some: replace hardcoded pi values with the same pi constant

We can't depend on M_PI existing after including cmath.

1 files changed, 2 insertions, 5 deletions

diff --git a/tracker-hydra/ftnoir_tracker_hydra.cpp b/tracker-hydra/ftnoir_tracker_hydra.cpp
index 1e3c1189..33156f85 100644
--- a/tracker-hydra/ftnoir_tracker_hydra.cpp
+++ b/tracker-hydra/ftnoir_tracker_hydra.cpp
@@ -1,6 +1,7 @@
 /* Copyright: "i couldn't care less what anyone does with the 5 lines of code i wrote" - mm0zct */
 #include "ftnoir_tracker_hydra.h"
 #include "opentrack/plugin-api.hpp"
+#include "opentrack-compat/pi-constant.hpp"
 #include <cstdio>
 #include <cmath>
 #ifdef _WIN32
@@ -9,10 +10,6 @@
 #endif
 #include <sixense.h>
 
-#ifndef M_PI
-#   define M_PI 3.14159265358979323846
-#endif
-
 Hydra_Tracker::Hydra_Tracker() : should_quit(false) {}
 
 #include <sixense_math.hpp>
@@ -42,7 +39,7 @@ void Hydra_Tracker::data(double *data)
     data[TX] = double(acd.controllers[0].pos[0])/50;
     data[TY] = double(acd.controllers[0].pos[1])/50;
     data[TZ] = double(acd.controllers[0].pos[2])/50;
-    static constexpr double r2d = 180/M_PI;
+    static constexpr double r2d = 180/OPENTRACK_PI;
     data[Yaw] = double(ypr[0]) * r2d;
     data[Pitch] = double(ypr[1]) * r2d;
     data[Roll] = double(ypr[2]) * r2d;