Add `Circle` class

2 files changed, 29 insertions, 0 deletions

diff --git a/lib/ruby2d.rb b/lib/ruby2d.rb
index 823512f..6dc72dc 100644
--- a/lib/ruby2d.rb
+++ b/lib/ruby2d.rb
@@ -7,6 +7,7 @@ require 'ruby2d/window'
 require 'ruby2d/dsl'
 require 'ruby2d/quad'
 require 'ruby2d/line'
+require 'ruby2d/circle'
 require 'ruby2d/rectangle'
 require 'ruby2d/square'
 require 'ruby2d/triangle'
diff --git a/lib/ruby2d/circle.rb b/lib/ruby2d/circle.rb
new file mode 100644
index 0000000..4f87828
--- /dev/null
+++ b/lib/ruby2d/circle.rb
@@ -0,0 +1,28 @@
+# circle.rb
+
+module Ruby2D
+  class Circle
+    include Renderable
+
+    attr_reader :color
+    attr_accessor :x, :y, :radius, :sectors
+
+    def initialize(opts = {})
+      @x         = opts[:x]       || 25
+      @y         = opts[:y]       || 25
+      @radius    = opts[:radius]  || 25
+      @sectors   = opts[:sectors] || 20
+      @z         = opts[:z]       || 0
+      self.color = opts[:color]   || 'white'
+      add
+    end
+
+    def color=(c)
+      @color = Color.from(c)
+    end
+
+    def contains?(x, y)
+      Math.sqrt((x - @x)**2 + (y - @y)**2) <= @radius
+    end
+  end
+end