1 files changed, 2 insertions, 0 deletions
diff --git a/src/types.h b/src/types.h
index b5f5fc3..aab3866 100644
--- a/src/types.h
+++ b/src/types.h
@@ -12,7 +12,9 @@ using Eigen::Vector3d;
 using Eigen::Vector4d;
 
 // A struct for storing measurements.
+typedef enum {REFLECTION,MONO,HEIGHT} measurement_type;
 typedef struct {
+    measurement_type z_type;
     int id;
     Vector3d source, reflection;
 } measurement_t;