Method updateLabelLetters

core/2d/Label.cpp:1031–1089

}

void Label::updateLabelLetters()
{
    if (!_letters.empty())
    {
        Rect uvRect;
        LabelLetter* letterSprite;
        int letterIndex;

        for (auto it = _letters.begin(); it != _letters.end();)
        {
            letterIndex  = it->first;
            letterSprite = (LabelLetter*)it->second;

            if (letterIndex >= _lengthOfString)
            {
                Node::removeChild(letterSprite, true);
                it = _letters.erase(it);
            }
            else
            {
                auto& letterInfo = _lettersInfo[letterIndex];
                if (letterInfo.valid)
                {
                    auto& letterDef    = _fontAtlas->_letterDefinitions[letterInfo.utf32Char];
                    uvRect.size.height = letterDef.height;
                    uvRect.size.width  = letterDef.width;
                    uvRect.origin.x    = letterDef.U;
                    uvRect.origin.y    = letterDef.V;

                    auto batchNode = _batchNodes.at(letterDef.textureID);
                    letterSprite->setTextureAtlas(batchNode->getTextureAtlas());
                    letterSprite->setTexture(_fontAtlas->getTexture(letterDef.textureID));
                    if (letterDef.width <= 0.f || letterDef.height <= 0.f)
                    {
                        letterSprite->setTextureAtlas(nullptr);
                    }
                    else
                    {
                        letterSprite->setTextureRect(uvRect, letterDef.rotated, uvRect.size);
                        letterSprite->setTextureAtlas(_batchNodes.at(letterDef.textureID)->getTextureAtlas());
                        letterSprite->setAtlasIndex(_lettersInfo[letterIndex].atlasIndex);
                    }

                    auto px =
                        letterInfo.positionX + _fontScale * uvRect.size.width / 2 + _linesOffsetX[letterInfo.lineIndex];
                    auto py = letterInfo.positionY - _fontScale * uvRect.size.height / 2 + _letterOffsetY;
                    letterSprite->setPosition(px, py);
                    letterSprite->setOpacity(_realOpacity);
                }
                else
                {
                    letterSprite->setTextureAtlas(nullptr);
                }
                this->updateLetterSpriteScale(letterSprite);
                ++it;
            }
        }
    }