ImPlot Demos

This repository contains toy ImPlot applications that demonstrate some of the library's functionality. The demos here are more sophisticated than those provided in implot_demo.h, and may rely on third-party libraries that would otherwise clutter ImPlot's main repository. Use these examples as a starting point for your application and to familiarize yourself with ImPlot, but do not assume all code (e.g. signal processing algorithms) to be perfectly correct or optimal.

Requirements

• OpenGL
• C++17 compiler

Note: Compiled and tested with MSVC. Minor changes to CMakeLists.txt may be required to support other compilers. If you make a fix, please submit a PR.

Build Instructions

1. Clone this repository, ImPlot, and ImGui into a parent directory (name doesn't matter):

mkdir root
cd root
git clone https://github.com/epezent/implot_demos
git clone https://github.com/epezent/implot
git clone https://github.com/ocornut/imgui

• root/
  • imgui/
  • implot/
  • implot_demos/

2. Build with CMake, e.g.:

cd implot_demos
mkdir build
cd build
cmake ..
cmake --build . --config Release

Demos

Demo	Description	Image
demo.cpp	Main demo. Displays the ImPlot (and ImGui) library supplied demo windows.
filter.cpp	Simple filter toy for educational purposes. Displays time domain input/output signals, and the frequency domain transfer function, amplitude spectrum, etc.
spectrogram.cpp	Realtime audio spectrogram and visualizer with device playback. Pass in an audio file at the command line: ./spectrogram.exe ./aphex_twin_formula.wav (see resources/audio folder). Recommend compiling with ImPlot backends branch.
maps.cpp	OpenStreetMap world map viewer. Downloads and displays zoomable tile maps in a plot.
mandel.cpp	Realtime Mandelbrot viewer using AVX2 and OpenMP acceleration. Recommend compiling with ImPlot backends branch.
perlin.cpp	Renders perlin noise in a heatmap.
graph.cpp	Simple graphing calculator using exprtk expression evaluator.
stocks.cpp	Downloads and displays historical stock data from Yahoo Finance.

Contributing

Have you created something awesome with ImPlot? If so, please consider submitting a PR with a minimal working example of your application as a demo. Use the following guidelines:

• Modify your ImPlot/ImGui code so that it subclasses common/App.h (see any existing demos).
• Try to contain your demo to a single file located in demos/.
• Indicate your authorship and any helpful documentation at the top of your demo source file.
• Add dependencies with CMake FetchContent (preferred), git submodules, or manually to the 3rdparty/ folder (include the license).
• If your demo requires resources (audio, images, etc.), add them to the resources/ folder. Keep it simple!
• Screenshots and/or GIFs with your PR are helpful.