initial import, >900commits predate this

external/imgui/imgui_plot_var.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "imgui/imgui.h"
+
+// USAGE
+// Call once a frame with current value
+// ImGui::PlotVar("Speed", current_speed);
+
+namespace ImGui {
+
+// Plot value over time
+// Pass FLT_MAX value to draw without adding a new value
+void	PlotVar(const char* label, float value, float scale_min = FLT_MAX, float scale_max = FLT_MAX, int buffer_size = 120);
+
+// Call this periodically to discard old/unused data
+void	PlotVarFlushOldEntries();
+
+}
+