obj_translate_scale.rb

# [usage]
# ruby move.rb -i {input_obj_dir} -x {x_move_amount} -y {y_move_amount} -z {z-move_amount}
# ruby move.rb -i {input_obj_dir} -s {scale}
# --> 全frameの全キーポイントを、 {x, y, z}分移動
# 
# note: translateとscaleを同時に渡すと、移動 >> scalingの順に実行される
# see also: 110行目あたり


require 'optparse'

src = ""
dst = ""
x = 0.0
y = 0.0
z = 0.0
scale = 1.0

OptionParser.new {|opt|

  opt.on('-i VAL') {|v| src = v }
  opt.on('-x VAL') {|v| x = v.to_f }
  opt.on('-y VAL') {|v| y = v.to_f }
  opt.on('-z VAL') {|v| z = v.to_f }
  opt.on('-s VAL') {|v| scale = v.to_f }
  
  opt.parse!(ARGV)
}

def delete_dir(path)
	
	dirlist = Dir::glob(path + "**/").sort {
	  |a,b| b.split('/').size <=> a.split('/').size
	}

	dirlist.each {|d|
	  Dir::foreach(d) {|f|
	    File::delete(d+f) if ! (/\.+$/ =~ f)
	  }
	  Dir::rmdir(d)
	}
end



if (src == "")
	
	p "no source input. aborted"
	p "usage is written on the top of move.rb"
	exit
	
end


if (x == 0.0 && y == 0.0 && z == 0.0 && scale == 0.0)
	p "no information for moving || scaling. aborted"
	p "usage is written on the top of move.rb"
	exit
end



dst = src + "_moved"
delete_dir(dst) if (File.exist?(dst))
Dir::mkdir(dst, 0700)


# -------
# .obj example

=begin

# Model file name: xxx
# Movie file name: xxx
# Frame: 0
# TotalFrame: 442

g model
v 1000, 71, 0

=end

src_aps_path = File.expand_path(src)

frames = Dir::entries(src_aps_path)

frames.each{|frame|

  cur_file_path = src+"/"+frame
	new_file_path = dst+"/"+frame

  next unless File.extname(cur_file_path) =~ /.obj/
	
	new_file = open(new_file_path, "w")
	
	open(cur_file_path) { |file|
  	while line = file.gets
			
			if (line =~ /^v/)
				
				# removing prefix, surfix
				line[0..1] = "" # removing "v "
				line.gsub!("\n", "")
				
				# x, y, z
				vertex = line.split(", ")
				vertex[0] = (vertex[0].to_f + x) * scale
				vertex[1] = (vertex[1].to_f + y) * scale
				vertex[2] = (vertex[2].to_f + z) * scale
				
				new_file.puts "v " + vertex.join(", ")
			else
				# そのままputs
				new_file.puts line
			end
  	end
	}
	
	new_file.close()
}