Implement interface for using web plotter from C++
It's not actually usable yet due to ODR violations created by
abseil being compiled into libwebrtc_full.a, but it does work based
on testing I've done with using websockets for data transfer.
Change-Id: I574570c7b5c85df9e53321bfb971a608d20b9803
diff --git a/frc971/analysis/in_process_plotter_demo.cc b/frc971/analysis/in_process_plotter_demo.cc
new file mode 100644
index 0000000..492ddfa
--- /dev/null
+++ b/frc971/analysis/in_process_plotter_demo.cc
@@ -0,0 +1,42 @@
+#include "frc971/analysis/in_process_plotter.h"
+
+#include "aos/init.h"
+
+// To run this example, do:
+// bazel run -c opt //frc971/analysis:in_process_plotter_demo
+// And then open localhost:8080, select "C++ Plotter" from the drop-down, and
+// then select "TITLE!" or "Trig Functions" from the second drop-down to see
+// each plot.
+int main(int argc, char *argv[]) {
+ aos::InitGoogle(&argc, &argv);
+ frc971::analysis::Plotter plotter;
+ plotter.Title("TITLE!");
+ plotter.AddFigure("Fig Foo");
+ plotter.ShareXAxis(true);
+ plotter.AddLine({1, 2, 3, 4, 5}, {1, 2, 3, 4, 5}, "y = x");
+ plotter.AddLine({5, 4, 3, 2, 1}, {1, 2, 3, 4, 5}, "y = -x");
+ plotter.YLabel("Y Axis");
+ plotter.AddFigure("Fig Bar");
+ plotter.ShareXAxis(true);
+ plotter.AddLine({1, 2, 3}, {3, 4, 5}, "y = x + 2");
+ plotter.XLabel("X Axis (Linked to both above plots)");
+ plotter.Publish();
+
+ plotter.Title("Trig Functions");
+
+ plotter.AddFigure("Sin & Cos");
+ std::vector<double> x;
+ std::vector<double> sinx;
+ std::vector<double> cosx;
+ constexpr int kNumPoints = 100000;
+ for (int ii = 0; ii < kNumPoints; ++ii) {
+ x.push_back(ii * 2 * M_PI / kNumPoints);
+ sinx.push_back(std::sin(x.back()));
+ cosx.push_back(std::cos(x.back()));
+ }
+ plotter.AddLine(x, sinx, "sin(x)");
+ plotter.AddLine(x, cosx, "cos(x)");
+ plotter.Publish();
+
+ plotter.Spin();
+}