Write polygons to macros

gerber/am_statements.py

@@ -461,6 +461,11 @@ class AMPolygonPrimitive(AMPrimitive):
     ------
     ValueError, TypeError
     """
+    
+    @classmethod
+    def from_primitive(cls, primitive):
+        return cls(5, 'on', primitive.sides, primitive.position, primitive.diameter, primitive.rotation)
+    
     @classmethod
     def from_gerber(cls, primitive):
         modifiers = primitive.strip(' *').split(",")

gerber/primitives.py

@@ -736,6 +736,10 @@ class Polygon(Primitive):
     @property 
     def flashed(self):
         return True
+    
+    @property
+    def diameter(self):
+        return self.radius * 2
 
     @property
     def bounding_box(self):
@@ -759,6 +763,20 @@ class Polygon(Primitive):
             points.append(rotate_point((self.position[0] + self.radius, self.position[1]), offset + da * i, self.position))
         
         return points
+    
+    def equivalent(self, other, offset):
+        '''
+        Is this the outline the same as the other, ignoring the position offset?
+        '''
+        
+        # Quick check if it even makes sense to compare them
+        if type(self) != type(other) or self.sides != other.sides or self.radius != other.radius:
+            return False
+
+        equiv_pos = tuple(map(add, other.position, offset))
+
+        return nearly_equal(self.position, equiv_pos)
+
 
 class AMGroup(Primitive):
     """

gerber/render/rs274x_backend.py

@@ -2,7 +2,7 @@
 from .render import GerberContext
 from ..am_statements import *
 from ..gerber_statements import *
-from ..primitives import AMGroup, Arc, Circle, Line, Outline, Rectangle
+from ..primitives import AMGroup, Arc, Circle, Line, Outline, Polygon, Rectangle
 from copy import deepcopy
 
 class AMGroupContext(object):
@@ -28,6 +28,8 @@ class AMGroupContext(object):
                 self._render_rectangle(primitive)
             elif isinstance(primitive, Line):
                 self._render_line(primitive)
+            elif isinstance(primitive, Polygon):
+                self._render_polygon(primitive)
             else:
                 raise ValueError('amgroup')
 
@@ -53,6 +55,9 @@ class AMGroupContext(object):
      
     def _render_outline(self, outline):
         self.statements.append(AMOutlinePrimitive.from_primitive(outline))
+        
+    def _render_polygon(self, polygon):
+        self.statements.append(AMPolygonPrimitive.from_primitive(polygon))
     
     def _render_thermal(self, thermal):
         pass