lib/music-transcription/model/link.rb in music-transcription-0.14.0 vs lib/music-transcription/model/link.rb in music-transcription-0.15.0

@@ -16,12 +16,16 @@
     
     def ==(other)
       self.class == other.class
     end
     
+    def transpose diff
+      self.clone.transpose! diff
+    end
+    
     def transpose! diff
-      # do nothing, of course
+      return self
     end
     
     def to_s; "="; end
   end
   
@@ -35,11 +39,15 @@
     
     def ==(other)
       self.class == other.class && @target_pitch == other.target_pitch
     end
     
+    def transpose diff
+      self.clone.transpose! diff
+    end
+    
     def transpose! diff
-      @target_pitch += diff
+      @target_pitch = @target_pitch.transpose(diff)
     end
     
     def to_s
       @link_char + @target_pitch.to_s
     end