# File ../lib/roller/CWRP.rb, line 948 def apply_bumpiness(bumpiness) raise ArgumentError, "Bumpiness must be > 0" unless bumpiness > 0 reset_progress 'Applying bumpiness', @terrain_height.size @terrain_height.each do |row| row.map! { |height| height + ((rand() - rand()) * bumpiness) } increment_progress end nil end