cocos2d-x画线

在class HelloWorld : public cocos2d::CCLayer中添加

void draw();

实现：

void HelloWorld::draw()

{

    CCSize s = CCDirector::sharedDirector()->getWinSize();

    CCPointArray *array = CCPointArray::create();

    array->addControlPoint(ccp(, ));

    array->addControlPoint(ccp(, ));

    array->addControlPoint(ccp(s.width - , ));

    array->addControlPoint(ccp(s.width - , s.height - ));

    array->addControlPoint(ccp(, s.height - ));

    array->addControlPoint(ccp(, ));

    array->addControlPoint(ccp(s.width / , s.height / ));

    CCPointArray *array2 = CCPointArray::create();

    array2->addControlPoint(ccp(s.width / , ));

    array2->addControlPoint(ccp(s.width  -, ));

    array2->addControlPoint(ccp(s.width - , s.height - ));

    array2->addControlPoint(ccp(s.width / , s.height - ));

    array2->addControlPoint(ccp(s.width / , ));

                //个人理解是初始化用来存放点的栈

    kmGLPushMatrix();

                //定义栈的大小

    kmGLTranslatef(, , );

                //绘制曲线

    ccDrawCatmullRom(array, );

                //绘制完后弹出所存放的点

    kmGLPopMatrix();

                //由于上面只是弹出并不是释放，所以仍然可以通过点栈来绘制曲线

    ccDrawCatmullRom(array2,);

}

然后直接运行就可以了

补充：