Star feature works, testing is still pending

lib/squib/constants.rb

@@ -102,10 +102,13 @@ module Squib
           :font_size => :font_size,
           :height => :height,
           :hint => :hint,
+          :inner_radius => :inner_radius,
           :justify => :justify,
           :layout => :layout,
           :markup => :markup,
           :mask => :mask,
+          :n => :n,
+          :outer_radius => :outer_radius,
           :quotes => :quotes,
           :rect_radius => :radius,
           :spacing => :spacing,

lib/squib/graphics/cairo_context_wrapper.rb

@@ -23,7 +23,7 @@ module Squib
         :set_source, :scale, :render_rsvg_handle, :circle, :triangle, :line_to,
         :operator=, :show_page, :clip, :transform, :mask, :create_pango_layout,
         :antialias=, :curve_to, :matrix, :matrix=, :identity_matrix, :pango_layout_path,
-        :stroke_preserve, :target
+        :stroke_preserve, :target, :new_path, :fill_preserve
 
       # :nodoc:
       # @api private

lib/squib/graphics/shapes.rb

@@ -106,21 +106,22 @@ module Squib
     # @api private
     def star(x, y, n, angle, inner_radius, outer_radius, fill_color, stroke_color, stroke_width)
       use_cairo do |cc|
+        cc.new_path
         cc.translate(x, y)
         cc.rotate(angle)
         cc.translate(-x, -y)
-
-        # coords = []
-        # coords << [x, y - outer_radius]
-        # coords << [x, y - outer_radius]
-        # cc.move_to(*coords.first)
-        # cc.line_to(*coords[1..-1])
-
+        cc.move_to(x + outer_radius, y) #i = 0, so 
+        theta = Math::PI / n.to_f # i.e. (2*pi) / (2*n)
+        0.upto(2 * n) do |i|
+            radius = i.even? ? outer_radius : inner_radius
+            cc.line_to(x + radius * Math::cos(i * theta),
+                       y + radius * Math::sin(i * theta))
+        end
         cc.set_source_squibcolor(stroke_color)
         cc.set_line_width(stroke_width)
-        cc.stroke_preserve
+        cc.fill_preserve
         cc.set_source_squibcolor(fill_color)
-        cc.fill
+        cc.stroke
       end
     end
 

samples/draw_shapes.rb

@@ -25,8 +25,8 @@ Squib::Deck.new do
           stroke_width: 5.0, stroke_color: :cyan,
           fill_color: :burgundy
 
-  star x: 50, y: 1000, n: 5, inner_radius: 50, outer_radius: 100,
-       fill_color: :burgundy, stroke_color: :cyan, stroke_width: 8
+  star x: 300, y: 1000, n: 5, inner_radius: 10, outer_radius: 25,
+       fill_color: :burgundy, stroke_color: :cyan, stroke_width: 1
 
   save_png prefix: 'shape_'
 end