Class: JennCad::Exporters::OpenScadObject

Inherits:
Object
  • Object
show all
Defined in:
lib/jenncad/exporters/openscad.rb

Instance Method Summary collapse

Constructor Details

#initialize(cmd, args, children = [], modifier = nil) ⇒ OpenScadObject

Returns a new instance of OpenScadObject.



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# File 'lib/jenncad/exporters/openscad.rb', line 3

def initialize(cmd, args, children=[], modifier=nil)
  @command = cmd
  @args = args
  @modifier = modifier || ""

  case children
  when Array
    @children = children
  else
    @children = [children]
  end
end

Instance Method Details

#handle_args(args) ⇒ Object 



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# File 'lib/jenncad/exporters/openscad.rb', line 71

def handle_args(args)
  case args
  when String, Symbol
    return "\"#{args}\""
  when Array
    return args.map do |l|
      if l == nil
        0
      elsif l.kind_of? Array
        l # skipping check of 2-dmin Arrays for now (used in multmatrix)
      elsif l == 0
        0
      elsif l == l.to_i
        l.to_i
      else
        l.to_f
      end
    end
  when Hash
    res = []
    args.each do |k,v|
      if k.to_s == "fn"
        k = "$fn"
      end
      if v == nil
        next
      end
      if v.kind_of?(Symbol)
        v = v.to_s
      end
      if v.kind_of?(Array)
        v = handle_args(v)
      elsif !v.kind_of?(TrueClass) && !v.kind_of?(FalseClass) && v == v.to_i
        v = v.to_i
      elsif v.kind_of? BigDecimal
        v = v.to_f
      end
      if v.kind_of? String
        q = "\""
      else
        q = ""
      end
      res << "#{k}=#{q}#{v}#{q}"
    end
    res.join(",").gsub("size=","")
  else
    ""
  end
end

#handle_command(i = 1) ⇒ Object 



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# File 'lib/jenncad/exporters/openscad.rb', line 45

def handle_command(i=1)
  case @children.size
  when 0
    "#{@modifier}#{@command}(#{handle_args(@args)});"
  when 1
    "#{@modifier}#{@command}(#{handle_args(@args)})#{@children.first.handle_command(i+1)}"
  when (1..)
    res = "#{@modifier}#{@command}(#{handle_args(@args)}){"
    res += nl
    inner = @children.map do |c|
      next if c == nil
      c.handle_command(i+1)
    end
    res += tabs(i, inner.compact)
    res += nl
    res += tabs(i-1,["}"])+nl
    res
  end
end

#handle_module ⇒ Object 



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# File 'lib/jenncad/exporters/openscad.rb', line 38

def handle_module
  res = "module #{@args}(){"+nl
  res += tabs(1, @children.map{|c| c.handle_command(2) })
  res += "}"
  res
end

#nl ⇒ Object 



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# File 'lib/jenncad/exporters/openscad.rb', line 16

def nl
  "\n"
end

#tabs(i, a) ⇒ Object 



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# File 'lib/jenncad/exporters/openscad.rb', line 65

def tabs(i,a)
  a.map{ |l|
    "  " * i + l
  }.join(nl)
end

#to_s ⇒ Object 



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# File 'lib/jenncad/exporters/openscad.rb', line 20

def to_s
  case @command
  when nil
    ""
  when :head
    res = "$fn=64;"+nl
    @children.each do |c|
      res += c.to_s+nl
    end
    res
  when :module
    handle_module
  when String, Symbol
    handle_command
  else
  end
end