[Rotations][Fixed] JLCPCB bottom rotations with offset

The angle must be -angle and the X offset mirrored

See #591

CHANGELOG.md

@@ -19,7 +19,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Netlist generation problems with components on the PCB but not in schematic.
   (#578)
-- Filters: _none filter not always honored (i.e. exclude in BoM) (#580)
+- Filters:
+  - _none filter not always honored (i.e. exclude in BoM) (#580)
+  - Rotation for bottom JLCPCB parts with offset (#591)
 - PCB Parity: components excluded from the board reported anyways (#585)
 - BoardView:
   - X axis mirroring issues (whitequark/kicad-boardview#11)

kibot/fil_rot_footprint.py

@@ -251,6 +251,10 @@ def apply_rotation(self, comp):
         self.apply_rotation_angle(comp, 0)
 
     def apply_offset_value(self, comp, angle, pos_offset_x, pos_offset_y):
+        if comp.bottom and self.mirror_bottom:
+            logger.debugl(2, '- applying mirror to the offset')
+            pos_offset_x = -pos_offset_x
+            angle = -angle
         if angle:
             rotation = radians(angle)
             rsin = sin(rotation)
@@ -282,7 +286,7 @@ def apply_field_offset(self, comp):
                     pos_offset_x = -pos_offset_x
                     pos_offset_y = -pos_offset_y
                     logger.debugl(2, f'- changing to {pos_offset_x}, {pos_offset_y} mm to match signs')
-                self.apply_offset_value(comp, comp.offset_footprint_rot, pos_offset_x, pos_offset_y)
+                self.apply_offset_value(comp, comp.footprint_rot, pos_offset_x, pos_offset_y)
                 return True
         return False