text: // MIT License
  
  // Copyright (c) 2020 Evan Pezent
  
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  
  // ImPlot v0.9 WIP
  
  #include "implot.h"
  #include <math.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <time.h>
  #include <iostream>
  
  #ifdef _MSC_VER
  #define sprintf sprintf_s
  #endif
  
  #ifndef PI
  #define PI 3.14159265358979323846
  #endif
  
  // Encapsulates examples for customizing ImPlot.
  namespace MyImPlot {
  
  // Example for Custom Data and Getters section.
  struct Vector2f {
      Vector2f(float _x, float _y) { x = _x; y = _y; }
      float x, y;
  };
  
  // Example for Custom Data and Getters section.
  struct WaveData {
      double X, Amp, Freq, Offset;
      WaveData(double x, double amp, double freq, double offset) { X = x; Amp = amp; Freq = freq; Offset = offset; }
  };
  ImPlotPoint SineWave(void* wave_data, int idx);
  ImPlotPoint SawWave(void* wave_data, int idx);
  ImPlotPoint Spiral(void*, int idx);
  
  // Example for Tables section.
  void Sparkline(const char* id, const float* values, int count, float min_v, float max_v, int offset, const ImVec4& col, const ImVec2& size);
  
  // Example for Custom Plotters and Tooltips section.
  void PlotCandlestick(const char* label_id, const double* xs, const double* opens, const double* closes, const double* lows, const double* highs, int count, bool tooltip = true, float width_percent = 0.25f, ImVec4 bullCol = ImVec4(0,1,0,1), ImVec4 bearCol = ImVec4(1,0,0,1));
  
  // Example for Custom Styles section.
  void StyleSeaborn();
  
  } // namespace MyImPlot
  
  namespace ImPlot {
  
  void ShowBenchmarkTool();
  
  template <typename T>
  inline T RandomRange(T min, T max) {
      T scale = rand() / (T) RAND_MAX;
      return min + scale * ( max - min );
  }
  
  // utility structure for realtime plot
  struct ScrollingBuffer {
      int MaxSize;
      int Offset;
      ImVector<ImVec2> Data;
      ScrollingBuffer(int max_size = 2000) {
          MaxSize = max_size;
          Offset  = 0;
          Data.reserve(MaxSize);
      }
      void AddPoint(float x, float y) {
          if (Data.size() < MaxSize)
              Data.push_back(ImVec2(x,y));
          else {
              Data[Offset] = ImVec2(x,y);
              Offset =  (Offset + 1) % MaxSize;
          }
      }
      void Erase() {
          if (Data.size() > 0) {
              Data.shrink(0);
              Offset  = 0;
          }
      }
  };
  
  // utility structure for realtime plot
  struct RollingBuffer {
      float Span;
      ImVector<ImVec2> Data;
      RollingBuffer() {
          Span = 10.0f;
          Data.reserve(2000);
      }
      void AddPoint(float x, float y) {
          float xmod = fmodf(x, Span);
          if (!Data.empty() && xmod < Data.back().x)
              Data.shrink(0);
          Data.push_back(ImVec2(xmod, y));
      }
  };
  
  // Huge data used by Time Formatting example (~500 MB allocation!)
  struct HugeTimeData {
      HugeTimeData(double min) {
          Ts = new double[Size];
          Ys = new double[Size];
          for (int i = 0; i < Size; ++i) {
              Ts[i] = min + i;
              Ys[i] = GetY(Ts[i]);
          }
      }
      ~HugeTimeData() { delete[] Ts;  delete[] Ys; }
      static double GetY(double t) {
          return 0.5 + 0.25 * sin(t/86400/12) +  0.005 * sin(t/3600);
      }
      double* Ts;
      double* Ys;
      static const int Size = 60*60*24*366;
  };
  
  void ShowDemoWindow(bool* p_open) {
      double DEMO_TIME = ImGui::GetTime();
      static bool show_imgui_metrics       = false;
      static bool show_implot_metrics      = false;
      static bool show_imgui_style_editor  = false;
      static bool show_implot_style_editor = false;
      static bool show_implot_benchmark    = false;
      if (show_imgui_metrics) {
          ImGui::ShowMetricsWindow(&show_imgui_metrics);
      }
      if (show_implot_metrics) {
          ImPlot::ShowMetricsWindow(&show_implot_metrics);
      }
      if (show_imgui_style_editor) {
          ImGui::Begin("Style Editor (ImGui)", &show_imgui_style_editor);
          ImGui::ShowStyleEditor();
          ImGui::End();
      }
      if (show_implot_style_editor) {
          ImGui::SetNextWindowSize(ImVec2(415,762), ImGuiCond_Appearing);
          ImGui::Begin("Style Editor (ImPlot)", &show_implot_style_editor);
          ImPlot::ShowStyleEditor();
          ImGui::End();
      }
      if (show_implot_benchmark) {
          ImGui::SetNextWindowSize(ImVec2(530,740), ImGuiCond_Appearing);
          ImGui::Begin("ImPlot Benchmark Tool", &show_implot_benchmark);
          ImPlot::ShowBenchmarkTool();
          ImGui::End();
          return;
      }
      ImGui::SetNextWindowPos(ImVec2(50, 50), ImGuiCond_FirstUseEver);
      ImGui::SetNextWindowSize(ImVec2(600, 750), ImGuiCond_FirstUseEver);
      ImGui::Begin("ImPlot Demo", p_open, ImGuiWindowFlags_MenuBar);
      if (ImGui::BeginMenuBar()) {
          if (ImGui::BeginMenu("Tools")) {
              ImGui::MenuItem("Metrics (ImGui)",       NULL, &show_imgui_metrics);
              ImGui::MenuItem("Metrics (ImPlot)",      NULL, &show_implot_metrics);
              ImGui::MenuItem("Style Editor (ImGui)",  NULL, &show_imgui_style_editor);
              ImGui::MenuItem("Style Editor (ImPlot)", NULL, &show_implot_style_editor);
              ImGui::MenuItem("Benchmark",             NULL, &show_implot_benchmark);
              ImGui::EndMenu();
          }
          ImGui::EndMenuBar();
      }
      //-------------------------------------------------------------------------
      ImGui::Text("ImPlot says hello. (%s)", IMPLOT_VERSION);
      ImGui::Spacing();
  
      if (ImGui::CollapsingHeader("Help")) {
          ImGui::Text("ABOUT THIS DEMO:");
          ImGui::BulletText("Sections below are demonstrating many aspects of the library.");
          ImGui::BulletText("The \"Tools\" menu above gives access to: Style Editors (ImPlot/ImGui)\n"
                            "and Metrics (general purpose Dear ImGui debugging tool).");
          ImGui::Separator();
          ImGui::Text("PROGRAMMER GUIDE:");
          ImGui::BulletText("See the ShowDemoWindow() code in implot_demo.cpp. <- you are here!");
          ImGui::BulletText("By default, anti-aliased lines are turned OFF.");
          ImGui::Indent();
              ImGui::BulletText("Software AA can be enabled globally with ImPlotStyle.AntiAliasedLines.");
              ImGui::BulletText("Software AA can be enabled per plot with ImPlotFlags_AntiAliased.");
              ImGui::BulletText("AA for plots can be toggled from the plot's context menu.");
              ImGui::BulletText("If permitable, you are better off using hardware AA (e.g. MSAA).");
          ImGui::Unindent();
          ImGui::BulletText("If you see visual artifacts, do one of the following:");
          ImGui::Indent();
          ImGui::BulletText("Handle ImGuiBackendFlags_RendererHasVtxOffset for 16-bit indices in your backend.");
          ImGui::BulletText("Or, enable 32-bit indices in imconfig.h.");
          ImGui::BulletText("Your current configuration is:");
          ImGui::Indent();
          ImGui::BulletText("ImDrawIdx: %d-bit", (int)(sizeof(ImDrawIdx) * 8));
          ImGui::BulletText("ImGuiBackendFlags_RendererHasVtxOffset: %s", (ImGui::GetIO().BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset) ? "True" : "False");
          ImGui::Unindent();
          ImGui::Unindent();
  #ifdef IMPLOT_DEMO_USE_DOUBLE
          ImGui::BulletText("The demo data precision is: double");
  #else
          ImGui::BulletText("The demo data precision is: float");
  #endif
          ImGui::Separator();
          ImGui::Text("USER GUIDE:");
          ShowUserGuide();
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Configuration")) {
          ImGui::ShowFontSelector("Font");
          ImGui::ShowStyleSelector("ImGui Style");
          ImPlot::ShowStyleSelector("ImPlot Style");
          ImPlot::ShowColormapSelector("ImPlot Colormap");
          float indent = ImGui::CalcItemWidth() - ImGui::GetFrameHeight();
          ImGui::Indent(ImGui::CalcItemWidth() - ImGui::GetFrameHeight());
          ImGui::Checkbox("Anti-Aliased Lines", &ImPlot::GetStyle().AntiAliasedLines);
          ImGui::Unindent(indent);
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Line Plots")) {
          static float xs1[1001], ys1[1001];
          for (int i = 0; i < 1001; ++i) {
              xs1[i] = i * 0.001f;
              ys1[i] = 0.5f + 0.5f * sinf(50 * (xs1[i] + (float)DEMO_TIME / 10));
          }
          static double xs2[11], ys2[11];
          for (int i = 0; i < 11; ++i) {
              xs2[i] = i * 0.1f;
              ys2[i] = xs2[i] * xs2[i];
          }
          ImGui::BulletText("Anti-aliasing can be enabled from the plot's context menu (see Help).");
          if (ImPlot::BeginPlot("Line Plot", "x", "f(x)")) {
              ImPlot::PlotLine("sin(x)", xs1, ys1, 1001);
              ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle);
              ImPlot::PlotLine("x^2", xs2, ys2, 11);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Filled Line Plots")) {
          static double xs1[101], ys1[101], ys2[101], ys3[101];
          srand(0);
          for (int i = 0; i < 101; ++i) {
              xs1[i] = (float)i;
              ys1[i] = RandomRange(400.0,450.0);
              ys2[i] = RandomRange(275.0,350.0);
              ys3[i] = RandomRange(150.0,225.0);
          }
          static bool show_lines = true;
          static bool show_fills = true;
          static float fill_ref = 0;
          static int shade_mode = 0;
          ImGui::Checkbox("Lines",&show_lines); ImGui::SameLine();
          ImGui::Checkbox("Fills",&show_fills);
          if (show_fills) {
              ImGui::SameLine();
              if (ImGui::RadioButton("To -INF",shade_mode == 0))
                  shade_mode = 0;
              ImGui::SameLine();
              if (ImGui::RadioButton("To +INF",shade_mode == 1))
                  shade_mode = 1;
              ImGui::SameLine();
              if (ImGui::RadioButton("To Ref",shade_mode == 2))
                  shade_mode = 2;
              if (shade_mode == 2) {
                  ImGui::SameLine();
                  ImGui::SetNextItemWidth(100);
                  ImGui::DragFloat("##Ref",&fill_ref, 1, -100, 500);
              }
          }
  
  
          ImPlot::SetNextPlotLimits(0,100,0,500);
          if (ImPlot::BeginPlot("Stock Prices", "Days", "Price")) {
              if (show_fills) {
                  ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
                  ImPlot::PlotShaded("Stock 1", xs1, ys1, 101, shade_mode == 0 ? -INFINITY : shade_mode == 1 ? INFINITY : fill_ref);
                  ImPlot::PlotShaded("Stock 2", xs1, ys2, 101, shade_mode == 0 ? -INFINITY : shade_mode == 1 ? INFINITY : fill_ref);
                  ImPlot::PlotShaded("Stock 3", xs1, ys3, 101, shade_mode == 0 ? -INFINITY : shade_mode == 1 ? INFINITY : fill_ref);
                  ImPlot::PopStyleVar();
              }
              if (show_lines) {
                  ImPlot::PlotLine("Stock 1", xs1, ys1, 101);
                  ImPlot::PlotLine("Stock 2", xs1, ys2, 101);
                  ImPlot::PlotLine("Stock 3", xs1, ys3, 101);
              }
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Shaded Plots##")) {
          static float xs[1001], ys[1001], ys1[1001], ys2[1001], ys3[1001], ys4[1001];
          srand(0);
          for (int i = 0; i < 1001; ++i) {
              xs[i]  = i * 0.001f;
              ys[i]  = 0.25f + 0.25f * sinf(25 * xs[i]) * sinf(5 * xs[i]) + RandomRange(-0.01f, 0.01f);
              ys1[i] = ys[i] + RandomRange(0.1f, 0.12f);
              ys2[i] = ys[i] - RandomRange(0.1f, 0.12f);
              ys3[i] = 0.75f + 0.2f * sinf(25 * xs[i]);
              ys4[i] = 0.75f + 0.1f * cosf(25 * xs[i]);
          }
          static float alpha = 0.25f;
          ImGui::DragFloat("Alpha",&alpha,0.01f,0,1);
  
          if (ImPlot::BeginPlot("Shaded Plots", "X-Axis", "Y-Axis")) {
              ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, alpha);
              ImPlot::PlotShaded("Uncertain Data",xs,ys1,ys2,1001);
              ImPlot::PlotLine("Uncertain Data", xs, ys, 1001);
              ImPlot::PlotShaded("Overlapping",xs,ys3,ys4,1001);
              ImPlot::PlotLine("Overlapping",xs,ys3,1001);
              ImPlot::PlotLine("Overlapping",xs,ys4,1001);
              ImPlot::PopStyleVar();
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Scatter Plots")) {
          srand(0);
          static float xs1[100], ys1[100];
          for (int i = 0; i < 100; ++i) {
              xs1[i] = i * 0.01f;
              ys1[i] = xs1[i] + 0.1f * ((float)rand() / (float)RAND_MAX);
          }
          static float xs2[50], ys2[50];
          for (int i = 0; i < 50; i++) {
              xs2[i] = 0.25f + 0.2f * ((float)rand() / (float)RAND_MAX);
              ys2[i] = 0.75f + 0.2f * ((float)rand() / (float)RAND_MAX);
          }
  
          if (ImPlot::BeginPlot("Scatter Plot", NULL, NULL)) {
              ImPlot::PlotScatter("Data 1", xs1, ys1, 100);
              ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
              ImPlot::SetNextMarkerStyle(ImPlotMarker_Square, 6, ImVec4(0,1,0,0.5f), IMPLOT_AUTO, ImVec4(0,1,0,1));
              ImPlot::PlotScatter("Data 2", xs2, ys2, 50);
              ImPlot::PopStyleVar();
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Stairstep Plots")) {
          static float ys1[101], ys2[101];
          for (int i = 0; i < 101; ++i) {
              ys1[i] = 0.5f + 0.4f * sinf(50 * i * 0.01f);
              ys2[i] = 0.5f + 0.2f * sinf(25 * i * 0.01f);
          }
          if (ImPlot::BeginPlot("Stairstep Plot", "x", "f(x)")) {
              ImPlot::PlotStairs("Signal 1", ys1, 101, 0.01f);
              ImPlot::SetNextMarkerStyle(ImPlotMarker_Square, 2.0f);
              ImPlot::PlotStairs("Signal 2", ys2, 101, 0.01f);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Bar Plots")) {
  
          static bool horz                = false;
          static ImS8  midtm[10]          = {83, 67, 23, 89, 83, 78, 91, 82, 85, 90};
          static ImS16 final[10]          = {80, 62, 56, 99, 55, 78, 88, 78, 90, 100};
          static ImS32 grade[10]          = {80, 69, 52, 92, 72, 78, 75, 76, 89, 95};
  
          static const char*  labels[]    = {"S1","S2","S3","S4","S5","S6","S7","S8","S9","S10"};
          static const double positions[] = {0,1,2,3,4,5,6,7,8,9};
  
          ImGui::Checkbox("Horizontal",&horz);
  
          if (horz) {
              ImPlot::SetNextPlotLimits(0, 110, -0.5, 9.5, ImGuiCond_Always);
              ImPlot::SetNextPlotTicksY(positions, 10, labels);
          }
          else {
              ImPlot::SetNextPlotLimits(-0.5, 9.5, 0, 110, ImGuiCond_Always);
              ImPlot::SetNextPlotTicksX(positions, 10, labels);
          }
          if (ImPlot::BeginPlot("Bar Plot", horz ? "Score" :  "Student", horz ? "Student" : "Score",
                                ImVec2(-1,0), 0, 0, horz ? ImPlotAxisFlags_Invert : 0))
          {
              if (horz) {
                  ImPlot::SetLegendLocation(ImPlotLocation_West, ImPlotOrientation_Vertical);
                  ImPlot::PlotBarsH("Midterm Exam", midtm, 10, 0.2, -0.2);
                  ImPlot::PlotBarsH("Final Exam",   final, 10, 0.2,    0);
                  ImPlot::PlotBarsH("Course Grade", grade, 10, 0.2,  0.2);
              }
              else {
                  ImPlot::SetLegendLocation(ImPlotLocation_South, ImPlotOrientation_Horizontal);
                  ImPlot::PlotBars("Midterm Exam", midtm, 10, 0.2, -0.2);
                  ImPlot::PlotBars("Final Exam",   final, 10, 0.2,    0);
                  ImPlot::PlotBars("Course Grade", grade, 10, 0.2,  0.2);
              }
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Error Bars")) {
          static float xs[5]    = {1,2,3,4,5};
          static float bar[5]   = {1,2,5,3,4};
          static float lin1[5]  = {8,8,9,7,8};
          static float lin2[5]  = {6,7,6,9,6};
          static float err1[5]  = {0.2f, 0.4f, 0.2f, 0.6f, 0.4f};
          static float err2[5]  = {0.4f, 0.2f, 0.4f, 0.8f, 0.6f};
          static float err3[5]  = {0.09f, 0.14f, 0.09f, 0.12f, 0.16f};
          static float err4[5]  = {0.02f, 0.08f, 0.15f, 0.05f, 0.2f};
  
  
          ImPlot::SetNextPlotLimits(0, 6, 0, 10);
          if (ImPlot::BeginPlot("##ErrorBars",NULL,NULL)) {
  
              ImPlot::PlotBars("Bar", xs, bar, 5, 0.5f);
              ImPlot::PlotErrorBars("Bar", xs, bar, err1, 5);
  
              ImPlot::SetNextErrorBarStyle(ImPlot::GetColormapColor(1), 0);
              ImPlot::PlotErrorBars("Line", xs, lin1, err1, err2, 5);
              ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle);
              ImPlot::PlotLine("Line", xs, lin1, 5);
  
              ImPlot::PushStyleColor(ImPlotCol_ErrorBar, ImPlot::GetColormapColor(2));
              ImPlot::PlotErrorBars("Scatter", xs, lin2, err2, 5);
              ImPlot::PlotErrorBarsH("Scatter", xs, lin2,  err3, err4, 5);
              ImPlot::PopStyleColor();
              ImPlot::PlotScatter("Scatter", xs, lin2, 5);
  
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Stem Plots##")) {
          static double xs[51], ys1[51], ys2[51];
          for (int i = 0; i < 51; ++i) {
              xs[i] = i * 0.02;
              ys1[i] = 1.0 + 0.5 * sin(25*xs[i])*cos(2*xs[i]);
              ys2[i] = 0.5 + 0.25  * sin(10*xs[i]) * sin(xs[i]);
          }
          ImPlot::SetNextPlotLimits(0,1,0,1.6);
          if (ImPlot::BeginPlot("Stem Plots")) {
  
              ImPlot::PlotStems("Stems 1",xs,ys1,51);
  
              ImPlot::SetNextLineStyle(ImVec4(1,0.5f,0,0.75f));
              ImPlot::SetNextMarkerStyle(ImPlotMarker_Square,5,ImVec4(1,0.5f,0,0.25f));
              ImPlot::PlotStems("Stems 2", xs, ys2,51);
  
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Infinite Lines")) {
          static double vals[] = {0.25, 0.5, 0.75};
          if (ImPlot::BeginPlot("##Infinite")) {
              ImPlot::PlotVLines("VLines",vals,3);
              ImPlot::PlotHLines("HLines",vals,3);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Pie Charts")) {
          static const char* labels1[]   = {"Frogs","Hogs","Dogs","Logs"};
          static float data1[]           = {0.15f,  0.30f,  0.2f, 0.05f};
          static bool normalize          = false;
          ImGui::SetNextItemWidth(250);
          ImGui::DragFloat4("Values", data1, 0.01f, 0, 1);
          if ((data1[0] + data1[1] + data1[2] + data1[3]) < 1) {
              ImGui::SameLine();
              ImGui::Checkbox("Normalize", &normalize);
          }
  
          ImPlot::SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
          if (ImPlot::BeginPlot("##Pie1", NULL, NULL, ImVec2(250,250), ImPlotFlags_Equal | ImPlotFlags_NoMousePos, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
              ImPlot::PlotPieChart(labels1, data1, 4, 0.5, 0.5, 0.4, normalize, "%.2f");
              ImPlot::EndPlot();
          }
  
          ImGui::SameLine();
  
          static const char* labels2[]   = {"A","B","C","D","E"};
          static int data2[]             = {1,1,2,3,5};
  
          ImPlot::PushColormap(ImPlotColormap_Pastel);
          ImPlot::SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
          if (ImPlot::BeginPlot("##Pie2", NULL, NULL, ImVec2(250,250), ImPlotFlags_Equal | ImPlotFlags_NoMousePos, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
              ImPlot::PlotPieChart(labels2, data2, 5, 0.5, 0.5, 0.4, true, "%.0f", 180);
              ImPlot::EndPlot();
          }
          ImPlot::PopColormap();
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Heatmaps")) {
          static float values1[7][7]  = {{0.8f, 2.4f, 2.5f, 3.9f, 0.0f, 4.0f, 0.0f},
                                         {2.4f, 0.0f, 4.0f, 1.0f, 2.7f, 0.0f, 0.0f},
                                         {1.1f, 2.4f, 0.8f, 4.3f, 1.9f, 4.4f, 0.0f},
                                         {0.6f, 0.0f, 0.3f, 0.0f, 3.1f, 0.0f, 0.0f},
                                         {0.7f, 1.7f, 0.6f, 2.6f, 2.2f, 6.2f, 0.0f},
                                         {1.3f, 1.2f, 0.0f, 0.0f, 0.0f, 3.2f, 5.1f},
                                         {0.1f, 2.0f, 0.0f, 1.4f, 0.0f, 1.9f, 6.3f}};
          static float scale_min       = 0;
          static float scale_max       = 6.3f;
          static const char* xlabels[] = {"C1","C2","C3","C4","C5","C6","C7"};
          static const char* ylabels[] = {"R1","R2","R3","R4","R5","R6","R7"};
  
          static ImPlotColormap map = ImPlotColormap_Viridis;
          if (ImGui::Button("Change Colormap",ImVec2(225,0)))
              map = (map + 1) % ImPlotColormap_COUNT;
  
          ImGui::SameLine();
          ImGui::LabelText("##Colormap Index", "%s", ImPlot::GetColormapName(map));
          ImGui::SetNextItemWidth(225);
          ImGui::DragFloatRange2("Min / Max",&scale_min, &scale_max, 0.01f, -20, 20);
          static ImPlotAxisFlags axes_flags = ImPlotAxisFlags_Lock | ImPlotAxisFlags_NoGridLines | ImPlotAxisFlags_NoTickMarks;
  
          ImPlot::PushColormap(map);
          SetNextPlotTicksX(0 + 1.0/14.0, 1 - 1.0/14.0, 7, xlabels);
          SetNextPlotTicksY(1 - 1.0/14.0, 0 + 1.0/14.0, 7, ylabels);
          if (ImPlot::BeginPlot("##Heatmap1",NULL,NULL,ImVec2(225,225),ImPlotFlags_NoLegend|ImPlotFlags_NoMousePos,axes_flags,axes_flags)) {
              ImPlot::PlotHeatmap("heat",values1[0],7,7,scale_min,scale_max);
              ImPlot::EndPlot();
          }
          ImGui::SameLine();
          ImPlot::ShowColormapScale(scale_min, scale_max, ImVec2(60,225));
          ImPlot::PopColormap();
  
          ImGui::SameLine();
  
          static double values2[100*100];
          srand((unsigned int)(DEMO_TIME*1000000));
          for (int i = 0; i < 100*100; ++i)
              values2[i] = RandomRange(0.0,1.0);
  
          static ImVec4 gray[2] = {ImVec4(0,0,0,1), ImVec4(1,1,1,1)};
          ImPlot::PushColormap(gray, 2);
          ImPlot::SetNextPlotLimits(-1,1,-1,1);
          if (ImPlot::BeginPlot("##Heatmap2",NULL,NULL,ImVec2(225,225),0,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations)) {
              ImPlot::PlotHeatmap("heat1",values2,100,100,0,1,NULL);
              ImPlot::PlotHeatmap("heat2",values2,100,100,0,1,NULL, ImPlotPoint(-1,-1), ImPlotPoint(0,0));
              ImPlot::EndPlot();
          }
          ImPlot::PopColormap();
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Images")) {
          ImGui::BulletText("Below we are displaying the font texture, which is the only texture we have\naccess to in this demo.");
          ImGui::BulletText("Use the 'ImTextureID' type as storage to pass pointers or identifiers to your\nown texture data.");
          ImGui::BulletText("See ImGui Wiki page 'Image Loading and Displaying Examples'.");
          static ImVec2 bmin(0,0);
          static ImVec2 bmax(1,1);
          static ImVec2 uv0(0,0);
          static ImVec2 uv1(1,1);
          static ImVec4 tint(1,1,1,1);
          ImGui::SliderFloat2("Min", &bmin.x, -2, 2, "%.1f");
          ImGui::SliderFloat2("Max", &bmax.x, -2, 2, "%.1f");
          ImGui::SliderFloat2("UV0", &uv0.x, -2, 2, "%.1f");
          ImGui::SliderFloat2("UV1", &uv1.x, -2, 2, "%.1f");
          ImGui::ColorEdit4("Tint",&tint.x);
          if (ImPlot::BeginPlot("##image")) {
              ImPlot::PlotImage("my image",ImGui::GetIO().Fonts->TexID, bmin, bmax, uv0, uv1, tint);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Realtime Plots")) {
          ImGui::BulletText("Move your mouse to change the data!");
          ImGui::BulletText("This example assumes 60 FPS. Higher FPS requires larger buffer size.");
          static ScrollingBuffer sdata1, sdata2;
          static RollingBuffer   rdata1, rdata2;
          ImVec2 mouse = ImGui::GetMousePos();
          static float t = 0;
          t += ImGui::GetIO().DeltaTime;
          sdata1.AddPoint(t, mouse.x * 0.0005f);
          rdata1.AddPoint(t, mouse.x * 0.0005f);
          sdata2.AddPoint(t, mouse.y * 0.0005f);
          rdata2.AddPoint(t, mouse.y * 0.0005f);
  
          static float history = 10.0f;
          ImGui::SliderFloat("History",&history,1,30,"%.1f s");
          rdata1.Span = history;
          rdata2.Span = history;
  
          static ImPlotAxisFlags rt_axis = ImPlotAxisFlags_NoTickLabels;
          ImPlot::SetNextPlotLimitsX(t - history, t, ImGuiCond_Always);
          if (ImPlot::BeginPlot("##Scrolling", NULL, NULL, ImVec2(-1,150), 0, rt_axis, rt_axis | ImPlotAxisFlags_LockMin)) {
              ImPlot::PlotShaded("Data 1", &sdata1.Data[0].x, &sdata1.Data[0].y, sdata1.Data.size(), 0, sdata1.Offset, 2 * sizeof(float));
              ImPlot::PlotLine("Data 2", &sdata2.Data[0].x, &sdata2.Data[0].y, sdata2.Data.size(), sdata2.Offset, 2*sizeof(float));
              ImPlot::EndPlot();
          }
          ImPlot::SetNextPlotLimitsX(0, history, ImGuiCond_Always);
          if (ImPlot::BeginPlot("##Rolling", NULL, NULL, ImVec2(-1,150), 0, rt_axis, rt_axis)) {
              ImPlot::PlotLine("Data 1", &rdata1.Data[0].x, &rdata1.Data[0].y, rdata1.Data.size(), 0, 2 * sizeof(float));
              ImPlot::PlotLine("Data 2", &rdata2.Data[0].x, &rdata2.Data[0].y, rdata2.Data.size(), 0, 2 * sizeof(float));
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Markers and Text")) {
          static float mk_size = ImPlot::GetStyle().MarkerSize;
          static float mk_weight = ImPlot::GetStyle().MarkerWeight;
          ImGui::DragFloat("Marker Size",&mk_size,0.1f,2.0f,10.0f,"%.2f px");
          ImGui::DragFloat("Marker Weight", &mk_weight,0.05f,0.5f,3.0f,"%.2f px");
  
          ImPlot::SetNextPlotLimits(0, 10, 0, 12);
          if (ImPlot::BeginPlot("##MarkerStyles", NULL, NULL, ImVec2(-1,0), ImPlotFlags_CanvasOnly, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
              ImS8 xs[2] = {1,4};
              ImS8 ys[2] = {10,11};
  
              // filled markers
              for (int m = 0; m < ImPlotMarker_COUNT; ++m) {
                  ImGui::PushID(m);
                  ImPlot::SetNextMarkerStyle(m, mk_size, IMPLOT_AUTO_COL, mk_weight);
                  ImPlot::PlotLine("##Filled", xs, ys, 2);
                  ImGui::PopID();
                  ys[0]--; ys[1]--;
              }
              xs[0] = 6; xs[1] = 9; ys[0] = 10; ys[1] = 11;
              // open markers
              for (int m = 0; m < ImPlotMarker_COUNT; ++m) {
                  ImGui::PushID(m);
                  ImPlot::SetNextMarkerStyle(m, mk_size, ImVec4(0,0,0,0), mk_weight);
                  ImPlot::PlotLine("##Open", xs, ys, 2);
                  ImGui::PopID();
                  ys[0]--; ys[1]--;
              }
  
              ImPlot::PlotText("Filled Markers", 2.5f, 6.0f);
              ImPlot::PlotText("Open Markers",   7.5f, 6.0f);
  
              ImPlot::PushStyleColor(ImPlotCol_InlayText, ImVec4(1,0,1,1));
              ImPlot::PlotText("Vertical Text", 5.0f, 6.0f, true);
              ImPlot::PopStyleColor();
  
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Log Scale")) {
          static double xs[1001], ys1[1001], ys2[1001], ys3[1001];
          for (int i = 0; i < 1001; ++i) {
              xs[i]  = i*0.1f;
              ys1[i] = sin(xs[i]) + 1;
              ys2[i] = log(xs[i]);
              ys3[i] = pow(10.0, xs[i]);
          }
          ImGui::BulletText("Open the plot context menu (double right click) to change scales.");
  
          ImPlot::SetNextPlotLimits(0.1, 100, 0, 10);
          if (ImPlot::BeginPlot("Log Plot", NULL, NULL, ImVec2(-1,0), 0, ImPlotAxisFlags_LogScale )) {
              ImPlot::PlotLine("f(x) = x",        xs, xs,  1001);
              ImPlot::PlotLine("f(x) = sin(x)+1", xs, ys1, 1001);
              ImPlot::PlotLine("f(x) = log(x)",   xs, ys2, 1001);
              ImPlot::PlotLine("f(x) = 10^x",     xs, ys3, 21);
              ImPlot::EndPlot();
          }
      }
      if (ImGui::CollapsingHeader("Time Formatted Axes")) {
  
          static double t_min = 1609459200; // 01/01/2021 @ 12:00:00am (UTC)
          static double t_max = 1640995200; // 01/01/2022 @ 12:00:00am (UTC)
  
          ImGui::BulletText("When ImPlotAxisFlags_Time is enabled on the X-Axis, values are interpreted as\n"
                            "UNIX timestamps in seconds and axis labels are formated as date/time.");
          ImGui::BulletText("By default, labels are in UTC time but can be set to use local time instead.");
  
          ImGui::Checkbox("Local Time",&ImPlot::GetStyle().UseLocalTime);
          ImGui::SameLine();
          ImGui::Checkbox("ISO 8601",&ImPlot::GetStyle().UseISO8601);
          ImGui::SameLine();
          ImGui::Checkbox("24 Hour Clock",&ImPlot::GetStyle().Use24HourClock);
  
          static HugeTimeData* data = NULL;
          if (data == NULL) {
              ImGui::SameLine();
              if (ImGui::Button("Generate Huge Data (~500MB!)")) {
                  static HugeTimeData sdata(t_min);
                  data = &sdata;
              }
          }
  
          ImPlot::SetNextPlotLimits(t_min,t_max,0,1);
          if (ImPlot::BeginPlot("##Time", NULL, NULL, ImVec2(-1,0), 0, ImPlotAxisFlags_Time)) {
              if (data != NULL) {
                  // downsample our data
                  int downsample = (int)ImPlot::GetPlotLimits().X.Size() / 1000 + 1;
                  int start = (int)(ImPlot::GetPlotLimits().X.Min - t_min);
                  start = start < 0 ? 0 : start > HugeTimeData::Size - 1 ? HugeTimeData::Size - 1 : start;
                  int end = (int)(ImPlot::GetPlotLimits().X.Max - t_min) + 1000;
                  end = end < 0 ? 0 : end > HugeTimeData::Size - 1 ? HugeTimeData::Size - 1 : end;
                  int size = (end - start)/downsample;
                  // plot it
                  ImPlot::PlotLine("Time Series", &data->Ts[start], &data->Ys[start], size, 0, sizeof(double)*downsample);
              }
              // plot time now
              double t_now = (double)time(0);
              double y_now = HugeTimeData::GetY(t_now);
              ImPlot::PlotScatter("Now",&t_now,&y_now,1);
              ImPlot::Annotate(t_now,y_now,ImVec2(10,10),ImPlot::GetLastItemColor(),"Now");
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Multiple Y-Axes")) {
          static float xs[1001], xs2[1001], ys1[1001], ys2[1001], ys3[1001];
          for (int i = 0; i < 1001; ++i) {
              xs[i]  = (i*0.1f);
              ys1[i] = sinf(xs[i]) * 3 + 1;
              ys2[i] = cosf(xs[i]) * 0.2f + 0.5f;
              ys3[i] = sinf(xs[i]+0.5f) * 100 + 200;
              xs2[i] = xs[i] + 10.0f;
          }
          static bool y2_axis = true;
          static bool y3_axis = true;
          ImGui::Checkbox("Y-Axis 2", &y2_axis);
          ImGui::SameLine();
          ImGui::Checkbox("Y-Axis 3", &y3_axis);
          ImGui::SameLine();
  
          // you can fit axes programatically
          ImGui::SameLine(); if (ImGui::Button("Fit X"))  ImPlot::FitNextPlotAxes(true, false, false, false);
          ImGui::SameLine(); if (ImGui::Button("Fit Y"))  ImPlot::FitNextPlotAxes(false, true, false, false);
          ImGui::SameLine(); if (ImGui::Button("Fit Y2")) ImPlot::FitNextPlotAxes(false, false, true, false);
          ImGui::SameLine(); if (ImGui::Button("Fit Y3")) ImPlot::FitNextPlotAxes(false, false, false, true);
  
          ImPlot::SetNextPlotLimits(0.1, 100, 0, 10);
          ImPlot::SetNextPlotLimitsY(0, 1, ImGuiCond_Once, 1);
          ImPlot::SetNextPlotLimitsY(0, 300, ImGuiCond_Once, 2);
          if (ImPlot::BeginPlot("Multi-Axis Plot", NULL, "Y-Axis 1", ImVec2(-1,0),
                               (y2_axis ? ImPlotFlags_YAxis2 : 0) |
                               (y3_axis ? ImPlotFlags_YAxis3 : 0),
                                ImPlotAxisFlags_None, ImPlotAxisFlags_None, ImPlotAxisFlags_NoGridLines, ImPlotAxisFlags_NoGridLines,
                                "Y-Axis 2", "Y-Axis 3")) {
              ImPlot::PlotLine("f(x) = x", xs, xs, 1001);
              ImPlot::PlotLine("f(x) = sin(x)*3+1", xs, ys1, 1001);
              if (y2_axis) {
                  ImPlot::SetPlotYAxis(ImPlotYAxis_2);
                  ImPlot::PlotLine("f(x) = cos(x)*.2+.5 (Y2)", xs, ys2, 1001);
              }
              if (y3_axis) {
                  ImPlot::SetPlotYAxis(ImPlotYAxis_3);
                  ImPlot::PlotLine("f(x) = sin(x+.5)*100+200 (Y3)", xs2, ys3, 1001);
              }
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Linked Axes")) {
          static double xmin = 0, xmax = 1, ymin = 0, ymax = 1;
          static bool linkx = true, linky = true;
          int data[2] = {0,1};
          ImGui::Checkbox("Link X", &linkx);
          ImGui::SameLine();
          ImGui::Checkbox("Link Y", &linky);
          ImPlot::LinkNextPlotLimits(linkx ? &xmin : NULL , linkx ? &xmax : NULL, linky ? &ymin : NULL, linky ? &ymax : NULL);
          if (ImPlot::BeginPlot("Plot A")) {
              ImPlot::PlotLine("Line",data,2);
              ImPlot::EndPlot();
          }
          ImPlot::LinkNextPlotLimits(linkx ? &xmin : NULL , linkx ? &xmax : NULL, linky ? &ymin : NULL, linky ? &ymax : NULL);
          if (ImPlot::BeginPlot("Plot B")) {
              ImPlot::PlotLine("Line",data,2);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Equal Axes")) {
          static double xs[1000], ys[1000];
          for (int i = 0; i < 1000; ++i) {
              double angle = i * 2 * PI / 999.0;
              xs[i] = cos(angle); ys[i] = sin(angle);
          }
          ImPlot::SetNextPlotLimits(-1,1,-1,1);
          if (ImPlot::BeginPlot("",0,0,ImVec2(-1,0),ImPlotFlags_Equal)) {
              ImPlot::PlotLine("Circle",xs,ys,1000);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Querying")) {
          static ImVector<ImPlotPoint> data;
          static ImPlotLimits range, query;
  
          ImGui::BulletText("Ctrl + click in the plot area to draw points.");
          ImGui::BulletText("Middle click (or Ctrl + right click) and drag to create a query rect.");
          ImGui::Indent();
              ImGui::BulletText("Hold Alt to expand query horizontally.");
              ImGui::BulletText("Hold Shift to expand query vertically.");
              ImGui::BulletText("The query rect can be dragged after it's created.");
          ImGui::Unindent();
  
          if (ImPlot::BeginPlot("##Drawing", NULL, NULL, ImVec2(-1,0), ImPlotFlags_Query, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
              if (ImPlot::IsPlotHovered() && ImGui::IsMouseClicked(0) && ImGui::GetIO().KeyCtrl) {
                  ImPlotPoint pt = ImPlot::GetPlotMousePos();
                  data.push_back(pt);
              }
              if (data.size() > 0)
                  ImPlot::PlotScatter("Points", &data[0].x, &data[0].y, data.size(), 0, 2 * sizeof(double));
              if (ImPlot::IsPlotQueried() && data.size() > 0) {
                  ImPlotLimits range2 = ImPlot::GetPlotQuery();
                  int cnt = 0;
                  ImPlotPoint avg;
                  for (int i = 0; i < data.size(); ++i) {
                      if (range2.Contains(data[i].x, data[i].y)) {
                          avg.x += data[i].x;
                          avg.y += data[i].y;
                          cnt++;
                      }
                  }
                  if (cnt > 0) {
                      avg.x = avg.x / cnt;
                      avg.y = avg.y / cnt;
                      ImPlot::SetNextMarkerStyle(ImPlotMarker_Square);
                      ImPlot::PlotScatter("Average", &avg.x, &avg.y, 1);
                  }
              }
              range = ImPlot::GetPlotLimits();
              query = ImPlot::GetPlotQuery();
              ImPlot::EndPlot();
          }
          ImGui::Text("The current plot limits are:  [%g,%g,%g,%g]", range.X.Min, range.X.Max, range.Y.Min, range.Y.Max);
          ImGui::Text("The current query limits are: [%g,%g,%g,%g]", query.X.Min, query.X.Max, query.Y.Min, query.Y.Max);
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Views")) {
          // mimic's soulthread's imgui_plot demo
          static float x_data[512];
          static float y_data1[512];
          static float y_data2[512];
          static float y_data3[512];
          static float sampling_freq = 44100;
          static float freq = 500;
          for (size_t i = 0; i < 512; ++i) {
              const float t = i / sampling_freq;
              x_data[i] = t;
              const float arg = 2 * 3.14f * freq * t;
              y_data1[i] = sinf(arg);
              y_data2[i] = y_data1[i] * -0.6f + sinf(2 * arg) * 0.4f;
              y_data3[i] = y_data2[i] * -0.6f + sinf(3 * arg) * 0.4f;
          }
          ImGui::BulletText("Query the first plot to render a subview in the second plot (see above for controls).");
          ImPlot::SetNextPlotLimits(0,0.01,-1,1);
          ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels;
          ImPlotLimits query;
          if (ImPlot::BeginPlot("##View1",NULL,NULL,ImVec2(-1,150), ImPlotFlags_Query, flags, flags)) {
              ImPlot::PlotLine("Signal 1", x_data, y_data1, 512);
              ImPlot::PlotLine("Signal 2", x_data, y_data2, 512);
              ImPlot::PlotLine("Signal 3", x_data, y_data3, 512);
              query = ImPlot::GetPlotQuery();
              ImPlot::EndPlot();
          }
          ImPlot::SetNextPlotLimits(query.X.Min, query.X.Max, query.Y.Min, query.Y.Max, ImGuiCond_Always);
          if (ImPlot::BeginPlot("##View2",NULL,NULL,ImVec2(-1,150), ImPlotFlags_CanvasOnly, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations)) {
              ImPlot::PlotLine("Signal 1", x_data, y_data1, 512);
              ImPlot::PlotLine("Signal 2", x_data, y_data2, 512);
              ImPlot::PlotLine("Signal 3", x_data, y_data3, 512);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Legend")) {
          static ImPlotLocation loc = ImPlotLocation_East;
          static bool h = false; static bool o = true;
          ImGui::CheckboxFlags("North", (unsigned int*)&loc, ImPlotLocation_North); ImGui::SameLine();
          ImGui::CheckboxFlags("South", (unsigned int*)&loc, ImPlotLocation_South); ImGui::SameLine();
          ImGui::CheckboxFlags("West",  (unsigned int*)&loc, ImPlotLocation_West);  ImGui::SameLine();
          ImGui::CheckboxFlags("East",  (unsigned int*)&loc, ImPlotLocation_East);  ImGui::SameLine();
          ImGui::Checkbox("Horizontal", &h); ImGui::SameLine();
          ImGui::Checkbox("Outside", &o);
  
          ImGui::SliderFloat2("LegendPadding", (float*)&GetStyle().LegendPadding, 0.0f, 20.0f, "%.0f");
          ImGui::SliderFloat2("LegendInnerPadding", (float*)&GetStyle().LegendInnerPadding, 0.0f, 10.0f, "%.0f");
          ImGui::SliderFloat2("LegendSpacing", (float*)&GetStyle().LegendSpacing, 0.0f, 5.0f, "%.0f");
  
          if (ImPlot::BeginPlot("##Legend","x","y",ImVec2(-1,0))) {
              ImPlot::SetLegendLocation(loc, h ? ImPlotOrientation_Horizontal : ImPlotOrientation_Vertical, o);
              static MyImPlot::WaveData data1(0.001, 0.2, 2, 0.75);
              static MyImPlot::WaveData data2(0.001, 0.2, 4, 0.25);
              static MyImPlot::WaveData data3(0.001, 0.2, 6, 0.5);
              ImPlot::PlotLineG("Item 1", MyImPlot::SineWave, &data1, 1000);         // "Item 1" added to legend
              ImPlot::PlotLineG("Item 2##IDText", MyImPlot::SawWave, &data2, 1000);  // "Item 2" added to legend, text after ## used for ID only
              ImPlot::PlotLineG("##NotListed", MyImPlot::SawWave, &data3, 1000);     // plotted, but not added to legend
              ImPlot::PlotLineG("Item 3", MyImPlot::SineWave, &data1, 1000);         // "Item 3" added to legend
              ImPlot::PlotLineG("Item 3", MyImPlot::SawWave,  &data2, 1000);         // combined with previous "Item 3"
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Drag Lines and Points")) {
          ImGui::BulletText("Click and drag the horizontal and vertical lines.");
          static double x1 = 0.2;
          static double x2 = 0.8;
          static double y1 = 0.25;
          static double y2 = 0.75;
          static double f = 0.1;
          static bool show_labels = true;
          ImGui::Checkbox("Show Labels##1",&show_labels);
          if (ImPlot::BeginPlot("##guides",0,0,ImVec2(-1,0),ImPlotFlags_YAxis2)) {
              ImPlot::DragLineX("x1",&x1,show_labels);
              ImPlot::DragLineX("x2",&x2,show_labels);
              ImPlot::DragLineY("y1",&y1,show_labels);
              ImPlot::DragLineY("y2",&y2,show_labels);
              double xs[1000], ys[1000];
              for (int i = 0; i < 1000; ++i) {
                  xs[i] = (x2+x1)/2+abs(x2-x1)*(i/1000.0f - 0.5f);
                  ys[i] = (y1+y2)/2+abs(y2-y1)/2*sin(f*i/10);
              }
              ImPlot::PlotLine("Interactive Data", xs, ys, 1000);
              ImPlot::SetPlotYAxis(ImPlotYAxis_2);
              ImPlot::DragLineY("f",&f,show_labels,ImVec4(1,0.5f,1,1));
              ImPlot::EndPlot();
          }
          ImGui::BulletText("Click and drag any point.");
          ImGui::Checkbox("Show Labels##2",&show_labels);
          ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels | ImPlotAxisFlags_NoTickMarks;
          if (ImPlot::BeginPlot("##Bezier",0,0,ImVec2(-1,0),ImPlotFlags_CanvasOnly,flags,flags)) {
              static ImPlotPoint P[] = {ImPlotPoint(.05f,.05f), ImPlotPoint(0.2,0.4),  ImPlotPoint(0.8,0.6),  ImPlotPoint(.95f,.95f)};
              static ImPlotPoint B[100];
              for (int i = 0; i < 100; ++i) {
                  double t  = i / 99.0;
                  double u  = 1 - t;
                  double w1 = u*u*u;
                  double w2 = 3*u*u*t;
                  double w3 = 3*u*t*t;
                  double w4 = t*t*t;
                  B[i] = ImPlotPoint(w1*P[0].x + w2*P[1].x + w3*P[2].x + w4*P[3].x, w1*P[0].y + w2*P[1].y + w3*P[2].y + w4*P[3].y);
              }
              ImPlot::SetNextLineStyle(ImVec4(0,0.9f,0,1), 2);
              ImPlot::PlotLine("##bez",&B[0].x, &B[0].y, 100, 0, sizeof(ImPlotPoint));
              ImPlot::SetNextLineStyle(ImVec4(1,0.5f,1,1));
              ImPlot::PlotLine("##h1",&P[0].x, &P[0].y, 2, 0, sizeof(ImPlotPoint));
              ImPlot::SetNextLineStyle(ImVec4(0,0.5f,1,1));
              ImPlot::PlotLine("##h2",&P[2].x, &P[2].y, 2, 0, sizeof(ImPlotPoint));
              ImPlot::DragPoint("P0",&P[0].x,&P[0].y, show_labels, ImVec4(0,0.9f,0,1));
              ImPlot::DragPoint("P1",&P[1].x,&P[1].y, show_labels, ImVec4(1,0.5f,1,1));
              ImPlot::DragPoint("P2",&P[2].x,&P[2].y, show_labels, ImVec4(0,0.5f,1,1));
              ImPlot::DragPoint("P3",&P[3].x,&P[3].y, show_labels, ImVec4(0,0.9f,0,1));
              ImPlot::EndPlot();
          }
      }
      if (ImGui::CollapsingHeader("Annotations")) {
          static bool clamp = false;
          ImGui::Checkbox("Clamp",&clamp);
          ImPlot::SetNextPlotLimits(0,2,0,1);
          if (ImPlot::BeginPlot("##Annotations")) {
  
              static float p[] = {0.25f, 0.25f, 0.75f, 0.75f, 0.25f};
              ImPlot::PlotScatter("##Points",&p[0],&p[1],4);
              ImVec4 col = GetLastItemColor();
              clamp ? ImPlot::AnnotateClamped(0.25,0.25,ImVec2(-15,15),col,"BL") : ImPlot::Annotate(0.25,0.25,ImVec2(-15,15),col,"BL");
              clamp ? ImPlot::AnnotateClamped(0.75,0.25,ImVec2(15,15),col,"BR") : ImPlot::Annotate(0.75,0.25,ImVec2(15,15),col,"BR");
              clamp ? ImPlot::AnnotateClamped(0.75,0.75,ImVec2(15,-15),col,"TR") : ImPlot::Annotate(0.75,0.75,ImVec2(15,-15),col,"TR");
              clamp ? ImPlot::AnnotateClamped(0.25,0.75,ImVec2(-15,-15),col,"TL") : ImPlot::Annotate(0.25,0.75,ImVec2(-15,-15),col,"TL");
              clamp ? ImPlot::AnnotateClamped(0.5,0.5,ImVec2(0,0),col,"Center") : ImPlot::Annotate(0.5,0.5,ImVec2(0,0),col,"Center");
  
              float bx[] = {1.2f,1.5f,1.8f};
              float by[] = {0.25f, 0.5f, 0.75f};
              ImPlot::PlotBars("##Bars",bx,by,3,0.2);
              for (int i = 0; i < 3; ++i)
                  ImPlot::Annotate(bx[i],by[i],ImVec2(0,-5),"B[%d]=%.2f",i,by[i]);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Drag and Drop")) {
          ImGui::BulletText("Drag/drop items from the left column.");
          ImGui::BulletText("Drag/drop items between plots.");
          ImGui::Indent();
          ImGui::BulletText("Plot 1 Targets: Plot, Y-Axes, Legend");
          ImGui::BulletText("Plot 1 Sources: Legend Items");
          ImGui::BulletText("Plot 2 Targets: Plot, X-Axis, Y-Axis");
          ImGui::BulletText("Plot 2 Sources: Plot, X-Axis, Y-Axis (hold Ctrl)");
          ImGui::Unindent();
  
          // convenience struct to manage DND items; do this however you like
          struct MyDndItem {
              int              Idx;
              int              Plt;
              int              Yax;
              char             Label[16];
              ImVector<ImVec2> Data;
              ImVec4           Color;
              MyDndItem()        {
                  static int i = 0;
                  Idx = i++;
                  Plt = 0;
                  Yax = ImPlotYAxis_1;
                  sprintf(Label, "%02d Hz", Idx+1);
                  Color = ImPlot::GetColormapColor(Idx);
                  Data.reserve(1001);
                  for (int k = 0; k < 1001; ++k) {
                      float t = k * 1.0f / 999;
                      Data.push_back(ImVec2(t, 0.5f + 0.5f * sinf(2*3.14f*t*(Idx+1))));
                  }
              }
              void Reset() { Plt = 0; Yax = ImPlotYAxis_1; }
          };
  
          const int         k_dnd = 20;
          static MyDndItem  dnd[k_dnd];
          static MyDndItem* dndx = NULL; // for plot 2
          static MyDndItem* dndy = NULL; // for plot 2
  
          // child window to serve as initial source for our DND items
          ImGui::BeginChild("DND_LEFT",ImVec2(100,400));
          if (ImGui::Button("Reset Data", ImVec2(100, 0))) {
              for (int k = 0; k < k_dnd; ++k)
                  dnd[k].Reset();
              dndx = dndy = NULL;
          }
          for (int k = 0; k < k_dnd; ++k) {
              if (dnd[k].Plt > 0)
                  continue;
              ImPlot::ItemIcon(dnd[k].Color); ImGui::SameLine();
              ImGui::Selectable(dnd[k].Label, false, 0, ImVec2(100, 0));
              if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
                  ImGui::SetDragDropPayload("MY_DND", &k, sizeof(int));
                  ImPlot::ItemIcon(dnd[k].Color); ImGui::SameLine();
                  ImGui::TextUnformatted(dnd[k].Label);
                  ImGui::EndDragDropSource();
              }
          }
          ImGui::EndChild();
          if (ImGui::BeginDragDropTarget()) {
              if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                  int i = *(int*)payload->Data; dnd[i].Reset();
              }
              ImGui::EndDragDropTarget();
          }
  
          ImGui::SameLine();
          ImGui::BeginChild("DND_RIGHT",ImVec2(-1,400));
          // plot 1 (time series)
          ImPlotAxisFlags flags = ImPlotAxisFlags_NoTickLabels | ImPlotAxisFlags_NoGridLines;
          if (ImPlot::BeginPlot("##DND1", NULL, "[drop here]", ImVec2(-1,195), ImPlotFlags_YAxis2 | ImPlotFlags_YAxis3, flags | ImPlotAxisFlags_Lock, flags, flags, flags, "[drop here]", "[drop here]")) {
              for (int k = 0; k < k_dnd; ++k) {
                  if (dnd[k].Plt == 1 && dnd[k].Data.size() > 0) {
                      ImPlot::SetPlotYAxis(dnd[k].Yax);
                      ImPlot::SetNextLineStyle(dnd[k].Color);
                      static char label[32];
                      sprintf(label,"%s (Y%d)", dnd[k].Label, dnd[k].Yax+1);
                      ImPlot::PlotLine(label, &dnd[k].Data[0].x, &dnd[k].Data[0].y, dnd[k].Data.size(), 0, 2 * sizeof(float));
                      // allow legend item labels to be DND sources
                      if (ImPlot::BeginDragDropSourceItem(label)) {
                          ImGui::SetDragDropPayload("MY_DND", &k, sizeof(int));
                          ImPlot::ItemIcon(dnd[k].Color); ImGui::SameLine();
                          ImGui::TextUnformatted(dnd[k].Label);
                          ImPlot::EndDragDropSource();
                      }
                  }
              }
              // allow the main plot area to be a DND target
              if (ImPlot::BeginDragDropTarget()) {
                  if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                      int i = *(int*)payload->Data; dnd[i].Plt = 1; dnd[i].Yax = 0;
                  }
                  ImPlot::EndDragDropTarget();
              }
              // allow each y-axis to be a DND target
              for (int y = 0; y < 3; ++y) {
                  if (ImPlot::BeginDragDropTargetY(y)) {
                      if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                          int i = *(int*)payload->Data; dnd[i].Plt = 1; dnd[i].Yax = y;
                      }
                      ImPlot::EndDragDropTarget();
                  }
              }
              // allow the legend to be a DND target
              if (ImPlot::BeginDragDropTargetLegend()) {
                  if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                      int i = *(int*)payload->Data; dnd[i].Plt = 1; dnd[i].Yax = 0;
                  }
                  ImPlot::EndDragDropTarget();
              }
              ImPlot::EndPlot();
          }
          // plot 2 (Lissajous)
          ImPlot::PushStyleColor(ImPlotCol_XAxis, dndx == NULL ? ImPlot::GetStyle().Colors[ImPlotCol_XAxis] : dndx->Color);
          ImPlot::PushStyleColor(ImPlotCol_YAxis, dndy == NULL ? ImPlot::GetStyle().Colors[ImPlotCol_YAxis] : dndy->Color);
          if (ImPlot::BeginPlot("##DND2", dndx == NULL ? "[drop here]" : dndx->Label, dndy == NULL ? "[drop here]" : dndy->Label, ImVec2(-1,195), 0, flags, flags )) {
              if (dndx != NULL && dndy != NULL) {
                  ImVec4 mixed((dndx->Color.x + dndy->Color.x)/2,(dndx->Color.y + dndy->Color.y)/2,(dndx->Color.z + dndy->Color.z)/2,(dndx->Color.w + dndy->Color.w)/2);
                  ImPlot::SetNextLineStyle(mixed);
                  ImPlot::PlotLine("##dndxy", &dndx->Data[0].y, &dndy->Data[0].y, dndx->Data.size(), 0, 2 * sizeof(float));
              }
              // allow the x-axis to be a DND target
              if (ImPlot::BeginDragDropTargetX()) {
                  if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                      int i = *(int*)payload->Data; dndx = &dnd[i];
                  }
                  ImPlot::EndDragDropTarget();
              }
              // allow the x-axis to be a DND source
              if (dndx != NULL && ImPlot::BeginDragDropSourceX()) {
                  ImGui::SetDragDropPayload("MY_DND", &dndx->Idx, sizeof(int));
                  ImPlot::ItemIcon(dndx->Color); ImGui::SameLine();
                  ImGui::TextUnformatted(dndx->Label);
                  ImPlot::EndDragDropSource();
              }
              // allow the y-axis to be a DND target
              if (ImPlot::BeginDragDropTargetY()) {
                  if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                      int i = *(int*)payload->Data; dndy = &dnd[i];
                  }
                  ImPlot::EndDragDropTarget();
              }
              // allow the y-axis to be a DND source
              if (dndy != NULL && ImPlot::BeginDragDropSourceY()) {
                  ImGui::SetDragDropPayload("MY_DND", &dndy->Idx, sizeof(int));
                  ImPlot::ItemIcon(dndy->Color); ImGui::SameLine();
                  ImGui::TextUnformatted(dndy->Label);
                  ImPlot::EndDragDropSource();
              }
              // allow the plot area to be a DND target
              if (ImPlot::BeginDragDropTarget()) {
                  if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("MY_DND")) {
                      int i = *(int*)payload->Data; dndx = dndy = &dnd[i];
                  }
              }
              // allow the plot area to be a DND source
              if (ImPlot::BeginDragDropSource()) {
                  ImGui::TextUnformatted("Yes, you can\ndrag this!");
                  ImPlot::EndDragDropSource();
              }
              ImPlot::EndPlot();
          }
          ImPlot::PopStyleColor(2);
          ImGui::EndChild();
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Digital and Analog Signals")) {
  
          ImGui::BulletText("You can plot digital and analog signals on the same plot.");
          ImGui::BulletText("Digital signals do not respond to Y drag and zoom, so that");
          ImGui::Indent();
          ImGui::Text("you can drag analog signals over the rising/falling digital edge.");
          ImGui::Unindent();
  
          static bool paused = false;
          static ScrollingBuffer dataDigital[2];
          static ScrollingBuffer dataAnalog[2];
          static bool showDigital[2] = {true, false};
          static bool showAnalog[2] = {true, false};
  
          char label[32];
          ImGui::Checkbox("digital_0", &showDigital[0]); ImGui::SameLine();
          ImGui::Checkbox("digital_1", &showDigital[1]); ImGui::SameLine();
          ImGui::Checkbox("analog_0",  &showAnalog[0]);  ImGui::SameLine();
          ImGui::Checkbox("analog_1",  &showAnalog[1]);
  
          static float t = 0;
          if (!paused) {
              t += ImGui::GetIO().DeltaTime;
              //digital signal values
              if (showDigital[0])
                  dataDigital[0].AddPoint(t, sinf(2*t) > 0.45);
              if (showDigital[1])
                  dataDigital[1].AddPoint(t, sinf(2*t) < 0.45);
              //Analog signal values
              if (showAnalog[0])
                  dataAnalog[0].AddPoint(t, sinf(2*t));
              if (showAnalog[1])
                  dataAnalog[1].AddPoint(t, cosf(2*t));
          }
          ImPlot::SetNextPlotLimitsY(-1, 1);
          ImPlot::SetNextPlotLimitsX(t - 10.0, t, paused ? ImGuiCond_Once : ImGuiCond_Always);
          if (ImPlot::BeginPlot("##Digital")) {
              for (int i = 0; i < 2; ++i) {
                  if (showDigital[i] && dataDigital[i].Data.size() > 0) {
                      sprintf(label, "digital_%d", i);
                      ImPlot::PlotDigital(label, &dataDigital[i].Data[0].x, &dataDigital[i].Data[0].y, dataDigital[i].Data.size(), dataDigital[i].Offset, 2 * sizeof(float));
                  }
              }
              for (int i = 0; i < 2; ++i) {
                  if (showAnalog[i]) {
                      sprintf(label, "analog_%d", i);
                      if (dataAnalog[i].Data.size() > 0)
                          ImPlot::PlotLine(label, &dataAnalog[i].Data[0].x, &dataAnalog[i].Data[0].y, dataAnalog[i].Data.size(), dataAnalog[i].Offset, 2 * sizeof(float));
                  }
              }
              ImPlot::EndPlot();
          }
      }
      if (ImGui::CollapsingHeader("Tables")) {
  #ifdef IMGUI_HAS_TABLE
          static ImGuiTableFlags flags = ImGuiTableFlags_BordersOuter | ImGuiTableFlags_BordersV | ImGuiTableFlags_RowBg;
          static bool anim = true;
          static int offset = 0;
          ImGui::BulletText("Plots can be used inside of ImGui tables.");
          ImGui::Checkbox("Animate",&anim);
          if (anim)
              offset = (offset + 1) % 100;
          if (ImGui::BeginTable("##table", 3, flags, ImVec2(-1,0))) {
              ImGui::TableSetupColumn("Electrode", ImGuiTableColumnFlags_WidthFixed, 75.0f);
              ImGui::TableSetupColumn("Voltage", ImGuiTableColumnFlags_WidthFixed, 75.0f);
              ImGui::TableSetupColumn("EMG Signal");
              ImGui::TableHeadersRow();
              ImPlot::PushColormap(ImPlotColormap_Cool);
              for (int row = 0; row < 10; row++) {
                  ImGui::TableNextRow();
                  static float data[100];
                  srand(row);
                  for (int i = 0; i < 100; ++i)
                      data[i] = RandomRange(0.0f,10.0f);
                  ImGui::TableSetColumnIndex(0);
                  ImGui::Text("EMG %d", row);
                  ImGui::TableSetColumnIndex(1);
                  ImGui::Text("%.3f V", data[offset]);
                  ImGui::TableSetColumnIndex(2);
                  ImGui::PushID(row);
                  MyImPlot::Sparkline("##spark",data,100,0,11.0f,offset,ImPlot::GetColormapColor(row),ImVec2(-1, 35));
                  ImGui::PopID();
              }
              ImPlot::PopColormap();
              ImGui::EndTable();
          }
  #else
      ImGui::BulletText("You need to merge the ImGui 'tables' branch for this section.");
  #endif
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Offset and Stride")) {
          static const int k_circles    = 11;
          static const int k_points_per = 50;
          static const int k_size       = 2 * k_points_per * k_circles;
          static double interleaved_data[k_size];
          for (int p = 0; p < k_points_per; ++p) {
              for (int c = 0; c < k_circles; ++c) {
                  double r = (double)c / (k_circles - 1) * 0.2 + 0.2;
                  interleaved_data[p*2*k_circles + 2*c + 0] = 0.5 + r * cos((double)p/k_points_per * 6.28);
                  interleaved_data[p*2*k_circles + 2*c + 1] = 0.5 + r * sin((double)p/k_points_per * 6.28);
              }
          }
          static int offset = 0;
          ImGui::BulletText("Offsetting is useful for realtime plots (see above) and circular buffers.");
          ImGui::BulletText("Striding is useful for interleaved data (e.g. audio) or plotting structs.");
          ImGui::BulletText("Here, all circle data is stored in a single interleaved buffer:");
          ImGui::BulletText("[c0.x0 c0.y0 ... cn.x0 cn.y0 c0.x1 c0.y1 ... cn.x1 cn.y1 ... cn.xm cn.ym]");
          ImGui::BulletText("The offset value indicates which circle point index is considered the first.");
          ImGui::BulletText("Offsets can be negative and/or larger than the actual data count.");
          ImGui::SliderInt("Offset", &offset, -2*k_points_per, 2*k_points_per);
          if (ImPlot::BeginPlot("##strideoffset",0,0,ImVec2(-1,0), ImPlotFlags_Equal)) {
              ImPlot::PushColormap(ImPlotColormap_Jet);
              char buff[16];
              for (int c = 0; c < k_circles; ++c) {
                  sprintf(buff, "Circle %d", c);
                  ImPlot::PlotLine(buff, &interleaved_data[c*2 + 0], &interleaved_data[c*2 + 1], k_points_per, offset, 2*k_circles*sizeof(double));
              }
              ImPlot::EndPlot();
              ImPlot::PopColormap();
          }
          // offset++; uncomment for animation!
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Custom Data and Getters")) {
          ImGui::BulletText("You can plot custom structs using the stride feature.");
          ImGui::BulletText("Most plotters can also be passed a function pointer for getting data.");
          ImGui::Indent();
              ImGui::BulletText("You can optionally pass user data to be given to your getter function.");
              ImGui::BulletText("C++ lambdas can be passed as function pointers as well!");
          ImGui::Unindent();
  
          MyImPlot::Vector2f vec2_data[2] = { MyImPlot::Vector2f(0,0), MyImPlot::Vector2f(1,1) };
  
          if (ImPlot::BeginPlot("##Custom Data")) {
  
              // custom structs using stride example:
              ImPlot::PlotLine("Vector2f", &vec2_data[0].x, &vec2_data[0].y, 2, 0, sizeof(MyImPlot::Vector2f) /* or sizeof(float) * 2 */);
  
              // custom getter example 1:
              ImPlot::PlotLineG("Spiral", MyImPlot::Spiral, NULL, 1000);
  
              // custom getter example 2:
              static MyImPlot::WaveData data1(0.001, 0.2, 2, 0.75);
              static MyImPlot::WaveData data2(0.001, 0.2, 4, 0.25);
              ImPlot::PlotLineG("Waves", MyImPlot::SineWave, &data1, 1000);
              ImPlot::PlotLineG("Waves", MyImPlot::SawWave, &data2, 1000);
              ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
              ImPlot::PlotShadedG("Waves", MyImPlot::SineWave, &data1, MyImPlot::SawWave, &data2, 1000);
              ImPlot::PopStyleVar();
  
              // you can also pass C++ lambdas:
              // auto lamda = [](void* data, int idx) { ... return ImPlotPoint(x,y); };
              // ImPlot::PlotLine("My Lambda", lambda, data, 1000);
  
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Custom Ticks##")) {
          static bool custom_ticks  = true;
          static bool custom_labels = true;
          ImGui::Checkbox("Show Custom Ticks", &custom_ticks);
          if (custom_ticks) {
              ImGui::SameLine();
              ImGui::Checkbox("Show Custom Labels", &custom_labels);
          }
          double pi = 3.14;
          const char* pi_str[] = {"PI"};
          static double yticks[] = {1,3,7,9};
          static const char*  ylabels[] = {"One","Three","Seven","Nine"};
          static double yticks_aux[] = {0.2,0.4,0.6};
          static const char* ylabels_aux[] = {"A","B","C","D","E","F"};
          if (custom_ticks) {
              ImPlot::SetNextPlotTicksX(&pi,1,custom_labels ? pi_str : NULL, true);
              ImPlot::SetNextPlotTicksY(yticks, 4, custom_labels ? ylabels : NULL);
              ImPlot::SetNextPlotTicksY(yticks_aux, 3, custom_labels ? ylabels_aux : NULL, false, 1);
              ImPlot::SetNextPlotTicksY(0, 1, 6, custom_labels ? ylabels_aux : NULL, false, 2);
          }
          ImPlot::SetNextPlotLimits(2.5,5,0,10);
          if (ImPlot::BeginPlot("Custom Ticks", NULL, NULL, ImVec2(-1,0), ImPlotFlags_YAxis2 | ImPlotFlags_YAxis3)) {
              // nothing to see here, just the ticks
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Custom Styles")) {
          ImPlot::PushColormap(ImPlotColormap_Deep);
          // normally you wouldn't change the entire style each frame
          ImPlotStyle backup = ImPlot::GetStyle();
          MyImPlot::StyleSeaborn();
          ImPlot::SetNextPlotLimits(-0.5f, 9.5f, 0, 10);
          if (ImPlot::BeginPlot("seaborn style", "x-axis", "y-axis")) {
              unsigned int lin[10] = {8,8,9,7,8,8,8,9,7,8};
              unsigned int bar[10] = {1,2,5,3,4,1,2,5,3,4};
              unsigned int dot[10] = {7,6,6,7,8,5,6,5,8,7};
              ImPlot::PlotBars("Bars", bar, 10, 0.5f);
              ImPlot::PlotLine("Line", lin, 10);
              ImPlot::NextColormapColor(); // skip green
              ImPlot::PlotScatter("Scatter", dot, 10);
              ImPlot::EndPlot();
          }
          ImPlot::GetStyle() = backup;
          ImPlot::PopColormap();
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Custom Rendering")) {
          if (ImPlot::BeginPlot("##CustomRend")) {
              ImVec2 cntr = ImPlot::PlotToPixels(ImPlotPoint(0.5f,  0.5f));
              ImVec2 rmin = ImPlot::PlotToPixels(ImPlotPoint(0.25f, 0.75f));
              ImVec2 rmax = ImPlot::PlotToPixels(ImPlotPoint(0.75f, 0.25f));
              ImPlot::PushPlotClipRect();
              ImPlot::GetPlotDrawList()->AddCircleFilled(cntr,20,IM_COL32(255,255,0,255),20);
              ImPlot::GetPlotDrawList()->AddRect(rmin, rmax, IM_COL32(128,0,255,255));
              ImPlot::PopPlotClipRect();
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Custom Context Menus")) {
          ImGui::BulletText("You can implement legend context menus to inject per-item controls and widgets.");
          ImGui::BulletText("Right click the legend label/icon to edit custom item attributes.");
  
          static float  frequency = 0.1f;
          static float  amplitude = 0.5f;
          static ImVec4 color     = ImVec4(1,1,0,1);
          static float  alpha     = 1.0f;
          static bool   line      = false;
          static float  thickness = 1;
          static bool   markers   = false;
          static bool   shaded    = false;
  
          static float vals[101];
          for (int i = 0; i < 101; ++i)
              vals[i] = amplitude * sinf(frequency * i);
  
          ImPlot::SetNextPlotLimits(0,100,-1,1);
          if (ImPlot::BeginPlot("Right Click the Legend")) {
              // rendering logic
              ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, alpha);
              if (!line) {
                  ImPlot::SetNextFillStyle(color);
                  ImPlot::PlotBars("Right Click Me", vals, 101);
              }
              else {
                  if (markers) ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle);
                  ImPlot::SetNextLineStyle(color, thickness);
                  ImPlot::PlotLine("Right Click Me", vals, 101);
                  if (shaded) ImPlot::PlotShaded("Right Click Me",vals,101);
              }
              ImPlot::PopStyleVar();
              // custom legend context menu
              if (ImPlot::BeginLegendPopup("Right Click Me")) {
                  ImGui::SliderFloat("Frequency",&frequency,0,1,"%0.2f");
                  ImGui::SliderFloat("Amplitude",&amplitude,0,1,"%0.2f");
                  ImGui::Separator();
                  ImGui::ColorEdit3("Color",&color.x);
                  ImGui::SliderFloat("Transparency",&alpha,0,1,"%.2f");
                  ImGui::Checkbox("Line Plot", &line);
                  if (line) {
                      ImGui::SliderFloat("Thickness", &thickness, 0, 5);
                      ImGui::Checkbox("Markers", &markers);
                      ImGui::Checkbox("Shaded",&shaded);
                  }
                  ImPlot::EndLegendPopup();
              }
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      if (ImGui::CollapsingHeader("Custom Plotters and Tooltips")) {
          ImGui::BulletText("You can create custom plotters or extend ImPlot using implot_internal.h.");
  		double dates[]  = {1546300800,1546387200,1546473600,1546560000,1546819200,1546905600,1546992000,1547078400,1547164800,1547424000,1547510400,1547596800,1547683200,1547769600,1547942400,1548028800,1548115200,1548201600,1548288000,1548374400,1548633600,1548720000,1548806400,1548892800,1548979200,1549238400,1549324800,1549411200,1549497600,1549584000,1549843200,1549929600,1550016000,1550102400,1550188800,1550361600,1550448000,1550534400,1550620800,1550707200,1550793600,1551052800,1551139200,1551225600,1551312000,1551398400,1551657600,1551744000,1551830400,1551916800,1552003200,1552262400,1552348800,1552435200,1552521600,1552608000,1552867200,1552953600,1553040000,1553126400,1553212800,1553472000,1553558400,1553644800,1553731200,1553817600,1554076800,1554163200,1554249600,1554336000,1554422400,1554681600,1554768000,1554854400,1554940800,1555027200,1555286400,1555372800,1555459200,1555545600,1555632000,1555891200,1555977600,1556064000,1556150400,1556236800,1556496000,1556582400,1556668800,1556755200,1556841600,1557100800,1557187200,1557273600,1557360000,1557446400,1557705600,1557792000,1557878400,1557964800,1558051200,1558310400,1558396800,1558483200,1558569600,1558656000,1558828800,1558915200,1559001600,1559088000,1559174400,1559260800,1559520000,1559606400,1559692800,1559779200,1559865600,1560124800,1560211200,1560297600,1560384000,1560470400,1560729600,1560816000,1560902400,1560988800,1561075200,1561334400,1561420800,1561507200,1561593600,1561680000,1561939200,1562025600,1562112000,1562198400,1562284800,1562544000,1562630400,1562716800,1562803200,1562889600,1563148800,1563235200,1563321600,1563408000,1563494400,1563753600,1563840000,1563926400,1564012800,1564099200,1564358400,1564444800,1564531200,1564617600,1564704000,1564963200,1565049600,1565136000,1565222400,1565308800,1565568000,1565654400,1565740800,1565827200,1565913600,1566172800,1566259200,1566345600,1566432000,1566518400,1566777600,1566864000,1566950400,1567036800,1567123200,1567296000,1567382400,1567468800,1567555200,1567641600,1567728000,1567987200,1568073600,1568160000,1568246400,1568332800,1568592000,1568678400,1568764800,1568851200,1568937600,1569196800,1569283200,1569369600,1569456000,1569542400,1569801600,1569888000,1569974400,1570060800,1570147200,1570406400,1570492800,1570579200,1570665600,1570752000,1571011200,1571097600,1571184000,1571270400,1571356800,1571616000,1571702400,1571788800,1571875200,1571961600};
  		double opens[]  = {1284.7,1319.9,1318.7,1328,1317.6,1321.6,1314.3,1325,1319.3,1323.1,1324.7,1321.3,1323.5,1322,1281.3,1281.95,1311.1,1315,1314,1313.1,1331.9,1334.2,1341.3,1350.6,1349.8,1346.4,1343.4,1344.9,1335.6,1337.9,1342.5,1337,1338.6,1337,1340.4,1324.65,1324.35,1349.5,1371.3,1367.9,1351.3,1357.8,1356.1,1356,1347.6,1339.1,1320.6,1311.8,1314,1312.4,1312.3,1323.5,1319.1,1327.2,1332.1,1320.3,1323.1,1328,1330.9,1338,1333,1335.3,1345.2,1341.1,1332.5,1314,1314.4,1310.7,1314,1313.1,1315,1313.7,1320,1326.5,1329.2,1314.2,1312.3,1309.5,1297.4,1293.7,1277.9,1295.8,1295.2,1290.3,1294.2,1298,1306.4,1299.8,1302.3,1297,1289.6,1302,1300.7,1303.5,1300.5,1303.2,1306,1318.7,1315,1314.5,1304.1,1294.7,1293.7,1291.2,1290.2,1300.4,1284.2,1284.25,1301.8,1295.9,1296.2,1304.4,1323.1,1340.9,1341,1348,1351.4,1351.4,1343.5,1342.3,1349,1357.6,1357.1,1354.7,1361.4,1375.2,1403.5,1414.7,1433.2,1438,1423.6,1424.4,1418,1399.5,1435.5,1421.25,1434.1,1412.4,1409.8,1412.2,1433.4,1418.4,1429,1428.8,1420.6,1441,1460.4,1441.7,1438.4,1431,1439.3,1427.4,1431.9,1439.5,1443.7,1425.6,1457.5,1451.2,1481.1,1486.7,1512.1,1515.9,1509.2,1522.3,1513,1526.6,1533.9,1523,1506.3,1518.4,1512.4,1508.8,1545.4,1537.3,1551.8,1549.4,1536.9,1535.25,1537.95,1535.2,1556,1561.4,1525.6,1516.4,1507,1493.9,1504.9,1506.5,1513.1,1506.5,1509.7,1502,1506.8,1521.5,1529.8,1539.8,1510.9,1511.8,1501.7,1478,1485.4,1505.6,1511.6,1518.6,1498.7,1510.9,1510.8,1498.3,1492,1497.7,1484.8,1494.2,1495.6,1495.6,1487.5,1491.1,1495.1,1506.4};
  		double highs[]  = {1284.75,1320.6,1327,1330.8,1326.8,1321.6,1326,1328,1325.8,1327.1,1326,1326,1323.5,1322.1,1282.7,1282.95,1315.8,1316.3,1314,1333.2,1334.7,1341.7,1353.2,1354.6,1352.2,1346.4,1345.7,1344.9,1340.7,1344.2,1342.7,1342.1,1345.2,1342,1350,1324.95,1330.75,1369.6,1374.3,1368.4,1359.8,1359,1357,1356,1353.4,1340.6,1322.3,1314.1,1316.1,1312.9,1325.7,1323.5,1326.3,1336,1332.1,1330.1,1330.4,1334.7,1341.1,1344.2,1338.8,1348.4,1345.6,1342.8,1334.7,1322.3,1319.3,1314.7,1316.6,1316.4,1315,1325.4,1328.3,1332.2,1329.2,1316.9,1312.3,1309.5,1299.6,1296.9,1277.9,1299.5,1296.2,1298.4,1302.5,1308.7,1306.4,1305.9,1307,1297.2,1301.7,1305,1305.3,1310.2,1307,1308,1319.8,1321.7,1318.7,1316.2,1305.9,1295.8,1293.8,1293.7,1304.2,1302,1285.15,1286.85,1304,1302,1305.2,1323,1344.1,1345.2,1360.1,1355.3,1363.8,1353,1344.7,1353.6,1358,1373.6,1358.2,1369.6,1377.6,1408.9,1425.5,1435.9,1453.7,1438,1426,1439.1,1418,1435,1452.6,1426.65,1437.5,1421.5,1414.1,1433.3,1441.3,1431.4,1433.9,1432.4,1440.8,1462.3,1467,1443.5,1444,1442.9,1447,1437.6,1440.8,1445.7,1447.8,1458.2,1461.9,1481.8,1486.8,1522.7,1521.3,1521.1,1531.5,1546.1,1534.9,1537.7,1538.6,1523.6,1518.8,1518.4,1514.6,1540.3,1565,1554.5,1556.6,1559.8,1541.9,1542.9,1540.05,1558.9,1566.2,1561.9,1536.2,1523.8,1509.1,1506.2,1532.2,1516.6,1519.7,1515,1519.5,1512.1,1524.5,1534.4,1543.3,1543.3,1542.8,1519.5,1507.2,1493.5,1511.4,1525.8,1522.2,1518.8,1515.3,1518,1522.3,1508,1501.5,1503,1495.5,1501.1,1497.9,1498.7,1492.1,1499.4,1506.9,1520.9};
  		double lows[]   = {1282.85,1315,1318.7,1309.6,1317.6,1312.9,1312.4,1319.1,1319,1321,1318.1,1321.3,1319.9,1312,1280.5,1276.15,1308,1309.9,1308.5,1312.3,1329.3,1333.1,1340.2,1347,1345.9,1338,1340.8,1335,1332,1337.9,1333,1336.8,1333.2,1329.9,1340.4,1323.85,1324.05,1349,1366.3,1351.2,1349.1,1352.4,1350.7,1344.3,1338.9,1316.3,1308.4,1306.9,1309.6,1306.7,1312.3,1315.4,1319,1327.2,1317.2,1320,1323,1328,1323,1327.8,1331.7,1335.3,1336.6,1331.8,1311.4,1310,1309.5,1308,1310.6,1302.8,1306.6,1313.7,1320,1322.8,1311,1312.1,1303.6,1293.9,1293.5,1291,1277.9,1294.1,1286,1289.1,1293.5,1296.9,1298,1299.6,1292.9,1285.1,1288.5,1296.3,1297.2,1298.4,1298.6,1302,1300.3,1312,1310.8,1301.9,1292,1291.1,1286.3,1289.2,1289.9,1297.4,1283.65,1283.25,1292.9,1295.9,1290.8,1304.2,1322.7,1336.1,1341,1343.5,1345.8,1340.3,1335.1,1341.5,1347.6,1352.8,1348.2,1353.7,1356.5,1373.3,1398,1414.7,1427,1416.4,1412.7,1420.1,1396.4,1398.8,1426.6,1412.85,1400.7,1406,1399.8,1404.4,1415.5,1417.2,1421.9,1415,1413.7,1428.1,1434,1435.7,1427.5,1429.4,1423.9,1425.6,1427.5,1434.8,1422.3,1412.1,1442.5,1448.8,1468.2,1484.3,1501.6,1506.2,1498.6,1488.9,1504.5,1518.3,1513.9,1503.3,1503,1506.5,1502.1,1503,1534.8,1535.3,1541.4,1528.6,1525.6,1535.25,1528.15,1528,1542.6,1514.3,1510.7,1505.5,1492.1,1492.9,1496.8,1493.1,1503.4,1500.9,1490.7,1496.3,1505.3,1505.3,1517.9,1507.4,1507.1,1493.3,1470.5,1465,1480.5,1501.7,1501.4,1493.3,1492.1,1505.1,1495.7,1478,1487.1,1480.8,1480.6,1487,1488.3,1484.8,1484,1490.7,1490.4,1503.1};
  		double closes[] = {1283.35,1315.3,1326.1,1317.4,1321.5,1317.4,1323.5,1319.2,1321.3,1323.3,1319.7,1325.1,1323.6,1313.8,1282.05,1279.05,1314.2,1315.2,1310.8,1329.1,1334.5,1340.2,1340.5,1350,1347.1,1344.3,1344.6,1339.7,1339.4,1343.7,1337,1338.9,1340.1,1338.7,1346.8,1324.25,1329.55,1369.6,1372.5,1352.4,1357.6,1354.2,1353.4,1346,1341,1323.8,1311.9,1309.1,1312.2,1310.7,1324.3,1315.7,1322.4,1333.8,1319.4,1327.1,1325.8,1330.9,1325.8,1331.6,1336.5,1346.7,1339.2,1334.7,1313.3,1316.5,1312.4,1313.4,1313.3,1312.2,1313.7,1319.9,1326.3,1331.9,1311.3,1313.4,1309.4,1295.2,1294.7,1294.1,1277.9,1295.8,1291.2,1297.4,1297.7,1306.8,1299.4,1303.6,1302.2,1289.9,1299.2,1301.8,1303.6,1299.5,1303.2,1305.3,1319.5,1313.6,1315.1,1303.5,1293,1294.6,1290.4,1291.4,1302.7,1301,1284.15,1284.95,1294.3,1297.9,1304.1,1322.6,1339.3,1340.1,1344.9,1354,1357.4,1340.7,1342.7,1348.2,1355.1,1355.9,1354.2,1362.1,1360.1,1408.3,1411.2,1429.5,1430.1,1426.8,1423.4,1425.1,1400.8,1419.8,1432.9,1423.55,1412.1,1412.2,1412.8,1424.9,1419.3,1424.8,1426.1,1423.6,1435.9,1440.8,1439.4,1439.7,1434.5,1436.5,1427.5,1432.2,1433.3,1441.8,1437.8,1432.4,1457.5,1476.5,1484.2,1519.6,1509.5,1508.5,1517.2,1514.1,1527.8,1531.2,1523.6,1511.6,1515.7,1515.7,1508.5,1537.6,1537.2,1551.8,1549.1,1536.9,1529.4,1538.05,1535.15,1555.9,1560.4,1525.5,1515.5,1511.1,1499.2,1503.2,1507.4,1499.5,1511.5,1513.4,1515.8,1506.2,1515.1,1531.5,1540.2,1512.3,1515.2,1506.4,1472.9,1489,1507.9,1513.8,1512.9,1504.4,1503.9,1512.8,1500.9,1488.7,1497.6,1483.5,1494,1498.3,1494.1,1488.1,1487.5,1495.7,1504.7,1505.3};
          static bool tooltip = true;
          ImGui::Checkbox("Show Tooltip", &tooltip);
          ImGui::SameLine();
          static ImVec4 bullCol = ImVec4(0.000f, 1.000f, 0.441f, 1.000f);
          static ImVec4 bearCol = ImVec4(0.853f, 0.050f, 0.310f, 1.000f);
          ImGui::SameLine(); ImGui::ColorEdit4("##Bull", &bullCol.x, ImGuiColorEditFlags_NoInputs);
          ImGui::SameLine(); ImGui::ColorEdit4("##Bear", &bearCol.x, ImGuiColorEditFlags_NoInputs);
          ImPlot::GetStyle().UseLocalTime = false;
          ImPlot::SetNextPlotLimits(1546300800, 1571961600, 1250, 1600);
          if (ImPlot::BeginPlot("Candlestick Chart","Day","USD",ImVec2(-1,0),0,ImPlotAxisFlags_Time)) {
              MyImPlot::PlotCandlestick("GOOGL",dates, opens, closes, lows, highs, 218, tooltip, 0.25f, bullCol, bearCol);
              ImPlot::EndPlot();
          }
      }
      //-------------------------------------------------------------------------
      ImGui::End();
  }
  
  } // namespace ImPlot
  
  namespace MyImPlot {
  
  ImPlotPoint SineWave(void* data , int idx) {
      WaveData* wd = (WaveData*)data;
      double x = idx * wd->X;
      return ImPlotPoint(x, wd->Offset + wd->Amp * sin(2 * 3.14 * wd->Freq * x));
  }
  
  ImPlotPoint SawWave(void* data, int idx) {
      WaveData* wd = (WaveData*)data;
      double x = idx * wd->X;
      return ImPlotPoint(x, wd->Offset + wd->Amp * (-2 / 3.14 * atan(cos(3.14 * wd->Freq * x) / sin(3.14 * wd->Freq * x))));
  }
  
  ImPlotPoint Spiral(void*, int idx) {
      float r = 0.9f;            // outer radius
      float a = 0;               // inner radius
      float b = 0.05f;           // increment per rev
      float n = (r - a) / b;     // number  of revolutions
      double th = 2 * n * 3.14;  // angle
      float Th = float(th * idx / (1000 - 1));
      return ImPlotPoint(0.5f+(a + b*Th / (2.0f * (float) 3.14))*cos(Th),
                         0.5f + (a + b*Th / (2.0f * (float)3.14))*sin(Th));
  }
  
  // Example for Tables section. Generates a quick and simple shaded line plot. See implementation at bottom.
  void Sparkline(const char* id, const float* values, int count, float min_v, float max_v, int offset, const ImVec4& col, const ImVec2& size) {
      ImPlot::PushStyleVar(ImPlotStyleVar_PlotPadding, ImVec2(0,0));
      ImPlot::SetNextPlotLimits(0, count - 1, min_v, max_v, ImGuiCond_Always);
      if (ImPlot::BeginPlot(id,0,0,size,ImPlotFlags_CanvasOnly|ImPlotFlags_NoChild,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations)) {
          ImPlot::PushStyleColor(ImPlotCol_Line, col);
          ImPlot::PlotLine(id, values, count, 1, 0, offset);
          ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.25f);
          ImPlot::PlotShaded(id, values, count, 0, 1, 0, offset);
          ImPlot::PopStyleVar();
          ImPlot::PopStyleColor();
          ImPlot::EndPlot();
      }
      ImPlot::PopStyleVar();
  }
  
  void StyleSeaborn() {
  
      ImPlotStyle& style              = ImPlot::GetStyle();
  
      ImVec4* colors                  = style.Colors;
      colors[ImPlotCol_Line]          = IMPLOT_AUTO_COL;
      colors[ImPlotCol_Fill]          = IMPLOT_AUTO_COL;
      colors[ImPlotCol_MarkerOutline] = IMPLOT_AUTO_COL;
      colors[ImPlotCol_MarkerFill]    = IMPLOT_AUTO_COL;
      colors[ImPlotCol_ErrorBar]      = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_FrameBg]       = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
      colors[ImPlotCol_PlotBg]        = ImVec4(0.92f, 0.92f, 0.95f, 1.00f);
      colors[ImPlotCol_PlotBorder]    = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
      colors[ImPlotCol_LegendBg]      = ImVec4(0.92f, 0.92f, 0.95f, 1.00f);
      colors[ImPlotCol_LegendBorder]  = ImVec4(0.80f, 0.81f, 0.85f, 1.00f);
      colors[ImPlotCol_LegendText]    = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_TitleText]     = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_InlayText]     = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_XAxis]         = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_XAxisGrid]     = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
      colors[ImPlotCol_YAxis]         = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_YAxisGrid]     = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
      colors[ImPlotCol_YAxis2]        = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_YAxisGrid2]    = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
      colors[ImPlotCol_YAxis3]        = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
      colors[ImPlotCol_YAxisGrid3]    = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
      colors[ImPlotCol_Selection]     = ImVec4(1.00f, 0.65f, 0.00f, 1.00f);
      colors[ImPlotCol_Query]         = ImVec4(0.23f, 0.10f, 0.64f, 1.00f);
      colors[ImPlotCol_Crosshairs]    = ImVec4(0.23f, 0.10f, 0.64f, 0.50f);
  
      style.LineWeight       = 1.5;
      style.Marker           = ImPlotMarker_None;
      style.MarkerSize       = 4;
      style.MarkerWeight     = 1;
      style.FillAlpha        = 1.0f;
      style.ErrorBarSize     = 5;
      style.ErrorBarWeight   = 1.5f;
      style.DigitalBitHeight = 8;
      style.DigitalBitGap    = 4;
      style.PlotBorderSize   = 0;
      style.MinorAlpha       = 1.0f;
      style.MajorTickLen     = ImVec2(0,0);
      style.MinorTickLen     = ImVec2(0,0);
      style.MajorTickSize    = ImVec2(0,0);
      style.MinorTickSize    = ImVec2(0,0);
      style.MajorGridSize    = ImVec2(1.2f,1.2f);
      style.MinorGridSize    = ImVec2(1.2f,1.2f);
      style.PlotPadding      = ImVec2(12,12);
      style.LabelPadding     = ImVec2(5,5);
      style.LegendPadding    = ImVec2(5,5);
      style.MousePosPadding      = ImVec2(5,5);
      style.PlotMinSize      = ImVec2(300,225);
  }
  
  } // namespaece MyImPlot
  
  // WARNING:
  //
  // You can use "implot_internal.h" to build custom plotting fuctions or extend ImPlot.
  // However, note that forward compatibility of this file is not guaranteed and the
  // internal API is subject to change. At some point we hope to bring more of this
  // into the public API and expose the necessary building blocks to fully support
  // custom plotters. For now, proceed at your own risk!
  
  #include "implot_internal.h"
  
  namespace MyImPlot {
  
  template <typename T>
  int BinarySearch(const T* arr, int l, int r, T x) {
      if (r >= l) {
          int mid = l + (r - l) / 2;
          if (arr[mid] == x)
              return mid;
          if (arr[mid] > x)
              return BinarySearch(arr, l, mid - 1, x);
          return BinarySearch(arr, mid + 1, r, x);
      }
      return -1;
  }
  
  void PlotCandlestick(const char* label_id, const double* xs, const double* opens, const double* closes, const double* lows, const double* highs, int count, bool tooltip, float width_percent, ImVec4 bullCol, ImVec4 bearCol) {
  
      // get ImGui window DrawList
      ImDrawList* draw_list = ImPlot::GetPlotDrawList();
      // calc real value width
      double half_width = count > 1 ? (xs[1] - xs[0]) * width_percent : width_percent;
  
      // custom tool
      if (ImPlot::IsPlotHovered() && tooltip) {
          ImPlotPoint mouse   = ImPlot::GetPlotMousePos();
          mouse.x             = ImPlot::RoundTime(ImPlotTime::FromDouble(mouse.x), ImPlotTimeUnit_Day).ToDouble();
          float  tool_l       = ImPlot::PlotToPixels(mouse.x - half_width * 1.5, mouse.y).x;
          float  tool_r       = ImPlot::PlotToPixels(mouse.x + half_width * 1.5, mouse.y).x;
          float  tool_t       = ImPlot::GetPlotPos().y;
          float  tool_b       = tool_t + ImPlot::GetPlotSize().y;
          ImPlot::PushPlotClipRect();
          draw_list->AddRectFilled(ImVec2(tool_l, tool_t), ImVec2(tool_r, tool_b), IM_COL32(128,128,128,64));
          ImPlot::PopPlotClipRect();
          // find mouse location index
          int idx = BinarySearch(xs, 0, count - 1, mouse.x);
          // render tool tip (won't be affected by plot clip rect)
          if (idx != -1) {
              ImGui::BeginTooltip();
              char buff[32];
              ImPlot::FormatDate(ImPlotTime::FromDouble(xs[idx]),buff,32,ImPlotDateFmt_DayMoYr,ImPlot::GetStyle().UseISO8601);
              ImGui::Text("Day:   %s",  buff);
              ImGui::Text("Open:  $%.2f", opens[idx]);
              ImGui::Text("Close: $%.2f", closes[idx]);
              ImGui::Text("Low:   $%.2f", lows[idx]);
              ImGui::Text("High:  $%.2f", highs[idx]);
              ImGui::EndTooltip();
          }
      }
  
      // begin plot item
      if (ImPlot::BeginItem(label_id)) {
          // override legend icon color
          ImPlot::GetCurrentItem()->Color = ImVec4(0.25f,0.25f,0.25f,1);
          // fit data if requested
          if (ImPlot::FitThisFrame()) {
              for (int i = 0; i < count; ++i) {
                  ImPlot::FitPoint(ImPlotPoint(xs[i], lows[i]));
                  ImPlot::FitPoint(ImPlotPoint(xs[i], highs[i]));
              }
          }
          // render data
          for (int i = 0; i < count; ++i) {
              ImVec2 open_pos  = ImPlot::PlotToPixels(xs[i] - half_width, opens[i]);
              ImVec2 close_pos = ImPlot::PlotToPixels(xs[i] + half_width, closes[i]);
              ImVec2 low_pos   = ImPlot::PlotToPixels(xs[i], lows[i]);
              ImVec2 high_pos  = ImPlot::PlotToPixels(xs[i], highs[i]);
              ImU32 color      = ImGui::GetColorU32(opens[i] > closes[i] ? bearCol : bullCol);
              draw_list->AddLine(low_pos, high_pos, color);
              draw_list->AddRectFilled(open_pos, close_pos, color);
          }
  
          // end plot item
          ImPlot::EndItem();
      }
  }
  
  } // namespace MyImplot
  
  namespace ImPlot {
  
  //-----------------------------------------------------------------------------
  // BENCHMARK
  //-----------------------------------------------------------------------------
  
  struct BenchData {
      BenchData() {
          float y = RandomRange(0.0f,1.0f);
          Data = new float[1000];
          for (int i = 0; i < 1000; ++i) {
              Data[i] = y + RandomRange(-0.01f,0.01f);
          }
          Col = ImVec4(RandomRange(0.0f,1.0f),RandomRange(0.0f,1.0f),RandomRange(0.0f,1.0f),0.5f);
      }
      ~BenchData() { delete[] Data; }
      float* Data;
      ImVec4 Col;
  };
  
  enum BenchMode {
      Line = 0,
      Shaded = 1,
      Scatter = 2,
      Bars = 3
  };
  
  struct BenchRecord {
      int Mode;
      bool AA;
      ImVector<ImPlotPoint> Data;
  };
  
  void ShowBenchmarkTool() {
      static const int max_items = 500;
      static BenchData items[max_items];
      static bool running = false;
      static int frames   = 60;
      static int L        = 0;
      static int F        = 0;
      static double t1, t2;
      static int mode     = BenchMode::Line;
      const char* names[] = {"Line","Shaded","Scatter","Bars"};
  
      static ImVector<BenchRecord> records;
  
      if (running) {
          F++;
          if (F == frames) {
              t2 = ImGui::GetTime();
              records.back().Data.push_back(ImPlotPoint(L, frames / (t2 - t1)));
              L  += 5;
              F  = 0;
              t1 = ImGui::GetTime();
          }
          if (L > max_items) {
              running = false;
              L = max_items;
          }
      }
  
      ImGui::Text("ImDrawIdx: %d-bit", (int)(sizeof(ImDrawIdx) * 8));
      ImGui::Text("ImGuiBackendFlags_RendererHasVtxOffset: %s", (ImGui::GetIO().BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset) ? "True" : "False");
      ImGui::Text("%.2f FPS", ImGui::GetIO().Framerate);
  
      ImGui::Separator();
  
      bool was_running = running;
      if (was_running) {
          ImGui::PushItemFlag(ImGuiItemFlags_Disabled, true);
          ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().Alpha * 0.25f);
      }
      if (ImGui::Button("Benchmark")) {
          running = true;
          L = F = 0;
          records.push_back(BenchRecord());
          records.back().Data.reserve(max_items+1);
          records.back().Mode = mode;
          records.back().AA   = ImPlot::GetStyle().AntiAliasedLines;
          t1 = ImGui::GetTime();
      }
      ImGui::SameLine();
      ImGui::SetNextItemWidth(200);
      ImGui::Combo("##Mode",&mode,names,4);
      ImGui::SameLine();
  
      ImGui::Checkbox("Anti-Aliased Lines", &ImPlot::GetStyle().AntiAliasedLines);
      if (was_running) { ImGui::PopItemFlag(); ImGui::PopStyleVar(); }
  
      ImGui::ProgressBar((float)L / (float)(max_items - 1));
  
      ImPlot::SetNextPlotLimits(0,1000,0,1,ImGuiCond_Always);
      if (ImPlot::BeginPlot("##Bench",NULL,NULL,ImVec2(-1,0),ImPlotFlags_NoChild | ImPlotFlags_CanvasOnly,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations)) {
          if (running) {
              if (mode == BenchMode::Line) {
                  for (int i = 0; i < L; ++i) {
                      ImGui::PushID(i);
                      ImPlot::SetNextLineStyle(items[i].Col);
                      ImPlot::PlotLine("##item", items[i].Data, 1000);
                      ImGui::PopID();
                  }
              }
              else if (mode == BenchMode::Shaded) {
                  for (int i = 0; i < L; ++i) {
                      ImGui::PushID(i);
                      ImPlot::SetNextFillStyle(items[i].Col,0.5f);
                      ImPlot::PlotShaded("##item", items[i].Data, 1000);
                      ImGui::PopID();
                  }
              }
              else if (mode == BenchMode::Scatter) {
                  for (int i = 0; i < L; ++i) {
                      ImGui::PushID(i);
                      ImPlot::SetNextLineStyle(items[i].Col);
                      ImPlot::PlotScatter("##item", items[i].Data, 1000);
                      ImGui::PopID();
                  }
              }
              else if (mode == BenchMode::Bars) {
                  for (int i = 0; i < L; ++i) {
                      ImGui::PushID(i);
                      ImPlot::SetNextFillStyle(items[i].Col,0.5f);
                      ImPlot::PlotBars("##item", items[i].Data, 1000);
                      ImGui::PopID();
                  }
              }
          }
          ImPlot::EndPlot();
      }
      ImPlot::SetNextPlotLimits(0,500,0,500,ImGuiCond_Always);
      static char buffer[64];
      if (ImPlot::BeginPlot("##Stats", "Items (1,000 pts each)", "Framerate (Hz)", ImVec2(-1,0), ImPlotFlags_NoChild)) {
          for (int run = 0; run < records.size(); ++run) {
              if (records[run].Data.Size > 1) {
                  sprintf(buffer, "B%d-%s%s", run + 1, names[records[run].Mode], records[run].AA ? "-AA" : "");
                  ImVector<ImPlotPoint>& d = records[run].Data;
                  ImPlot::PlotLine(buffer, &d[0].x, &d[0].y, d.Size, 0, 2*sizeof(double));
              }
          }
          ImPlot::EndPlot();
      }
  }
  
  }
  