lib/middleware/shift.rb in tracksperanto-2.9.5 vs lib/middleware/shift.rb in tracksperanto-2.9.6

@@ -1,9 +1,14 @@
 # -*- encoding : utf-8 -*-
 # This middleware moves the keyframs by a preset number of pixels
 class Tracksperanto::Middleware::Shift < Tracksperanto::Middleware::Base
-  attr_accessor :x_shift, :y_shift
-  cast_to_float :x_shift, :y_shift
+  
+  parameter :x_shift,  :cast => :float, :desc => "Amount of horizontal shift (in px)", :default => 0
+  parameter :y_shift,  :cast => :float, :desc => "Amount of vertical shift (in px)", :default => 0
+  
+  def self.action_description
+    "Move all the trackers by a specified number of pixels"
+  end
   
   def export_point(frame, float_x, float_y, float_residual)
     super(frame, float_x + @x_shift.to_f, float_y + @y_shift.to_f, float_residual)
   end