By Barry Thomas (auth.)
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PostScript, a innovative, device-independent web page description language, is readily turning into the common for printing top quality built-in textual content and portraits. it's a robust, versatile language that has the power to explain successfully the looks of textual content, photographs, and photograph fabric at the revealed web page.
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Additional resources for A PostScript Cookbook
1/2 angle for char str oshow % so char sits tangentially % then show it and restore grestore 28 charot neg rotate } forall } def A POSTSCRIPT COOKBOOK % rot. value for current char % go clockwise % proc end -St. Bernard's High School- Westcliff-on-Sea) % radius 200 % point size 63 circlet ext showpage The program starts by assigning variables for the point size, circle radius and 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 three numbers represent the start, increment and end of a series of numbers which are given in turn to the following procedure. The procedure sets the gray level for each box, draws the box and shrinks the overall scale of the image down by a small amount Successive boxes then lie inside and overlap slightly the previous ones. The last, inner box is black. The program ends by restoring the graphics state. 05 1 % gray settings for fade in For a broader faded area, change the middle of these three numbers to a smaller number; halving the middle number doubles the width of the frame.
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. The word is either added to the line or placed on a new line after the old line is padded and printed. At the end of the loop, the remaining part line is printed, followed by a blank line and the credit 26 A POSTSCRIPT COOKBOOK CIRCULAR TEXT This program demonstrates the positioning of text in other than the usual portrait or landscape orientations by using the rotate operator to rotate the coordinate system of user space.
A PostScript Cookbook by Barry Thomas (auth.)