fix problem with outermost edges on boundary polygons not being gener…

…ated

lib/kaleidoscope/pattern.rb

@@ -51,6 +51,7 @@ def build_at(seed, increment, &validator)
 
       validator ||= proc { |pt| true }
       seeds = []
+      valid_edges_generated = false
 
       @tile.phase_count.times do |n|
         data = @tile.phase(n)
@@ -81,11 +82,13 @@ def build_at(seed, increment, &validator)
             poly = (@poly_map[@dict.canonical(trans.apply(center))] ||= Polygon.new)
             poly.outside! unless inside
             valid_edges.each { |edge, neighbor| poly.edges[edge] = neighbor }
+            valid_edges_generated = true
           end
         end
 
-        neighbor = @dict.canonical(trans.apply(data[:neighbor]))
-        seeds << neighbor if validator[neighbor]
+        if valid_edges_generated
+          seeds << @dict.canonical(trans.apply(data[:neighbor]))
+        end
       end
 
       return seeds

test/pattern_test.rb

@@ -73,6 +73,6 @@ def test_generate_should_mark_edges_as_outside_when_they_are_not_fully_inside_th
   def test_generate_should_cover_all_seed_sites_within_the_bounds
     p = Pattern.new(6, 3)
     p.generate! { |pt| pt.x.between?(-1.01, 3.01) && pt.y.between?(-1.01, 3.01) }
-    assert_equal 49, p.polygons.length
+    assert_equal 50, p.polygons.length
   end
 end