1 files changed, 38 insertions, 0 deletions
diff --git a/io_export_dxf/model/model.py b/io_export_dxf/model/model.py
new file mode 100644
index 00000000..bff37339
--- /dev/null
+++ b/io_export_dxf/model/model.py
@@ -0,0 +1,38 @@
+
+class DxfDrawing(object):
+	"""
+	Represents intermediate model of DXF drawing. It is useful in iterating
+	through exported object and for easy change the DXF handling library.
+	"""
+	def __init__(self):
+		self._entities = {}
+		self._layers = {}
+		self._views = []
+		self._vports = []
+		self._blocks = []
+		
+	def isEmpty(self):
+		return len(self._entities) == 0
+
+	def addEntity(self, type, **kwargs):
+		if type not in self._entities:
+			self._entities[type] = []
+		self._entities[type].append(kwargs)
+
+	def addLayer(self, name, color):
+		self._layers[name] = color
+
+	def containsLayer(self, name):
+		return name in self._layers
+
+	def addBlock(self, block):
+		self._blocks.append(block)
+
+	def containsBlock(self, blockname):
+		return blockname in self._blocks
+
+	def convert(self, **kwargs):
+		""" Converts this drawing into DXF representation object """
+		raise NotImplementedError()
+	
+