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Diffstat (limited to 'src/graph/PS/header.ps')
| -rw-r--r-- | src/graph/PS/header.ps | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/graph/PS/header.ps b/src/graph/PS/header.ps new file mode 100644 index 00000000..1c450133 --- /dev/null +++ b/src/graph/PS/header.ps @@ -0,0 +1,156 @@ +%!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 exch sub } %% 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 + |