#include "../render_2D/export.h"
#include "render_2D/plottable/Curve_Sampling.h"
#include "render_2D/render/Blend2D_Cache.h"
#include <gtest/gtest.h>
#include <algorithm>
#include <array>
#include <chrono>
#include <cstddef>
#include <functional>
#include <future>
#include <memory_resource>
#include <set>
#include <thread>
#include <tuple>
#include <utility>
#include <vector>
namespace renderive {
namespace {
template <class Scene, class Build>
decltype(auto) build_initial(Scene& scene, Build&& build) {
    auto attach = scene.attach_builder();
    return std::invoke(std::forward<Build>(build), attach);
}
template <class Scene, class Edit>
void apply_runtime_edit(Scene& scene, Edit&& edit) {
    std::promise<void> completed;
    auto future = completed.get_future();
    scene.edit_renderables(
        [edit = std::forward<Edit>(edit), &completed](auto& editor) mutable {
            edit(editor);
            completed.set_value();
        });
    future.wait();
}
template <class Axis_Type>
concept Legacy_Axis_Property_Api = requires(Axis_Type& axis) {
    axis.x();
    axis.set_x(0);
    axis.coord_range();
    axis.set_coord_range(Range{});
};

template <class Axis_Type>
concept Legacy_Time_Axis_Property_Api = requires(Axis_Type& axis) {
    axis.visible_time_point_count();
    axis.set_visible_time_point_count(1);
    axis.time_format();
    axis.set_time_format({});
};

static_assert(!Legacy_Axis_Property_Api<Axis>);
static_assert(!Legacy_Axis_Property_Api<Time_Axis>);
static_assert(!Legacy_Time_Axis_Property_Api<Time_Axis>);

TEST(Renderive_Core2, RootIdentityAndRefreshDiagnosticsComeFromKernelState) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    ASSERT_TRUE(root);
    root->set_object_name("renamed-root");
    EXPECT_EQ(plot.root_renderable(), root);
    plot.set_viewport_size({32, 24});
    plot.activate_view();
    plot.set_max_render_fps(144.0);
    ASSERT_TRUE(plot.render_frame());
    const auto diagnostics = plot.diagnostics();
    EXPECT_DOUBLE_EQ(diagnostics.refresh.frequency_hz, 144.0);
    EXPECT_EQ(diagnostics.refresh.frame_count, 1u);
}
TEST(Renderive_Core2, EveryCurveInterpolationModeHasDistinctSamplingSemantics) {
    const std::array<double, 2> edge_values{0.0, 10.0};
    const Range domain{0.0, 1.0};
    const auto nearest = detail::curve_sampling::interpolate(
        edge_values, domain, Line_Interpolation_Mode::Nearest_Sample);
    const auto linear = detail::curve_sampling::interpolate(
        edge_values, domain, Line_Interpolation_Mode::Linear_Value);
    const auto power = detail::curve_sampling::interpolate(
        edge_values, domain, Line_Interpolation_Mode::Linear_Power_Domain);
    const auto step_left = detail::curve_sampling::interpolate(
        edge_values, domain, Line_Interpolation_Mode::Step_Left);
    const auto step_right = detail::curve_sampling::interpolate(
        edge_values, domain, Line_Interpolation_Mode::Step_Right);
    EXPECT_EQ(nearest.size(), 4u);
    EXPECT_EQ(linear.size(), 2u);
    ASSERT_EQ(power.size(), 5u);
    EXPECT_NEAR(power[2].value, 7.4036269, 1e-6);
    ASSERT_EQ(step_left.size(), 3u);
    ASSERT_EQ(step_right.size(), 3u);
    EXPECT_DOUBLE_EQ(step_left[1].coordinate, 1.0);
    EXPECT_DOUBLE_EQ(step_left[1].value, 0.0);
    EXPECT_DOUBLE_EQ(step_right[1].coordinate, 0.0);
    EXPECT_DOUBLE_EQ(step_right[1].value, 10.0);
    const std::array<double, 4> curved_values{0.0, 10.0, 0.0, 10.0};
    const auto cubic = detail::curve_sampling::interpolate(
        curved_values, {0.0, 3.0}, Line_Interpolation_Mode::Cubic_Value);
    ASSERT_EQ(cubic.size(), 13u);
    EXPECT_NEAR(cubic[2].value, 5.625, 1e-9);
    const std::array<double, 11> visible_values{};
    const Axis_Transform visible_x{{4.0, 6.0}, 0.0, 100.0};
    const Axis_Transform visible_y{{0.0, 1.0}, 0.0, 100.0, Orientation::Vertical};
    const auto clipped = detail::curve_points(
        visible_values, {0.0, 10.0}, visible_x, visible_y, true,
        Line_Interpolation_Mode::Linear_Value);
    EXPECT_LT(clipped.size(), visible_values.size());
    ASSERT_GE(clipped.size(), 2u);
    EXPECT_LE(clipped.front().x, 0.0);
    EXPECT_GE(clipped.back().x, 100.0);
}
TEST(Renderive_Core2, PainterScopedClipRestoresPreviousClip) {
    detail::Blend2D_Color_Cache cache;
    {
        detail::Painter painter(cache, {8, 2});
        {
            const auto clip = painter.scoped_clip({0.0, 0.0, 4.0, 2.0});
            painter.rect({0.0, 0.0, 8.0, 2.0}, Pen{.style = Line_Style::None},
                         Brush{Color::red(), Brush_Style::Solid});
        }
        {
            const auto clip = painter.scoped_clip({4.0, 0.0, 4.0, 2.0});
            painter.rect({0.0, 0.0, 8.0, 2.0}, Pen{.style = Line_Style::None},
                         Brush{Color::green(), Brush_Style::Solid});
        }
    }
    const Image_View view = cache.view();
    ASSERT_EQ(view.width, 8);
    ASSERT_EQ(view.height, 2);
    const auto* row = reinterpret_cast<const Pixel*>(view.data);
    EXPECT_EQ(row[1], pack_rgba(255, 0, 0));
    EXPECT_EQ(row[6], pack_rgba(0, 255, 0));
}
TEST(Renderive_Core2, BicubicHeatmapUsesRealCubicResampling) {
    const std::array<Pixel, 16> source{
        pack_rgba(255, 0, 0), pack_rgba(0, 0, 0), pack_rgba(255, 255, 255), pack_rgba(0, 0, 255),
        pack_rgba(0, 255, 0), pack_rgba(255, 255, 255), pack_rgba(0, 0, 0), pack_rgba(255, 0, 0),
        pack_rgba(0, 0, 255), pack_rgba(0, 0, 0), pack_rgba(255, 255, 255), pack_rgba(0, 255, 0),
        pack_rgba(255, 255, 255), pack_rgba(255, 0, 0), pack_rgba(0, 255, 0), pack_rgba(0, 0, 0)
    };
    const auto render = [&source](Image_Interpolation_Mode interpolation) {
        detail::Blend2D_Color_Cache cache;
        {
            detail::Painter painter(cache, {11, 11});
            painter.heatmap({0.0, 0.0, 11.0, 11.0}, 4, 4, source, interpolation);
        }
        const Image_View view = cache.view();
        std::vector<Pixel> pixels;
        pixels.reserve(static_cast<std::size_t>(view.width) * view.height);
        for (int y = 0; y < view.height; ++y) {
            const auto* row = reinterpret_cast<const Pixel*>(
                view.data + static_cast<std::ptrdiff_t>(y) * view.stride);
            pixels.insert(pixels.end(), row, row + view.width);
        }
        return pixels;
    };
    const auto bilinear = render(Image_Interpolation_Mode::Bilinear);
    const auto bicubic = render(Image_Interpolation_Mode::Bicubic);
    EXPECT_EQ(bilinear.size(), bicubic.size());
    EXPECT_NE(bilinear, bicubic);
}
TEST(Renderive_Core2, KernelSceneRendersBusinessObjectsIntoBlend2DFrame) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({320, 180});
    plot.activate_view();
    const auto root = plot.root_renderable();
    ASSERT_TRUE(root);
    auto [frequency_axis, power_axis, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency = Frequency_Axis::Builder{&attach}
                             .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                             .set<&Frequency_Axis::Properties::x>(32)
                             .set<&Frequency_Axis::Properties::y>(150)
                             .set<&Frequency_Axis::Properties::pixel_length>(270)
                             .set<&Frequency_Axis::Properties::coordinates>(Range{88.0, 108.0})
                             .build(root);
        auto power = Axis::Builder{&attach}
                         .set<&Axis::Properties::orientation>(Orientation::Vertical)
                         .set<&Axis::Properties::x>(32)
                         .set<&Axis::Properties::y>(8)
                         .set<&Axis::Properties::pixel_length>(142)
                         .set<&Axis::Properties::coordinates>(Range{-120.0, 0.0})
                         .build(root);
        auto value = Spectrum::Builder{&attach}
                         .set<&Spectrum::Properties::frequency_range>(Range{88.0, 108.0})
                         .set<&Spectrum::Properties::frequency_point_size>(64)
                         .set<&Spectrum::Properties::max_hold_visible>(true)
                         .build(root, frequency, power);
        return std::tuple{frequency, power, value};
    });
    frequency_axis->set<&Axis_Base_Properties::locale>(Number_Locale{','});
    frequency_axis->set<&Axis_Base_Properties::label_rotation_degrees>(15);
    EXPECT_EQ(frequency_axis->tick_label(88.5), "88,5 Hz");
    frequency_axis->set<&Axis_Properties::precision>(4);
    EXPECT_EQ(frequency_axis->tick_label(1'234'567.0), "1,2346 MHz");
    std::vector<double> samples(64);
    for (std::size_t index = 0; index < samples.size(); ++index)
        samples[index] = -100.0 + static_cast<double>(index % 24) * 3.0;
    spectrum->update_samples(samples);
    ASSERT_TRUE(plot.render_frame());
    bool saw_frame = false;
    bool saw_drawn_pixel = false;
    plot.with_frame([&](Image_View view) {
        saw_frame = !view.empty() && view.width == 320 && view.height == 180;
        if (!saw_frame)
            return;
        for (int y = 0; y < view.height && !saw_drawn_pixel; ++y) {
            const auto* row = view.data + static_cast<std::ptrdiff_t>(y) * view.stride;
            for (int x = 0; x < view.width * static_cast<int>(sizeof(Pixel)); ++x) {
                if (row[x] != std::byte{}) {
                    saw_drawn_pixel = true;
                    break;
                }
            }
        }
    });
    EXPECT_TRUE(saw_frame);
    EXPECT_TRUE(saw_drawn_pixel);
    EXPECT_EQ(plot.diagnostics().refresh.frame_count, 1u);
    EXPECT_FALSE(plot.render_frame());
    samples.front() += 1.0;
    spectrum->update_samples(samples);
    EXPECT_TRUE(plot.render_frame(true));
    frequency_axis->set<&Axis_Properties::wheel>(true);
    const Range before_zoom = frequency_axis->get<&Axis_Properties::coordinates>();
    Wheel_Event wheel;
    wheel.position = {160.0, 150.0};
    wheel.angle_delta_y = 120.0;
    plot.dispatch_event(wheel);
    EXPECT_TRUE(wheel.is_accepted());
    EXPECT_LT(frequency_axis->get<&Axis_Properties::coordinates>().size(), before_zoom.size());
    EXPECT_TRUE(plot.render_frame());
    apply_runtime_edit(plot, [root, frequency_axis, power_axis, spectrum](auto& editor) {
        editor.set_display_parent(frequency_axis, root);
        editor.set_display_parent(power_axis, root);
        editor.clear_display_parent(spectrum);
        editor.clear_dependency_parent(spectrum);
        editor.detach(spectrum);
    });
    EXPECT_TRUE(plot.render_frame(true));
    EXPECT_FALSE(plot.render_frame());
}
TEST(Renderive_Core2, StandaloneRenderableBuilderJoinsSceneOnlyInsideRuntimeEditor) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    const auto [frequency, power] = build_initial(plot, [&](auto& attach) {
        return std::pair{
            Frequency_Axis::Builder{&attach}
                .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                .build(root),
            Axis::Builder{&attach}
                .set<&Axis::Properties::orientation>(Orientation::Vertical)
                .build(root)
        };
    });
    const auto spectrum = Spectrum::Builder{}.build(root, frequency, power);
    ASSERT_TRUE(spectrum);
    EXPECT_TRUE(std::ranges::none_of(
        plot.render_scene().topology_snapshot().renderables,
        [&](const auto& renderable) {
            return renderable.get() == spectrum.get();
        }));
    apply_runtime_edit(plot, [root, frequency, power, spectrum](auto& editor) {
        editor.attach(spectrum);
        editor.add_display_parent(spectrum, root);
        editor.add_dependency_parent(spectrum, root);
        editor.add_dependency_parent(spectrum, frequency);
        editor.add_dependency_parent(spectrum, power);
        editor.add_display_parent(frequency, spectrum);
        editor.add_display_parent(power, spectrum);
    });
    EXPECT_TRUE(std::ranges::any_of(
        plot.render_scene().topology_snapshot().renderables,
        [&](const auto& renderable) {
            return renderable.get() == spectrum.get();
        }));
}
TEST(Renderive_Core2, TimeAxisUsesOneFontStateAndFormatsConfiguredLabels) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    auto axis = build_initial(plot, [&](auto& attach) {
        return Time_Axis::Builder{&attach}
            .set<&Time_Axis::Properties::orientation>(Orientation::Horizontal)
            .set<&Time_Axis::Properties::format>("hh-mm-ss.zzz")
            .set<&Time_Axis::Properties::unit_text_font>(Font{18.0, 700, true})
            .set<&Time_Axis::Properties::tick_label_spacing_px>(17)
            .build(root);
    });
    ASSERT_TRUE(axis);
    const int tick = axis->append_time(Time_Of_Day{3'723'045});
    EXPECT_EQ(axis->tick_label(tick), "01-02-03.045");
    EXPECT_EQ(axis->get<&Axis_Base_Properties::unit_text_font>(), (Font{18.0, 700, true}));
    EXPECT_EQ(axis->get<&Time_Axis::Properties::tick_label_spacing_px>(), 17);
}
TEST(Renderive_Core2, PerformanceOverlayConsumesKernelFrameDiagnostics) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({160, 90});
    plot.activate_view();
    plot.set_max_render_fps(120.0);
    Performance_Overlay_Options options;
    options.log.enabled = false;
    const auto overlay = attach_performance_overlay(plot, options);
    ASSERT_TRUE(overlay);
    set_performance_plot_name(plot, "integration");
    set_performance_overlay_enabled(plot, true);
    ASSERT_TRUE(plot.render_frame(true));
    const auto snapshot = overlay->display_snapshot();
    ASSERT_TRUE(snapshot);
    EXPECT_EQ(snapshot->plot_name, "integration");
    EXPECT_EQ(snapshot->viewport_size, (Size{160, 90}));
    EXPECT_FALSE(snapshot->lines.empty());
    EXPECT_EQ(snapshot->frame_count, 1u);
    EXPECT_DOUBLE_EQ(plot.max_render_fps(), 120.0);
}
TEST(Renderive_Core2, AllFrameControlModesUseKernelStrategiesAndExposeObservers) {
    Plot_Scene manual({.frame_mode = Plot_Frame_Mode::Manual});
    manual.init();
    manual.set_viewport_size({64, 40});
    EXPECT_EQ(manual.frame_mode(), Plot_Frame_Mode::Manual);
    ASSERT_TRUE(manual.prepare_frame());
    auto manual_observer = manual.frame_status();
    EXPECT_EQ(manual_observer.last_event, "prepared");
    EXPECT_EQ(manual_observer.pending_frame_count, 1u);
    ASSERT_TRUE(manual.refresh_manual_frame());
    ASSERT_TRUE(manual.render_prepared_frame());
    manual_observer = manual.frame_status();
    EXPECT_EQ(manual_observer.last_event, "rendered");
    EXPECT_EQ(manual_observer.consumed_frame_count, 1u);
    Plot_Scene low_latency;
    low_latency.init();
    low_latency.set_viewport_size({64, 40});
    low_latency.activate_view();
    ASSERT_TRUE(low_latency.render_frame(true));
    const auto low_observer = low_latency.frame_status();
    EXPECT_EQ(low_latency.frame_mode(), Plot_Frame_Mode::Low_Latency);
    EXPECT_EQ(low_observer.last_event, "lifecycle_completed");
    EXPECT_EQ(low_observer.consumed_frame_count, 1u);
    Plot_Scene playback({.frame_mode = Plot_Frame_Mode::Playback});
    playback.init();
    playback.set_viewport_size({64, 40});
    ASSERT_TRUE(playback.prepare_frame());
    ASSERT_TRUE(playback.prepare_frame());
    ASSERT_TRUE(playback.prepare_frame());
    auto playback_observer = playback.frame_status();
    EXPECT_EQ(playback.frame_mode(), Plot_Frame_Mode::Playback);
    EXPECT_EQ(playback_observer.last_event, "enqueued");
    EXPECT_EQ(playback_observer.pending_frame_count, 3u);
    ASSERT_TRUE(playback.render_prepared_frame());
    playback_observer = playback.frame_status();
    EXPECT_EQ(playback_observer.last_event, "rendered");
    EXPECT_EQ(playback_observer.pending_frame_count, 2u);
    EXPECT_EQ(playback_observer.consumed_frame_count, 1u);
}
TEST(Renderive_Core2, RetainedAxisAndTimeAxisApisRoundTripWithoutWebAdapters) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    ASSERT_TRUE(root);
    const auto axis = build_initial(plot, [&](auto& attach) {
        return Axis::Builder{&attach}
            .set<&Axis::Properties::orientation>(Orientation::Vertical)
            .set<&Axis::Properties::x>(31)
            .set<&Axis::Properties::y>(17)
            .set<&Axis::Properties::pixel_length>(240)
            .set<&Axis::Properties::tick_length>(13)
            .set<&Axis::Properties::sub_tick_length>(7)
            .set<&Axis::Properties::color>(Color{10, 20, 30, 255})
            .set<&Axis::Properties::unit_text>("dB")
            .set<&Axis::Properties::unit_text_font>(Font{15.0, 650, true})
            .set<&Axis::Properties::unit_text_pen>(Pen{Color{40, 50, 60, 255}, 2.0})
            .set<&Axis::Properties::unit_text_background_brush>(Brush{Color{3, 4, 5, 255}, Brush_Style::Solid})
            .set<&Axis::Properties::label_rotation_degrees>(27)
            .set<&Axis::Properties::coordinates>(Range{-120.0, -20.0})
            .set<&Axis::Properties::precision>(4)
            .set<&Axis::Properties::wheel>(true)
            .set<&Axis::Properties::drag>(true)
            .build(root);
    });
    ASSERT_TRUE(axis);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::x>(), 31);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::y>(), 17);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::orientation>(), Orientation::Vertical);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::pixel_length>(), 240U);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::tick_length>(), 13);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::sub_tick_length>(), 7);
    EXPECT_EQ(axis->get<&Axis_Base_Properties::color>(), (Color{10, 20, 30, 255}));
    EXPECT_EQ(axis->get<&Axis_Base_Properties::unit_text>(), "dB");
    EXPECT_EQ(axis->get<&Axis_Base_Properties::unit_text_font>(), (Font{15.0, 650, true}));
    EXPECT_EQ(axis->get<&Axis_Base_Properties::unit_text_pen>(), (Pen{Color{40, 50, 60, 255}, 2.0}));
    EXPECT_EQ(axis->get<&Axis_Base_Properties::unit_text_background_brush>(),
              (Brush{Color{3, 4, 5, 255}, Brush_Style::Solid}));
    EXPECT_EQ(axis->get<&Axis_Base_Properties::label_rotation_degrees>(), 27);
    EXPECT_EQ(axis->get<&Axis_Properties::coordinates>(), (Range{-120.0, -20.0}));
    EXPECT_EQ(axis->get<&Axis_Properties::precision>(), 4);
    EXPECT_TRUE(axis->get<&Axis_Properties::wheel>());
    EXPECT_TRUE(axis->get<&Axis_Properties::drag>());
    EXPECT_THROW(axis->set<&Axis_Properties::precision>(13), std::out_of_range);
    EXPECT_THROW(axis->set<&Axis_Properties::coordinates>(Range{1.0, 1.0}),
                 std::invalid_argument);
    axis->set<&Axis_Base_Properties::locale>(Number_Locale{','});
    axis->set<&Axis_Properties::coordinates>(Range{-100.0, -20.0});
    EXPECT_EQ(axis->get<&Axis_Base_Properties::locale>(), (Number_Locale{','}));
    EXPECT_EQ(axis->get<&Axis_Properties::coordinates>(), (Range{-100.0, -20.0}));
    const Axis_Transform numeric_transform = axis->transform();
    EXPECT_DOUBLE_EQ(numeric_transform.pixel_to_coord(numeric_transform.coord_to_pixel(-60.0)), -60.0);
    EXPECT_GT(static_cast<int>(numeric_transform.pixel_length) + 1, 0);
    EXPECT_GT(axis->tick_step(numeric_transform.coordinate_range), 0.0);
    EXPECT_GE(axis->sub_tick_count(axis->tick_step(numeric_transform.coordinate_range)), 0);
    const auto time_axis = build_initial(plot, [&](auto& attach) {
        return Time_Axis::Builder{&attach}
            .set<&Time_Axis::Properties::orientation>(Orientation::Horizontal)
            .set<&Time_Axis::Properties::x>(12)
            .set<&Time_Axis::Properties::y>(280)
            .set<&Time_Axis::Properties::pixel_length>(300)
            .set<&Time_Axis::Properties::visible_count>(32)
            .set<&Time_Axis::Properties::tick_label_spacing_px>(19)
            .set<&Time_Axis::Properties::format>("hh:mm:ss.zzz")
            .set<&Time_Axis::Properties::unit_text_font>(Font{16.0, 700, true})
            .set<&Time_Axis::Properties::newest_at_start>(true)
            .build(root);
    });
    ASSERT_TRUE(time_axis);
    const int first = time_axis->append_time({3'723'004});
    const int second = time_axis->append_time({3'724'005});
    EXPECT_EQ(time_axis->get<&Time_Axis::Properties::visible_count>(), 32);
    EXPECT_EQ(time_axis->get<&Time_Axis::Properties::tick_label_spacing_px>(), 19);
    EXPECT_EQ(time_axis->get<&Time_Axis::Properties::format>(), "hh:mm:ss.zzz");
    EXPECT_EQ(time_axis->get<&Axis_Base_Properties::unit_text_font>(), (Font{16.0, 700, true}));
    EXPECT_TRUE(time_axis->get<&Time_Axis::Properties::newest_at_start>());
    EXPECT_THROW(time_axis->set<&Time_Axis::Properties::visible_count>(1), std::out_of_range);
    EXPECT_EQ(time_axis->time_point_count(), 2U);
    EXPECT_EQ(time_axis->tick_to_time(first), (Time_Of_Day{3'723'004}));
    EXPECT_EQ(time_axis->tick_to_time(second), (Time_Of_Day{3'724'005}));
    EXPECT_EQ(time_axis->tick_label(first), "01:02:03.004");
}
TEST(Renderive_Core2, RetainedSpectrumApisRoundTripAndMarkersRemainObservable) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({360, 240});
    plot.activate_view();
    const auto root = plot.root_renderable();
    auto [frequency, power, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .set<&Frequency_Axis::Properties::x>(30)
                                  .set<&Frequency_Axis::Properties::y>(210)
                                  .set<&Frequency_Axis::Properties::pixel_length>(300)
                                  .set<&Frequency_Axis::Properties::coordinates>(Range{90.0, 110.0})
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .set<&Axis::Properties::x>(30)
                              .set<&Axis::Properties::y>(20)
                              .set<&Axis::Properties::pixel_length>(190)
                              .set<&Axis::Properties::coordinates>(Range{-20.0, -120.0})
                              .build(root);
        auto value = Spectrum::Builder{&attach}
                         .set<&Spectrum::Properties::frequency_range>(Range{90.0, 110.0})
                         .set<&Spectrum::Properties::frequency_point_size>(4)
                         .set<&Spectrum::Properties::center_frequency>(100.0)
                         .set<&Spectrum::Properties::sweep_frequency_range>(Range{96.0, 104.0})
                         .set<&Spectrum::Properties::max_hold_visible>(true)
                         .set<&Spectrum::Properties::min_hold_visible>(true)
                         .set<&Spectrum::Properties::max_marker_visible>(true)
                         .set<&Spectrum::Properties::use_min_marker>(true)
                         .set<&Spectrum::Properties::sweep_region_visible>(true)
                         .set<&Spectrum::Properties::visible_range_only>(false)
                         .set<&Spectrum::Properties::interpolation_mode>(Line_Interpolation_Mode::Cubic_Value)
                         .build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, value};
    });
    ASSERT_TRUE(spectrum);
    spectrum->set<&Spectrum::Properties::max_brush>(Brush{Color{1, 2, 3, 80}, Brush_Style::Solid});
    spectrum->set<&Spectrum::Properties::current_brush>(Brush{Color{4, 5, 6, 90}, Brush_Style::Solid});
    spectrum->set<&Spectrum::Properties::min_brush>(Brush{Color{7, 8, 9, 100}, Brush_Style::Solid});
    spectrum->set<&Spectrum::Properties::max_pen>(Pen{Color{10, 20, 30, 255}, 2.0});
    spectrum->set<&Spectrum::Properties::current_pen>(Pen{Color{40, 50, 60, 255}, 2.5});
    spectrum->set<&Spectrum::Properties::min_pen>(Pen{Color{70, 80, 90, 255}, 3.0});
    spectrum->set<&Spectrum::Properties::selected_marker_pen>(Pen{Color{11, 22, 33, 255}, 4.0});
    spectrum->set<&Spectrum::Properties::marker_pen>(Pen{Color{44, 55, 66, 255}, 1.5});
    spectrum->set<&Spectrum::Properties::middle_frequency_pen>(Pen{Color{77, 88, 99, 255}, 1.25});
    spectrum->set<&Spectrum::Properties::sweep_region_brush>(Brush{Color{12, 34, 56, 70}, Brush_Style::Solid});
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::frequency_point_size>(), 4);
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::frequency_range>(), (Range{90.0, 110.0}));
    EXPECT_DOUBLE_EQ(spectrum->get<&Spectrum::Properties::center_frequency>(), 100.0);
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::sweep_frequency_range>(), (Range{96.0, 104.0}));
    EXPECT_TRUE(spectrum->get<&Spectrum::Properties::max_hold_visible>());
    EXPECT_TRUE(spectrum->get<&Spectrum::Properties::min_hold_visible>());
    EXPECT_TRUE(spectrum->get<&Spectrum::Properties::max_marker_visible>());
    EXPECT_TRUE(spectrum->get<&Spectrum::Properties::use_min_marker>());
    EXPECT_TRUE(spectrum->get<&Spectrum::Properties::sweep_region_visible>());
    EXPECT_FALSE(spectrum->get<&Spectrum::Properties::visible_range_only>());
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::interpolation_mode>(), Line_Interpolation_Mode::Cubic_Value);
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::max_brush>(), (Brush{Color{1, 2, 3, 80}, Brush_Style::Solid}));
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::current_pen>(), (Pen{Color{40, 50, 60, 255}, 2.5}));
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::sweep_region_brush>(),
              (Brush{Color{12, 34, 56, 70}, Brush_Style::Solid}));
    std::pmr::vector<double> samples{std::pmr::get_default_resource()};
    samples.assign({-100.0, -80.0, -70.0, -50.0});
    spectrum->update_samples(std::move(samples));
    EXPECT_EQ(spectrum->sample_count(), 4U);
    EXPECT_GT(spectrum->rendered_point_count(), 4U);
    bool valid{};
    EXPECT_DOUBLE_EQ(spectrum->power_at(100.0, valid), -75.0);
    EXPECT_TRUE(valid);
    EXPECT_DOUBLE_EQ(spectrum->power_at(200.0, valid), 0.0);
    EXPECT_FALSE(valid);
    spectrum->add_custom_marker(96.0);
    spectrum->add_custom_line_marker(102.0);
    EXPECT_EQ(spectrum->selectable_line_marker_count(), 2);
    spectrum->select_next_marker();
    EXPECT_EQ(spectrum->selected_marker_index(), 0);
    spectrum->set_current_marker_frequency(97.0);
    EXPECT_DOUBLE_EQ(spectrum->marker_frequency(0), 97.0);
    spectrum->select_previous_marker();
    EXPECT_EQ(spectrum->selected_marker_index(), 1);
    spectrum->remove_selected_marker();
    EXPECT_EQ(spectrum->selectable_line_marker_count(), 1);
    spectrum->remove_custom_marker(97.1);
    EXPECT_EQ(spectrum->selectable_line_marker_count(), 0);
    spectrum->clear_custom_markers();
    EXPECT_EQ(spectrum->selected_marker_index(), -1);
    EXPECT_TRUE(plot.render_frame(true));
}
TEST(Renderive_Core2, RetainedHeatmapSweepAndTraceApisPreserveDataShapes) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({420, 280});
    plot.activate_view();
    const auto root = plot.root_renderable();
    auto [frequency, power, time, waterfall] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .set<&Frequency_Axis::Properties::x>(40)
                                  .set<&Frequency_Axis::Properties::y>(250)
                                  .set<&Frequency_Axis::Properties::pixel_length>(340)
                                  .set<&Frequency_Axis::Properties::coordinates>(Range{0.0, 4.0})
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .set<&Axis::Properties::x>(40)
                              .set<&Axis::Properties::y>(20)
                              .set<&Axis::Properties::pixel_length>(230)
                              .set<&Axis::Properties::coordinates>(Range{0.0, -120.0})
                              .build(root);
        auto time_axis = Time_Axis::Builder{&attach}
                             .set<&Time_Axis::Properties::orientation>(Orientation::Vertical)
                             .set<&Time_Axis::Properties::x>(40)
                             .set<&Time_Axis::Properties::y>(20)
                             .set<&Time_Axis::Properties::pixel_length>(230)
                             .set<&Time_Axis::Properties::visible_count>(8)
                             .build(root);
        auto value = Waterfall::Builder{&attach}
                         .set<&Waterfall::Properties::frequency_range>(Range{0.0, 4.0})
                         .set<&Waterfall::Properties::power_range>(Range{-120.0, 0.0})
                         .set<&Waterfall::Properties::frequency_bin_count>(4)
                         .set<&Waterfall::Properties::visible_range_only>(false)
                         .set<&Waterfall::Properties::interpolation_mode>(Image_Interpolation_Mode::Bicubic)
                         .build(root, frequency_axis, time_axis);
        return std::tuple{frequency_axis, power_axis, time_axis, value};
    });
    ASSERT_TRUE(waterfall);
    EXPECT_EQ(waterfall->get<&Waterfall::Properties::frequency_range>(), (Range{0.0, 4.0}));
    EXPECT_EQ(waterfall->get<&Waterfall::Properties::power_range>(), (Range{-120.0, 0.0}));
    EXPECT_EQ(waterfall->get<&Waterfall::Properties::frequency_bin_count>(), 4);
    EXPECT_FALSE(waterfall->get<&Waterfall::Properties::visible_range_only>());
    EXPECT_EQ(waterfall->get<&Waterfall::Properties::interpolation_mode>(), Image_Interpolation_Mode::Bicubic);
    const std::array<double, 4> row1{-100.0, -80.0, -60.0, -40.0};
    waterfall->append_row(Time_Of_Day{1000}, row1);
    std::pmr::vector<double> row2{std::pmr::get_default_resource()};
    row2.assign({-90.0, -70.0, -50.0, -30.0});
    waterfall->append_row(Time_Of_Day{2000}, std::move(row2));
    EXPECT_EQ(waterfall->row_count(), 2U);
    EXPECT_EQ(waterfall->stored_point_count(), 8U);
    EXPECT_EQ(waterfall->rendered_cell_count(), 8U);
    auto afterglow = build_initial(plot, [&](auto& attach) {
        return Afterglow::Builder{&attach}
            .set<&Afterglow::Properties::frequency_range>(Range{0.0, 4.0})
            .set<&Afterglow::Properties::power_range>(Range{-120.0, 0.0})
            .set<&Afterglow::Properties::frequency_point_size>(4)
            .set<&Afterglow::Properties::power_point_size>(8)
            .set<&Afterglow::Properties::interpolate>(false)
            .set<&Afterglow::Properties::attenuation_rate>(0.35)
            .build(root, frequency, power);
    });
    ASSERT_TRUE(afterglow);
    EXPECT_EQ(afterglow->get<&Afterglow::Properties::frequency_range>(), (Range{0.0, 4.0}));
    EXPECT_EQ(afterglow->get<&Afterglow::Properties::power_range>(), (Range{-120.0, 0.0}));
    EXPECT_EQ(afterglow->get<&Afterglow::Properties::frequency_point_size>(), 4);
    EXPECT_EQ(afterglow->get<&Afterglow::Properties::power_point_size>(), 8);
    EXPECT_FALSE(afterglow->get<&Afterglow::Properties::interpolate>());
    EXPECT_DOUBLE_EQ(afterglow->get<&Afterglow::Properties::attenuation_rate>(), 0.35);
    afterglow->append_spectrum(row1);
    std::pmr::vector<double> glow2{std::pmr::get_default_resource()};
    glow2.assign({-95.0, -75.0, -55.0, -35.0});
    afterglow->append_spectrum(std::move(glow2));
    EXPECT_EQ(afterglow->history_count(), 2U);
    EXPECT_EQ(afterglow->latest_spectrum_point_count(), 4U);
    EXPECT_EQ(afterglow->rendered_cell_count(), 32U);
    afterglow->set<&Afterglow::Properties::attenuation_rate>(2.0);
    EXPECT_DOUBLE_EQ(afterglow->get<&Afterglow::Properties::attenuation_rate>(), 1.0);
    auto sweep = build_initial(plot, [&](auto& attach) {
        return Sweep_Spectrum::Builder{&attach}
            .set<&Sweep_Spectrum::Properties::frequency_range>(Range{0.0, 8.0})
            .set<&Sweep_Spectrum::Properties::bins_per_block>(4)
            .set<&Sweep_Spectrum::Properties::block_count>(2)
            .set<&Sweep_Spectrum::Properties::pen>(Pen{Color{1, 120, 220, 255}, 2.0})
            .set<&Sweep_Spectrum::Properties::current_frequency_pen>(Pen{Color{240, 80, 20, 255}, 3.0})
            .set<&Sweep_Spectrum::Properties::visible_range_only>(false)
            .set<&Sweep_Spectrum::Properties::interpolation_mode>(Line_Interpolation_Mode::Step_Right)
            .build(root, frequency, power);
    });
    ASSERT_TRUE(sweep);
    EXPECT_EQ(sweep->get<&Sweep_Spectrum::Properties::frequency_range>(), (Range{0.0, 8.0}));
    EXPECT_EQ(sweep->get<&Sweep_Spectrum::Properties::bins_per_block>(), 4);
    EXPECT_EQ(sweep->get<&Sweep_Spectrum::Properties::block_count>(), 2);
    EXPECT_FALSE(sweep->get<&Sweep_Spectrum::Properties::visible_range_only>());
    EXPECT_EQ(sweep->get<&Sweep_Spectrum::Properties::interpolation_mode>(), Line_Interpolation_Mode::Step_Right);
    sweep->append_block(row1);
    sweep->append_block(row1);
    std::pmr::vector<double> block3{std::pmr::get_default_resource()};
    block3.assign(row1.begin(), row1.end());
    sweep->append_block(std::move(block3));
    EXPECT_EQ(sweep->stored_block_count(), 2U);
    EXPECT_EQ(sweep->stored_point_count(), 8U);
    EXPECT_GT(sweep->rendered_point_count(), 0U);
    auto trace = build_initial(plot, [&](auto& attach) {
        return Frequency_Trace::Builder{&attach}
            .set<&Frequency_Trace::Properties::pen>(Pen{Color{120, 240, 80, 255}, 2.0})
            .build(root, time, power);
    });
    ASSERT_TRUE(trace);
    trace->append_sample(Time_Of_Day{3000}, -80.0);
    trace->append_sample(Time_Of_Day{4000}, -70.0);
    EXPECT_EQ(trace->sample_count(), 2U);
    EXPECT_EQ(trace->rendered_point_count(), 2U);
    EXPECT_TRUE(plot.render_frame(true));
}
TEST(Renderive_Core2, RetainedSelectionAndConstellationApisDriveInteractionAndLayout) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({360, 260});
    plot.activate_view();
    const auto root = plot.root_renderable();
    auto [horizontal, vertical, selection] = build_initial(plot, [&](auto& attach) {
        auto horizontal_axis = Axis::Builder{&attach}
                                   .set<&Axis::Properties::orientation>(Orientation::Horizontal)
                                   .set<&Axis::Properties::x>(30)
                                   .set<&Axis::Properties::y>(230)
                                   .set<&Axis::Properties::pixel_length>(300)
                                   .set<&Axis::Properties::coordinates>(Range{-3.0, 3.0})
                                   .build(root);
        auto vertical_axis = Axis::Builder{&attach}
                                 .set<&Axis::Properties::orientation>(Orientation::Vertical)
                                 .set<&Axis::Properties::x>(30)
                                 .set<&Axis::Properties::y>(20)
                                 .set<&Axis::Properties::pixel_length>(210)
                                 .set<&Axis::Properties::coordinates>(Range{3.0, -3.0})
                                 .build(root);
        auto value = Selection_Rectangle_Overlay::Builder{&attach}
                         .set<&Selection_Rectangle_Overlay::Properties::label_font>(Font{14.0, 600, true})
                         .set<&Selection_Rectangle_Overlay::Properties::label_pen>(Pen{Color{20, 220, 180, 255}, 2.0})
                         .set<&Selection_Rectangle_Overlay::Properties::selection_brush>(Brush{Color{20, 80, 220, 60}, Brush_Style::Solid})
                         .set<&Selection_Rectangle_Overlay::Properties::selection_border_pen>(Pen{Color{240, 200, 60, 255}, 2.0, Line_Style::Dash})
                         .build(root, horizontal_axis, vertical_axis);
        return std::tuple{horizontal_axis, vertical_axis, value};
    });
    ASSERT_TRUE(selection);
    EXPECT_EQ(selection->get<&Selection_Rectangle_Overlay::Properties::label_font>(), (Font{14.0, 600, true}));
    EXPECT_EQ(selection->get<&Selection_Rectangle_Overlay::Properties::label_pen>(), (Pen{Color{20, 220, 180, 255}, 2.0}));
    EXPECT_EQ(selection->get<&Selection_Rectangle_Overlay::Properties::selection_brush>(),
              (Brush{Color{20, 80, 220, 60}, Brush_Style::Solid}));
    EXPECT_EQ(selection->get<&Selection_Rectangle_Overlay::Properties::selection_border_pen>(),
              (Pen{Color{240, 200, 60, 255}, 2.0, Line_Style::Dash}));
    Pointer_Event press(Event_Type::Pointer_Press);
    press.position = {80.0, 70.0};
    press.button = Mouse_Button::Left;
    selection->dispatch_event(press);
    EXPECT_TRUE(press.is_accepted());
    Pointer_Event move(Event_Type::Pointer_Move);
    move.position = {260.0, 180.0};
    selection->dispatch_event(move);
    EXPECT_TRUE(move.is_accepted());
    Pointer_Event release(Event_Type::Pointer_Release);
    release.position = {260.0, 180.0};
    release.button = Mouse_Button::Left;
    selection->dispatch_event(release);
    EXPECT_TRUE(release.is_accepted());
    ASSERT_EQ(selection->selected_regions().size(), 1U);
    EXPECT_FALSE(selection->selected_regions().front().empty());
    selection->clear_selected_regions();
    EXPECT_TRUE(selection->selected_regions().empty());
    auto constellation = build_initial(plot, [&](auto& attach) {
        return Constellation_Diagram::Builder{&attach}
                         .set<&Constellation_Diagram::Properties::i_range>(Range{-2.0, 2.0})
                         .set<&Constellation_Diagram::Properties::q_range>(Range{-3.0, 3.0})
                         .set<&Constellation_Diagram::Properties::point_color>(Color{80, 220, 255, 255})
                         .set<&Constellation_Diagram::Properties::anchor_color>(Color{255, 180, 40, 255})
                         .set<&Constellation_Diagram::Properties::point_lifetime_ms>(2000)
                         .set<&Constellation_Diagram::Properties::type>(Constellation_Diagram_Type::Psk16)
                         .set<&Constellation_Diagram::Properties::phase_offset_radians>(0.25)
            .build(root, horizontal, vertical);
    });
    ASSERT_TRUE(constellation);
    EXPECT_EQ(constellation->get<&Constellation_Diagram::Properties::i_range>(), (Range{-2.0, 2.0}));
    EXPECT_EQ(constellation->get<&Constellation_Diagram::Properties::q_range>(), (Range{-3.0, 3.0}));
    EXPECT_EQ(constellation->get<&Constellation_Diagram::Properties::point_color>(), (Color{80, 220, 255, 255}));
    EXPECT_EQ(constellation->get<&Constellation_Diagram::Properties::anchor_color>(), (Color{255, 180, 40, 255}));
    EXPECT_EQ(constellation->get<&Constellation_Diagram::Properties::point_lifetime_ms>(), 2000);
    constellation->append_point({0.5, -0.5});
    constellation->append_point({-0.5, 0.5});
    EXPECT_EQ(constellation->point_count(), 2U);
    constellation->fit_square_to_axes();
    EXPECT_EQ(horizontal->get<&Axis_Properties::coordinates>(), (Range{-3.0, 3.0}));
    EXPECT_EQ(vertical->get<&Axis_Properties::coordinates>(), (Range{3.0, -3.0}));
    EXPECT_TRUE(plot.render_frame(true));
}
TEST(Renderive_Core2, PlottablePropertiesPublishOnlyAtFrameBoundary) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    const auto [frequency, power, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .build(root);
        auto value = Spectrum::Builder{&attach}.build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, value};
    });
    ASSERT_TRUE(spectrum);
    EXPECT_EQ(spectrum->observation().event,
              Renderable_Observer_Event::None);
    spectrum->set<&Spectrum::Properties::frequency_point_size>(128);
    EXPECT_EQ(spectrum->get<&Spectrum::Properties::frequency_point_size>(), 128);
    const auto cached = spectrum->observation();
    EXPECT_EQ(cached.event, Renderable_Observer_Event::Cache_Updated);
    EXPECT_EQ(cached.cache_update_count, 1U);
    EXPECT_EQ(cached.publish_count, 0U);
    ASSERT_TRUE(plot.prepare_frame());
    const auto published = spectrum->observation();
    EXPECT_EQ(published.event, Renderable_Observer_Event::Published);
    EXPECT_EQ(published.cache_update_count, 1U);
    EXPECT_EQ(published.publish_count, 1U);
    ASSERT_TRUE(plot.render_prepared_frame());
}
TEST(Renderive_Core2, EveryStatefulRenderableOwnsItsStateObserver) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    const auto [frequency, power, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .build(root);
        auto value = Spectrum::Builder{&attach}.build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, value};
    });
    ASSERT_TRUE(frequency);
    ASSERT_TRUE(power);
    ASSERT_TRUE(spectrum);

    EXPECT_EQ(frequency->observation().event, Renderable_Observer_Event::None);
    EXPECT_EQ(power->observation().event, Renderable_Observer_Event::None);
    EXPECT_EQ(spectrum->observation().event, Renderable_Observer_Event::None);

    frequency->set<&Axis_Properties::coordinates>(Range{88'000'000.0, 108'000'000.0});
    spectrum->set<&Spectrum::Properties::partition_count>(2);
    const auto frequency_update = frequency->observation();
    const auto spectrum_update = spectrum->observation();
    EXPECT_EQ(frequency_update.event, Renderable_Observer_Event::Cache_Updated);
    EXPECT_EQ(frequency_update.cache_update_count, 1U);
    EXPECT_EQ(spectrum_update.event, Renderable_Observer_Event::Cache_Updated);
    EXPECT_EQ(spectrum_update.cache_update_count, 1U);
    EXPECT_EQ(power->observation().event, Renderable_Observer_Event::None);

    ASSERT_TRUE(plot.prepare_frame());
    const auto frequency_publish = frequency->observation();
    const auto power_publish = power->observation();
    const auto spectrum_publish = spectrum->observation();
    EXPECT_EQ(frequency_publish.event, Renderable_Observer_Event::Published);
    EXPECT_EQ(power_publish.event, Renderable_Observer_Event::Published);
    EXPECT_EQ(spectrum_publish.event, Renderable_Observer_Event::Published);
    EXPECT_EQ(frequency_publish.publish_count, 1U);
    EXPECT_EQ(power_publish.publish_count, 1U);
    EXPECT_EQ(spectrum_publish.publish_count, 1U);
    EXPECT_EQ(frequency_publish.cache_update_count, 1U);
    EXPECT_EQ(power_publish.cache_update_count, 0U);
    EXPECT_EQ(spectrum_publish.cache_update_count, 1U);

    ASSERT_TRUE(plot.render_prepared_frame());
    EXPECT_EQ(frequency->observation().event, Renderable_Observer_Event::Published);
    EXPECT_EQ(power->observation().event, Renderable_Observer_Event::Published);
    EXPECT_EQ(spectrum->observation().event, Renderable_Observer_Event::Published);
}
TEST(Renderive_Core2, PlottableDataUpdatesReachKernelRealTimeDataStrategy) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    const auto [frequency, power, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .build(root);
        auto value = Spectrum::Builder{&attach}.build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, value};
    });
    const auto afterglow = build_initial(plot, [&](auto& attach) {
        return Afterglow::Builder{&attach}.build(root, frequency, power);
    });
    ASSERT_TRUE(spectrum);
    ASSERT_TRUE(afterglow);
    const auto before = plot.frame_status().observation_count;
    const std::array samples{-80.0, -70.0, -60.0, -50.0};
    spectrum->update_samples(samples);
    const auto latest = plot.frame_status();
    EXPECT_EQ(latest.last_event, "real_time_data_updated");
    EXPECT_GT(latest.observation_count, before);
    afterglow->append_spectrum(samples);
    const auto history = plot.frame_status();
    EXPECT_EQ(history.last_event, "real_time_data_updated");
    EXPECT_GT(history.observation_count, latest.observation_count);
}
TEST(Renderive_Core2, AxisRasterLayoutCoversAxisSwapAndEveryReversal) {
    constexpr Range first_source{0.0, 2.0};
    constexpr Range second_source{0.0, 3.0};
    for (const bool swapped : {false, true}) {
        for (const bool first_reversed : {false, true}) {
            for (const bool second_reversed : {false, true}) {
                const Axis_Transform first{
                    first_reversed ? Range{2.0, 0.0} : Range{0.0, 2.0},
                    swapped ? 20.0 : 10.0, swapped ? 30.0 : 20.0,
                    swapped ? Orientation::Vertical : Orientation::Horizontal};
                const Axis_Transform second{
                    second_reversed ? Range{3.0, 0.0} : Range{0.0, 3.0},
                    swapped ? 10.0 : 20.0, swapped ? 20.0 : 30.0,
                    swapped ? Orientation::Horizontal : Orientation::Vertical};
                const auto layout = detail::axis_raster_layout(
                    first, second, first_source, second_source, 3, 4);
                ASSERT_TRUE(layout.valid());
                EXPECT_EQ(layout.width, swapped ? 4 : 3);
                EXPECT_EQ(layout.height, swapped ? 3 : 4);
                const std::size_t origin = layout.index(0, 0, 3, 4);
                const int x = static_cast<int>(origin % layout.width);
                const int y = static_cast<int>(origin / layout.width);
                EXPECT_EQ(x, swapped ? (second_reversed ? 3 : 0)
                                     : (first_reversed ? 2 : 0));
                EXPECT_EQ(y, swapped ? (first_reversed ? 2 : 0)
                                     : (second_reversed ? 3 : 0));
            }
        }
    }

    const std::array<double, 2> values{1.0, 3.0};
    const Axis_Transform vertical_frequency{{0.0, 1.0}, 10.0, 20.0,
                                            Orientation::Vertical};
    const Axis_Transform horizontal_power{{0.0, 4.0}, 100.0, 40.0,
                                          Orientation::Horizontal};
    const auto points = detail::curve_points(
        values, {0.0, 1.0}, vertical_frequency, horizontal_power, false,
        Line_Interpolation_Mode::Linear_Value);
    ASSERT_EQ(points.size(), 2u);
    EXPECT_DOUBLE_EQ(points.front().x, 110.0);
    EXPECT_DOUBLE_EQ(points.front().y, 10.0);
    EXPECT_DOUBLE_EQ(points.back().x, 130.0);
    EXPECT_DOUBLE_EQ(points.back().y, 30.0);
}
TEST(Renderive_Core2, PartitionedPlotsBuildPropertyDrivenRenderGraphs) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({320, 180});
    const auto root = plot.root_renderable();
    const auto [frequency, power, time, spectrum, waterfall, afterglow] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .set<&Frequency_Axis::Properties::pixel_length>(320)
                                  .set<&Frequency_Axis::Properties::coordinates>(Range{0.0, 10.0})
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .set<&Axis::Properties::pixel_length>(180)
                              .set<&Axis::Properties::coordinates>(Range{-120.0, 0.0})
                              .build(root);
        auto time_axis = Time_Axis::Builder{&attach}
                             .set<&Time_Axis::Properties::orientation>(Orientation::Vertical)
                             .set<&Time_Axis::Properties::pixel_length>(180)
                             .build(root);
        auto spectrum_value = Spectrum::Builder{&attach}
                                  .set<&Spectrum::Properties::partition_mode>(Render_Partition_Mode::Fixed)
                                  .set<&Spectrum::Properties::partition_count>(4)
                                  .build(root, frequency_axis, power_axis);
        auto waterfall_value = Waterfall::Builder{&attach}
                                   .set<&Waterfall::Properties::partition_mode>(Render_Partition_Mode::Fixed)
                                   .set<&Waterfall::Properties::partition_count>(4)
                                   .build(root, frequency_axis, time_axis);
        auto afterglow_value = Afterglow::Builder{&attach}
                                   .set<&Afterglow::Properties::partition_mode>(Render_Partition_Mode::Fixed)
                                   .set<&Afterglow::Properties::partition_count>(4)
                                   .build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, time_axis, spectrum_value, waterfall_value, afterglow_value};
    });
    std::array<double, 1024> samples{};
    spectrum->update_samples(samples);
    waterfall->append_row(0, samples);
    afterglow->append_spectrum(samples);
    plot.render_scene().publish_frame_state();

    const auto planned_node_count = [](const Render_Plan& plan,
                                       const Renderable_Base& renderable) {
        return std::count_if(plan.graph.nodes.begin(), plan.graph.nodes.end(),
            [&](const Render_Node& node) {
                return node.owner_id == renderable.renderable_id() &&
                       node.kind != Render_Node_Kind::composite;
            });
    };

    EXPECT_EQ(spectrum->get<&Spectrum::Properties::partition_count>(), 4);
    EXPECT_EQ(waterfall->get<&Waterfall::Properties::partition_count>(), 4);
    EXPECT_EQ(afterglow->get<&Afterglow::Properties::partition_count>(), 4);
    ASSERT_TRUE(plot.render_frame(true));
    const auto partitioned_plan = plot.render_scene().render_plan_snapshot();
    ASSERT_TRUE(partitioned_plan);
    EXPECT_EQ(planned_node_count(*partitioned_plan, *spectrum), 6u);
    EXPECT_EQ(std::count_if(
                  partitioned_plan->graph.nodes.begin(),
                  partitioned_plan->graph.nodes.end(),
                  [&](const Render_Node& node) {
                      return node.owner_id == spectrum->renderable_id() &&
                             node.kind == Render_Node_Kind::paint;
                  }),
              1);
    EXPECT_EQ(planned_node_count(*partitioned_plan, *waterfall), 6u);
    EXPECT_EQ(planned_node_count(*partitioned_plan, *afterglow), 11u);

    spectrum->set<&Spectrum::Properties::partition_count>(1);
    waterfall->set<&Waterfall::Properties::partition_count>(1);
    afterglow->set<&Afterglow::Properties::partition_count>(1);
    plot.render_scene().publish_frame_state();
    ASSERT_TRUE(plot.render_frame(true));
    const auto single_plan = plot.render_scene().render_plan_snapshot();
    ASSERT_TRUE(single_plan);
    EXPECT_EQ(planned_node_count(*single_plan, *spectrum), 3u);
    EXPECT_EQ(planned_node_count(*single_plan, *waterfall), 3u);
    EXPECT_EQ(planned_node_count(*single_plan, *afterglow), 5u);

    spectrum->set<&Spectrum::Properties::partition_mode>(Render_Partition_Mode::Automatic);
    waterfall->set<&Waterfall::Properties::partition_mode>(Render_Partition_Mode::Automatic);
    afterglow->set<&Afterglow::Properties::partition_mode>(Render_Partition_Mode::Automatic);
    plot.render_scene().publish_frame_state();
    ASSERT_TRUE(plot.render_frame(true));
    const auto automatic_plan = plot.render_scene().render_plan_snapshot();
    ASSERT_TRUE(automatic_plan);
    EXPECT_EQ(planned_node_count(*automatic_plan, *spectrum), 3u);
    EXPECT_EQ(planned_node_count(*automatic_plan, *waterfall), 3u);
    EXPECT_EQ(planned_node_count(*automatic_plan, *afterglow), 5u);
}

TEST(Renderive_Core2, AutomaticPartitioningSplitsOnlyForMeasuredBottlenecks) {
    detail::Adaptive_Render_Partitioner partitioner;
    EXPECT_EQ(partitioner.graph_partition_count(
                  Render_Partition_Mode::Automatic, 8, 8, 4096, 128),
              1);
    EXPECT_EQ(partitioner.begin(1, 4096), 1);
    std::this_thread::sleep_for(std::chrono::milliseconds(2));
    EXPECT_TRUE(partitioner.finish(Render_Partition_Mode::Automatic, 1, 0,
                                   8, 4096, 128));
    EXPECT_EQ(partitioner.graph_partition_count(
                  Render_Partition_Mode::Automatic, 8, 8, 4096, 128),
              2);

    EXPECT_EQ(partitioner.begin(2, 4096), 2);
    EXPECT_TRUE(partitioner.finish(Render_Partition_Mode::Automatic, 2, 0,
                                   8, 4096, 128));
    EXPECT_EQ(partitioner.graph_partition_count(
                  Render_Partition_Mode::Automatic, 8, 8, 4096, 128),
              1);
    EXPECT_EQ(partitioner.graph_partition_count(
                  Render_Partition_Mode::Fixed, 7, 2, 1, 4096),
              1);
    EXPECT_EQ(partitioner.graph_partition_count(
                  Render_Partition_Mode::Fixed, 7, 2, 0, 4096),
              0);
    EXPECT_EQ(partitioner.begin(7, 0), 0);
}

TEST(Renderive_Core2, DynamicWaterfallCaptureStressPreservesPlansSlotsAndExactSessions) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({640, 360});
    const auto root = plot.root_renderable();
    const auto [frequency, time, waterfall] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .set<&Frequency_Axis::Properties::pixel_length>(640)
                                  .set<&Frequency_Axis::Properties::coordinates>(Range{0.0, 32'767.0})
                                  .build(root);
        auto time_axis = Time_Axis::Builder{&attach}
                             .set<&Time_Axis::Properties::orientation>(Orientation::Vertical)
                             .set<&Time_Axis::Properties::pixel_length>(360)
                             .build(root);
        auto value = Waterfall::Builder{&attach}
                         .set<&Waterfall::Properties::partition_mode>(Render_Partition_Mode::Fixed)
                         .set<&Waterfall::Properties::partition_count>(64)
                         .set<&Waterfall::Properties::frequency_range>(Range{0.0, 32'767.0})
                         .build(root, frequency_axis, time_axis);
        return std::tuple{frequency_axis, time_axis, value};
    });
    std::array<double, 32'768> samples{};
    for (std::size_t index = 0; index < samples.size(); ++index)
        samples[index] = static_cast<double>(index % 256);
    waterfall->append_row(0, samples);
    auto& scene = plot;
    constexpr std::array partition_counts{64, 16, 1};
    std::uint64_t tick{1};
    for (std::size_t round = 0; round < 3; ++round) {
        const Capture_Session_Id session_id = scene.render_scene().capture_frames(8);
        for (std::size_t frame = 0; frame < 8; ++frame) {
            if (frame % 2 == 0) {
                waterfall->set<&Waterfall::Properties::partition_count>(
                    partition_counts[(round + frame / 2) % partition_counts.size()]);
            }
            if (frame % 4 == 0)
                waterfall->append_row(static_cast<int>(tick++), samples);
            ASSERT_TRUE(plot.render_frame(true));
        }
        const auto session = scene.render_scene().capture_session(session_id);
        ASSERT_TRUE(session);
        ASSERT_EQ(session->captured_count(), 8u);
        EXPECT_FALSE(session->active());
        std::set<Render_Plan_Version> versions;
        for (const auto& captured : session->frames) {
            ASSERT_TRUE(captured.snapshot);
            const auto plan = scene.render_scene().find_render_plan(
                captured.snapshot->render_plan_version);
            ASSERT_TRUE(plan);
            EXPECT_EQ(captured.snapshot->node_executions.size(),
                      plan->graph.nodes.size());
            for (const auto& execution : captured.snapshot->node_executions)
                EXPECT_EQ(execution.status, Node_Execution_Status::complete);
            versions.insert(captured.snapshot->render_plan_version);
        }
        EXPECT_GE(versions.size(), 3u);
        EXPECT_FALSE(scene.render_scene().capture_state().enabled());
    }
}

TEST(Renderive_Core2, PaintOnlyStyleChangesPreservePrepareCache) {
    Plot_Scene plot;
    plot.init();
    plot.set_viewport_size({320, 180});
    const auto root = plot.root_renderable();
    const auto [frequency, power, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .build(root);
        auto value = Spectrum::Builder{&attach}.build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, value};
    });
    const std::array samples{-80.0, -70.0, -60.0, -50.0};
    spectrum->update_samples(samples);
    ASSERT_TRUE(plot.render_frame(true));
    ASSERT_TRUE(plot.render_frame(true));
    const auto cached_plan = plot.render_scene().render_plan_snapshot();
    ASSERT_TRUE(cached_plan);
    const auto cached_has_kind = [&](Render_Node_Kind kind) {
        return std::any_of(cached_plan->graph.nodes.begin(),
                           cached_plan->graph.nodes.end(),
            [&](const Render_Node& node) {
                return node.owner_id == spectrum->renderable_id() &&
                       node.kind == kind;
            });
    };
    EXPECT_FALSE(cached_has_kind(Render_Node_Kind::prepare));
    EXPECT_FALSE(cached_has_kind(Render_Node_Kind::paint));
    spectrum->set<&Spectrum::Properties::current_pen>(
        Pen{Color{12, 34, 56, 255}, 2.0});

    ASSERT_TRUE(plot.render_frame(true));
    const auto plan = plot.render_scene().render_plan_snapshot();
    ASSERT_TRUE(plan);
    const auto has_kind = [&](Render_Node_Kind kind) {
        return std::any_of(plan->graph.nodes.begin(), plan->graph.nodes.end(),
            [&](const Render_Node& node) {
                return node.owner_id == spectrum->renderable_id() && node.kind == kind;
            });
    };
    EXPECT_FALSE(has_kind(Render_Node_Kind::prepare));
    EXPECT_TRUE(has_kind(Render_Node_Kind::paint));

    frequency->set<&Axis_Base_Properties::color>(Color{90, 100, 110, 255});
    ASSERT_TRUE(plot.render_frame(true));
    const auto axis_style_plan = plot.render_scene().render_plan_snapshot();
    ASSERT_TRUE(axis_style_plan);
    EXPECT_FALSE(std::any_of(axis_style_plan->graph.nodes.begin(),
                             axis_style_plan->graph.nodes.end(),
        [&](const Render_Node& node) {
            return node.owner_id == spectrum->renderable_id() &&
                   node.kind == Render_Node_Kind::prepare;
        }));
}
TEST(Renderive_Core2, PlottableAxesAreDataDependenciesAndPaintOverlays) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    const auto [frequency, power, spectrum] = build_initial(plot, [&](auto& attach) {
        auto frequency_axis = Frequency_Axis::Builder{&attach}
                                  .set<&Frequency_Axis::Properties::orientation>(Orientation::Horizontal)
                                  .build(root);
        auto power_axis = Axis::Builder{&attach}
                              .set<&Axis::Properties::orientation>(Orientation::Vertical)
                              .build(root);
        auto value = Spectrum::Builder{&attach}.build(root, frequency_axis, power_axis);
        return std::tuple{frequency_axis, power_axis, value};
    });
    ASSERT_TRUE(spectrum);
    const auto topology = plot.render_scene().topology_snapshot();
    const auto has_relationship = [](const auto& relationships, const auto* child, const auto* parent) {
        return std::any_of(relationships.begin(), relationships.end(), [child, parent](const auto& relationship) {
            return relationship.child.get() == child && relationship.parent.get() == parent;
        });
    };
    EXPECT_TRUE(has_relationship(topology.dependency, spectrum.get(), frequency.get()));
    EXPECT_TRUE(has_relationship(topology.dependency, spectrum.get(), power.get()));
    EXPECT_TRUE(has_relationship(topology.display, frequency.get(), spectrum.get()));
    EXPECT_TRUE(has_relationship(topology.display, power.get(), spectrum.get()));
    const auto paint_order = plot.render_scene().paint_order_snapshot();
    const auto spectrum_position = std::find_if(paint_order.begin(), paint_order.end(), [&spectrum](const auto& renderable) {
        return renderable.get() == spectrum.get();
    });
    const auto frequency_position = std::find_if(paint_order.begin(), paint_order.end(), [&frequency](const auto& renderable) {
        return renderable.get() == frequency.get();
    });
    const auto power_position = std::find_if(paint_order.begin(), paint_order.end(), [&power](const auto& renderable) {
        return renderable.get() == power.get();
    });
    ASSERT_NE(spectrum_position, paint_order.end());
    ASSERT_NE(frequency_position, paint_order.end());
    ASSERT_NE(power_position, paint_order.end());
    EXPECT_LT(spectrum_position, frequency_position);
    EXPECT_LT(spectrum_position, power_position);
}
TEST(Renderive_Core2, InteractionOverlayPaintsAboveItsAxes) {
    Plot_Scene plot;
    plot.init();
    const auto root = plot.root_renderable();
    const auto [horizontal, vertical, selection] = build_initial(plot, [&](auto& attach) {
        auto horizontal_axis = Axis::Builder{&attach}
                                   .set<&Axis::Properties::orientation>(Orientation::Horizontal)
                                   .build(root);
        auto vertical_axis = Axis::Builder{&attach}
                                 .set<&Axis::Properties::orientation>(Orientation::Vertical)
                                 .build(root);
        auto value = Selection_Rectangle_Overlay::Builder{&attach}.build(root, horizontal_axis, vertical_axis);
        return std::tuple{horizontal_axis, vertical_axis, value};
    });
    ASSERT_TRUE(selection);
    const auto paint_order = plot.render_scene().paint_order_snapshot();
    const auto position = [&paint_order](const auto* target) {
        return std::find_if(paint_order.begin(), paint_order.end(), [target](const auto& renderable) {
            return renderable.get() == target;
        });
    };
    const auto selection_position = position(selection.get());
    const auto horizontal_position = position(horizontal.get());
    const auto vertical_position = position(vertical.get());
    ASSERT_NE(selection_position, paint_order.end());
    ASSERT_NE(horizontal_position, paint_order.end());
    ASSERT_NE(vertical_position, paint_order.end());
    EXPECT_LT(horizontal_position, selection_position);
    EXPECT_LT(vertical_position, selection_position);
}
} // namespace
} // namespace renderive