绘制 矩形区域(做调试信息等)

<1>重写virtual void draw()方法

切记,在draw函数中,绘制图形,draw函数中绘制图形的语句你不能放在一个自己写的函数中,不然画不出来.

<2>代码示例

void HelloWorld::draw()
{
    CCLog("draw called");
    //-new-//
	CCSize mysize=CCDirector::sharedDirector()->getWinSize();
	//画个猥琐的直线
	ccDrawColor4B(255,255,255,130);
	glLineWidth(3);
	ccDrawLine(ccp(100,200),ccp(mysize.width-100,200));
    
	//再画个可爱的圈圈
	ccDrawColor4B(255,255,100,190);
	glLineWidth(3);
	ccDrawCircle(ccp(mysize.width/2,mysize.height/2),100,0,360,1,2,1);
    
	//再来画个点
	ccDrawColor4B(255,25,200,250);
	glLineWidth(3);
	ccPointSize(10);
	ccDrawPoint(ccp(mysize.width/2,mysize.height/2));
    
	//再来画个空心矩形
	ccDrawColor4B(24,25,200,140);
	glLineWidth(3);
	ccDrawRect(ccp(100,100),ccp(300,200));
    
	//再来个实心的
	ccDrawSolidRect(ccp(110,210),ccp(310,110),ccc4f(255,255,255,0.5f));
    
	//再来画个空心多边形
	ccDrawColor4B(240,225,100,130);
	glLineWidth(3);
	CCPoint Polyarray[]={ccp(20,100),ccp(50,40),ccp(250,420),ccp(510,450),ccp(210,140)};
	ccDrawPoly(Polyarray,5,1);
    
	//再来个实心的多边形
	CCPoint Polyarray2[]={ccp(120,150),ccp(150,420),ccp(350,120),ccp(310,250),ccp(320,170)};
	ccDrawSolidPoly(Polyarray2,5,ccc4f(142,245,70,0.3f));
    
	//绘制平面贝赛尔曲线
	ccDrawColor4B(100,100,100,255);
	ccDrawQuadBezier(ccp(0,320),ccp(160,100),ccp(480,320),100);
    
	//绘制立体贝赛尔曲线
	ccDrawColor4B(200,200,200,255);
	ccDrawCubicBezier(ccp(0,0),ccp(160,300),ccp(320,20),ccp(480,320),100);
	//-new-//
}