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Contents
# Implements the zip_curve_tuples method
module Tracksperanto::ZipTuples
# Zip arrays of "value at" tuples into an array of "values at" tuples
# (note the plural).
# The first value of each tuple will be the frame number
# and keyframes which are not present in all arrays will be discarded. For example:
#
# zip_curve_tuples( [[0, 12], [1, 23]], [[1, 12]]) #=> [[1, 23, 12]]
#
# We make use of the fact that setting an offset index in an array fills it with nils up to
# the index inserted
def zip_curve_tuples(*curves)
tuples = curves.inject([]) do | tuples, curve_of_at_and_value |
curve_of_at_and_value.each do | frame, value |
tuples[frame] = tuples[frame] ? (tuples[frame] << value) : [frame, value]
end
tuples
end
tuples.reject{|e| e.nil? || (e.length < (curves.length + 1)) }
end
end
Version data entries
20 entries across 20 versions & 1 rubygems