postscript

Okay, I now "know" postscript, everything makes a lot more sense now. I've found that if I change the colour though it affects backgrounds in other areas, I now know that sc, SC, cs and CS are procedures: /cs { /pdfFillXform exch def dup /pdfFillCS exch def setcolorspace } def /CS { /pdfStrokeXform exch def dup /pdfStrokeCS exch def setcolorspace } def /sc { pdfLastFill not { pdfFillCS setcolorspace } if dup /pdfFill exch def aload pop pdfFillXform setcolor /pdfLastFill true def /pdfLastStroke false def } def /SC { pdfLastStroke not { pdfStrokeCS setcolorspace } if dup /pdfStroke exch def

I have a loop that takes out each word in a string using token, then I want to be able to do computations on it like this: (1 2 add 3 4 add) But any way you code it i keep getting 7 add 2 1 I want it to be 7 3 This is what I am working with { %loop pstack (repl> )print flush (%lineedit)(r)file dup bytesavailable string readstring pop { token {}{exit}ifelse exch dup () eq {pop exec exit}if exec }loop }loop I would advise you to write stack comments at the end of each line. It really helps. { %loop pstack (repl> )print flush (%lineedit)(r)file % f dup bytesavailable string readstring pop % s {

I want to use GS to generate thumbnails from pdf files. The thumbnail must fit a 90x120 pixel rectangle The image should not be rotated The image should be resized to fit the rectangle with keeping aspect ratio I use the following command: gswin32 -dPDFFitPage -dPARANOIDSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=0 -dDEVICEWIDTH=90 -dDEVICEHEIGHT=120 -dORIENT1=true -sDEVICE=jpeg -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sOutputFile=output.%d.jpg input.pdf Result: If I use some PDF with portrait pages like this example , which you can download, then the