Added skip_top and skip_bottom options to the rot_footprint filter.

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Added
+- Options to better control the rotation filter (#60 and #67):
+  - invert_bottom: bottom angles are inverted.
+  - skip_top: top components aren't rotated.
+  - skip_bottom: bottom components aren't rotated.
 
 ## [0.11.0] - 2021-04-25
 ### Added

README.md

@@ -348,6 +348,8 @@ Currently the only type available is `generic`.
     - `negative_bottom`: [boolean=true] Rotation for bottom components is computed via subtraction as `(component rot - angle)`.
     - `rotations`: [list(list(string))] A list of pairs regular expression/rotation.
                    Components matching the regular expression will be rotated the indicated angle.
+    - `skip_bottom`: [boolean=false] Do not rotate components on the bottom.
+    - `skip_top`: [boolean=false] Do not rotate components on the top.
 - subparts: Subparts
         This filter implements the KiCost subparts mechanism.
   * Valid keys:

kibot/fil_rot_footprint.py

@@ -68,6 +68,10 @@ class Rot_Footprint(BaseFilter):  # noqa: F821
             self.rotations = Optionable
             """ [list(list(string))] A list of pairs regular expression/rotation.
                 Components matching the regular expression will be rotated the indicated angle """
+            self.skip_bottom = False
+            """ Do not rotate components on the bottom """
+            self.skip_top = False
+            """ Do not rotate components on the top """
 
     def config(self, parent):
         super().config(parent)
@@ -92,6 +96,9 @@ class Rot_Footprint(BaseFilter):  # noqa: F821
 
     def filter(self, comp):
         """ Apply the rotation """
+        if (self.skip_top and not comp.bottom) or (self.skip_bottom and comp.bottom):
+            # Component should be excluded
+            return
         for regex, angle in self._rot:
             if regex.search(comp.footprint):
                 old_angle = comp.footprint_rot