Class: CreateGCodeArrayFromSVGCommands

Inherits:
Object
  • Object
show all
Defined in:
lib/convert_svg_string_to_gcode/helpers/create_gcode_array_from_svg_commands.rb

Class Method Summary collapse

Class Method Details

.create_gcode_path_from_bezier(start_point, svg_command, step) ⇒ Object 



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# File 'lib/convert_svg_string_to_gcode/helpers/create_gcode_array_from_svg_commands.rb', line 36

def self.create_gcode_path_from_bezier(start_point, svg_command, step)

  p0x  = start_point[:x].to_f
  p0y  = start_point[:y].to_f
  cp0x = svg_command[:cp0x].to_f
  cp0y = svg_command[:cp0y].to_f
  cp1x = svg_command[:cp1x].to_f
  cp1y = svg_command[:cp1y].to_f
  p1x  = svg_command[:p1x].to_f
  p1y  = svg_command[:p1y].to_f

  t  = step

  gcode_array = []

  while t<1 do
    ax = ( (1 - t) * p0x ) + (t * cp0x)
    ay = ( (1 - t) * p0y ) + (t * cp0y)
    bx = ( (1 - t) * cp0x ) + (t * cp1x)
    by = ( (1 - t) * cp0y ) + (t * cp1y)
    cx = ( (1 - t) * cp1x ) + (t * p1x)
    cy = ( (1 - t) * cp1y ) + (t * p1y)

    dx = ( (1 - t) * ax ) + (t * bx)
    dy = ( (1 - t) * ay ) + (t * by)
    ex = ( (1 - t) * bx ) + (t * cx)
    ey = ( (1 - t) * by ) + (t * cy)

    new_point_x = ( (1 - t) * dx ) + (t * ex)
    new_point_y = ( (1 - t) * dy ) + (t * ey)
    gcode_array << "G1 X#{new_point_x} Y#{new_point_y} Z0"
    t+=step
  end
 return gcode_array, {x: p1x, y: p1y}
end

.draw_to_point(new_point) ⇒ Object 



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# File 'lib/convert_svg_string_to_gcode/helpers/create_gcode_array_from_svg_commands.rb', line 29

def self.draw_to_point(new_point)
  x_value = new_point[:x].to_f
  y_value = new_point[:y].to_f
  command = ["G1 X#{x_value} Y#{y_value} #{MakeblockXYConfig::Z_DOWN}"]
  return command, new_point
end

.move_to_point(new_point) ⇒ Object 



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# File 'lib/convert_svg_string_to_gcode/helpers/create_gcode_array_from_svg_commands.rb', line 22

def self.move_to_point(new_point)
  x_value = new_point[:x].to_f
  y_value = new_point[:y].to_f
  command = ["G0 X#{x_value} Y#{y_value} #{MakeblockXYConfig::Z_UP}"]
  return command, new_point
end

.perform(commands, options = {step: 0.20}) ⇒ Object 



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# File 'lib/convert_svg_string_to_gcode/helpers/create_gcode_array_from_svg_commands.rb', line 3

def self.perform(commands, options = {step: 0.20})
  start_point = nil
  step=options[:step]

  gcode_array = commands.map do |c|
    case c[:command]
    when ConversionConstants::MOVE
      command_array, start_point = move_to_point(c)
    when ConversionConstants::LINE_TO
      command_array, start_point = draw_to_point(c)
    when ConversionConstants::CURVE
      command_array, start_point = create_gcode_path_from_bezier(start_point, c,step)
    else
      throw Error
    end
    command_array
  end
end