Download e-book for kindle: A PostScript Cookbook by Barry Thomas (auth.)

By Barry Thomas (auth.)

ISBN-10: 0333484789

ISBN-13: 9780333484784

ISBN-10: 1349106429

ISBN-13: 9781349106424

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Example text

Variables are also assigned for the ASCII value of the current character, its string representation, an approximation to Pi and the circumference of the circle. The oshow procedure prints text in outline only, this is seen in the first program in this chapter, under the heading Simple Text. Note, however, that small point sizes may appear rather messy using this method. To use solid characters, remove the oshow procedure and replace the single occurrence of oshow in the main program with the show operator.

Val as string xpos vpos moveto % to bottom left of cur. item width 0 rlineto % draw box ... 0 value factor mul rlineto width neg 0 rlineto closepath gsave % save outline % set gray shade currgray setgray fill grestore % fill bar & restore key-line stroke /currgray % increment gray level for % next bar currgray grayinc add def /vpos vpos value factor mul add % update vertical position def } def 44 /Times-Bold findfont 24 scalefont set font A POSTSCRIPT COOKBOOK % set font for title title dup stringwidth pop% get width of title 2 div 300 exch sub 90 moveto % pos'n for start of title show % show title /Times-Bold findfont 16 scalefont setfont % font for labels number 2 mul 1 add copy number % duplicate contents % ready to add them up pop total add /total exch def } repeat % get total of values 640 total div /factor exch def pop number {item} repeat pop stroke l def % get multip.

It checks that the new y position is not within 50 points of the page end. If it is, the current page is printed, the y position reset to the top of the page and the program continues. If not, the line variables are reset and the word added to the now blank line. Times is selected at the given point size. A space is measured for width - this is used when checking to see if a word will overstep the line length. The main routine then takes each character in the given text string, adding it first to the word, then, at each occurrence of a space, checking line lengths.

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A PostScript Cookbook by Barry Thomas (auth.)

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