Exemplos de DrawingContext::DrawRectangle em C++ (Cpp)

Exemplo n.º 1

Arquivo: DebugNavigator.cpp Projeto: Mourtz/pomdog

//-----------------------------------------------------------------------
void DebugNavigator::Draw(DrawingContext & drawingContext)
{
    constexpr float minFramerate = 10.0f;
    constexpr float maxFramerate = 60.0f;
    constexpr std::uint16_t maxHistories = 20;

    {
        if (clock->TotalGameTime() - duration > Duration(0.2))
        {
            auto frameRate = clock->FrameRate();
            frameRateString = StringFormat("%4.2f fps", frameRate);
            frameRates.push_back(MathHelper::Clamp(frameRate, minFramerate, maxFramerate));

            if (frameRates.size() > maxHistories)
            {
                frameRates.pop_front();
            }
            duration = clock->TotalGameTime();
        }
    }

    auto transform = Transform() * drawingContext.Top();
    {
        auto graphTransform = Matrix3x2::CreateTranslation(Vector2{0, 16}) * transform;

        constexpr std::uint16_t maxGraphHeight = 26;
        constexpr float graphMarginLeft = 1.0f;

        auto graghWidth = (static_cast<float>(Width()) / maxHistories);

        std::int32_t startPosition = graghWidth * (maxHistories - frameRates.size());
        std::int32_t graphX = startPosition;
        for (auto & frameRate: frameRates)
        {
            auto amount = ((frameRate - minFramerate) / (maxFramerate - minFramerate));
            auto graphHeight = MathHelper::Clamp<std::uint16_t>(maxGraphHeight * amount, 1, maxGraphHeight);

            drawingContext.DrawRectangle(graphTransform, Color::CornflowerBlue,
                Rectangle(graphX, maxGraphHeight - graphHeight, graghWidth - graphMarginLeft, graphHeight));
            graphX += graghWidth;
        }
    }

    drawingContext.DrawString(transform * Matrix3x2::CreateTranslation({0.5f, -2.5f}),
        Color::White, FontWeight::Bold, FontSize::Medium, frameRateString);
}