Class: Sunniesnow::Tools::SvgPath::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/sscharter/tools/svg_path.rb

Instance Method Summary collapse

Constructor Details

#initialize(name, parameters, follow_up = name) ⇒ Command

Returns a new instance of Command.

Parameters:

  • name (Symbol)
  • parameters (Array<Symbol>)
  • follow_up (Symbol) (defaults to: name) 


318
319
320
321
322
 
# File 'lib/sscharter/tools/svg_path.rb', line 318

def initialize name, parameters, follow_up = name
	@name = name
	@parameters = parameters
	@follow_up = follow_up
end

Instance Method Details

#parse(path, tokens) ⇒ void

This method returns an undefined value.

Parameters:

  • path (Path)
  • tokens (Array<String>) 


327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
 
# File 'lib/sscharter/tools/svg_path.rb', line 327

def parse path, tokens
	relative = (?a..?z).include? tokens.shift
	name = @name.to_sym
	begin
		arguments = @parameters.map do |parameter|
			case parameter
			when :point
				point = Vector2D.new tokens.shift.to_f, tokens.shift.to_f
				point += path.current if relative
				point
			when :point_x
				x = tokens.shift.to_f
				Vector2D.new relative ? path.current.x + x : x, path.current.y
			when :point_y
				y = tokens.shift.to_f
				Vector2D.new path.current.x, relative ? path.current.y + y : y
			when :vector
				Vector2D.new tokens.shift.to_f, tokens.shift.to_f
			when :number
				tokens.shift.to_f
			when :boolean
				raise "Invalid boolean: #{tokens.first}" unless %w[0 1].include? tokens.first
				tokens.shift == ?1
			end
		end
		path.public_send name, *arguments
		name = @follow_up.to_sym
	end until tokens.empty? || tokens.first =~ /[a-zA-Z]/
end