diamond_arrow.rb in wxruby3-shapes-0.9.5

- old
+ new

@@ -3,31 +3,26 @@
 
 require 'wx/shapes/arrows/solid_arrow'
 
 module Wx::SF
 
+  # Class extends the Wx::SolidArrow class and encapsulates
+  # solid diamond arrow shapes.
   class DiamondArrow < SolidArrow
 
     class << self
 
-      def diamond_arrow
-        @diamond_arrow ||= [Wx::RealPoint.new(0,0), Wx::RealPoint.new(10,4), Wx::RealPoint.new(20,0), Wx::RealPoint.new(10,-4)]
+      def arrow(ratio)
+        x = ratio*10; y = ratio*5
+        [Wx::RealPoint.new(0,0), Wx::RealPoint.new(x, y), Wx::RealPoint.new(2*x,0), Wx::RealPoint.new(x,-y), Wx::RealPoint.new(2*x,0)]
       end
 
     end
 
-    # Draw arrow shape at the end of a virtual line.
-    # @param [Wx::RealPoint] from Start of the virtual line
-    # @param [Wx::RealPoint] to End of the virtual line
-    # @param [Wx::DC] dc Device context for drawing
-    def draw(from, to, dc)
-      rarrow = translate_arrow(DiamondArrow.diamond_arrow, from, to)
-      dc.with_pen(@pen) do |dc|
-        dc.with_brush(@fill) do |dc|
-          dc.draw_polygon(rarrow)
-        end
-      end
+    def vertices
+      @vertices ||= DiamondArrow.arrow(@ratio)
     end
+    protected :vertices
 
   end
 
 end