CCCatmullRomBy和CCPointArray

CCCatmullRomBy:把某一对象以Catmull-Rom curve曲线移动一段距离

    CCPointArray *array = CCPointArray::create(20);
    
    array->addControlPoint(ccp(0, 0));
    array->addControlPoint(ccp(80, 80));
    array->addControlPoint(ccp(s.width - 80, 80));
    array->addControlPoint(ccp(s.width - 80, s.height - 80));
    array->addControlPoint(ccp(80, s.height - 80));
    array->addControlPoint(ccp(80, 80));
    array->addControlPoint(ccp(s.width / 2, s.height / 2));
    
    CCCatmullRomBy *action = CCCatmullRomBy::create(3, array);
    CCFiniteTimeAction *reverse = action->reverse();
    
    CCFiniteTimeAction *seq = CCSequence::create(action, reverse, NULL);
    
    m_tamara->runAction(seq);