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Date:	Thu, 6 Jun 2013 00:11:02 +0200
From:	Kai-Martin Knaak <kmk AT familieknaak DOT de>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] far side rendering
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Nathan Stewart <therealnathanstewart AT gmail DOT com> schrieb am 26. May 2013:

> Is there any control over rendering options of the far side of the
> board? I didn't see it in the color/layers options.

I use action scripts to achieve the prints I find most useful for my
work flow. That is four pages:
  1) top silk with refdes in black and top layer in light grey
  2) top silk with values in black and top layer in light grey
  3) bottom silk with refdes in black and bottom layer in light grey
  4) bottom silk with values in black and bottom layer in light grey

Unfortunately, default pcb exits on the action 'DISPLAY(...)' which
switches between "refdes" and "value". There is a code path that
considers this action to be only sensible if a GUI is present. In case
of no GUI, the code exits right away. This is meant to prevent non
sensible actions go unnoticed when nobody is watching.

The ability to produce the above prints in a scripted environment
is important to my work flow. So I wrote a patch that replaces the exit
command with a warning on stdout.

---<)kaimartin(>---

PS: This is the current version of my print script. It optionally
adds a mirrored copy of top silk to the bottom prints. For eye candy,
it produces a photo realistic PNG with fake drop shadows:

/-------------------------
#!/bin/bash
# layout-print for PCB -<(kmk)>- 2010-2012
# needs poster, ps2pdf, convert, psmerge and optionally
# viewers for PNG and PDF (gthumb and okular)
########################################################

if [ $# -eq 0 ]    # Script invoked with no command line args
then
  echo "A script to provide PDF and PNG prints of a PCB layout. The PDF out=
put"
  echo "contains pages with the refdes of components and additionaly pages =
that"
  echo "show the values of components. Optionally, an additional bottom vie=
w"
  echo "is produced that shows mirrored top silk. This is useful for debugg=
ing"=20
  echo "thru hole designs."
  echo "Photorealistic PNG output is rendered with a drop shadow for a slig=
htly"=20
  echo "three dimensional impression."
  echo ""
  echo "Usage: `basename $0` [-s][-p][-V] foobar.pcb"
  echo "-s     add a page with mirrored top silk on bottom layer"
  echo "-p     produce photo realistic output"
  echo "-V     launch viewers on produced output"
  echo "Note: There is a bug in the run of the mill version of PCB, that pr=
events"
  echo "execution of the DISPLAY action on the command line. The applicatio=
n"
  echo "exits preemptively on the assumption, that this command is only val=
id"
  echo "if PCB runs in GUI mode. Because of this, this print script won't w=
ork"
  echo "properly unless a patch has been applied to the source."
  echo "A patch to make PCB issue a rather than exit right away, can be"
  echo "downloaded as 'hidnogui-actionscript.patch' from http://gedasymbols=
.org ."
  exit
fi =20
BOTTOMTHRU=3D0
PHOTOOUTPUT=3D0
STARTVIEWER=3D0
while getopts ":spV" Option
do
  case $Option in
    s     ) echo "add a page with mirrored top silk on bottom layer"; BOTTO=
MTHRU=3D1 ;;
    p     ) echo "produce photorealistic image "; PHOTOOUTPUT=3D1 ;;
    V     ) echo "automatically start viewers "; STARTVIEWER=3D1 ;;
    *     ) echo "unknown option: \""$Option"\"" ; exit;   # Default.
  esac
done
shift $(($OPTIND - 1))   # go to next argument

#######################################################


PCBFILE=3D$1
NAME=3D`basename $PCBFILE .pcb`
OUTPDF=3D$NAME"_layout_"`date +%F`".pdf"
OUTPNG=3D$NAME"_layout_"`date +%F`".png"
OUTPNG_BOTTOM=3D$NAME"_layout_bottom_"`date +%F`".png"
PCB=3D/usr/local/bin/pcb
PDFVIEWER=3D/usr/bin/okular
PNGVIEWER=3D/usr/bin/gthumb
SIZE=3D"20x30cm"
PAPERSIZE=3D"A4"
TMPDIR=3D/tmp/layoutdruck

## echo pcb version
$PCB -V

mkdir $TMPDIR

## top-refdes
echo "Best=C3=BCckungsdruck Nummern, Oberseite von "$OUTPUT

$PCB -x eps \
  --action-string 'DISPLAY(NameOnPCB)' \
  --element-color '#000000' \
  --pin-color '#cccccc' \
  --layer-color-1 '#cccccc' \
  --layer-color-2 '#dddddd' \
  --layer-color-3 '#eeeeee' \
  --layer-color-4 '#cccccc' \
  --layer-color-5 '#dddddd' \
  --layer-color-6 '#eeeeee' \
  --layer-color-7 '#555555' \
  --layer-color-8 '#666666' \
 --as-shown  \
  --only-visible \
  --layer-stack "outline,comment,elements,top" \
  --eps-file $TMPDIR/toprefdes.eps \
  $PCBFILE

poster -m$PAPERSIZE -p$SIZE -c12x12mm -o $TMPDIR/toprefdes.ps $TMPDIR/topre=
fdes.eps

## top-values
echo "Best=C3=BCckungsdruck Werte, Oberseite von "$OUTPUT

$PCB -x eps \
  --action-string 'DISPLAY(Value)' \
  --element-color '#000000' \
  --pin-color '#cccccc' \
  --layer-color-1 '#cccccc' \
  --layer-color-2 '#dddddd' \
  --layer-color-3 '#eeeeee' \
  --layer-color-4 '#cccccc' \
  --layer-color-5 '#dddddd' \
  --layer-color-6 '#eeeeee' \
  --layer-color-7 '#555555' \
  --layer-color-8 '#666666' \
  --as-shown  \
  --only-visible \
  --layer-stack "outline,comment,elements,top" \
  --eps-file $TMPDIR"/topvalue.eps" \
  $PCBFILE

poster -m$PAPERSIZE -p$SIZE -c12x12mm -o $TMPDIR/topvalue.ps $TMPDIR/topval=
ue.eps


## bottom-refdes
echo "Best=C3=BCckungsdruck Unterseite, Nummern von "$OUTPUT

$PCB -x eps \
  --action-string 'DISPLAY(NameOnPCB)' \
  --element-color '#000000' \
  --pin-color '#cccccc' \
  --layer-color-1 '#cccccc' \
  --layer-color-2 '#dddddd' \
  --layer-color-3 '#eeeeee' \
  --layer-color-4 '#cccccc' \
  --layer-color-5 '#dddddd' \
  --layer-color-6 '#eeeeee' \
  --layer-color-7 '#555555' \
  --layer-color-8 '#666666' \
  --as-shown \
  --layer-stack "outline,comment,elements,bottom,solderside" \
  --eps-file $TMPDIR"/bottomrefdes_tmp.eps" \
  $PCBFILE

## rectify broken eps syntax: make bounding box parameters integers ##
#awk -F [\ \.] '
#  {
#  if ( $1 =3D=3D "%%BoundingBox:" )
#     { print $1" "$2" "$3" "$4" "$6 }
#     else { print $0 }
#  }
#' $TMPDIR"/bottomrefdes_tmp.eps" > $TMPDIR"/bottomrefdes_tmp2.eps"

## crop eps ##
epstool --bbox --copy  $TMPDIR"/bottomrefdes_tmp.eps" $TMPDIR"/bottomrefdes=
.eps"

## make a decently sized postscript page
poster -m$PAPERSIZE -p$SIZE -c12x12mm -o $TMPDIR"/bottomrefdes.ps" $TMPDIR"=
/bottomrefdes.eps"


## bottom-value
echo "Best=C3=BCckungsdruck Unterseite, Werte von "$OUTPUT

$PCB -x eps \
  --action-string 'DISPLAY(Value)' \
  --element-color '#000000' \
  --pin-color '#cccccc' \
  --layer-color-1 '#cccccc' \
  --layer-color-2 '#dddddd' \
  --layer-color-3 '#eeeeee' \
  --layer-color-4 '#cccccc' \
  --layer-color-5 '#dddddd' \
  --layer-color-6 '#eeeeee' \
  --layer-color-7 '#555555' \
  --layer-color-8 '#666666' \
  --as-shown  \
  --layer-stack "outline,comment,elements,bottom,solderside" \
  --eps-file $TMPDIR"/bottomvalue_tmp.eps" \
  $PCBFILE


## rectify broken eps syntax: make bounding box parameters integers ##
#awk -F [\ \.] '
#  {
#  if ( $1 =3D=3D "%%BoundingBox:" )
#     { print $1" "$2" "$3" "$4" "$6 }
#     else { print $0 }
#  }
#' $TMPDIR"/bottomvalue_tmp.eps" > $TMPDIR"/bottomvalue_tmp2.eps"

## crop eps ##
epstool --bbox --copy  $TMPDIR"/bottomvalue_tmp.eps" $TMPDIR"/bottomvalue.e=
ps"

## make a decently sized postscript page
poster -m$PAPERSIZE -p$SIZE -c12x12mm -o $TMPDIR"/bottomvalue.ps" $TMPDIR"/=
bottomvalue.eps"

$PCB -x eps \
  --action-string 'DISPLAY(NameOnPCB)' \
  --element-color '#000000' \
  --pin-color '#cccccc' \
  --layer-color-1 '#cccccc' \
  --layer-color-2 '#dddddd' \
  --layer-color-3 '#eeeeee' \
  --layer-color-4 '#cccccc' \
  --layer-color-5 '#dddddd' \
  --layer-color-6 '#eeeeee' \
  --layer-color-7 '#555555' \
  --layer-color-8 '#666666' \
  --as-shown  \
  --mirror \
  --layer-stack "elements" \
  --eps-file $TMPDIR"/elements.eps" \
  $PCBFILE


###### Optionally derive a see-thru of bottom with awk and tail=20
######(very dirty hack that depends on specific layer names and layer group=
s)
if [ $BOTTOMTHRU =3D=3D "1" ]
then=20
echo "Do bottomthru"
awk '$0 =3D=3D "% Layer bottom group 1 drill 0 mask 0" { exit } \
	{ print }' $TMPDIR/bottomrefdes.eps > $TMPDIR/bottomthru.eps
awk 'NR <=3D 22 { next } $1 =3D=3D "showpage" { exit } { print }' $TMPDIR/b=
ottomrefdes.eps >> $TMPDIR/bottomthru.eps
awk 'NR <=3D 21 { next } $1 =3D=3D "showpage" { exit } { print }' $TMPDIR/e=
lements.eps >> $TMPDIR/bottomthru.eps
tail -n 5 $TMPDIR"/elements.eps" >> $TMPDIR"/bottomthru.eps"
poster -mA4 -p$SIZE -c12x12mm -o $TMPDIR"/bottomthru.ps" $TMPDIR"/bottomthr=
u.eps"

fi
###########################################################################

if [ $BOTTOMTHRU =3D=3D "1" ]=20
then=20
  PAGES=3D" \
   $TMPDIR/toprefdes.ps \
   $TMPDIR/bottomrefdes.ps \
   $TMPDIR/topvalue.ps \
   $TMPDIR/bottomvalue.ps\
   $TMPDIR/bottomthru.ps"
else
  PAGES=3D" \
   $TMPDIR/toprefdes.ps \
   $TMPDIR/bottomrefdes.ps \
   $TMPDIR/topvalue.ps \
   $TMPDIR/bottomvalue.ps"
fi

## combine to a single PDF document
psmerge -o$TMPDIR/out.ps $PAGES
=20
ps2pdf $TMPDIR/out.ps $OUTPDF

## save the eps files for use in lyx documentation
for i in $PAGES; do=20
     cp $TMPDIR/`basename $i .ps`.eps  $PWD/$NAME"_"`basename $i .ps`.eps
 done

### optionally start viewer.###
if [ $STARTVIEWER =3D=3D "1" ]
then
  $PDFVIEWER $OUTPDF
fi


### photorealistic output ####
if [ $PHOTOOUTPUT =3D=3D "1" ]
then

echo  "Do a photo realistic view of the top side of the pcb"
pcb -x png --photo-mode \
  --dpi 600  \
  --use-alpha \
  --as-shown  \
  --only-visible \
  --outfile $TMPDIR/out.png \
  $PCBFILE

convert $TMPDIR/out.png \
  \( +clone -background black -shadow 75x20+20+20 \)  +swap \
  -background white \
  -layers merge \
  -resize 50% \
  $OUTPNG

echo "Do a photo realistic view of the bottom side of the pcb"
pcb -x png --photo-mode \
  --dpi 600  \
  --use-alpha \
  --as-shown  \
  --only-visible \
  --photo-flip-x \
  --outfile $TMPDIR/out.png \
  $PCBFILE

convert $TMPDIR/out.png \
  \( +clone -background black -shadow 75x20+20+20 \)  +swap \
  -background white \
  -layers merge \
  -resize 50% \
  $OUTPNG_BOTTOM

### optionally start viewer.###
if [ $STARTVIEWER =3D=3D "1" ]
then
  $PNGVIEWER $OUTPNG $OUTPNG_BOTTOM
fi

fi # photo realistic output

exit # end of script
\-------------------------

--=20
Kai-Martin Knaak

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