Codestyle & removal unused imports

cura/Layer.py

@@ -1,10 +1,8 @@
-from .LayerPolygon import LayerPolygon
-
-from UM.Math.Vector import Vector
 from UM.Mesh.MeshBuilder import MeshBuilder
 
 import numpy
 
+
 class Layer:
     def __init__(self, layer_id):
         self._id = layer_id
@@ -80,8 +78,7 @@ class Layer:
         else:
             for polygon in self._polygons:
                 line_count += polygon.jumpCount
-            
-        
+
         # Reserve the neccesary space for the data upfront
         builder.reserveFaceAndVertexCount(2 * line_count, 4 * line_count)
         
@@ -94,7 +91,7 @@ class Layer:
             # Line types of the points we want to draw
             line_types = polygon.types[index_mask]
             
-             # Shift the z-axis according to previous implementation. 
+            # Shift the z-axis according to previous implementation.
             if make_mesh:
                 points[polygon.isInfillOrSkinType(line_types), 1::3] -= 0.01
             else:
@@ -106,13 +103,14 @@ class Layer:
             # Scale all normals by the line width of the current line so we can easily offset.
             normals *= (polygon.lineWidths[index_mask.ravel()] / 2)
 
-            # Create 4 points to draw each line segment, points +- normals results in 2 points each. Reshape to one point per line
+            # Create 4 points to draw each line segment, points +- normals results in 2 points each.
+            # After this we reshape to one point per line.
             f_points = numpy.concatenate((points-normals, points+normals), 1).reshape((-1, 3))
-            # __index_pattern defines which points to use to draw the two faces for each lines egment, the following linesegment is offset by 4 
+
+            # __index_pattern defines which points to use to draw the two faces for each lines egment, the following linesegment is offset by 4
             f_indices = ( self.__index_pattern + numpy.arange(0, 4 * len(normals), 4, dtype=numpy.int32).reshape((-1, 1)) ).reshape((-1, 3))
             f_colors = numpy.repeat(polygon.mapLineTypeToColor(line_types), 4, 0)
 
             builder.addFacesWithColor(f_points, f_indices, f_colors)
-
         
         return builder.build()

cura/LayerData.py

@@ -2,11 +2,12 @@
 # Cura is released under the terms of the AGPLv3 or higher.
 from UM.Mesh.MeshData import MeshData
 
+
 ##  Class to holds the layer mesh and information about the layers.
 # Immutable, use LayerDataBuilder to create one of these.
 class LayerData(MeshData):
     def __init__(self, vertices = None, normals = None, indices = None, colors = None, uvs = None, file_name = None,
-        center_position = None, layers=None, element_counts=None, attributes=None):
+                 center_position = None, layers=None, element_counts=None, attributes=None):
         super().__init__(vertices=vertices, normals=normals, indices=indices, colors=colors, uvs=uvs,
                          file_name=file_name, center_position=center_position, attributes=attributes)
         self._layers = layers

cura/LayerDataBuilder.py

@@ -8,6 +8,7 @@ from .LayerData import LayerData
 
 import numpy
 
+
 ## Builder class for constructing a LayerData object
 class LayerDataBuilder(MeshBuilder):
     def __init__(self):