◆ done()

SeriesSpec MayaFlux::Portal::Forma::Plot::FilledWaveformBuilder::done ( ) const
Definition at line 434 of file SeriesBuilder.cpp.
{
    auto x_mappings = m_state.x_mappings();
    auto y_mappings = m_state.y_mappings();
    const auto global_palette = m_state.palette();
    const float baseline_data = m_baseline;
 
    return {
        .fn = [x_mappings, y_mappings, global_palette, baseline_data](
                  const std::shared_ptr<Kakshya::PlotContainer>& container,
                  std::vector<uint8_t>& out,
                  Element&) mutable {
            if (!container)
                return;
 
            container->process_default();
 
            struct SeriesEntry {
                std::span<const double> data;
                size_t mapping_index;
                size_t index_within_mapping;
            };
            std::vector<SeriesEntry> y_entries;
            for (size_t mi = 0; mi < y_mappings.size(); ++mi) {
                auto sv = series_for_mapping(*container, y_mappings[mi]);
                for (size_t si = 0; si < sv.size(); ++si)
                    y_entries.push_back({ .data = sv[si], .mapping_index = mi, .index_within_mapping = si });
            }
            if (y_entries.empty())
                return;
 
            AxisRange x_range = merge_axis(x_mappings);
            AxisRange y_range = merge_axis(y_mappings);
 
            std::vector<std::span<const double>> all_y;
            all_y.reserve(y_entries.size());
            for (const auto& e : y_entries)
                all_y.push_back(e.data);
            apply_auto_scale(y_range, all_y);
 
            std::vector<std::span<const double>> all_x;
            if (!x_mappings.empty()) {
                all_x = series_for_mapping(*container, x_mappings[0]);
                apply_auto_scale(x_range, all_x);
            } else {
                x_range = AxisRange {}.range(-1.F, 1.F);
            }
 
            const float baseline_ndc = y_range.to_ndc(baseline_data);
 
            out.clear();
 
            for (size_t ei = 0; ei < y_entries.size(); ++ei) {
                const auto& entry = y_entries[ei];
                const size_t n    = entry.data.size();
                if (n == 0)
                    continue;
 
                const glm::vec3 color = resolve_color(
                    y_mappings[entry.mapping_index], global_palette, entry.index_within_mapping);
 
                const size_t x_idx = std::min(ei, all_x.empty() ? size_t(0) : all_x.size() - 1);
                const bool has_x   = !all_x.empty() && all_x[x_idx].size() == n;
 
                const size_t pre_size = out.size();
 
                for (size_t i = 0; i < n; ++i) {
                    const float px = has_x
                        ? x_range.to_ndc(static_cast<float>(all_x[x_idx][i]))
                        : x_range.to_ndc(x_range.min
                              + static_cast<float>(i) / static_cast<float>(std::max<size_t>(n - 1, 1))
                                  * (x_range.max - x_range.min));
 
                    const float py = y_range.to_ndc(static_cast<float>(entry.data[i]));
 
                    write_vertex(out, { px, py,          0.F }, color, 1.F);
                    write_vertex(out, { px, baseline_ndc, 0.F }, color, 0.F);
                }
 
                if (ei + 1 < y_entries.size() && out.size() > pre_size) {
                    const size_t last = out.size() - k_stride;
                    out.insert(out.end(), out.begin() + static_cast<ptrdiff_t>(last), out.end());
                }
            } },
        .topology = Graphics::PrimitiveTopology::TRIANGLE_STRIP,
        .capacity_for = [](uint64_t n) { return n * 2 * k_stride + 128; },
        .background_fn = m_state.has_background()
            ? std::optional<GeometryFn<float>> { background(
                  m_state.background_bounds(), m_state.background_color()) }
            : std::nullopt,
        .plot_bounds = m_state.plot_bounds(),
        .labels = m_state.labels(),
        .tick_labels = m_state.resolved_tick_labels(),
        .legend = m_state.legend_spec(),
    };
}
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