make V3D size

mantidproject · Oct 16, 2024 · c79a13f · c79a13f
1 parent 734a62f
commit c79a13f
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diff --git a/Framework/Kernel/inc/MantidKernel/V3D.h b/Framework/Kernel/inc/MantidKernel/V3D.h
@@ -42,6 +42,12 @@ class MANTID_KERNEL_DLL V3D final {
   // explicit conversion into vector
   operator std::vector<double>() const { return std::vector<double>(m_pt.cbegin(), m_pt.cend()); }
 
+  /**
+    Number of components in V3D
+     @return 3
+  */
+  std::size_t size() const noexcept { return m_pt.size(); }
+
   /**
     Addtion operator
      @param v :: Vector to add

diff --git a/Framework/Kernel/test/V3DTest.h b/Framework/Kernel/test/V3DTest.h
@@ -23,6 +23,7 @@ class V3DTest : public CxxTest::TestSuite {
   Mantid::Kernel::V3D a, b, c, d;
 
 public:
+  void testSize() { TS_ASSERT_EQUALS(a.size(), 3); }
   void testEmptyConstructor() {
     // very important as a MD geometry rely on it later
     TS_ASSERT_EQUALS(a.X(), 0.0);