Function Demo_CustomDataAndGetters

Source/3rdParty/implot/implot_demo.cpp:2490–2522

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void Demo_CustomDataAndGetters() {
    IMGUI_DEMO_MARKER("Custom/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, {ImPlotProp_Stride, sizeof(MyImPlot::Vector2f)});

        // custom getter example 1:
        ImPlot::PlotLineG("Spiral", MyImPlot::Spiral, nullptr, 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::PlotShadedG("Waves", MyImPlot::SineWave, &data1, MyImPlot::SawWave, &data2, 1000, {ImPlotProp_FillAlpha, 0.25f});

        // you can also pass C++ lambdas:
        // auto lambda = [](void* data, int idx) { ... return ImPlotPoint(x,y); };
        // ImPlot::PlotLine("My Lambda", lambda, data, 1000);

        ImPlot::EndPlot();
    }
}

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