%!PS-Adobe-2.0 %%DocumentFonts: Times-Roman %%Creator: Axiom %%CreationDate: today %%Pages: 1 %%processing (hard) limit: 250 pts or 500 values for the operand stack. %%EndComments %------------------------------- prologue -------------------------------% %-------------------------- support procedures --------------------------% %--------- first create user dictionary with 100 entries max ------------% % (number can be changed to accomodate definitions) % 100 dict begin %% using 100 entries in top level dictionary /FontHeight 12 def /inch { 72 mul } def % yVal and hVal are necessary because the Xwindow display origin % is at the upper left corner, while the postscript display % origin is at the lower left hand corner. /yVal %% get Y value -- make upper left corner origin { maxY sub abs } %% maxY is viewWindow height def /hVal %% get H value -- used for displaying title text { maxH sub abs } %% maxH is viewWindow height+titleWindow height def % loads in the font /loadFont { /Times-Roman findfont FontHeight scalefont setfont } def % draws a rectangle with input operand: % height % width % notice that this function does not "draw" or ink the rectangle. /drawRect { 1 index 1 add 0 rlineto %% draw first side 0 exch 1 add neg rlineto %% draw second side 1 add neg 0 rlineto %% draw third side closepath } %% draw fourth side def % create a rectangle with input operand in the view window: % y % x % height % width % notice that this function does not "draw" or ink the rectangle. /rectangle { yVal moveto %% set currentpoint for line drawRect } %% draws the rectangle def % These are global variables that every draw procedure uses % THe operand should be as follows: % viewWindow width % viewWindow height % title height /setDim { /maxX exch def %% width of display /maxY exch def %% height of display /titleH exch def %% height of title /maxH maxY titleH add def %% height of display + title } def %-------------------------- major procedures --------------------------% /title %% draws a rectangle around the title of picture { gsave newpath moveto %% lower left of title titleH 1 add 0 exch rlineto %% draw first side 1 add 0 rlineto %% draw second side 1 add neg 0 exch rlineto begin installGC stroke end %% draw third side grestore } def /drawFrame %% draw display frame { gsave newpath maxX maxY 0 0 rectangle begin installGC stroke end grestore } def % updates the foreground color of existing graphics-context dictionary: % foreground color % dictionary name /setForeground { /FGcolor exch put } def % updates the background color of existing graphics-context dictionary: % background color % dictionary name /setBackground { /BGcolor exch put } def % updates the line width, line style, cap style, join style of % existing graphics-context dictionary: % dictionary name % join style % cap style % line width /setLineAttributes { begin /JoinStyle exch def /CapStyle exch def /LineWidth exch def end } def % creates a graphics context dictionary with the following information: % /dictionary name % foreground color % background color % line width % cap style % join style % this creates different graphical contexts for different drawing functions. /makeDict { 5 dict 2 copy def begin pop %% with dict name on top of stack /FGcolor exch def %% define drawing attributes /BGcolor exch def %% not heavily used /LineWidth exch def /CapStyle exch def /JoinStyle exch def end } def % makes the current dictionary attributes effective % this function takes the values in the current dictionary to set the context % these are the values currently being used: foreground, cap, join, and width /installGC { FGcolor currentgray ne {FGcolor setgray} if %% foreground color CapStyle currentlinecap ne {CapStyle setlinecap} if %% cap style JoinStyle currentlinejoin ne {JoinStyle setlinejoin} if %% join style LineWidth currentlinewidth ne {LineWidth setlinewidth} if } %% line width def % operand stack configuration in order to use psDrawFilled: % psFillPoly % XPoint[0].y % XPoint[0].x % n % ... % XPoint[n].y % XPoint[n].x % graphics-context dictionary % this draws a polygon by connecting all the points and fills the % region with foreground color /psFillPoly { gsave newpath yVal moveto 1 sub { yVal lineto } repeat closepath begin installGC fill end %% fills with foreground color grestore } def % operand stack configuration in order to use psDrawLine: % psDrawLine % y0 % x0 % y1 % x1 % graphics-context dictionary % this draws a line from (x0, y0) to (x1, y1). /psDrawLine { gsave newpath yVal moveto yVal lineto begin installGC stroke end grestore } def % operand stack configuration in order to use psDrawLines: % psDrawLines % points[0].y % points[0].x % n % ... % points[n].y % points[n].x % graphics-context dictionary % this draws lines connecting all the points. /psDrawLines { gsave newpath yVal moveto 1 sub { yVal lineto } repeat begin installGC stroke end grestore } def % operand stack configuration in order to use psDrawStr: % psDrawStr % y % x % string % graphics-context dictionary % this function draws a text string at (x,y). /psDrawStr { gsave newpath loadFont yVal moveto exch begin installGC show end grestore } def %-------------------------- script --------------------------% % 1 inch 1 inch translate mark %% mark bottom of our stack 0 0 1 1072693248 0 /globalGC1 makeDict 0 0 1 1072693248 0 /globalGC2 makeDict 0 0 1 1072693248 0 /trashGC makeDict 0 0 1 1072693248 0 /componentGC makeDict 0 0 1 1072693248 0 /opaqueGC makeDict 0 0 1 1072693248 0 /renderGC makeDict 0 0 1 1072693248 0 /globGC makeDict 0 0 1 1072693248 0 /anotherGC makeDict 1 0 1 1072693248 0 /renderGC makeDict gsave % save graphics state for clipping path 1.000000 1.000000 scale 24 303 300 setDim maxX maxY 0 0 rectangle clip % set clip path globalGC1 0.000000 setForeground globGC 0.000000 setForeground globalGC1 69 199 213 97 psDrawLine globGC (X) 64 204 psDrawStr globalGC1 107.000000 setForeground globGC 107.000000 setForeground globalGC1 0.000000 setForeground globGC 0.000000 setForeground globalGC1 230 199 86 97 psDrawLine globGC (Y) 235 204 psDrawStr globalGC1 107.000000 setForeground globGC 107.000000 setForeground globalGC1 0.000000 setForeground globGC 0.000000 setForeground globalGC1 149 57 149 203 psDrawLine globGC (Z) 154 52 psDrawStr globalGC1 107.000000 setForeground globGC 107.000000 setForeground 0 0 1 renderGC setLineAttributes renderGC 0.000000 setForeground renderGC 0.750000 setForeground renderGC 149 123 43 195 256 195 4 149 123 psFillPoly renderGC 0.000000 setForeground renderGC 149 123 43 195 256 195 4 149 123 psDrawLines renderGC 0.437500 setForeground renderGC 149 123 8 71 43 195 4 149 123 psFillPoly renderGC 0.000000 setForeground renderGC 149 123 8 71 43 195 4 149 123 psDrawLines renderGC 0.500000 setForeground renderGC 149 4 8 71 149 123 4 149 4 psFillPoly renderGC 0.000000 setForeground renderGC 149 4 8 71 149 123 4 149 4 psDrawLines renderGC 0.687500 setForeground renderGC 256 195 149 4 149 123 4 256 195 psFillPoly renderGC 0.000000 setForeground renderGC 256 195 149 4 149 123 4 256 195 psDrawLines renderGC 0.687500 setForeground renderGC 256 195 43 195 149 298 4 256 195 psFillPoly renderGC 0.000000 setForeground renderGC 256 195 43 195 149 298 4 256 195 psDrawLines renderGC 0.750000 setForeground renderGC 291 71 149 4 256 195 4 291 71 psFillPoly renderGC 0.000000 setForeground renderGC 291 71 149 4 256 195 4 291 71 psDrawLines renderGC 0.625000 setForeground renderGC 149 298 291 71 256 195 4 149 298 psFillPoly renderGC 0.000000 setForeground renderGC 149 298 291 71 256 195 4 149 298 psDrawLines renderGC 0.812500 setForeground renderGC 43 195 149 180 149 298 4 43 195 psFillPoly renderGC 0.000000 setForeground renderGC 43 195 149 180 149 298 4 43 195 psDrawLines renderGC 0.625000 setForeground renderGC 8 71 149 180 43 195 4 8 71 psFillPoly renderGC 0.000000 setForeground renderGC 8 71 149 180 43 195 4 8 71 psDrawLines renderGC 0.500000 setForeground renderGC 149 4 149 180 8 71 4 149 4 psFillPoly renderGC 0.000000 setForeground renderGC 149 4 149 180 8 71 4 149 4 psDrawLines renderGC 0.687500 setForeground renderGC 291 71 149 180 149 4 4 291 71 psFillPoly renderGC 0.000000 setForeground renderGC 291 71 149 180 149 4 4 291 71 psDrawLines renderGC 0.687500 setForeground renderGC 149 180 291 71 149 298 4 149 180 psFillPoly renderGC 0.000000 setForeground renderGC 149 180 291 71 149 298 4 149 180 psDrawLines grestore % restore graphics state cleartomark %% clearing operand stack end %% pops mainDict from dictionary stack showpage %-------------------------- end --------------------------%