extruded polygon

* finish implementation of extruded polygon

* draw side faces

* closes #8

lib/draw_solid_methods/draw_ExtrudedPolygon.rb

@@ -21,8 +21,53 @@ def defineFaces(entities, args)
       face = entities.add_face points
 
     end
+  end
+
+
+  def makeSideFaces(a, b, entities)
+
+    vertices = Array.new
 
+    (0..a.length-1).each do |ai|
+
+      if ai < a.length-1
+        vertices = [a[ai], b[ai], b[ai+1], a[ai+1]]
+      else
+        vertices = [a[ai], b[ai], b[0], a[0]]
+      end
+
+      face = entities.add_face vertices
+
+    end
   end
+
+
+  def connectFaces(entities, args)
+
+    zpoints = Array.new
+
+    args["ZXYSection"].each do |zxy|
+
+      points = Array.new
+
+      args["XYPoint"].each do |xy|
+
+        x = xy["x"]*zxy["scale"] + zxy["x"]
+        y = xy["y"]*zxy["scale"] + zxy["y"]
+
+        point = Geom::Point3d.new(x, y, zxy["z"])        
+        points << point
+      end
+
+      zpoints << points
+
+    end
+
+    (0..zpoints.length-2).each do |p|
+      makeSideFaces(zpoints[p], zpoints[p+1], entities)
+    end
+  end
+
 
   def reverseFacesIfInward(entities)
     for e in entities
@@ -35,8 +80,9 @@ def reverseFacesIfInward(entities)
   group = entities.add_group
   entities = group.entities
   defineFaces entities, args
+  connectFaces entities, args
 
-  #reverseFacesIfInward(entities)
+  reverseFacesIfInward(entities)
 
   group