Class: Svgcode::GCode::Converter

Inherits:
Object
  • Object
show all
Defined in:
lib/svgcode/gcode/converter.rb

Constant Summary collapse

PX_PER_INCH = 
300
PX_PER_MM = 
PX_PER_INCH / 25.4

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts) ⇒ Converter

Returns a new instance of Converter.

Raises:

  • (ArgumentError) 


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# File 'lib/svgcode/gcode/converter.rb', line 13

def initialize(opts)
  raise ArgumentError.new if opts.nil? || opts[:max_y].nil?
  @finished = false
  @transforms = []
  @max_y = opts.delete(:max_y)
  @program = Program.new(opts)
  @metric = opts[:metric] != false
  @metric ? @program.metric! : @program.imperial!
  @program.feedrate!
end

Instance Attribute Details

#finished ⇒ Object (readonly)

Returns the value of attribute finished.



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# File 'lib/svgcode/gcode/converter.rb', line 11

def finished
  @finished
end

#max_y ⇒ Object (readonly)

Returns the value of attribute max_y.



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# File 'lib/svgcode/gcode/converter.rb', line 11

def max_y
  @max_y
end

#metric ⇒ Object (readonly)

Returns the value of attribute metric.



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# File 'lib/svgcode/gcode/converter.rb', line 11

def metric
  @metric
end

#program ⇒ Object (readonly)

Returns the value of attribute program.



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# File 'lib/svgcode/gcode/converter.rb', line 11

def program
  @program
end

#transforms ⇒ Object

Returns the value of attribute transforms.



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# File 'lib/svgcode/gcode/converter.rb', line 10

def transforms
  @transforms
end

Instance Method Details

#<<(svg_d) ⇒ Object 



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# File 'lib/svgcode/gcode/converter.rb', line 24

def <<(svg_d)
  svg_start = nil
  path = SVG::Path.new(svg_d)
  start = nil

  path.commands.each do |cmd|
    cmd.apply_transforms!(@transforms)
    cmd.absolute? ? cmd.flip_points_y!(@max_y) : cmd.negate_points_y!

    if metric?
      cmd.divide_points_by!(PX_PER_MM)
    else
      cmd.divide_points_by!(PX_PER_INCH)
    end

    if (cmd.name == :close || cmd.absolute?) && @program.relative?
      @program.absolute!
    elsif cmd.relative? && @program.absolute?
      @program.relative!
    end

    case cmd.name
    when :move
      start = cmd.relative? ? cmd.absolute(@program.pos) : cmd
      @program.go!(cmd.points.first.x, cmd.points.first.y)
    when :line
      @program.cut!(cmd.points.first.x, cmd.points.first.y)
    when :cubic
      cubic!(cmd)
    when :close
      @program.cut!(start.points.first.x, start.points.first.y)
      start = nil
    end
  end
end

#comment!(str) ⇒ Object 



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# File 'lib/svgcode/gcode/converter.rb', line 64

def comment!(str)
  @program.comment!(str)
end

#finish ⇒ Object 



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# File 'lib/svgcode/gcode/converter.rb', line 68

def finish
  unless @finished
    @program.clear!
    @program.go!(0, 0)
    @program.stop!
    @finished = true
  end
end

#metric? ⇒ Boolean 



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# File 'lib/svgcode/gcode/converter.rb', line 60

def metric?
  @metric
end

#to_s ⇒ Object 



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# File 'lib/svgcode/gcode/converter.rb', line 77

def to_s
  @program.to_s
end