1 files changed, 12 insertions, 0 deletions
diff --git a/point3d.h b/point3d.h
index 2e37e42..5bf4212 100644
--- a/point3d.h
+++ b/point3d.h
@@ -3,6 +3,8 @@
 
 #include "math.h"
 
+#include <qglobal.h>
+
 struct Point3d
 {
     float x, y, z;
@@ -41,6 +43,16 @@ struct Point3d
     {
         return Point3d(x * f, y * f, z * f);
     }
+
+    float &operator[](unsigned int index) {
+        Q_ASSERT(index < 3);
+        return (&x)[index];
+    }
+
+    const float &operator[](unsigned int index) const {
+        Q_ASSERT(index < 3);
+        return (&x)[index];
+    }
 };
 
 inline float dot(const Point3d &a, const Point3d &b)