Class: Magick::RVG::PolyShape

Inherits:
Shape
  • Object
show all
Defined in:
lib/rvg/embellishable.rb

Overview

class Rect

Direct Known Subclasses

Polygon, Polyline

Instance Method Summary collapse

Methods included from Duplicatable

#deep_copy

Methods included from Transformable

#matrix, #rotate, #scale, #skewX, #skewY, #translate

Methods included from Stylable

#styles

Instance Method Details

#polypoints(points) ⇒ Object

Raises:

  • (ArgumentError) 


99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/rvg/embellishable.rb', line 99

def polypoints(points)
  case points.length
  when 1
    points = Array(points[0])
  when 2
    x_coords = Array(points[0])
    y_coords = Array(points[1])
    raise ArgumentError, 'array arguments must contain at least one point' unless !x_coords.empty? && !y_coords.empty?

    n = x_coords.length - y_coords.length
    short = n > 0 ? y_coords : x_coords
    olen = short.length
    n.abs.times { |x| short << short[x % olen] }
    points = x_coords.zip(y_coords).flatten!
  end
  n = points.length
  raise ArgumentError, "insufficient/odd number of points specified: #{n}" if n < 4 || n.odd?

  Magick::RVG.convert_to_float(*points)
end