Cocos2d-x3.1TestCpp之NewRenderTest Demo分析

1、代码构成

VisibleRect.h
VisibleRect.cpp
AppDelegate.h
AppDelegate.cpp
HelloWorldScene.h
HelloWorldScene.cpp
NewRenderTest.h
NewRenderTest.cpp

2、HelloWorld代码

#include "cocos2d.h"
#include "ui/CocosGUI.h"
USING_NS_CC;
using namespace ui;

class HelloWorld : public cocos2d::Layer
{
public:
// there's no 'id' in cpp, so we recommend returning the class instance pointer
static cocos2d::Scene* createScene();

// Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
virtual bool init();

// a selector callback
void menuCloseCallback(cocos2d::Ref* pSender);
void touchEvent(Ref *pSender, cocos2d::ui::Widget::TouchEventType type);

// implement the "static create()" method manually
CREATE_FUNC(HelloWorld);
};

#include "HelloWorldScene.h"
#include "NewRenderTest.h"
USING_NS_CC;

Scene* HelloWorld::createScene()
{
// 'scene' is an autorelease object
auto scene = Scene::create();

// 'layer' is an autorelease object
auto layer = HelloWorld::create();

// add layer as a child to scene
scene->addChild(layer);

// return the scene
return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !Layer::init() )
{
return false;
}

Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();

/////////////////////////////
// 2. add a menu item with "X" image, which is clicked to quit the program
//    you may modify it.

// add a "close" icon to exit the progress. it's an autorelease object
auto closeItem = MenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));

closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
origin.y + closeItem->getContentSize().height/2));

// create menu, it's an autorelease object
auto menu = Menu::create(closeItem, NULL);
menu->setPosition(Vec2::ZERO);
this->addChild(menu, 1);

auto text = Text::create();
text->setString("click");
text->setFontSize(40);
text->setPosition(Vec2(200,200));
addChild(text);
text->addTouchEventListener(CC_CALLBACK_2(HelloWorld::touchEvent, this));

return true;
}

void HelloWorld::touchEvent(cocos2d::Ref *pSender, cocos2d::ui::Widget::TouchEventType type)
{
switch (type) {
case cocos2d::ui::Widget::TouchEventType::ENDED:
{
auto temp = NewRendererDemo::create();
Director::getInstance()->replaceScene(temp);
break;
}
default:
break;
}
}

void HelloWorld::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
return;
#endif

Director::getInstance()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
exit(0);
#endif
}

3、NewRendererTest代码

#include "cocos2d.h"
#include "ui/CocosGUI.h"
#include "VisibleRect.h"
#include "../cocos2d/cocos/renderer/CCRenderer.h"
USING_NS_CC;
using namespace ui;
//宏定义，用于NewClippingNodeTest
#define kTagSpriteBatchNode 100
#define kTagClipperNode 101
#define kTagContentNode 102
//父类Scene，首先运行HelloWorld中的Scene，然后该Scene类replace HelloWorld使用的Scene
class NewRendererDemo : public Scene
{
public:
CREATE_FUNC(NewRendererDemo);
virtual bool init();
};
//父类Layer，该Layer加载NewRenderDemo所创建的Scene上
class BaseTest : public cocos2d::Layer
{
public:
CREATE_FUNC(BaseTest);
virtual std::string title() const;//标题
virtual std::string subtitle() const;//副标题

virtual void restartCallback(Ref* sender);//重新执行当前test
virtual void nextCallback(Ref* sender);//下一个test
virtual void backCallback(Ref* sender);//上一个test

virtual bool init();
void menuCloseCallback(cocos2d::Ref* pSender);//关闭菜单回调函数
};
//基类Layer，所有测试Demo均继承自该类，而该类继承自BaseTest，BaseTest继承自Layer
class MultiSceneTest : public BaseTest
{
public:
CREATE_FUNC(MultiSceneTest);
virtual std::string title() const;
virtual std::string subtitle() const;

virtual void restartCallback(Ref* sender);
virtual void nextCallback(Ref* sender);
virtual void backCallback(Ref* sender);
};
//第一个测试
class NewSpriteTest : public MultiSceneTest
{
public:
CREATE_FUNC(NewSpriteTest);
virtual std::string title() const;
virtual std::string subtitle() const;
virtual bool init();
void createSpriteTest();
void createNewSpriteTest();
void onTouchesEnded(const std::vector<Touch*>& touches,Event* event);
};
//第二个测试
class GroupCommandTest : public MultiSceneTest
{
public:
CREATE_FUNC(GroupCommandTest);
virtual bool init();
virtual std::string title() const override;
virtual std::string subtitle() const override;
};
//第三个测试
class NewSpriteBatchTest : public MultiSceneTest
{
public:
CREATE_FUNC(NewSpriteBatchTest);
virtual bool init();
virtual std::string title() const override;
virtual std::string subtitle() const override;

void onTouchesEnded(const std::vector<Touch*>& touches,Event* event);
void addNewSpriteWithCoords(Vec2 p);
};
//第四个测试
class NewClippingNodeTest : public MultiSceneTest
{
public:
CREATE_FUNC(NewClippingNodeTest);
virtual bool init();
virtual std::string title() const override;
virtual std::string subtitle() const override;

void onTouchesBegan(const std::vector<Touch*>& touches,Event* event);
void onTouchesMoved(const std::vector<Touch*>& touches,Event* event);
void onTouchesEnded(const std::vector<Touch*>& touches,Event* event);

protected:
bool _scrolling;
Vec2 _lastPoint;
};

//第五个测试
class NewDrawNodeTest : public MultiSceneTest
{
public:
CREATE_FUNC(NewDrawNodeTest);
virtual bool init();
virtual std::string title() const override;
virtual std::string subtitle() const override;
};
//第六个测试
class NewCullingTest : public MultiSceneTest
{
public:
CREATE_FUNC(NewCullingTest);
virtual std::string title() const override;
virtual std::string subtitle() const override;
virtual bool init();
protected:
bool onTouchBegan(Touch*,Event* event);
void onTouchMoved(Touch* touch,Event* event);
Vec2 _lastPos;
};
//第七个测试
class VBOFullTest : public MultiSceneTest
{
public:
CREATE_FUNC(VBOFullTest);
virtual bool init();
virtual std::string title() const override;
virtual std::string subtitle() const override;
};

#include "NewRenderTest.h"
#include "HelloWorldScene.h"
//宏定义，实现类的创建
#define CL(__className__) [](){ return __className__::create();}
#define CLN(__className__) [](){ auto obj = new __className__(); obj->autorelease(); return obj; }
//基类Layer。实现关闭按钮、下一个测试、当前测试、下一个测试菜单项的布局与事件响应
bool BaseTest::init()
{
bool bRet = true;
do{
CC_BREAK_IF(!Layer::init());

Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();

/////////////////////////////
// 2. add a menu item with "X" image, which is clicked to quit the program
//    you may modify it.

// add a "close" icon to exit the progress. it's an autorelease object
auto closeItem = MenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
CC_CALLBACK_1(BaseTest::menuCloseCallback, this));
closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
origin.y + visibleSize.height - closeItem->getContentSize().height/2));

// create menu, it's an autorelease object
auto menu1 = Menu::create(closeItem, NULL);
menu1->setPosition(Vec2::ZERO);
this->addChild(menu1, 1);

std::string str = title();
const char * pTitle = str.c_str();
TTFConfig ttfConfig("tahoma.ttf", 35);
auto label = Label::createWithTTF(ttfConfig,pTitle);
addChild(label, 9999);
label->setPosition( Vec2(VisibleRect::center().x, VisibleRect::top().y - 30) );

std::string strSubtitle = subtitle();
if( ! strSubtitle.empty() )
{
ttfConfig.fontFilePath = "tahoma.ttf";
ttfConfig.fontSize = 30;
auto l = Label::createWithTTF(ttfConfig,strSubtitle.c_str());
addChild(l, 9999);
l->setPosition( Vec2(VisibleRect::center().x, VisibleRect::top().y - 100) );
}

auto item1 = MenuItemFont::create("backCallback", CC_CALLBACK_1(BaseTest::backCallback, this) );
auto item2 = MenuItemFont::create("restartCallback", CC_CALLBACK_1(BaseTest::restartCallback, this) );
auto item3 = MenuItemFont::create("nextCallback", CC_CALLBACK_1(BaseTest::nextCallback, this) );

auto menu = Menu::create(item1, item2, item3, NULL);

menu->setPosition(Vec2::ZERO);
item1->setPosition(Vec2(VisibleRect::center().x - item2->getContentSize().width*2, VisibleRect::bottom().y+item2->getContentSize().height/2));
item2->setPosition(Vec2(VisibleRect::center().x, VisibleRect::bottom().y+item2->getContentSize().height/2));
item3->setPosition(Vec2(VisibleRect::center().x + item2->getContentSize().width*2, VisibleRect::bottom().y+item2->getContentSize().height/2));

addChild(menu, 9999);

bRet = true;
}while(0);
return bRet;
}

void BaseTest::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
return;
#endif

Director::getInstance()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
exit(0);
#endif
}
//标题
std::string BaseTest::title() const
{
return "";
}
//副标题
std::string BaseTest::subtitle() const
{
return "";
}
//重新执行当前test
void BaseTest::restartCallback(Ref* sender)
{
log("override restart!");
}
//下一个test
void BaseTest::nextCallback(Ref* sender)
{
log("override next!");
}
//上一个test
void BaseTest::backCallback(Ref* sender)
{
log("override back!");
}
//索引，用于判断上一个或下一个
static int sceneIdx = -1;
//Layer* nextSpriteTestAction();//下一个
//Layer* backSpriteTestAction();//上一个
//Layer* restartSpriteTestAction();//当前
//函数指针数组
static std::function<Layer*()> createFunctions[] =
{
CL(NewSpriteTest),
CL(NewSpriteBatchTest),
CL(GroupCommandTest),
CL(NewClippingNodeTest),
CL(NewDrawNodeTest),
CL(NewCullingTest),
CL(VBOFullTest),
};
//获取数组的大小
#define MAX_LAYER (sizeof(createFunctions) / sizeof(createFunctions[0]))
//下一个
Layer* nextTest()
{
sceneIdx++;
sceneIdx = sceneIdx % MAX_LAYER;//循环判定
auto layer = (createFunctions[sceneIdx])();//调用函数指针数组中sceneIdx的函数
//    layer->autorelease();
return layer;
}
//同上
Layer* prevTest()
{
sceneIdx--;
int total = MAX_LAYER;
if(sceneIdx < 0)
{
sceneIdx += total;
}
auto layer = (createFunctions[sceneIdx])();
//    layer->autorelease();
return layer;
}
//同上
Layer* restartTest()
{
auto layer = (createFunctions[sceneIdx])();
//    layer->autorelease();
return layer;
}
//基类Scene，各DemoTest的Layer的容器，每个DemoTest分别使用一个Scene
bool NewRendererDemo::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!Scene::init());

auto layer = nextTest();//首先执行第一个test
addChild(layer);

bRet = true;
}while(0);
return bRet;
}
//基类Layer
std::string MultiSceneTest::title() const
{
return "New Renderer";
}

std::string MultiSceneTest::subtitle() const
{
return "MultiSceneTest";
}
//事件回调
void MultiSceneTest::restartCallback(cocos2d::Ref *sender)
{
auto s = new NewRendererDemo();//首先创建一个Scene，然后将当前的test
s->addChild(restartTest());//Layer加载到当前Scene
Director::getInstance()->replaceScene(s);//场景切换，第一个场景切换的是HelloWorld中创建的Scene
s->release();
}
//事件回调，原理同上
void MultiSceneTest::nextCallback(cocos2d::Ref *sender)
{
auto s = new NewRendererDemo();
s->addChild(nextTest());
Director::getInstance()->replaceScene(s);
s->release();
}
//事件回调，原理同上
void MultiSceneTest::backCallback(cocos2d::Ref *sender)
{
auto s = new NewRendererDemo();
s->addChild(prevTest());
Director::getInstance()->replaceScene(s);
s->release();
}
//第一个test
bool NewSpriteTest::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!MultiSceneTest::init());

log("MAX_LAYER = %lu",MAX_LAYER);
auto touchListener = EventListenerTouchAllAtOnce::create();//事件监听
touchListener->onTouchesEnded = CC_CALLBACK_2(NewSpriteTest::onTouchesEnded,this);
createSpriteTest();
createNewSpriteTest();

bRet = true;
}while(0);
return bRet;
}

void NewSpriteTest::createSpriteTest()
{
auto winSize = Director::getInstance()->getWinSize();

Sprite* parent = Sprite::create("grossini.png");
parent->setPosition(winSize.width/4,winSize.height/2);
Sprite* child1 = Sprite::create("grossinis_sister1.png");
child1->setPosition(0.0f,-20.0f);
Sprite* child2 = Sprite::create("grossinis_sister2.png");
child2->setPosition(20.0f,-20.0f);
Sprite* child3 = Sprite::create("grossinis_sister1.png");
child3->setPosition(40.0f,-20.0f);
Sprite* child4 = Sprite::create("grossinis_sister2.png");
child4->setPosition(60.0f,-20.0f);
Sprite* child5 = Sprite::create("grossinis_sister2.png");
child5->setPosition(80.0f,-20.0f);
Sprite* child6 = Sprite::create("grossinis_sister2.png");
child6->setPosition(100.0f,-20.0f);
Sprite* child7 = Sprite::create("grossinis_sister2.png");
child7->setPosition(120.0f,-20.0f);
Sprite* child8 = Sprite::create("grossinis_sister2.png");
child8->setPosition(140.0f,-20.0f);

parent->addChild(child1);
parent->addChild(child2);
parent->addChild(child3);
parent->addChild(child4);
parent->addChild(child5);
parent->addChild(child6);
parent->addChild(child7);
parent->addChild(child8);
addChild(parent);
}

void NewSpriteTest::createNewSpriteTest()
{
auto winSize = Director::getInstance()->getWinSize();

Sprite* parent = Sprite::create("grossini.png");
parent->setPosition(winSize.width*2/3, winSize.height/2);

Sprite* child1 = Sprite::create("grossinis_sister1.png");
child1->setPosition(0.0f,-20.0f);
Sprite* child2 = Sprite::create("grossinis_sister2.png");
child2->setPosition(20.0f,-20.0f);
Sprite* child3 = Sprite::create("grossinis_sister1.png");
child3->setPosition(40.0f,-20.0f);
Sprite* child4 = Sprite::create("grossinis_sister2.png");
child4->setPosition(60.0f,-20.0f);
Sprite* child5 = Sprite::create("grossinis_sister2.png");
child5->setPosition(80.0f,-20.0f);
Sprite* child6 = Sprite::create("grossinis_sister2.png");
child6->setPosition(100.0f,-20.0f);
Sprite* child7 = Sprite::create("grossinis_sister2.png");
child7->setPosition(120.0f,-20.0f);
Sprite* child8 = Sprite::create("grossinis_sister2.png");
child8->setPosition(140.0f,-20.0f);

parent->addChild(child1);
parent->addChild(child2);
parent->addChild(child3);
parent->addChild(child4);
parent->addChild(child5);
parent->addChild(child6);
parent->addChild(child7);
parent->addChild(child8);
addChild(parent);
}

void NewSpriteTest::onTouchesEnded(const std::vector<Touch *> &touches, cocos2d::Event *event)
{

}

std::string NewSpriteTest::title() const
{
return "Renderer";
}

std::string NewSpriteTest::subtitle() const
{
return "SpriteTest";
}
//工具类，通过finename创建Sprite对象
class SpriteInGroupCommand : public Sprite
{
protected:
GroupCommand _spriteWrapperCommand;
public:
static SpriteInGroupCommand* create(const std::string filename);//创建函数
virtual void draw(Renderer* renderer,const Mat4 &transform,bool transformUpdated) override;
};

SpriteInGroupCommand* SpriteInGroupCommand::create(const std::string filename)
{
SpriteInGroupCommand* sprite = new SpriteInGroupCommand();
sprite->initWithFile(filename);
sprite->autorelease();
return sprite;
}
void SpriteInGroupCommand::draw(cocos2d::Renderer *renderer, const cocos2d::Mat4 &transform, bool transformUpdated)
{
CCASSERT(renderer, "Renderer is null");
_spriteWrapperCommand.init(_globalZOrder);
renderer->addCommand(&_spriteWrapperCommand);
renderer->pushGroup(_spriteWrapperCommand.getRenderQueueID());
Sprite::draw(renderer, transform, transformUpdated);
renderer->popGroup();
}
//第二个test
bool GroupCommandTest::GroupCommandTest::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!MultiSceneTest::init());

auto sprite = SpriteInGroupCommand::create("grossini.png");//使用工具类创建对象
Size winSize = Director::getInstance()->getWinSize();
sprite->setPosition(Vec2(winSize.width/2,winSize.height/2));
addChild(sprite);
bRet = true;
}while(0);
return bRet;
}
std::string GroupCommandTest::title() const
{
return "Renderer";
}
std::string GroupCommandTest::subtitle() const
{
return "GroupCommandTest: You should see a sprite";
}
//第三个test
bool NewSpriteBatchTest::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!MultiSceneTest::init());
//事件监听
auto touchListener = EventListenerTouchAllAtOnce::create();
touchListener->onTouchesEnded = CC_CALLBACK_2(NewSpriteBatchTest::onTouchesEnded,this);
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(touchListener, this);//添加到事件分发器
auto batchNode = SpriteBatchNode::create("grossini_dance_atlas.png");//使用SpriteBatchNode创建对象
addChild(batchNode,0,kTagSpriteBatchNode);
bRet = true;
}while(0);
return bRet;
}

std::string NewSpriteBatchTest::title() const
{
return "Renderer";
}
std::string NewSpriteBatchTest::subtitle() const
{
return "SpriteBatchTest";
}
void NewSpriteBatchTest::onTouchesEnded(const std::vector<Touch *> &touches, cocos2d::Event *event)
{
for(auto &touch : touches)
{
auto location = touch->getLocation();
addNewSpriteWithCoords(location);
}
}

void NewSpriteBatchTest::addNewSpriteWithCoords(cocos2d::Vec2 p)
{
auto batchNode = static_cast<SpriteBatchNode*>(getChildByTag(kTagSpriteBatchNode));

int idx = (int)(CCRANDOM_0_1() * 1400 / 100);
log("idx = %d",idx);
int x = (idx%5)*85;
int y = (idx%5)*121;

auto sprite = Sprite::createWithTexture(batchNode->getTexture(),Rect(x,y,85,121));//随机获取资源文件中的Sprite对象
batchNode->addChild(sprite);
sprite->setPosition(Vec2(p.x,p.y));
//随机执行动作
ActionInterval* action;
float random = CCRANDOM_0_1();
if(random < 0.20)
action = ScaleBy::create(3, 2);
else if (random < 0.40)
action = RotateBy::create(3, 360);
else if (random < 0.60)
action = Blink::create(1, 3);
else if (random < 0.8)
action = TintBy::create(2, 0, -255, -255);
else
action = FadeOut::create(2);

auto action_back = action->reverse();
auto seq = Sequence::create(action,action_back, NULL);
sprite->runAction(RepeatForever::create(seq));
}
//第四个test
bool NewClippingNodeTest::init()
{
bool bRet;
do{
CC_BREAK_IF(!MultiSceneTest::init());

auto winSize = Director::getInstance()->getWinSize();
auto clipper = ClippingNode::create();//创建剪裁对象
clipper->setTag(kTagClipperNode);
clipper->setContentSize(Size(200, 200));//设置setContentSize(),点击该区域即可实现content的移动，它的size与模板stencil的Size没有关系，只要点击区域在clipper设置的ContentSize内即可拖动content的图片，好像，设置的contentSize越大，content图片越小。不知道为什么？
clipper->ignoreAnchorPointForPosition(false);
clipper->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
clipper->setPosition(Vec2(winSize.width/2,winSize.height/2));

clipper->runAction(RepeatForever::create(RotateBy::create(1, 45)));//旋转
addChild(clipper);

clipper->setAlphaThreshold(0.05f);//属性设置
auto stencil = Sprite::create("grossini.png");
stencil->ignoreAnchorPointForPosition(false);
stencil->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
clipper->setStencil(stencil);//模板设置

//模板也可为DrawNode，可注释掉上面stencil的定义，取消此处注释，查看效果
//        auto stencil = DrawNode::create();
//        Vec2 rectangle[4];
//        rectangle[0] = Vec2(0, 0);
//        rectangle[1] = Vec2(clipper->getContentSize().width, 0);
//        rectangle[2] = Vec2(clipper->getContentSize().width, clipper->getContentSize().height);
//        rectangle[3] = Vec2(0, clipper->getContentSize().height);
//
//        Color4F white(1, 1, 1, 1);
//        stencil->drawPolygon(rectangle, 4, white, 1, white);
//        clipper->setStencil(stencil);

//设置剪裁检点要显示的内容
auto content = Sprite::create("HelloWorld.png");
content->setTag(kTagContentNode);
content->ignoreAnchorPointForPosition(false);
content->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
content->setPosition(Vec2(clipper->getContentSize().width/2,clipper->getContentSize().height/2));
clipper->addChild(content);

_scrolling = false;
//此处为测试用的，与demo无关
auto sprite = Sprite::create("grossini.png");
sprite->setPosition(Vec2(winSize.width/4,winSize.height/2));
addChild(sprite);
//多点触摸事件处理
auto listener = EventListenerTouchAllAtOnce::create();
listener->onTouchesBegan = CC_CALLBACK_2(NewClippingNodeTest::onTouchesBegan,this);
listener->onTouchesMoved = CC_CALLBACK_2(NewClippingNodeTest::onTouchesMoved,this);
listener->onTouchesEnded = CC_CALLBACK_2(NewClippingNodeTest::onTouchesEnded,this);
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);

bRet = true;
}while(0);
return bRet;
}

void NewClippingNodeTest::onTouchesBegan(const std::vector<Touch *> &touches, cocos2d::Event *event)
{
Touch* touch = touches[0];
auto clipper = this->getChildByTag(kTagClipperNode);
Vec2 point = clipper->convertToNodeSpace(Director::getInstance()->convertToGL(touch->getLocation()));
log("point.w = %f,point.h = %f",point.x,point.y);
auto rect = Rect(0,0,clipper->getContentSize().width,clipper->getContentSize().height);
log("clipper.w = %f,clipper.h = %f",clipper->getContentSize().width,clipper->getContentSize().height);
_scrolling = rect.containsPoint(point);
_lastPoint = point;
}
//使content图片跟随触摸点移动
void NewClippingNodeTest::onTouchesMoved(const std::vector<Touch *> &touches, cocos2d::Event *event)
{
if(!_scrolling) return;
Touch* touch = touches[0];
auto clipper = this->getChildByTag(kTagClipperNode);
auto point = clipper->convertToNodeSpace(Director::getInstance()->convertToGL(touch->getLocationInView()));
Vec2 diff = point - _lastPoint;
auto content = clipper->getChildByTag(kTagContentNode);
content->setPosition(content->getPosition() + diff);
_lastPoint = point;
}

void NewClippingNodeTest::onTouchesEnded(const std::vector<Touch *> &touches, cocos2d::Event *event)
{
if(!_scrolling) return;
_scrolling = false;
}

std::string NewClippingNodeTest::title() const
{
return "New Renderer";
}

std::string NewClippingNodeTest::subtitle() const
{
return "ClipNode";
}

//第五个test
bool NewDrawNodeTest::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!MultiSceneTest::init());

auto winSize = Director::getInstance()->getWinSize();
auto parent = Node::create();
//        parent->setPosition(winSize.width/2,winSize.height/2);
addChild(parent);

auto rectNode = DrawNode::create();
Vec2 rectangle[4];
rectangle[0] = Vec2(-50,-50);
rectangle[1] = Vec2(50,-50);
rectangle[2] = Vec2(50,50);
rectangle[3] = Vec2(-50,50);

Color4F white(1,1,1,1);
rectNode->drawPolygon(rectangle, 4, white, 1, white);//使用DrawNode创建对象
rectNode->setPosition(winSize.width/4,winSize.height/4);
parent->addChild(rectNode);

bRet = true;
}while(0);
return bRet;
}

std::string NewDrawNodeTest::title() const
{
return "New Renderer";
}

std::string NewDrawNodeTest::subtitle() const
{
return "DrawNode";
}
//第六个test
bool NewCullingTest::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!MultiSceneTest::init());

auto winSize = Director::getInstance()->getWinSize();
auto sprite = Sprite::create("btn-about-normal-vertical.png");
sprite->setRotation(5);
sprite->setPosition(Vec2(winSize.width/2,winSize.height/3));
sprite->setScale(2);
addChild(sprite);

auto sprite2 = Sprite::create("btn-about-normal-vertical.png");
sprite2->setRotation(-85);
sprite2->setPosition(Vec2(winSize.width/2,winSize.height*2/3));
sprite2->setScale(2);
addChild(sprite2);
//触摸事件处理
auto listener = EventListenerTouchOneByOne::create();
listener->setSwallowTouches(true);

listener->onTouchBegan = CC_CALLBACK_2(NewCullingTest::onTouchBegan,this);
listener->onTouchMoved = CC_CALLBACK_2(NewCullingTest::onTouchMoved, this);
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);
bRet = true;
}while(0);
return bRet;
}

bool NewCullingTest::onTouchBegan(cocos2d::Touch *touch, cocos2d::Event *event)
{
auto pos = touch->getLocation();
_lastPos = pos;
return true;
}
//移动Layer
void NewCullingTest::onTouchMoved(cocos2d::Touch *touch, cocos2d::Event *event)
{
auto pos = touch->getLocation();
auto offset = pos - _lastPos;
auto layerPos = getPosition();
auto newPos = layerPos + offset;
setPosition(newPos);
_lastPos = pos;
}

std::string NewCullingTest::title() const
{
return "New Render";
}
std::string NewCullingTest::subtitle() const
{
return "Drag the layer to test the result of culling";
}
//该测试没发现使用的意义
bool VBOFullTest::init()
{
bool bRet = false;
do{
CC_BREAK_IF(!MultiSceneTest::init());

auto winSize = Director::getInstance()->getWinSize();
Node* parent = Node::create();
parent->setPosition(Vec2(winSize.width/2, winSize.height/2));
addChild(parent);
log("Renderer::VBO_SIZE = %d",Renderer::VBO_SIZE);
for(int i = 0; i < Renderer::VBO_SIZE * 2; ++i)
{
Sprite* sprite = Sprite::create("grossini_dance_01.png");
sprite->setPosition(Vec2(i,0));
parent->addChild(sprite);
}

bRet = true;
}while(0);
return bRet;
}

std::string VBOFullTest::title() const
{
return "New Renderer";
}

std::string VBOFullTest::subtitle() const
{
return "VBO full test,everything should render normally";
}

4、VisibleRect代码

        该代码即testcpp工程给出的代码。不再赘述。