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-rw-r--r--src/rotationalparticle.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/rotationalparticle.cpp b/src/rotationalparticle.cpp
index d3b296587..a5473044f 100644
--- a/src/rotationalparticle.cpp
+++ b/src/rotationalparticle.cpp
@@ -25,10 +25,12 @@
#include "graphics.h"
#include "simpleanimation.h"
+#include <math.h>
+
#include "debug.h"
-static const double PI = 3.14159265;
-static const float PI2 = 2 * 3.14159265;
+static const double PI = M_PI;
+static const float PI2 = 2 * M_PI;
RotationalParticle::RotationalParticle(Map *const map,
Animation *const animation) :