> Did this for the Homebrew_PCBs Yahoo! group, though some >folks here might be > interested...
> http://www.delorie.com/pcb/spirals/ That will be useful for the Atmel TouchLib sensors if they ever get around to releasing a GCC version. Spiral this, very old, PostScript file, you'll find it interesting: %! %% SPIRAL DEFS /inch { 72 mul } def /wood-rad 210 def % radius of wooden disk /text-rad wood-rad .92 mul def % radius of outer spiral text /ben-rad text-rad .46 mul def % radius of Benham's ring %/downscale 1 def % reduction in scale after each letter /downscale .99700 def % reduction in scale after each letter /angle -2.400 def % rotation after each letter /text (Yes I had this problem earlier this year and A. Kinsman \ <kins...@crestone> of Eastman Kodak kindly posted this code \ which produced exactly the effect I wanted and I was very \ pleased indeed to get hold of it - but don't ask me how or why it \ works ...I'm just happy to use it... ) def gsave 298 390 translate % place the spiral text 0.0 setgray /Times-Roman findfont 48 scalefont setfont 0 1 text length 1 sub { text exch get ( ) dup 0 4 -1 roll put % ( char-string -- ) %V1 dup stringwidth pop 2 div neg text-rad moveto % ( char-string -- ) %V2 -.08 inch text-rad moveto % ( char-string -- ) gsave 0 text-rad moveto % ( char-string -- ) -2.2 rotate % 1 setlinecap % DEBUG % 0 0 rlineto stroke % DEBUG % dup stringwidth pop 2 div neg text-rad moveto % DEBUG dup show % ( char-string -- ) grestore downscale dup scale stringwidth pop text-rad atan neg rotate } for grestore showpage (spiral.ps done) print %-- %gerry pratt - workstation support programmer - university of keele - ENGLAND %email: ge...@seq1.keele.ac.uk ( DYNIX? - just say no!! ) tel:UK 0782 583072 %"these opinions are mine, mine, Mine, Mine, MINE......ALL MINE I TELL YOU!!" % > Yay for text-based file formats :-) Maybe we should write a PCB version in PostScript. :-) -- http://www.wearablesmartsensors.com/ http://www.softwaresafety.net/ http://www.designer-iii.com/ http://www.unusualresearch.com/ _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user