Fix a missing init in gerber plot script demo.

Fixes: lp:1759071
https://bugs.launchpad.net/kicad/+bug/1759071

demos/python_scripts_examples/gen_gerber_and_drill_files_board.py

@@ -37,7 +37,7 @@ popt.SetOutputDirectory(plotDir)
 
 # Set some important plot options:
 popt.SetPlotFrameRef(False)     #do not change it
-popt.SetLineWidth(FromMM(0.35))
+popt.SetLineWidth(FromMM(0.15)) # default line width to plot items having no line thickiness defined
 
 popt.SetAutoScale(False)        #do not change it
 popt.SetScale(1)                #do not change it
@@ -48,8 +48,14 @@ popt.SetExcludeEdgeLayer(False);
 popt.SetScale(1)
 popt.SetUseAuxOrigin(True)
 
-# This by gerbers only (also the name is truly horrid!)
+# This by gerbers only
 popt.SetSubtractMaskFromSilk(False)
+# Disable plot pad holes
+popt.SetDrillMarksType( PCB_PLOT_PARAMS.NO_DRILL_SHAPE );
+# Skip plot pad NPTH when possible: when drill size and shape == pad size and shape
+# usually sel to True for copper layers
+popt.SetSkipPlotNPTH_Pads( False );
+
 
 # Once the defaults are set it become pretty easy...
 # I have a Turing-complete programming language here: I'll use it...
@@ -70,6 +76,11 @@ plot_plan = [
 
 
 for layer_info in plot_plan:
+    if layer_info[1] <= B_Cu:
+        popt.SetSkipPlotNPTH_Pads( True )
+    else:
+        popt.SetSkipPlotNPTH_Pads( False )
+
     pctl.SetLayer(layer_info[1])
     pctl.OpenPlotfile(layer_info[0], PLOT_FORMAT_GERBER, layer_info[2])
     print 'plot %s' % pctl.GetPlotFileName()
@@ -80,6 +91,7 @@ for layer_info in plot_plan:
 lyrcnt = board.GetCopperLayerCount();
 
 for innerlyr in range ( 1, lyrcnt-1 ):
+    popt.SetSkipPlotNPTH_Pads( True );
     pctl.SetLayer(innerlyr)
     lyrname = 'inner%s' % innerlyr
     pctl.OpenPlotfile(lyrname, PLOT_FORMAT_GERBER, "inner")

pcbnew/plot_board_layers.cpp

@@ -434,7 +434,6 @@ void PlotStandardLayer( BOARD *aBoard, PLOTTER* aPlotter,
                     ( pad->GetSize() == pad->GetDrillSize() ) &&
                     ( pad->GetAttribute() == PAD_ATTRIB_HOLE_NOT_PLATED ) )
                     break;
-
                 // Fall through:
             case PAD_SHAPE_TRAPEZOID:
             case PAD_SHAPE_RECT: