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绘制图形例如以下：

程序代码：

须要又一次定义父类虚函数draw()

1、在HelloWorldScene.h头文件增加：

    virtual void draw();

2、定义实现：

void HelloWorld::draw()
{//add your code....CHECK_GL_ERROR_DEBUG();CCSize size = CCDirector::sharedDirector()->getVisibleSize();//线宽为1,蓝色线,不透明//ccDrawLine參数1：绘制起点坐标, 參数2：终点坐标glLineWidth( 1.0f );ccDrawColor4B(0,0,255,0);ccDrawLine(ccp(0, 640,), ccp(960, 0) );CHECK_GL_ERROR_DEBUG();//线宽为5,红色线,不透明//ccDrawLine參数1：绘制起点坐标, 參数2：终点坐标glLineWidth( 5.0f );ccDrawColor4B(255,0,0,255);ccDrawLine(ccp(0, 0,), ccp(960, 640) );CHECK_GL_ERROR_DEBUG();//设置OpenGL点的大小， 默认是正方形//ccDrawLine參数：绘制位置//ccPointSize(80);//ccDrawColor4B(0,0,255,128);//设置颜色//ccDrawPoint( ccp(size.width/2, size.height/2) );CHECK_GL_ERROR_DEBUG();// 画4个点的正方形CCPoint points[] = { ccp(60,60), ccp(70,70), ccp(60,70), ccp(70,60) };//四个点位置ccPointSize(80);ccDrawColor4B(0,255,255,255);ccDrawPoints( points, 4);CHECK_GL_ERROR_DEBUG();//在屏中间画一个由10段组成的圆, 与圆中心不连线//ccDrawCircle參数1：圆心位置。參数2：半径；參数3：角度；參数4：分段数。參数5：是否与圆中心连线glLineWidth(16);//宽度ccDrawColor4B(0, 255, 0, 255);//颜色ccDrawCircle(ccp(size.width/2, size.height/2), 100, 0, 10, false);CHECK_GL_ERROR_DEBUG();// 在屏中间画一个由50段组成的圆。与圆中心连线glLineWidth(2);ccDrawColor4B(0, 255, 255, 255);ccDrawCircle( ccp(size.width/2, size.height/2), 50, CC_DEGREES_TO_RADIANS(90), 50, true);CHECK_GL_ERROR_DEBUG();//画点数为5的多边形//ccDrawPoly參数1：点数组；參数2：点数。參数3：图形是否闭合ccDrawColor4B(255, 255, 0, 255);glLineWidth(10);CCPoint vertices[] = { ccp(0,0), ccp(50,50), ccp(100,50), ccp(100,100), ccp(50,100) };ccDrawPoly( vertices, 5, false);CHECK_GL_ERROR_DEBUG();// 画点数为5的闭合多边形, 并填充颜色//ccDrawSolidPoly參数1：点数组。參数2：点数。參数3：填充颜色glLineWidth(1);CCPoint filledVertices[] = { ccp(0,120), ccp(50,120), ccp(50,170), ccp(25,200), ccp(0,170) };ccDrawSolidPoly(filledVertices, 5, ccc4f(0.5f, 0.5f, 1, 1 ) );// 画三角形//ccDrawPoly參数1：点数组。參数2：点数；參数3：图形是否闭合ccDrawColor4B(255, 0, 255, 255);glLineWidth(2);CCPoint vertices2[] = { ccp(130,230), ccp(130,330), ccp(150,300) };ccDrawPoly( vertices2, 3, true);CHECK_GL_ERROR_DEBUG();// 画塞尔曲线//參数1：线起点位置；參数2：线中心点位置。參数3：线终点位置。參数4：线条段数ccDrawQuadBezier(ccp(0, 640-100),ccp(size.width/2, size.height/2-100),ccp(960, 640-100), 90);CHECK_GL_ERROR_DEBUG();//画有4个控制点的塞尔曲线ccDrawCubicBezier(ccp(size.width/2, size.height/2), ccp(size.width/2+100, size.height/2+150), ccp(size.width/2+200, size.height/2-80),ccp(960, 300),100);CHECK_GL_ERROR_DEBUG();//画黄色斜矩形CCPoint vertices3[] = {ccp(60,160), ccp(70,190), ccp(100,190), ccp(90,160)};ccDrawSolidPoly( vertices3, 4, ccc4f(1,1,0,1) );// 完毕后重置一下绘制状态glLineWidth(1);ccDrawColor4B(255,255,255,0);ccPointSize(1);CHECK_GL_ERROR_DEBUG();}