render single point elements (#701)

lib/elements/fill.py

@@ -121,7 +121,12 @@ class Fill(EmbroideryElement):
     @property
     @cache
     def paths(self):
-        return self.flatten(self.parse_path())
+        paths = self.flatten(self.parse_path())
+        #ensure path length
+        for i, path in enumerate(paths):
+            if len(path) < 3:
+                paths[i] = [(path[0][0], path[0][1]), (path[0][0]+1.0, path[0][1]), (path[0][0], path[0][1]+1.0)]
+        return paths
 
     @property
     @cache

lib/elements/utils.py

@@ -26,7 +26,7 @@ def node_to_elements(node):  # noqa: C901
             return [SatinColumn(node)]
         else:
             elements = []
-            if element.get_style("fill", 'black') and not element.get_style('fill-opacity', 1) == "0":
+            if element.get_style("fill", "black") and not element.get_style('fill-opacity', 1) == "0":
                 if element.get_boolean_param("auto_fill", True):
                     elements.append(AutoFill(node))
                 else: