version 20040903
The program cannot generate postscript files containing
multiple layers. For example, the user may want a
printout
containing the front silkscreen, front side, and back
side (this is particularly useful with color).
To fix this would require:
- Add single plot file option to print dialog box
- Add options to turn each layer on/off on dialog box
- add an option to dialog box to control plotting layers
front to back or back to front.
- print the layers in a sensible order (back silk,
back,
front, frontsilk).
- Fix the broken subtractive algorithms used to mask
silk screen off pins/pads and to subtract holes from
pads/vias. One should never set pixels that you
don't intend should stay set.
More correct drawing algorithms:
- For the silk screen, clip the silk screen line
segments
(including those used to draw text)
against the circle or rectangle that describes each
pin/pad clearance area.
- To draw pads with holes in them, draw donuts
instead of polygons.
72 72 scale
newpath
2.0 2.0 1.0 0.0 360.0 arc
2.0 2.0 0.5 0.0 360.0 arc
closepath eofill stroke
showpage
clipping traces so they don't overlap holes is a
little
more tricky. The eoclip operator may be usefull
there if you don't want to compute the proper trace
outlines with holes removed.
- Polygons may need to be clipped against holes
properly as well particularly where there is a trace
with the join flag set drawn over the hole. creating
a clipping path with eoclip which describes the
board
outline minus all the holes may help here.
There's already a program in the "tools" folder that allows
you to combine postscript plots into a single plot. The
postscript language is perfectly capable of erasing pixels
and is a raster engine - that's it's job. No reason to
reinvent the wheel.
It's time for you to start putting feature request in the
RFE area.