Initial population.

1 files changed, 260 insertions, 0 deletions

diff --git a/src/doc/ps/arrow.ps b/src/doc/ps/arrow.ps
new file mode 100644
index 00000000..0deb5db3
--- /dev/null
+++ b/src/doc/ps/arrow.ps
@@ -0,0 +1,260 @@
+%!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 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 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	276	300	setDim
+	maxX maxY	0 0	rectangle	clip	% set clip path
+
+	globalGC1	0.000000	setForeground
+	globGC	0.000000	setForeground
+	globalGC1	47	213	234	84	psDrawLine
+	globGC	(X)	42	218	psDrawStr
+	globalGC1	106.000000	setForeground
+	globGC	106.000000	setForeground
+	globalGC1	0.000000	setForeground
+	globGC	0.000000	setForeground
+	globalGC1	252	213	65	84	psDrawLine
+	globGC	(Y)	257	218	psDrawStr
+	globalGC1	106.000000	setForeground
+	globGC	106.000000	setForeground
+	globalGC1	0.000000	setForeground
+	globGC	0.000000	setForeground
+	globalGC1	150	32	150	225	psDrawLine
+	globGC	(Z)	155	27	psDrawStr
+	globalGC1	106.000000	setForeground
+	globGC	106.000000	setForeground
+	1	0	0	componentGC	setLineAttributes
+	componentGC	0.000000	setForeground
+	componentGC	0.000000	setForeground
+	componentGC	150	182	150	142	psDrawLine
+	componentGC	0.000000	setForeground
+	componentGC	155	171	150	182	psDrawLine
+	componentGC	0.000000	setForeground
+	componentGC	144	171	150	182	psDrawLine
+
+    grestore	% restore graphics state
+
+
+   cleartomark					%% clearing operand stack
+
+end		%% pops mainDict from dictionary stack
+
+showpage
+
+%-------------------------- end --------------------------%