WiimoteEmu: Fix gyroscope/quaternion conversion math.

dolphin-emu · Oct 11, 2022 · bf53e14 · bf53e14
1 parent 6eb1f8b
commit bf53e14
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Source/Core/Core/HW/WiimoteEmu/Dynamics.cpp b/Source/Core/Core/HW/WiimoteEmu/Dynamics.cpp
@@ -398,7 +398,9 @@ Common::Quaternion GetRotationFromAcceleration(const Common::Vec3& accel)
 
 Common::Quaternion GetRotationFromGyroscope(const Common::Vec3& gyro)
 {
-  return Common::Quaternion{1, gyro.x / 2, gyro.y / 2, gyro.z / 2};
+  const auto length = gyro.Length();
+  return (length != 0) ? Common::Quaternion::Rotate(length, gyro / length) :
+                         Common::Quaternion::Identity();
 }
 
 Common::Matrix33 GetRotationalMatrix(const Common::Vec3& angle)