创建有颜色的Layer

layer默认的锚点为（0,0），如果不使用

layer->ignoreAnchorPointForPosition(false);

那么锚点位置无法修改

auto layer = LayerColor::create(Color4B(0, 255, 0, 255), 320, 320);
    auto size = Director::getInstance()->getVisibleSize();
    layer->ignoreAnchorPointForPosition(false);
    layer->setAnchorPoint(Point(0.5,0.5));
    layer->setPosition(Point(size.width / 2, size.height / 2));
    this->addChild(layer,2);
    Sprite* s = Sprite::create("red_block.png");
    s->setPosition(Point(size.width / 2, size.height / 2));
    this->addChild(s, 2);