Class: Postsvg::Visitors::PsVisitor::PathState

Inherits:
Object
  • Object
show all
Defined in:
lib/postsvg/visitors/ps_visitor.rb

Overview

Path state: list of accumulated path commands and the current pen position. Kept as a separate inner class so the visitor body stays focused on dispatch + state mutations, not on path geometry bookkeeping.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PathState

Returns a new instance of PathState.



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 120

def initialize
  @commands = []
  @current_x = 0.0
  @current_y = 0.0
end

Instance Attribute Details

#commands ⇒ Object (readonly)

Returns the value of attribute commands.



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 118

def commands
  @commands
end

#current_x ⇒ Object (readonly)

Returns the value of attribute current_x.



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 118

def current_x
  @current_x
end

#current_y ⇒ Object (readonly)

Returns the value of attribute current_y.



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 118

def current_y
  @current_y
end

Instance Method Details

#arc_to(rx, ry, x_axis_rotation, large_arc, sweep, x, y) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 166

def arc_to(rx, ry, x_axis_rotation, large_arc, sweep, x, y)
  @commands << "A #{fmt(rx)} #{fmt(ry)} #{fmt(x_axis_rotation)} " \
               "#{large_arc ? 1 : 0} #{sweep ? 1 : 0} #{fmt(x)} #{fmt(y)}"
  @current_x = x.to_f
  @current_y = y.to_f
end

#close ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 173

def close
  @commands << "Z"
end

#curve_to(x1, y1, x2, y2, x3, y3) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 154

def curve_to(x1, y1, x2, y2, x3, y3)
  @commands << "C #{fmt(x1)} #{fmt(y1)} #{fmt(x2)} #{fmt(y2)} #{fmt(x3)} #{fmt(y3)}"
  @current_x = x3.to_f
  @current_y = y3.to_f
end

#curve_to_rel(dx1, dy1, dx2, dy2, dx3, dy3) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 160

def curve_to_rel(dx1, dy1, dx2, dy2, dx3, dy3)
  @commands << "c #{fmt(dx1)} #{fmt(dy1)} #{fmt(dx2)} #{fmt(dy2)} #{fmt(dx3)} #{fmt(dy3)}"
  @current_x += dx3.to_f
  @current_y += dy3.to_f
end

#empty? ⇒ Boolean

Returns:



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 126

def empty?
  @commands.empty?
end

#fmt(value) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 187

def fmt(value)
  FormatNumber.call(value)
end

#line_to(x, y) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 142

def line_to(x, y)
  @commands << "L #{fmt(x)} #{fmt(y)}"
  @current_x = x.to_f
  @current_y = y.to_f
end

#line_to_rel(dx, dy) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 148

def line_to_rel(dx, dy)
  @commands << "l #{fmt(dx)} #{fmt(dy)}"
  @current_x += dx.to_f
  @current_y += dy.to_f
end

#move_to(x, y) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 130

def move_to(x, y)
  @commands << "M #{fmt(x)} #{fmt(y)}"
  @current_x = x.to_f
  @current_y = y.to_f
end

#move_to_rel(dx, dy) ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 136

def move_to_rel(dx, dy)
  @commands << "m #{fmt(dx)} #{fmt(dy)}"
  @current_x += dx.to_f
  @current_y += dy.to_f
end

#reset ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 177

def reset
  @commands = []
  @current_x = 0.0
  @current_y = 0.0
end

#to_path_d ⇒ Object 



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# File 'lib/postsvg/visitors/ps_visitor.rb', line 183

def to_path_d
  @commands.join(" ")
end