Class: Gerber::Layer::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/gerber/layer/parser.rb

Constant Summary collapse

DCodeError = 
Class.new(ParseError)

Instance Attribute Summary collapse

Accessors collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/gerber/layer/parser.rb', line 14

def initialize(*args)
		super

		@coordinate_mode = :absolute
		@dcode = 2	# off
		@gcode = 1	# linear interpolation
		@layer = Gerber::Layer.new
		@position = Point[0,0]
		@quadrant_mode = :single
		@repeat = Vector[1,1]
		@step = Vector[0,0]
		@units = nil
end

Instance Attribute Details

#coordinate_mode ⇒ Object (readonly)

Returns the value of attribute coordinate_mode.



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# File 'lib/gerber/layer/parser.rb', line 9

def coordinate_mode
  @coordinate_mode
end

#current_aperture ⇒ Object

Returns the value of attribute current_aperture.



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# File 'lib/gerber/layer/parser.rb', line 8

def current_aperture
  @current_aperture
end

#layer ⇒ Object (readonly)

Returns the value of attribute layer.



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# File 'lib/gerber/layer/parser.rb', line 10

def layer
  @layer
end

#position ⇒ Object (readonly)

Returns the value of attribute position.



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# File 'lib/gerber/layer/parser.rb', line 11

def position
  @position
end

#quadrant_mode ⇒ Object (readonly)

Returns the value of attribute quadrant_mode.



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# File 'lib/gerber/layer/parser.rb', line 12

def quadrant_mode
  @quadrant_mode
end

Instance Method Details

#<<(arg) ⇒ Object

Raises:



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# File 'lib/gerber/layer/parser.rb', line 32

def <<(arg)
		raise ParseError, "Must set an aperture before generating geometry" unless self.current_aperture
		self.layer.geometry[current_aperture] << arg if is_valid_geometry(arg)
end

#apply_units(a) ⇒ Object

Raises:



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# File 'lib/gerber/layer/parser.rb', line 200

def apply_units(a)
		raise ParseError, "Units must be set before specifying coordinates" unless @units
		return nil unless a
		(@units == 'inch') ? a.inch : a.mm
end

#is_valid_geometry(arg) ⇒ Object 



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# File 'lib/gerber/layer/parser.rb', line 28

def is_valid_geometry(arg)
		arg.kind_of?(Line) || arg.kind_of?(Point) || arg.kind_of?(Arc)
end

#name ⇒ String

Returns The name of the current Gerber::Layer.

Returns:



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# File 'lib/gerber/layer/parser.rb', line 44

def name
		self.layer.name
end

#name=(name) ⇒ Object

Set the name of the current Gerber::Layer

Parameters:

  • name (String) —

    An ASCII string to set the name to



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# File 'lib/gerber/layer/parser.rb', line 50

def name=(name)
		self.layer.name = name
end

#parse_dcode(s) ⇒ Object 



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# File 'lib/gerber/layer/parser.rb', line 74

def parse_dcode(s)
		/D(\d{2,3})/ =~ s
		dcode = $1.to_i
		case dcode
 when 1, 2, 3
			@dcode = dcode
 when 10...999
			self.current_aperture = dcode
 else
			raise ParseError, "Invalid D Code #{dcode}"
		end
end

#parse_g1(x, y, dcode) ⇒ Object 



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# File 'lib/gerber/layer/parser.rb', line 128

def parse_g1(x, y, dcode)
		point = Point[apply_units(x) || @position.x, apply_units(y) || @position.y]
		case dcode
 when 1
			line = Geometry::Line[@position, point]
			self << line
			@position = point
 when 2
			@position = point
 when 3
			self << point
			@position = point
 else
			raise DCodeError, "Invalid D parameter (#{dcode}) in G1"
		end
end

#parse_g2(x, y, i, j, dcode) ⇒ Object

Raises:



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# File 'lib/gerber/layer/parser.rb', line 145

def parse_g2(x, y, i, j, dcode)
		raise DCodeError, "In G2 dcode must be either 1 or 2" unless [1, 2].include? dcode
		if 1 == dcode
 x, y, i, j = [x, y, i, j].map {|a| apply_units(a)}
 startPoint = if self.quadrant_mode == :single
			# start and end are swapped in clockwise mode (Geometry::Arc defaults to counterclockwise)
			# i and j should have the same signs as the x and y components of the vector from the startpoint to the endpoint
			if self.coordinate_mode == :absolute
  delta = Point[x, y] - @position
  i = i * (delta.x<=>0)
  j = j * (delta.y<=>0)
  Point[x, y]
			elsif self.coordinate_mode == :incremental
  i = i * (x<=>0)
  j = j * (y<=>0)
  @position + Point[x, y]
			end
 elsif @quadrant_mode == :multi
			Point[x, y]
 else
			raise ParseError, "Unrecognized quadrant mode: #{self.quadrant_mode}"
 end
 arc = Geometry::Arc.new(@position + Point[i, j], startPoint, @position)
 self << arc
 @position = arc.first
		end
end

#parse_g3(x, y, i, j, dcode) ⇒ Object

Raises:



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# File 'lib/gerber/layer/parser.rb', line 173

def parse_g3(x, y, i, j, dcode)
		raise DCodeError, "In G3 dcode must be either 1 or 2" unless [1, 2].include? dcode
		if 1 == dcode
 x, y, i, j = [x, y, i, j].map {|a| apply_units(a)}
 endPoint = if self.quadrant_mode == :single
			# i and j should have the same signs as the x and y components of the vector from the startpoint to the endpoint
			if self.coordinate_mode == :absolute
  delta = Point[x, y] - @position
  i = i * (delta.x<=>0)
  j = j * (delta.y<=>0)
  Point[x, y]
			elsif self.coordinate_mode == :incremental
  i = i * (x<=>0)
  j = j * (y<=>0)
  @position + Point[x, y]
			end
 elsif @quadrant_mode == :multi
			Point[x, y]
 else
			raise ParseError, "Unrecognized quadrant mode: #{self.quadrant_mode}"
 end
 arc = Geometry::Arc.new(@position + Point[i, j], @position, endPoint)
 self << arc
 @position = arc.last
		end
end

#parse_gcode(gcode, x = nil, y = nil, i = nil, j = nil, dcode = nil) ⇒ Object 



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# File 'lib/gerber/layer/parser.rb', line 87

def parse_gcode(gcode, x=nil, y=nil, i=nil, j=nil, dcode=nil)
		gcode = gcode ? gcode.to_i : @gcode
		dcode = dcode ? dcode.to_i : @dcode
		case gcode
 when 1, 55  # G55 is deprecated, but behaves like G01
			parse_g1(x, y, dcode)
			@dcode = dcode
			@gcode = gcode
 when 2
			parse_g2(x, y, i, j, dcode)
			@dcode = dcode
			@gcode = gcode
 when 3
			parse_g3(x, y, i, j, dcode)
			@dcode = dcode
			@gcode = gcode
 when 4  # G04 is used for single-line comments. Ignore the block and carry on.
 when 36
			p "enable outline fill"
 when 37
			p "disable outline fill"
 when 54
			raise DCodeError, "G54 requires a D code (found #{x}, #{y}, #{dcode})" unless dcode
			self.current_aperture = dcode.to_i
 when 70
			set_inches
 when 71
			set_millimeters
 when 74
			@quadrant_mode = :single
 when 75
			@quadrant_mode = :multi
 when 90
			@coordinate_mode = :absolute
 when 91
			@coordinate_mode = :incremental
 else
			raise ParseError, "Unrecognized GCode #{gcode}"
		end
end

#polarity ⇒ Symbol

Returns The polarity setting of the current Gerber::Layer (:dark or :clear).

Returns:

  • (Symbol) —

    The polarity setting of the current Gerber::Layer (:dark or :clear)



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# File 'lib/gerber/layer/parser.rb', line 55

def polarity
		self.layer.polarity
end

#polarity=(polarity) ⇒ Object

Set the polarity of the current Gerber::Layer

Parameters:

  • polarity (Symbol) —

    Set the current polarity to either :clear or :dark



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# File 'lib/gerber/layer/parser.rb', line 61

def polarity=(polarity)
		self.layer.polarity = polarity
end

#set_inches ⇒ Object 



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# File 'lib/gerber/layer/parser.rb', line 65

def set_inches
		@units = 'inch'
end

#set_millimeters ⇒ Object 



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# File 'lib/gerber/layer/parser.rb', line 69

def set_millimeters
		@units = 'millimeters'
end