//
// MainScene.hpp
// helloworld
//
// Created by apple on 16/9/19.
//
//
#ifndef MainScene_hpp
#define MainScene_hpp
#include <stdio.h>
#include "cocos2d.h"
using namespace cocos2d;
//定义一个场景类
class MainScene : public cocos2d::Layer{
private:
// 成员变量(私有的)
cocos2d::Sprite *sprite;//定义一个精灵成员变量
Size size;
public:
virtual bool init(); // 虚函数，返回值为布尔类型，没有函数
static cocos2d::Scene* createScene();//static是一个类方法返回场景
void menuCallback(Ref* pSender);
CREATE_FUNC(MainScene);
//重载draw方法
virtual void draw(Renderer *renderer, const Mat4 &transform, uint32_t flags) override;
protected:
//自定义draw实现
void onDraw(const cocos2d::Mat4 &transform, bool transformUpdated);
cocos2d::CustomCommand _customCommand;
};
#endif /* MainScene_hpp */
//
// MainScene.cpp
// helloworld
//
// Created by apple on 16/9/19.
//
//
#include "MainScene.hpp"
USING_NS_CC;
Scene * MainScene::createScene()
{
auto scene = Scene::create();
// CCScene * scene = CCScene::create();// 创建场景
//创建层
MainScene *layer = MainScene::create();
scene->addChild(layer);
return scene;
}
bool MainScene::init(){
if (!Layer::init()) {
return false;
}
//获取屏幕大小
size = Director::getInstance()->getVisibleSize();
//auto size = Director::getInstance()->getWinSize();
return true;
}
void MainScene::draw(Renderer *renderer, const Mat4 &transform, uint32_t flags)
{
_customCommand.init(_globalZOrder);
_customCommand.func = CC_CALLBACK_0(MainScene::onDraw, this, transform, flags);
renderer->addCommand(&_customCommand);
}
void MainScene::onDraw(const cocos2d::Mat4 &transform, bool transformUpdated)
{
//利用Stack缓存
Director *director = Director::getInstance();
//CCASSERT(nullptr != director, "Director is null when setting matrix stack");
director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, transform);
CHECK_GL_ERROR_DEBUG();
//画边框
DrawPrimitives::setDrawColor4B(255, 255, 255, 255);
glLineWidth(10);
Vec2 vertices[] = {Vec2(100, 100), Vec2(300, 100), Vec2(300, 300), Vec2(100, 300)};
DrawPrimitives::drawPoly(vertices, 4, true);
CHECK_GL_ERROR_DEBUG();
//绘制停止，释放
director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}
void MainScene::menuCallback(Ref* pSender)
{
}