yost@esquire.UUCP (David A. Yost) (03/02/90)
Could someone please post a PostScript routine that will print an m x n one-bit-deep image at device resolution? Thanks. --dave yost yost@dpw.com or uunet!esquire!yost Please ignore the From or Reply-To fields above, if different.
zben@umd5.umd.edu (Ben Cranston) (03/03/90)
In article <1822@esquire.UUCP> yost@esquire.UUCP (David A. Yost) writes: > Could someone please post a PostScript routine > that will print an m x n one-bit-deep image at > device resolution? Unless you like inverting matrices in Postscript, looks like the best bet is to m n idtransform scale then to image the picture as usual. This version of the Turkey example from page 171 of the Red book or page 149 of the Blue book prints a nice tenth- inch turkey, which is about right (24/300 ~= 1/10...). %! /inch { 72 mul } def /picstr 3 string def /imageturkey { 24 23 idtransform scale 24 23 1 [24 0 0 -23 0 23] {currentfile picstr readhexstring pop} image } def gsave 3 inch 4 inch translate imageturkey FFC4FF FFD8FF FFDB7F F1B6BF EEB6DF EB4DDF C349AF 8A0177 E80073 E8A0EB E3F81D C7FC3B 8FCE7D 071203 4D443D 44907B CE403D E715C3 F1C1FF F803FF FC07FF E1E7FF E007FF grestore showpage -- Sig DS.L ('ZBen') ; Ben Cranston <zben@Trantor.UMD.EDU> * Network Infrastructures Group, Computer Science Center * University of Maryland at College Park * of Ulm
zben@umd5.umd.edu (Ben Cranston) (03/03/90)
Didn't really look at those tiny turkeys until after posting. Some devices
invert the X or Y scales between user and device coordinates. Looks like
better bet is:
m n idtransform abs exch abs exch scale
which forces the distance vector components to be positive.
%!
/inch { 72 mul } def
/picstr 3 string def
/imageturkey {
24 23 idtransform abs exch abs exch scale
24 23 1
[24 0 0 -23 0 23]
{currentfile picstr readhexstring pop}
image
} def
gsave
3 inch 4 inch translate
imageturkey
FFC4FF FFD8FF FFDB7F F1B6BF
EEB6DF EB4DDF C349AF 8A0177
E80073 E8A0EB E3F81D C7FC3B
8FCE7D 071203 4D443D 44907B
CE403D E715C3 F1C1FF F803FF
FC07FF E1E7FF E007FF
grestore
showpage
--
Sig DS.L ('ZBen') ; Ben Cranston <zben@Trantor.UMD.EDU>
* Network Infrastructures Group, Computer Science Center
* University of Maryland at College Park
* of Ulm