lib/vector3.rb in gmath3D-0.2.1 vs lib/vector3.rb in gmath3D-0.2.2

@@ -35,13 +35,22 @@
     # [Input]
     #  _rhs_ should be Vector3.
     # [Output]
     #  return true if rhs equals myself.
     def ==(rhs)
+      return false if( !rhs.kind_of?(Vector3) )
       equals_inner(rhs)
     end
 
+    # For using Vector3 as hash key
+    def hash
+      [@x.to_f, @y.to_f, @z.to_f].hash
+    end
+    def eql?(rhs)
+      equals_inner(rhs)
+    end
+
     # [Input]
     #  _rhs_ should be Vector3.
     # [Output]
     #  return added result as Vector3.
     def +(rhs)
@@ -167,10 +176,9 @@
       return Matrix.column_vector([x,y,z])
     end
 
     private
     def equals_inner(rhs)
-      return false if( !rhs.kind_of?(Vector3) )
       return false if((self.x - rhs.x).abs > @tolerance) 
       return false if((self.y - rhs.y).abs > @tolerance) 
       return false if((self.z - rhs.z).abs > @tolerance) 
       true
     end