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-rw-r--r--src/modules/ekf_att_pos_estimator/estimator_utilities.cpp20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/modules/ekf_att_pos_estimator/estimator_utilities.cpp b/src/modules/ekf_att_pos_estimator/estimator_utilities.cpp
index b4767a0d3..29a8c8d1e 100644
--- a/src/modules/ekf_att_pos_estimator/estimator_utilities.cpp
+++ b/src/modules/ekf_att_pos_estimator/estimator_utilities.cpp
@@ -8,6 +8,7 @@
#ifdef EKF_DEBUG
#include <stdio.h>
+#include <stdarg.h>
static void
ekf_debug_print(const char *fmt, va_list args)
@@ -101,6 +102,25 @@ Vector3f operator*( Mat3f matIn, Vector3f vecIn)
return vecOut;
}
+// overload * operator to provide a matrix product
+Mat3f operator*( Mat3f matIn1, Mat3f matIn2)
+{
+ Mat3f matOut;
+ matOut.x.x = matIn1.x.x*matIn2.x.x + matIn1.x.y*matIn2.y.x + matIn1.x.z*matIn2.z.x;
+ matOut.x.y = matIn1.x.x*matIn2.x.y + matIn1.x.y*matIn2.y.y + matIn1.x.z*matIn2.z.y;
+ matOut.x.z = matIn1.x.x*matIn2.x.z + matIn1.x.y*matIn2.y.z + matIn1.x.z*matIn2.z.z;
+
+ matOut.y.x = matIn1.y.x*matIn2.x.x + matIn1.y.y*matIn2.y.x + matIn1.y.z*matIn2.z.x;
+ matOut.y.y = matIn1.y.x*matIn2.x.y + matIn1.y.y*matIn2.y.y + matIn1.y.z*matIn2.z.y;
+ matOut.y.z = matIn1.y.x*matIn2.x.z + matIn1.y.y*matIn2.y.z + matIn1.y.z*matIn2.z.z;
+
+ matOut.z.x = matIn1.z.x*matIn2.x.x + matIn1.z.y*matIn2.y.x + matIn1.z.z*matIn2.z.x;
+ matOut.z.y = matIn1.z.x*matIn2.x.y + matIn1.z.y*matIn2.y.y + matIn1.z.z*matIn2.z.y;
+ matOut.z.z = matIn1.z.x*matIn2.x.z + matIn1.z.y*matIn2.y.z + matIn1.z.z*matIn2.z.z;
+
+ return matOut;
+}
+
// overload % operator to provide a vector cross product
Vector3f operator%( Vector3f vecIn1, Vector3f vecIn2)
{