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%!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
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