst->unproject(size, &src, &bl_0);
    src = Vec3(0,size.height,1);
    _cameraFirst->unproject(size, &src, &bl_1);
    
    // bottom-right
    Vec3 br_0,br_1;
    src = Vec3(size.width,size.height,0);
    _cameraFirst->unproject(size, &src, &br_0);
    src = Vec3(size.width,size.height,1);
    _cameraFirst->unproject(size, &src, &br_1);
    
    _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);
}

void Camera3DTestScene::runThisTest()
{
    auto layer = nextSpriteTestAction();
    addChild(layer);
    Director::getInstance()->replaceScene(this);
}