Function PlotBarGroups

Source/3rdParty/implot/implot_items.cpp:2453–2531

template <typename T>
void PlotBarGroups(const char* const label_ids[], const T* values, int item_count, int group_count, double group_size, double shift, const ImPlotSpec& spec) {
    IndexerIdx<T> indexer(values,item_count*group_count,spec.Offset,Stride<T>(spec));
    const bool horz = ImHasFlag(spec.Flags, ImPlotBarGroupsFlags_Horizontal);
    const bool stack = ImHasFlag(spec.Flags, ImPlotBarGroupsFlags_Stacked);
    ImPlotSpec spec_bars = spec;
    spec_bars.Flags = 0;
    if (stack) {
        SetupLock();
        ImPlotContext& gp = *GImPlot;
        gp.TempDouble1.resize(4*group_count);
        double* temp = gp.TempDouble1.Data;
        double* neg =      &temp[0];
        double* pos =      &temp[group_count];
        double* curr_min = &temp[group_count*2];
        double* curr_max = &temp[group_count*3];
        for (int g = 0; g < group_count*2; ++g)
            temp[g] = 0;
        if (horz) {
            for (int i = 0; i < item_count; ++i) {
                if (!IsItemHidden(label_ids[i])) {
                    for (int g = 0; g < group_count; ++g) {
                        double v = indexer[i*group_count+g];
                        if (v > 0) {
                            curr_min[g] = pos[g];
                            curr_max[g] = curr_min[g] + v;
                            pos[g]      += v;
                        }
                        else {
                            curr_max[g] = neg[g];
                            curr_min[g] = curr_max[g] + v;
                            neg[g]      += v;
                        }
                    }
                }
                GetterXY<IndexerIdx<double>,IndexerLin> getter1(IndexerIdx<double>(curr_min,group_count),IndexerLin(1.0,shift),group_count);
                GetterXY<IndexerIdx<double>,IndexerLin> getter2(IndexerIdx<double>(curr_max,group_count),IndexerLin(1.0,shift),group_count);
                PlotBarsHEx(label_ids[i],getter1,getter2,group_size,spec_bars);
            }
        }
        else {
            for (int i = 0; i < item_count; ++i) {
                if (!IsItemHidden(label_ids[i])) {
                    for (int g = 0; g < group_count; ++g) {
                        double v = indexer[i*group_count+g];
                        if (v > 0) {
                            curr_min[g] = pos[g];
                            curr_max[g] = curr_min[g] + v;
                            pos[g]      += v;
                        }
                        else {
                            curr_max[g] = neg[g];
                            curr_min[g] = curr_max[g] + v;
                            neg[g]      += v;
                        }
                    }
                }
                GetterXY<IndexerLin,IndexerIdx<double>> getter1(IndexerLin(1.0,shift),IndexerIdx<double>(curr_min,group_count),group_count);
                GetterXY<IndexerLin,IndexerIdx<double>> getter2(IndexerLin(1.0,shift),IndexerIdx<double>(curr_max,group_count),group_count);