Method enableOutline

core/2d/Label.cpp:1446–1483

}

void Label::enableOutline(const Color4B& outlineColor, float outlineSize /* = -1 */)
{
    AXASSERT(_currentLabelType == LabelType::STRING_TEXTURE || _currentLabelType == LabelType::TTF,
             "Only supported system font and TTF!");

    if (outlineSize > 0 || _currLabelEffect == LabelEffect::OUTLINE)
    {
        if (_currentLabelType == LabelType::TTF)
        {
            _effectColorF.r = outlineColor.r / 255.0f;
            _effectColorF.g = outlineColor.g / 255.0f;
            _effectColorF.b = outlineColor.b / 255.0f;
            _effectColorF.a = outlineColor.a / 255.0f;

            if (outlineSize > 0 && _fontConfig.outlineSize != outlineSize)
            {

                _fontConfig.outlineSize = static_cast<int>(outlineSize);
                setTTFConfig(_fontConfig);
            }
            if (_useDistanceField && outlineSize > 0)
            {
                _currLabelEffect = LabelEffect::OUTLINE;
                updateShaderProgram();
            }
        }
        else if (_effectColorF != outlineColor || _outlineSize != outlineSize)
        {
            _effectColorF.r  = outlineColor.r / 255.f;
            _effectColorF.g  = outlineColor.g / 255.f;
            _effectColorF.b  = outlineColor.b / 255.f;
            _effectColorF.a  = outlineColor.a / 255.f;
            _currLabelEffect = LabelEffect::OUTLINE;
            _contentDirty    = true;
        }
        _outlineSize = outlineSize;
    }
}

void Label::enableShadow(const Color4B& shadowColor /* = Color4B::BLACK */,
                         const Vec2& offset /* = Vec2(2 ,-2)*/,