Class: Tracksperanto::Middleware::Base

Inherits:
Object
  • Object
show all
Includes:
BlockInit, Casts
Defined in:
lib/middleware/base.rb

Overview

The base middleware class works just like a Tracksperanto::Export::Base, but it only wraps another exporting object and does not get registered on it’s own as an export format. Middleware can be used to massage the tracks being exported in various interesting ways - like moving the coordinates, clipping the keyframes, scaling the whole export or even reversing the trackers to go backwards

Direct Known Subclasses

Golden, Scaler, Shift, Slipper

Instance Method Summary collapse

Methods included from Casts

#cast_to_float, #cast_to_int, #cast_to_string, included

Constructor Details

#initialize(exporter, *args_for_block_init) ⇒ Base

Returns a new instance of Base.



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# File 'lib/middleware/base.rb', line 8

def initialize(exporter, *args_for_block_init)
  @exporter = exporter
  super(*args_for_block_init)
end

Instance Method Details

#end_export ⇒ Object

Called on export end



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# File 'lib/middleware/base.rb', line 19

def end_export
  @exporter.end_export
end

#end_tracker_segment ⇒ Object

Called on tracker end



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# File 'lib/middleware/base.rb', line 30

def end_tracker_segment
  @exporter.end_tracker_segment
end

#export_point(at_frame_i, abs_float_x, abs_float_y, float_residual) ⇒ Object

Called for each tracker keyframe



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# File 'lib/middleware/base.rb', line 35

def export_point(at_frame_i, abs_float_x, abs_float_y, float_residual)
  @exporter.export_point(at_frame_i, abs_float_x, abs_float_y, float_residual)
end

#start_export(img_width, img_height) ⇒ Object

Called on export start



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# File 'lib/middleware/base.rb', line 14

def start_export( img_width, img_height)
  @exporter.start_export(img_width, img_height)
end

#start_tracker_segment(tracker_name) ⇒ Object

Called on tracker start, one for each tracker. Start of the next tracker signifies that the previous tracker has passed by



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# File 'lib/middleware/base.rb', line 25

def start_tracker_segment(tracker_name)
  @exporter.start_tracker_segment(tracker_name)
end