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#pragma once
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#include <string>
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#include <vector>
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#include "imgui.h"
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#include "imgui_internal.h"
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namespace ImGui {
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static ImU32 InvertColorU32(ImU32 in)
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{
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ImVec4 in4 = ColorConvertU32ToFloat4(in);
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in4.x = 1.f - in4.x;
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in4.y = 1.f - in4.y;
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in4.z = 1.f - in4.z;
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return GetColorU32(in4);
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}
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static ImVec2 add(const ImVec2& a, const ImVec2& b){
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return ImVec2(a.x+b.x, a.y+b.y);
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}
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static ImVec2 subtract(const ImVec2& a, const ImVec2& b){
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return ImVec2(a.x-b.x, a.y-b.y);
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}
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static void PlotMultiLines(
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const std::vector<std::vector<float>> &data,
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std::string title,
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const std::vector<std::string> &labels,
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const std::vector<ImColor> &colors,
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float maximum_scale,
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float minimum_scale,
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sf::Vector2f graph_size
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){
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int values_count = data.at(0).size();
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems)
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return;
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ImGuiContext& g = *GImGui;
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const ImGuiStyle& style = g.Style;
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const ImVec2 label_size = ImGui::CalcTextSize(title.c_str(), NULL, true);
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if (graph_size.x == 0.0f)
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graph_size.x = CalcItemWidth();
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if (graph_size.y == 0.0f)
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graph_size.y = label_size.y + (style.FramePadding.y * 2);
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const ImRect frame_bb(window->DC.CursorPos,
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add(window->DC.CursorPos, graph_size));
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const ImRect inner_bb(add(frame_bb.Min,style.FramePadding),
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subtract(frame_bb.Max , style.FramePadding));
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ImVec2 thing = ImVec2(label_size.x > 0.0f ?
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style.ItemInnerSpacing.x + label_size.x : 0.0f,
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0);
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const ImRect total_bb(frame_bb.Min, add(frame_bb.Max , thing));
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ItemSize(total_bb, style.FramePadding.y);
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if (!ItemAdd(total_bb, 0))
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return;
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RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg),
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true, style.FrameRounding);
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int res_w = ImMin((int) graph_size.x, values_count );
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int item_count = values_count;
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int text_margin = 10;
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for (int data_idx = 0; data_idx < data.size(); ++data_idx)
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{
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const float t_step = 1.0f / (float) res_w;
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float v0 = data.at(data_idx).at(0);
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float t0 = 0.0f;
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ImVec2 tp0 = ImVec2(t0,
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1.0f - ImSaturate((v0 - minimum_scale) / (maximum_scale - minimum_scale))); // Point in the normalized space of our target rectangle
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const ImU32 col_base = colors.at(data_idx);
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const ImU32 col_hovered = InvertColorU32(colors.at(data_idx));
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for (int n = 0; n < res_w; n++)
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{
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const float t1 = t0 + t_step;
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const int v1_idx = (int) (t0 * item_count + 0.5f);
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IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
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const float v1 = data.at(data_idx).at(v1_idx);
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const ImVec2 tp1 = ImVec2(t1,
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1.0f - ImSaturate((v1 - minimum_scale) / (maximum_scale - minimum_scale)));
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// NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
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ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
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ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, tp1);//ImVec2(tp1.x, 1.0f));
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window->DrawList->AddLine(pos0, pos1, col_base);
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t0 = t1;
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tp0 = tp1;
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}
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// Render the text label
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ImGui::PushStyleColor(ImGuiCol_Text, (ImVec4)colors.at(data_idx));
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RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y + text_margin * data_idx), labels.at(data_idx).c_str());
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ImGui::PopStyleColor(1);
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}
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RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Max.y), title.c_str());
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}
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static void PlotMultiEx(
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ImGuiPlotType plot_type,
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const char* label,
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int num_datas,
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const char** names,
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const ImColor* colors,
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float(*getter)(const void* data, int idx),
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const void * const * datas,
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int values_count,
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float scale_min,
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float scale_max,
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ImVec2 graph_size){
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const int values_offset = 0;
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems)
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return;
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ImGuiContext& g = *GImGui;
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const ImGuiStyle& style = g.Style;
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const ImVec2 label_size = ImGui::CalcTextSize(label, NULL, true);
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if (graph_size.x == 0.0f)
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graph_size.x = CalcItemWidth();
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if (graph_size.y == 0.0f)
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graph_size.y = label_size.y + (style.FramePadding.y * 2);
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const ImRect frame_bb(window->DC.CursorPos, add(window->DC.CursorPos, graph_size));
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const ImRect inner_bb(add(frame_bb.Min,style.FramePadding), subtract(frame_bb.Max , style.FramePadding));
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ImVec2 thing = ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0);
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const ImRect total_bb(frame_bb.Min, add(frame_bb.Max , thing));
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ItemSize(total_bb, style.FramePadding.y);
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if (!ItemAdd(total_bb, 0))
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return;
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// Determine scale from values if not specified
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if (scale_min == FLT_MAX || scale_max == FLT_MAX)
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{
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float v_min = FLT_MAX;
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float v_max = -FLT_MAX;
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for (int data_idx = 0; data_idx < num_datas; ++data_idx)
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{
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for (int i = 0; i < values_count; i++)
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{
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const float v = getter(datas[data_idx], i);
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v_min = ImMin(v_min, v);
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v_max = ImMax(v_max, v);
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}
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}
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if (scale_min == FLT_MAX)
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scale_min = v_min;
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if (scale_max == FLT_MAX)
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scale_max = v_max;
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}
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RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
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int res_w = ImMin((int) graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
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int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
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// Tooltip on hover
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// int v_hovered = -1;
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// if (IsHovered(inner_bb, 0))
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// {
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// const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
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// const int v_idx = (int) (t * item_count);
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// IM_ASSERT(v_idx >= 0 && v_idx < values_count);
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//
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// // std::string toolTip;
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// ImGui::BeginTooltip();
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// const int idx0 = (v_idx + values_offset) % values_count;
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// if (plot_type == ImGuiPlotType_Lines)
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// {
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// const int idx1 = (v_idx + 1 + values_offset) % values_count;
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// Text("%8d %8d | Name", v_idx, v_idx+1);
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// for (int dataIdx = 0; dataIdx < num_datas; ++dataIdx)
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// {
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// const float v0 = getter(datas[dataIdx], idx0);
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// const float v1 = getter(datas[dataIdx], idx1);
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// TextColored(colors[dataIdx], "%8.4g %8.4g | %s", v0, v1, names[dataIdx]);
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// }
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// }
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// else if (plot_type == ImGuiPlotType_Histogram)
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// {
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// for (int dataIdx = 0; dataIdx < num_datas; ++dataIdx)
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// {
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// const float v0 = getter(datas[dataIdx], idx0);
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// TextColored(colors[dataIdx], "%d: %8.4g | %s", v_idx, v0, names[dataIdx]);
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// }
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// }
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// ImGui::EndTooltip();
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// v_hovered = v_idx;
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// }
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for (int data_idx = 0; data_idx < num_datas; ++data_idx)
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{
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const float t_step = 1.0f / (float) res_w;
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float v0 = getter(datas[data_idx], (0 + values_offset) % values_count);
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float t0 = 0.0f;
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ImVec2 tp0 = ImVec2(t0, 1.0f - ImSaturate((v0 - scale_min) / (scale_max - scale_min))); // Point in the normalized space of our target rectangle
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const ImU32 col_base = colors[data_idx];
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const ImU32 col_hovered = InvertColorU32(colors[data_idx]);
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//const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
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//const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
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for (int n = 0; n < res_w; n++)
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{
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const float t1 = t0 + t_step;
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const int v1_idx = (int) (t0 * item_count + 0.5f);
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IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
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const float v1 = getter(datas[data_idx], (v1_idx + values_offset + 1) % values_count);
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const ImVec2 tp1 = ImVec2(t1, 1.0f - ImSaturate((v1 - scale_min) / (scale_max - scale_min)));
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// NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
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ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
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ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, 1.0f));
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if (plot_type == ImGuiPlotType_Lines)
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{
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window->DrawList->AddLine(pos0, pos1, col_base);
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}
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else if (plot_type == ImGuiPlotType_Histogram)
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{
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if (pos1.x >= pos0.x + 2.0f)
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pos1.x -= 1.0f;
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window->DrawList->AddRectFilled(pos0, pos1, col_base);
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}
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t0 = t1;
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tp0 = tp1;
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}
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}
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RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
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}
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inline void PlotMultiLines(
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const char* label,
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int num_datas,
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const char** names,
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const ImColor* colors,
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float(*getter)(const void* data, int idx),
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const void * const * datas,
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int values_count,
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float scale_min,
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float scale_max,
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ImVec2 graph_size)
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{
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PlotMultiEx(ImGuiPlotType_Lines, label, num_datas, names, colors, getter, datas, values_count, scale_min, scale_max, graph_size);
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}
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inline void PlotMultiHistograms(
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const char* label,
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int num_hists,
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const char** names,
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const ImColor* colors,
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float(*getter)(const void* data, int idx),
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const void * const * datas,
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int values_count,
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float scale_min,
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float scale_max,
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ImVec2 graph_size)
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{
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PlotMultiEx(ImGuiPlotType_Histogram, label, num_hists, names, colors, getter, datas, values_count, scale_min, scale_max, graph_size);
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}
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} // namespace ImGui
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