fix a issue that coordinate normalization for excellon is imperfect

gerberex/composition.py

@@ -138,7 +138,9 @@ class DrillComposition(Composition):
                     if num == t.number:
                         yield statement.to_excellon(self.settings)
             yield EndOfProgramStmt().to_excellon()
-        
+
+        self.settings.notation = 'absolute'
+        self.settings.zeros = 'trailing'
         with open(path, 'w') as f:
             gerberex.excellon.write_excellon_header(f, self.settings, self.tools)
             for statement in statements():

gerberex/dxf.py

@@ -475,9 +475,8 @@ class DxfFile(CamFile):
         self.statements.pitch = value
     
     def write(self, filename=None, filetype=FT_RX274X):
-        if self.settings.notation != 'absolute':
-            raise Exception('DXF file\'s notation must be absolute ')
-        
+        self.settings.notation = 'absolute'
+        self.settings.zeros = 'trailing'
         filename = filename if filename is not None else self.filename
         with open(filename, 'w') as f:
             if filetype == self.FT_RX274X:

gerberex/excellon.py

@@ -200,6 +200,8 @@ class ExcellonFileEx(ExcellonFile):
             self.units = 'metric'
     
     def write(self, filename=None):
+        self.notation = 'absolute'
+        self.zeros = 'trailing'
         filename = filename if filename is not None else self.filename
         with open(filename, 'w') as f:
             write_excellon_header(f, self.settings, [self.tools[t] for t in self.tools])