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implot/implot_demo.cpp
Evan Pezent c4e9d64600 rename plotting functions, add PlotScatter
2020-05-16 08:43:24 -05:00

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// 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 v0.2 WIP
#include "implot.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <cmath> // for 'float' overloads of elementary functions (sin,cos,etc)
#ifdef _MSC_VER
#define sprintf sprintf_s
#endif
namespace {
float RandomRange( float min, float max ) {
float scale = rand() / (float) RAND_MAX;
return min + scale * ( max - min );
}
struct ScrollingData {
int MaxSize;
int Offset;
ImVector<ImVec2> Data;
ScrollingData() {
MaxSize = 1000;
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;
}
}
};
struct RollingData {
float Span;
ImVector<ImVec2> Data;
RollingData() {
Span = 10.0f;
Data.reserve(1000);
}
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));
}
};
struct BenchmarkItem {
BenchmarkItem() {
float y = RandomRange(0,1);
Data = new ImVec2[1000];
for (int i = 0; i < 1000; ++i) {
Data[i].x = i*0.001f;
Data[i].y = y + RandomRange(-0.01f,0.01f);
}
Col = ImVec4(RandomRange(0,1),RandomRange(0,1),RandomRange(0,1),1);
}
~BenchmarkItem() { delete Data; }
ImVec2* Data;
ImVec4 Col;
};
} // private namespace
namespace ImPlot {
void ShowDemoWindow(bool* p_open) {
static bool show_app_metrics = false;
static bool show_app_style_editor = false;
if (show_app_metrics) { ImGui::ShowMetricsWindow(&show_app_metrics); }
if (show_app_style_editor) { ImGui::Begin("Style Editor", &show_app_style_editor); ImGui::ShowStyleEditor(); ImGui::End(); }
ImGui::SetNextWindowPos(ImVec2(50, 50), ImGuiCond_FirstUseEver);
ImGui::SetNextWindowSize(ImVec2(520, 750), ImGuiCond_FirstUseEver);
ImGui::Begin("ImPlot Demo", p_open, ImGuiWindowFlags_MenuBar);
if (ImGui::BeginMenuBar()) {
if (ImGui::BeginMenu("Tools")) {
ImGui::MenuItem("Metrics", NULL, &show_app_metrics);
ImGui::MenuItem("Style Editor (ImGui)", NULL, &show_app_style_editor);
ImGui::EndMenu();
}
ImGui::EndMenuBar();
}
//-------------------------------------------------------------------------
ImGui::Text("ImPlot says hello. (0.2 WIP)");
if (ImGui::CollapsingHeader("Help")) {
ImGui::Text("USER GUIDE:");
ImGui::BulletText("Left click and drag within the plot area to pan X and Y axes.");
ImGui::Indent();
ImGui::BulletText("Left click and drag on an axis to pan an individual axis.");
ImGui::Unindent();
ImGui::BulletText("Scroll in the plot area to zoom both X any Y axes.");
ImGui::Indent();
ImGui::BulletText("Scroll on an axis to zoom an individual axis.");
ImGui::Unindent();
ImGui::BulletText("Right click and drag to box select data.");
ImGui::Indent();
ImGui::BulletText("Hold Alt to expand box selection horizontally.");
ImGui::BulletText("Hold Shift to expand box selection vertically.");
ImGui::BulletText("Left click while box selecting to cancel the selection.");
ImGui::Unindent();
ImGui::BulletText("Double left click to fit all visible data.");
ImGui::Indent();
ImGui::BulletText("Double left click on an axis to fit the individual axis.");
ImGui::Unindent();
ImGui::BulletText("Double right click to open the plot context menu.");
ImGui::BulletText("Click legend label icons to show/hide plot items.");
}
//-------------------------------------------------------------------------
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 * sin(50 * xs1[i]);
}
static float xs2[11], ys2[11];
for (int i = 0; i < 11; ++i) {
xs2[i] = i * 0.1f;
ys2[i] = xs2[i] * xs2[i];
}
if (ImPlot::BeginPlot("Line Plot", "x", "f(x)", ImVec2(0,0))) {
ImPlot::PlotLine("sin(50*x)", xs1, ys1, 1001);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Circle);
ImPlot::PlotLine("x^2", xs2, ys2, 11);
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, ImVec2(-1,300))) {
ImPlot::PlotScatter("Data 1", xs1, ys1, 100);
ImPlot::PushStyleVar(ImPlotStyleVar_MarkerSize, 6);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Square);
ImPlot::PushStyleColor(ImPlotCol_MarkerFill, ImVec4(1,0,0,0.25f));
ImPlot::PushStyleColor(ImPlotCol_MarkerOutline, ImVec4(0,0,0,0));
ImPlot::PlotScatter("Data 2", xs2, ys2, 50);
ImPlot::PopStyleColor(2);
ImPlot::PopStyleVar(2);
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Bar Plots")) {
static bool horz = false;
ImGui::Checkbox("Horizontal",&horz);
if (horz)
ImPlot::SetNextPlotLimits(0, 110, -0.5f, 9.5f, ImGuiCond_Always);
else
ImPlot::SetNextPlotLimits(-0.5f, 9.5f, 0, 110, ImGuiCond_Always);
if (ImPlot::BeginPlot("Bar Plot", horz ? "Score": "Student", horz ? "Student" : "Score", ImVec2(-1, 300))) {
static float midtm[10] = {83, 67, 23, 89, 83, 78, 91, 82, 85, 90};
static float final[10] = {80, 62, 56, 99, 55, 78, 88, 78, 90, 100};
static float grade[10] = {80, 69, 52, 92, 72, 78, 75, 76, 89, 95};
if (horz) {
ImPlot::PlotBarH("Midterm Exam", midtm, 10, 0.2f, -0.2f);
ImPlot::PlotBarH("Final Exam", final, 10, 0.2f, 0);
ImPlot::PlotBarH("Course Grade", grade, 10, 0.2f, 0.2f);
}
else {
ImPlot::PlotBar("Midterm Exam", midtm, 10, 0.2f, -0.2f);
ImPlot::PlotBar("Final Exam", final, 10, 0.2f, 0);
ImPlot::PlotBar("Course Grade", grade, 10, 0.2f, 0.2f);
}
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Error Bars")) {
float xs[5] = {1,2,3,4,5};
float lin[5] = {8,8,9,7,8};
float bar[5] = {1,2,5,3,4};
float err1[5] = {0.2f, 0.4f, 0.2f, 0.6f, 0.4f};
float err2[5] = {0.4f, 0.2f, 0.4f, 0.8f, 0.6f};
ImPlot::SetNextPlotLimits(0, 6, 0, 10);
if (ImPlot::BeginPlot("##ErrorBars",NULL,NULL,ImVec2(-1,300))) {
ImPlot::PlotBar("Bar", xs, bar, 5, 0.5f);
ImPlot::PlotErrorBars("Bar", xs, bar, err1, 5);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Circle);
ImPlot::PushStyleVar(ImPlotStyleVar_MarkerSize, 3);
ImPlot::PushStyleColor(ImPlotCol_ErrorBar, ImVec4(1,0,0,1));
ImPlot::PlotErrorBars("Line", xs, lin, err1, err2, 5);
ImPlot::PlotLine("Line", xs, lin, 5);
ImPlot::PopStyleVar(2);
ImPlot::PopStyleColor();
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Pie Charts")) {
static const char* labels1[] = {"Frogs","Hogs","Dogs","Logs"};
static float pre_normalized[] = {0.15f, 0.30f, 0.45f, 0.10f};
ImVec2 center(0.5f,0.5f); // in plot units, not pixels
float radius = 0.4f; // in plot units, not pixels
SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
if (ImPlot::BeginPlot("##Pie1", NULL, NULL, ImVec2(250,250), ImPlotFlags_Legend, 0, 0)) {
ImPlot::PlotPieChart(labels1, pre_normalized, 4, center, radius);
ImPlot::EndPlot();
}
ImGui::SameLine();
static ImVec4 YlOrRd[5] = {
ImVec4(1.0000f, 1.0000f, 0.8000f, 1.0f),
ImVec4(0.9961f, 0.8510f, 0.4627f, 1.0f),
ImVec4(0.9961f, 0.6314f, 0.2627f, 1.0f),
ImVec4(0.9882f, 0.3059f, 0.1647f, 1.0f),
ImVec4(0.7412f, 0.0f, 0.1490f, 1.0f),
};
ImPlot::SetPalette(YlOrRd, 5);
SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
static const char* labels2[] = {"One","Two","Three","Four","Five"};
static float not_normalized[] = {1,2,3,4,5};
if (ImPlot::BeginPlot("##Pie2", NULL, NULL, ImVec2(250,250), ImPlotFlags_Legend, 0, 0)) {
ImPlot::PlotPieChart(labels2, not_normalized, 5, center, radius);
ImPlot::EndPlot();
}
ImPlot::RestorePalette();
}
//-------------------------------------------------------------------------
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 bool paused = false;
static ScrollingData sdata1, sdata2;
static RollingData rdata1, rdata2;
ImVec2 mouse = ImGui::GetMousePos();
static float t = 0;
if (!paused) {
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);
}
ImPlot::SetNextPlotLimitsX(t - 10, t, paused ? ImGuiCond_Once : ImGuiCond_Always);
static int rt_axis = ImPlotAxisFlags_Default & ~ImPlotAxisFlags_TickLabels;
if (ImPlot::BeginPlot("##Scrolling", NULL, NULL, ImVec2(-1,150), ImPlotFlags_Default, rt_axis, rt_axis)) {
ImPlot::PlotLine("Data 1", &sdata1.Data[0].x, &sdata1.Data[0].y, sdata1.Data.size(), 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, 10, ImGuiCond_Always);
if (ImPlot::BeginPlot("##Rolling", NULL, NULL, ImVec2(-1,150), ImPlotFlags_Default, 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")) {
ImPlot::SetNextPlotLimits(0, 10, 0, 12);
if (ImPlot::BeginPlot("##MarkerStyles", NULL, NULL, ImVec2(-1,300), 0, 0, 0)) {
float xs[2] = {1,4};
float ys[2] = {10,11};
// filled
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Circle);
ImPlot::PlotLine("Circle##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Square); ys[0]--; ys[1]--;
ImPlot::PlotLine("Square##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Diamond); ys[0]--; ys[1]--;
ImPlot::PlotLine("Diamond##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Up); ys[0]--; ys[1]--;
ImPlot::PlotLine("Up##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Down); ys[0]--; ys[1]--;
ImPlot::PlotLine("Down##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Left); ys[0]--; ys[1]--;
ImPlot::PlotLine("Left##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Right); ys[0]--; ys[1]--;
ImPlot::PlotLine("Right##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Cross); ys[0]--; ys[1]--;
ImPlot::PlotLine("Cross##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Plus); ys[0]--; ys[1]--;
ImPlot::PlotLine("Plus##Fill", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Asterisk); ys[0]--; ys[1]--;
ImPlot::PlotLine("Asterisk##Fill", xs, ys, 2);
ImPlot::PopStyleVar(10);
xs[0] = 6; xs[1] = 9;
ys[0] = 10; ys[1] = 11;
ImPlot::PushStyleColor(ImPlotCol_MarkerFill, ImVec4(0,0,0,0));
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Circle);
ImPlot::PlotLine("Circle", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Square); ys[0]--; ys[1]--;
ImPlot::PlotLine("Square", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Diamond); ys[0]--; ys[1]--;
ImPlot::PlotLine("Diamond", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Up); ys[0]--; ys[1]--;
ImPlot::PlotLine("Up", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Down); ys[0]--; ys[1]--;
ImPlot::PlotLine("Down", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Left); ys[0]--; ys[1]--;
ImPlot::PlotLine("Left", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Right); ys[0]--; ys[1]--;
ImPlot::PlotLine("Right", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Cross); ys[0]--; ys[1]--;
ImPlot::PlotLine("Cross", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Plus); ys[0]--; ys[1]--;
ImPlot::PlotLine("Plus", xs, ys, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Asterisk); ys[0]--; ys[1]--;
ImPlot::PlotLine("Asterisk", xs, ys, 2);
ImPlot::PopStyleColor();
ImPlot::PopStyleVar(10);
xs[0] = 5; xs[1] = 5;
ys[0] = 1; ys[1] = 11;
ImPlot::PushStyleVar(ImPlotStyleVar_LineWeight, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_MarkerSize, 8);
ImPlot::PushStyleVar(ImPlotStyleVar_MarkerWeight, 2);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Circle | ImPlotMarker_Cross);
ImPlot::PushStyleColor(ImPlotCol_MarkerOutline, ImVec4(0,0,0,1));
ImPlot::PushStyleColor(ImPlotCol_MarkerFill, ImVec4(1,1,1,1));
ImPlot::PushStyleColor(ImPlotCol_Line, ImVec4(0,0,0,1));
ImPlot::PlotLine("Circle|Cross", xs, ys, 2);
ImPlot::PopStyleVar(4);
ImPlot::PopStyleColor(3);
ImPlot::PlotText("Filled Markers", 1.5, 11.75);
ImPlot::PlotText("Open Markers", 6.75, 11.75);
ImPlot::PlotText("Fancy Markers", 4.5, 4.25, true);
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Log Scale")) {
ImGui::BulletText("Open the plot context menu (double right click) to change scales.");
static float xs[1001], ys1[1001], ys2[1001], ys3[1001];
for (int i = 0; i < 1001; ++i) {
xs[i] = (float)(i*0.1f);
ys1[i] = sin(xs[i]) + 1;
ys2[i] = log(xs[i]);
ys3[i] = pow(10.0f, xs[i]);
}
ImPlot::SetNextPlotLimits(0.1f, 100, 0, 10);
if (ImPlot::BeginPlot("Log Plot", NULL, NULL, ImVec2(-1,300), ImPlotFlags_Default, ImPlotAxisFlags_Default | 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("Multiple Y-Axes")) {
static ImVec4 txt_col = ImGui::GetStyle().Colors[ImGuiCol_Text];
txt_col.w = 0.25f;
static ImVec4 y1_col = txt_col;
static ImVec4 y2_col = txt_col;
static ImVec4 y3_col = txt_col;
static float xs[1001], xs2[1001], ys1[1001], ys2[1001], ys3[1001];
static bool y2_axis = true;
static bool y3_axis = false;
ImGui::Checkbox("Y-Axis 2", &y2_axis);
ImGui::SameLine();
ImGui::Checkbox("Y-Axis 3", &y3_axis);
ImGui::SameLine();
ImGui::ColorEdit4("##Col1", &y1_col.x, ImGuiColorEditFlags_NoInputs);
ImGui::SameLine();
ImGui::ColorEdit4("##Col2", &y2_col.x, ImGuiColorEditFlags_NoInputs);
ImGui::SameLine();
ImGui::ColorEdit4("##Col3", &y3_col.x, ImGuiColorEditFlags_NoInputs);
for (int i = 0; i < 1001; ++i) {
xs[i] = (float)(i*0.1f);
ys1[i] = sin(xs[i]) * 3 + 1;
ys2[i] = cos(xs[i]) * 0.2f + 0.5f;
ys3[i] = sin(xs[i]+0.5f) * 100 + 200;
xs2[i] = xs[i] + 10.0f;
}
ImPlot::SetNextPlotLimits(0.1f, 100, 0, 10);
ImPlot::SetNextPlotLimitsY(0, 1, ImGuiCond_Once, 1);
ImPlot::SetNextPlotLimitsY(0, 300, ImGuiCond_Once, 2);
ImPlot::PushStyleColor(ImPlotCol_YAxis, y1_col);
ImPlot::PushStyleColor(ImPlotCol_YAxis2, y2_col);
ImPlot::PushStyleColor(ImPlotCol_YAxis3, y3_col);
if (ImPlot::BeginPlot("Multi-Axis Plot", NULL, NULL, ImVec2(-1,300),
ImPlotFlags_Default |
(y2_axis ? ImPlotFlags_YAxis2 : 0) |
(y3_axis ? ImPlotFlags_YAxis3 : 0))) {
ImPlot::PlotLine("f(x) = x", xs, xs, 1001);
ImPlot::PlotLine("f(x) = sin(x)*3+1", xs, ys1, 1001);
if (y2_axis) {
ImPlot::SetPlotYAxis(1);
ImPlot::PlotLine("f(x) = cos(x)*.2+.5 (Y2)", xs, ys2, 1001);
}
if (y3_axis) {
ImPlot::SetPlotYAxis(2);
ImPlot::PlotLine("f(x) = sin(x+.5)*100+200 (Y3)", xs2, ys3, 1001);
}
ImPlot::EndPlot();
}
ImPlot::PopStyleColor(3);
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Querying")) {
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();
static ImVector<ImVec2> data;
ImPlotLimits range, query;
if (ImPlot::BeginPlot("##Drawing", NULL, NULL, ImVec2(-1,300), ImPlotFlags_Default | ImPlotFlags_Query, ImPlotAxisFlags_GridLines, ImPlotAxisFlags_GridLines)) {
if (ImPlot::IsPlotHovered() && ImGui::IsMouseClicked(0) && ImGui::GetIO().KeyCtrl)
data.push_back(ImPlot::GetPlotMousePos());
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Diamond);
if (data.size() > 0)
ImPlot::PlotScatter("Points", &data[0].x, &data[0].y, data.size(), 0, 2 * sizeof(float));
if (ImPlot::IsPlotQueried() && data.size() > 0) {
ImPlotLimits range2 = ImPlot::GetPlotQuery();
int cnt = 0;
ImVec2 avg;
for (int i = 0; i < data.size(); ++i) {
if (range2.Contains(data[i])) {
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::PlotScatter("Average", &avg.x, &avg.y, 1);
}
}
ImPlot::PopStyleVar();
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] = sin(arg);
y_data2[i] = y_data1[i] * -0.6f + sin(2 * arg) * 0.4f;
y_data3[i] = y_data2[i] * -0.6f + sin(3 * arg) * 0.4f;
}
ImGui::BulletText("Query the first plot to render a subview in the second plot (see above for controls).");
ImPlot::SetNextPlotLimits(0,0.01f,-1,1);
ImPlotAxisFlags flgs = ImPlotAxisFlags_Default & ~ImPlotAxisFlags_TickLabels;
ImPlotLimits query;
if (ImPlot::BeginPlot("##View1",NULL,NULL,ImVec2(-1,150), ImPlotFlags_Default | ImPlotFlags_Query, flgs, flgs)) {
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), 0, 0, 0)) {
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("Drag and Drop")) {
srand((int)(10000000 * ImGui::GetTime()));
static bool paused = false;
static bool init = true;
static ScrollingData data[10];
static bool show[10];
if (init) {
for (int i = 0; i < 10; ++i) {
show[i] = false;
}
init = false;
}
ImGui::BulletText("Drag data items from the left column onto the plot.");
ImGui::BeginGroup();
if (ImGui::Button("Clear", ImVec2(100, 0))) {
for (int i = 0; i < 10; ++i) {
show[i] = false;
data[i].Data.shrink(0);
data[i].Offset = 0;
}
}
if (ImGui::Button(paused ? "Resume" : "Pause", ImVec2(100,0)))
paused = !paused;
ImGui::Separator();
for (int i = 0; i < 10; ++i) {
char label[8];
sprintf(label, "data_%d", i);
ImGui::Selectable(label, false, 0, ImVec2(100, 0));
if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
ImGui::SetDragDropPayload("DND_PLOT", &i, sizeof(int));
ImGui::TextUnformatted(label);
ImGui::EndDragDropSource();
}
}
ImGui::EndGroup();
ImGui::SameLine();
static float t = 0;
if (!paused) {
t += ImGui::GetIO().DeltaTime;
for (int i = 0; i < 10; ++i) {
if (show[i])
data[i].AddPoint(t, data[i].Data.empty() ?
0.25f + 0.5f * (float)rand() / float(RAND_MAX) :
data[i].Data.back().y + (0.005f + 0.0002f * (float)rand() / float(RAND_MAX)) * (-1 + 2 * (float)rand() / float(RAND_MAX)));
}
}
ImPlot::SetNextPlotLimitsX(t - 10, t, paused ? ImGuiCond_Once : ImGuiCond_Always);
if (ImPlot::BeginPlot("##DND", NULL, NULL, ImVec2(-1,300), ImPlotFlags_Default)) {
for (int i = 0; i < 10; ++i) {
if (show[i]) {
char label[8];
sprintf(label, "data_%d", i);
ImPlot::PlotLine(label, &data[i].Data[0].x, &data[i].Data[0].y, data[i].Data.size(), data[i].Offset, 2 * sizeof(float));
}
}
ImPlot::EndPlot();
}
if (ImGui::BeginDragDropTarget()) {
if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("DND_PLOT")) {
int i = *(int*)payload->Data;
show[i] = true;
}
ImGui::EndDragDropTarget();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Digital and Analog Signals")) {
static bool paused = false;
#define K_PLOT_DIGITAL_CH_COUNT 4
#define K_PLOT_ANALOG_CH_COUNT 4
static ScrollingData dataDigital[K_PLOT_DIGITAL_CH_COUNT];
static ScrollingData dataAnalog[K_PLOT_ANALOG_CH_COUNT];
static bool showDigital[K_PLOT_DIGITAL_CH_COUNT];
static bool showAnalog[K_PLOT_ANALOG_CH_COUNT];
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();
ImGui::BeginGroup();
if (ImGui::Button("Clear", ImVec2(100, 0))) {
for (int i = 0; i < K_PLOT_DIGITAL_CH_COUNT; ++i)
showDigital[i] = false;
for (int i = 0; i < K_PLOT_ANALOG_CH_COUNT; ++i)
showAnalog[i] = false;
}
if (ImGui::Button(paused ? "Resume" : "Pause", ImVec2(100,0)))
paused = !paused;
ImGui::SetNextItemWidth(100);
static float bitHeight = 8;
ImGui::DragFloat("##Bit Height", &bitHeight, 1, 5, 25, "%.0f px");
ImGui::SetNextItemWidth(100);
static float bitGap = 4;
ImGui::DragFloat("##Bit Gap", &bitGap, 1, 2, 20, "%.0f px");
ImGui::Separator();
for (int i = 0; i < K_PLOT_DIGITAL_CH_COUNT; ++i) {
char label[32];
sprintf(label, "digital_%d", i);
ImGui::Checkbox(label, &showDigital[i]);
if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
ImGui::SetDragDropPayload("DND_DIGITAL_PLOT", &i, sizeof(int));
ImGui::TextUnformatted(label);
ImGui::EndDragDropSource();
}
}
for (int i = 0; i < K_PLOT_ANALOG_CH_COUNT; ++i) {
char label[32];
sprintf(label, "analog_%d", i);
ImGui::Checkbox(label, &showAnalog[i]);
if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
ImGui::SetDragDropPayload("DND_ANALOG_PLOT", &i, sizeof(int));
ImGui::TextUnformatted(label);
ImGui::EndDragDropSource();
}
}
ImGui::EndGroup();
ImGui::SameLine();
static float t = 0;
if (!paused) {
t += ImGui::GetIO().DeltaTime;
//digital signal values
int i = 0;
if (showDigital[i])
dataDigital[i].AddPoint(t, sin(2*t) > 0.45);
i++;
if (showDigital[i])
dataDigital[i].AddPoint(t, sin(2*t) < 0.45);
i++;
if (showDigital[i])
dataDigital[i].AddPoint(t, fmod(t,5.0f));
i++;
if (showDigital[i])
dataDigital[i].AddPoint(t, sin(2*t) < 0.17);
//Analog signal values
i = 0;
if (showAnalog[i])
dataAnalog[i].AddPoint(t, sin(2*t));
i++;
if (showAnalog[i])
dataAnalog[i].AddPoint(t, cos(2*t));
i++;
if (showAnalog[i])
dataAnalog[i].AddPoint(t, sin(2*t) * cos(2*t));
i++;
if (showAnalog[i])
dataAnalog[i].AddPoint(t, sin(2*t) - cos(2*t));
}
ImPlot::SetNextPlotLimitsY(-1, 1);
ImPlot::SetNextPlotLimitsX(t - 10.0f, t, paused ? ImGuiCond_Once : ImGuiCond_Always);
if (ImPlot::BeginPlot("##Digital", NULL, NULL, ImVec2(-1,300), ImPlotFlags_Default)) {
for (int i = 0; i < K_PLOT_DIGITAL_CH_COUNT; ++i) {
if (showDigital[i]) {
char label[32];
sprintf(label, "digital_%d", i);
ImPlot::PushStyleVar(ImPlotStyleVar_DigitalBitHeight, bitHeight);
ImPlot::PushStyleVar(ImPlotStyleVar_DigitalBitGap, bitGap);
ImPlot::PlotDigital(label, &dataDigital[i].Data[0].x, &dataDigital[i].Data[0].y, dataDigital[i].Data.size(), dataDigital[i].Offset, 2 * sizeof(float));
ImPlot::PopStyleVar(2);
}
}
for (int i = 0; i < K_PLOT_ANALOG_CH_COUNT; ++i) {
if (showAnalog[i]) {
char label[32];
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::BeginDragDropTarget()) {
const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("DND_DIGITAL_PLOT");
if (payload) {
int i = *(int*)payload->Data;
showDigital[i] = true;
}
else
{
payload = ImGui::AcceptDragDropPayload("DND_ANALOG_PLOT");
if (payload) {
int i = *(int*)payload->Data;
showAnalog[i] = true;
}
}
ImGui::EndDragDropTarget();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Offset Data")) {
float xs[50], ys[50];
for (int i = 0; i < 50; ++i) {
xs[i] = 0.5 + 0.4 * cos(i/50.f * 6.28);
ys[i] = 0.5 + 0.4 * sin(i/50.f * 6.28);
}
static int offset = 0;
ImGui::SliderInt("Offset", &offset, -100, 100);
if (ImPlot::BeginPlot("##offset")) {
ImPlot::PlotLine("circle", xs, ys, 50, offset);
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Custom Styles")) {
static ImVec4 my_palette[3] = {
ImVec4(0.000f, 0.980f, 0.604f, 1.0f),
ImVec4(0.996f, 0.278f, 0.380f, 1.0f),
ImVec4(0.1176470593f, 0.5647059083f, 1.0f, 1.0f),
};
ImPlot::SetPalette(my_palette, 3);
ImPlot::PushStyleColor(ImPlotCol_FrameBg, IM_COL32(32,51,77,255));
ImPlot::PushStyleColor(ImPlotCol_PlotBg, ImVec4(0,0,0,0));
ImPlot::PushStyleColor(ImPlotCol_PlotBorder, ImVec4(0,0,0,0));
ImPlot::PushStyleColor(ImPlotCol_XAxis, IM_COL32(192, 192, 192, 192));
ImPlot::PushStyleColor(ImPlotCol_YAxis, IM_COL32(192, 192, 192, 192));
ImPlot::PushStyleVar(ImPlotStyleVar_LineWeight, 2);
ImPlot::SetNextPlotLimits(-0.5f, 9.5f, -0.5f, 9.5f);
if (ImPlot::BeginPlot("##Custom", NULL, NULL, ImVec2(-1,300), ImPlotFlags_Default & ~ImPlotFlags_Legend, 0)) {
float lin[10] = {8,8,9,7,8,8,8,9,7,8};
float bar[10] = {1,2,5,3,4,1,2,5,3,4};
float dot[10] = {7,6,6,7,8,5,6,5,8,7};
ImPlot::PlotBar("Bar", bar, 10, 0.5f);
ImPlot::PlotLine("Line", lin, 10);
ImPlot::PushStyleVar(ImPlotStyleVar_LineWeight, 0);
ImPlot::PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Square);
ImPlot::PlotLine("Dot", dot, 10);
ImPlot::PopStyleVar(2);
ImPlot::EndPlot();
}
ImPlot::PopStyleColor(5);
ImPlot::PopStyleVar();
ImPlot::RestorePalette();
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Custom Rendering")) {
if (ImPlot::BeginPlot("##CustomRend",NULL,NULL,ImVec2(-1,300))) {
ImVec2 cntr = ImPlot::PlotToPixels(ImVec2(0.5f, 0.5f));
ImVec2 rmin = ImPlot::PlotToPixels(ImVec2(0.25f, 0.75f));
ImVec2 rmax = ImPlot::PlotToPixels(ImVec2(0.75f, 0.25f));
ImPlot::PushPlotClipRect();
ImGui::GetWindowDrawList()->AddCircleFilled(cntr,20,IM_COL32(255,255,0,255),20);
ImGui::GetWindowDrawList()->AddRect(rmin, rmax, IM_COL32(128,0,255,255));
ImPlot::PopPlotClipRect();
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Benchmark")) {
static const int n_items = 100;
static BenchmarkItem items[n_items];
ImGui::BulletText("Make sure VSync is disabled.");
ImGui::BulletText("%d lines with %d points each @ %.3f FPS.",n_items,1000,ImGui::GetIO().Framerate);
SetNextPlotLimits(0,1,0,1, ImGuiCond_Always);
if (ImPlot::BeginPlot("##Bench",NULL,NULL,ImVec2(-1,300),ImPlotFlags_Default | ImPlotFlags_NoChild)) {
char buff[16];
for (int i = 0; i < 100; ++i) {
sprintf(buff, "item_%d",i);
ImPlot::PushStyleColor(ImPlotCol_Line, items[i].Col);
ImPlot::PlotLine(buff, items[i].Data, 1000);
ImPlot::PopStyleColor();
}
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
ImGui::End();
}
} // namespace ImPlot
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