Module: STL

Defined in:
lib/stl.rb,
lib/stl/parser.rb

Defined Under Namespace

Classes: Parser

Class Method Summary collapse

Class Method Details

.read(filename) ⇒ STL

Read an STL file

Parameters:

  • filename (String) —

    The path to the file to read

Returns:

  • (STL) —

    the resulting STL object



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# File 'lib/stl.rb', line 7

def self.read(filename)
	File.open(filename, 'r') {|f| STL::Parser.parse(f) }
end

.write(filename, faces, format = :binary) ⇒ Object

Write to an STL file

Parameters:

  • filename (String) —

    The path to write to

  • faces (Array) —

    An array of faces to write: [[Normal, Triangle], …]

  • format (Symbol) (defaults to: :binary) —

    Pass :ascii to write an ASCII formatted file, and :binary to write a binary file



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# File 'lib/stl.rb', line 15

def self.write(filename, faces, format=:binary)
	File.open(filename, 'w') do |file|
 if format == :ascii
		file.puts 'solid '
		faces.each do |normal, triangle|
  file.puts "    facet normal %E %E %E" % [*normal]
  file.puts "\touter loop"
  triangle.points.each do |point|
			file.puts "\t    vertex %E %E %E" % [*point]
  end
  file.puts "\tendloop"
  file.puts '    endfacet'
		end
		file.puts 'endsolid '
 elsif format == :binary
		file.write 'STL Ruby'.ljust(80, "\0")	# A meager header
		file.write [faces.length].pack('V')	# The triangle count

		faces.each do |normal, triangle|
  file.write normal.to_a.pack("FFF")

  triangle.points.each do |point|
			file.write point.to_a.pack("FFF")
  end

  file.write "\0\0"
		end
 end
	end
end