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-rw-r--r--src/Vector3.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/Vector3.h b/src/Vector3.h
index 346bc1bbb..168071469 100644
--- a/src/Vector3.h
+++ b/src/Vector3.h
@@ -384,6 +384,28 @@ template <> inline Vector3<int> Vector3<int>::Floor(void) const
+template <typename What>
+class VectorHasher
+{
+public:
+ /** Provides a hash of a vector's contents */
+ size_t operator()(const Vector3<What> & a_Vector) const
+ {
+ // Guaranteed to have no hash collisions for any 128x128x128 area
+ size_t Hash = 0;
+ Hash ^= static_cast<size_t>(a_Vector.x);
+ Hash <<= 8;
+ Hash ^= static_cast<size_t>(a_Vector.y);
+ Hash <<= 8;
+ Hash ^= static_cast<size_t>(a_Vector.z);
+ return Hash;
+ }
+};
+
+
+
+
+
template <typename T>
const double Vector3<T>::EPS = 0.000001;