X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FNavaids%2Fpositioned.hxx;h=088955fdca8c0c5a9586b63881e66346b83b238c;hb=76958a038251a697ad798bce630e7d793797cf78;hp=1c275dcf4db30ddcefe52340fcd23d5247394dad;hpb=c6045147544badd6daefdcab9d4de1ed6936533b;p=flightgear.git

diff --git a/src/Navaids/positioned.hxx b/src/Navaids/positioned.hxx
index 1c275dcf4..088955fdc 100644
--- a/src/Navaids/positioned.hxx
+++ b/src/Navaids/positioned.hxx
@@ -113,6 +113,22 @@ public:
     virtual bool pass(FGPositioned* aPos) const
     { return true; }
     
+    virtual Type minType() const
+    { return INVALID; }
+    
+    virtual Type maxType() const
+    { return INVALID; }
+    
+    /**
+     * Test if this filter has a non-empty type range
+     */
+    bool hasTypeRange() const;
+    
+    /**
+     * Assuming hasTypeRange is true, test if a given type passes the range
+     */
+    bool passType(Type aTy) const;
+    
     bool operator()(FGPositioned* aPos) const
     { return pass(aPos); }
   };