Footprint generators in Python: add a rounding method to put a coordinate on a grid (PutOnGridMM and PutOnGridMils) .

pcbnew/scripting/plugins/HelpfulFootprintWizardPlugin.py

@@ -279,6 +279,24 @@ class HelpfulFootprintWizardPlugin(pcbnew.FootprintWizardPlugin,
         """
         pass
 
+    def PutOnGridMM(self, value, gridSizeMM=0.05):
+        """
+        Round the value (in KiCAD internal units 1nm) according to the 
+        provided gridSize in mm.
+        """
+        thresh = pcbnew.FromMM(gridSizeMM)
+        res = round(value/thresh)*thresh
+        return res
+
+    def PutOnGridMils(self, value, gridSizeMil=2):
+        """
+        Round the value (in KiCAD internal units 1nm) according to the 
+        provided gridSize in mil.
+        """
+        thresh = pcbnew.FromMils(gridSizeMil)
+        res = round(value/thresh)*thresh
+        return res
+
     def BuildThisFootprint(self):
         """
         Draw the footprint.

pcbnew/scripting/plugins/bga_wizard.py

@@ -86,6 +86,9 @@ class BGAWizard(HFPW.HelpfulFootprintWizardPlugin):
         self.draw.SetLayer(pcbnew.F_CrtYd)
         sizex = (ssx + cmargin) * 2
         sizey = (ssy + cmargin) * 2
+        # round size to nearest 0.1mm, rectangle will thus land on a 0.05mm grid
+        sizex = self.PutOnGridMM(sizex, 0.1)
+        sizey = self.PutOnGridMM(sizey, 0.1)
         # set courtyard line thickness to the one defined in KLC
         self.draw.SetLineThickness(pcbnew.FromMM(0.05))
         self.draw.Box(0, 0, sizex, sizey)

pcbnew/scripting/plugins/qfp_wizard.py

@@ -113,6 +113,9 @@ class QFPWizard(HelpfulFootprintWizardPlugin.HelpfulFootprintWizardPlugin):
         self.draw.SetLayer(pcbnew.F_CrtYd)
         sizex = (lim_x + cmargin) * 2 + pad_length
         sizey = (lim_y + cmargin) * 2 + pad_length
+        # round size to nearest 0.1mm, rectangle will thus land on a 0.05mm grid
+        sizex = self.PutOnGridMM(sizex, 0.1)
+        sizey = self.PutOnGridMM(sizey, 0.1)
         # set courtyard line thickness to the one defined in KLC
         thick = self.draw.GetLineThickness()
         self.draw.SetLineThickness(pcbnew.FromMM(0.05))

pcbnew/scripting/plugins/sdip_wizard.py

@@ -109,6 +109,9 @@ class RowedFootprint(HFPW.HelpfulFootprintWizardPlugin):
         self.draw.SetLayer(pcbnew.F_CrtYd)
         sizex = (ssx + cmargin) * 2
         sizey = (ssy + cmargin) * 2
+        # round size to nearest 0.1mm, rectangle will thus land on a 0.05mm grid
+        sizex = self.PutOnGridMM(sizex, 0.1)
+        sizey = self.PutOnGridMM(sizey, 0.1)
         # set courtyard line thickness to the one defined in KLC
         self.draw.SetLineThickness(pcbnew.FromMM(0.05))
         self.draw.Box(0, 0, sizex, sizey)

pcbnew/scripting/plugins/zip_wizard.py

@@ -102,10 +102,13 @@ class RowedFootprint(HFPW.HelpfulFootprintWizardPlugin):
         cmarginx = body[self.courtyard_x_margin_key]
         cmarginy = body[self.courtyard_y_margin_key]
         self.draw.SetLayer(pcbnew.F_CrtYd)
-        # set courtyard line thickness to the one defined in KLC
         thick = self.draw.GetLineThickness()
         sizex = (pin1posX + cmarginx) * 2 + pad_Hsize + thick
         sizey = (pin1posY + cmarginy) * 2 + pad_Vsize + thick
+        # round size to nearest 0.1mm, rectangle will thus land on a 0.05mm grid
+        sizex = self.PutOnGridMM(sizex, 0.1)
+        sizey = self.PutOnGridMM(sizey, 0.1)
+        # set courtyard line thickness to the one defined in KLC
         self.draw.SetLineThickness(pcbnew.FromMM(0.05))
         self.draw.Box(0, 0, sizex, sizey)
         # restore line thickness to previous value