###############################################################################
# #
# Lout @Fig package for drawing figures (Version 2.0) #
# #
# Version 1.0 by Jeffrey H. Kingston, October 1991. #
# Version 2.0 by Jeffrey H. Kingston, 22 December 1992. #
# Symbol names changed by JHK 5 March 1993 to avoid clashes with EPS files. #
# @CurveBox and @ShadowBox added by JHK April 1995. #
# #
# See "Fig - a Lout package for drawing figures" for user information. #
# #
# This package is now obsolete, having been replaced by @Diag. #
# #
###############################################################################
@SysPrependGraphic { "figf.lpg" }
export in cm pt em sp vs ft dg
"<<" "**" "++" "--" @Max @Min
@Distance @XDistance @YDistance @Angle
@Prev "::" @Label @BaseOf @MarkOf @ShowLabels @Figure
@Frame @Box @CurveBox @ShadowBox @Square @Diamond @Polygon @Ellipse
@Circle @HLine @VLine @Line @HArrow @VArrow @Arrow @Arc
def @Fig
named maxlabels { 200 }
named linestyle { solid }
named linewidth { 0.5 pt }
named linecap { round }
named dashlength { 0.15 cm }
named paint { nopaint }
named margin { 0.4c }
named arrow { noarrow }
named headstyle { open }
named headwidth { 0.05 cm }
named headlength { 0.15 cm }
body @Body
@Begin
# Like @Graphic, but affects the graphics state of right parameter
def @InnerGraphic
left ps
right x
{
@BackEnd @Case {
PostScript @Yield { { ps gsave // grestore } @Graphic x }
PDF @Yield { }
}
}
def in precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "in" }
PDF @Yield { "__mul(__in, "x")" }
}
}
def cm precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "cm" }
PDF @Yield { "__mul(__cm, "x")" }
}
}
def pt precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "pt" }
PDF @Yield { "__mul(__pt, "x")" }
}
}
def em precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "em" }
PDF @Yield { "__mul(__em, "x")" }
}
}
def sp precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "sp" }
PDF @Yield { "__mul(__louts, "x")" }
}
}
def vs precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "vs" }
PDF @Yield { "__mul(__loutv, "x")" }
}
}
def ft precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "ft" }
PDF @Yield { "__mul(__loutf, "x")" }
}
}
def dg precedence 39 left x {
@BackEnd @Case {
PostScript @Yield { x "dg" }
PDF @Yield { }
}
}
def "<<"
precedence 38
left length
right angle
{
@BackEnd @Case {
PostScript @Yield {
0 0 length angle "lfigatangle"
}
PDF @Yield {
}
}
}
def "**"
precedence 37
left point
right length
{
@BackEnd @Case {
PostScript @Yield {
point length "lfigpmul"
}
PDF @Yield {
}
}
}
def "++"
precedence 36
associativity left
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigpadd"
}
PDF @Yield {
}
}
}
def "--"
precedence 36
associativity left
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
y x "lfigpsub"
}
PDF @Yield {
}
}
}
def @Max
precedence 36
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigpmax"
}
PDF @Yield {
}
}
}
def @Min
precedence 36
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigpmin"
}
PDF @Yield {
}
}
}
def @Distance
precedence 35
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigdistance"
}
PDF @Yield {
}
}
}
def @XDistance
precedence 35
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigxdistance"
}
PDF @Yield {
}
}
}
def @YDistance
precedence 35
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigydistance"
}
PDF @Yield {
}
}
}
def @Angle
precedence 35
left x
right y
{
@BackEnd @Case {
PostScript @Yield {
x y "lfigangle"
}
PDF @Yield {
}
}
}
def @Prev
{
@BackEnd @Case {
PostScript @Yield {
"lfigprevious"
}
PDF @Yield {
}
}
}
def "::"
precedence 33
left name
right x
{
@BackEnd @Case {
PostScript @Yield {
{ "currentdict end" maxlabels "dict begin begin"
// "("name") lfigpromotelabels" } @Graphic x
}
PDF @Yield {
}
}
}
def @Label
right name
{
@BackEnd @Case {
PostScript @Yield {
"/"name "lfigpointdef"
}
PDF @Yield {
}
}
}
def @MarkOf
precedence 32
left point
right x
{
@BackEnd @Case {
PostScript @Yield {
{ point "translate" } @InnerGraphic
{
/0io |0io @OneCol @OneRow x |0io /0io
}
}
PDF @Yield {
}
}
}
def @BaseOf
precedence 32
left point
right x
{
@BackEnd @Case {
PostScript @Yield {
{ point "translate" } @InnerGraphic
{
/0io |0io @OneRow @OneCol {
| @OneCol @OneRow x ^/
} |0io /0io
}
}
PDF @Yield {
}
}
}
def @ShowLabels
{
@BackEnd @Case {
PostScript @Yield {
"lfigshowlabels" @Graphic
}
PDF @Yield {
}
}
}
def @Figure
named shape { }
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named arrow { arrow }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
named paint { paint }
named margin { 0c }
right x
{
@BackEnd @Case {
PostScript @Yield {
@HContract @VContract
{
#fill the shape
paint @Case
{
nopaint @Yield {}
{ nochange darkblue blue lightblue darkgreen green lightgreen
darkred red lightred darkcyan cyan lightcyan darkmagenta
magenta lightmagenta darkyellow yellow lightyellow darkgray
gray lightgray darkgrey grey lightgrey black white }
@Yield
{ "/lfig"paint "[" shape "] gsave lfigpaintpath grestore" }
}
# stroke the path and add any arrowheads
linestyle @Case
{
{ solid dashed cdashed dotted noline } @Yield
{
linewidth "setlinewidth" "lfig"linecap "setlinecap"
dashlength "/lfig"linestyle "[" shape "] lfigdopath"
arrow @Case
{
noarrow @Yield { pop pop }
{ forward back both } @Yield
{ dashlength "/lfig"linestyle "/"lfigblack
headstyle @Case
{ { open halfopen closed } @Yield "lfig"headstyle }
headlength headwidth "lfig"arrow
}
}
}
}
}
@Graphic
{
^/margin ^|margin @OneCol @OneRow x |margin
/margin
}
}
PDF @Yield {
}
}
}
def @Frame
right x
{
@Figure
shape {xsize 0 @Label X 0 ysize @Label Y}
{ x }
}
def @Box
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
right x
{
@Figure
shape {
# 0 0 @Label SW
# xsize 0 @Label SE
# xsize ysize @Label NE
# 0 ysize @Label NW
# SE ** 0.5 @Label S
# NW ** 0.5 @Label W
# W ++ SE @Label E
# S ++ NW @Label N
# NE ** 0.5 @Label CTR
# SW SE NE NW SW
lfigbox
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
x
}
def @CurveBox
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
right x
{
@Figure
shape {
lfigcurvebox
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
{ 0c @HShift x }
}
def @ShadowBox
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
named shadow { 0.2f }
right x
{
@BackEnd @Case {
PostScript @Yield {
@VContract @HContract 0c @HShift "lfigshadow" @Graphic
{
^/shadow ^|shadow 0c @HShift
@Figure
shape {
lfigbox
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
0c @HShift x
|shadow /shadow
}
}
PDF @Yield {
@VContract @HContract 0c @HShift
# "lfigshadow" @Graphic is this:
{ "__mul(__xmark, 2) 0 m __xsize 0 l" # xmark 2 mul 0 moveto xsize 0 lineto
"__xsize __sub(__ysize, __mul(__xmark, 2)) l" # xsize ysize xmark 2 mul sub lineto
"__sub(__xsize, __xmark) __sub(ysize, __mul(__xmark, 2)) l" # xsize xmark sub ysize xmark 2 mul sub lineto
"__sub(__xsize, __xmark) __xmark l" # xsize xmark sub xmark lineto
"__mul(__xmark, 2) __xmark l h f" # xmark 2 mul xmark lineto closepath fill
} @Graphic
{
^/shadow ^|shadow 0c @HShift
@Figure
shape {
lfigbox
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
0c @HShift x
|shadow /shadow
}
}
}
}
def @Square
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
right x
{
@Figure
shape {
# {xsize ysize} ** 0.5 @Label CTR
# CTR ++ {{xsize xsize} @Max {ysize ysize}}**0.5 @Label NE
# CTR ++ { {CTR @Distance NE} << 135 } @Label NW
# CTR ++ { {CTR @Distance NE} << 225 } @Label SW
# CTR ++ { {CTR @Distance NE} << 315 } @Label SE
# SW ** 0.5 ++ SE ** 0.5 @Label S
# NW ** 0.5 ++ NE ** 0.5 @Label N
# SW ** 0.5 ++ NW ** 0.5 @Label W
# SE ** 0.5 ++ NE ** 0.5 @Label E
# SW SE NE NW SW
lfigsquare
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
x
}
def @Diamond
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
right x
{
@Figure
shape {
# {xsize 0} ** 0.5 @Label S
# {0 ysize} ** 0.5 @Label W
# S ++ W @Label CTR
# CTR ++ W @Label N
# CTR ++ S @Label E
# S E N W S
lfigdiamond
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
x
}
def @Polygon
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
named sides { 3 }
named angle { "dup 180 exch div" }
right x
{
@Figure
shape { sides angle lfigpolygon }
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
x
}
def @Ellipse
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
right x
{
@Figure
shape {
# {xsize 0} ** 0.5 @Label S
# {0 ysize} ** 0.5 @Label W
# S ++ W @Label CTR
# CTR ++ W @Label N
# CTR ++ S @Label E
# CTR ++ {xsize 0} ** 0.3536 ++ {0 ysize} ** 0.3536 @Label NE
# CTR ++ {xsize 0} ** 0.3536 -- {0 ysize} ** 0.3536 @Label SE
# CTR -- {xsize 0} ** 0.3536 ++ {0 ysize} ** 0.3536 @Label NW
# CTR -- {xsize 0} ** 0.3536 -- {0 ysize} ** 0.3536 @Label SW
# S [ CTR ] E [ CTR ] N [ CTR ] W [ CTR ] S
lfigellipse
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
x
}
def @Circle
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { margin }
right x
{
@Figure
shape {
# {xsize ysize} **0.5 @Label CTR
# CTR ++ {{xsize 0} @Max {ysize 0}}**0.5 @Label E
# CTR ++ { {CTR @Distance E} << 45 } @Label NE
# CTR ++ { {CTR @Distance E} << 90 } @Label N
# CTR ++ { {CTR @Distance E} << 135 } @Label NW
# CTR ++ { {CTR @Distance E} << 180 } @Label W
# CTR ++ { {CTR @Distance E} << 225 } @Label SW
# CTR ++ { {CTR @Distance E} << 270 } @Label S
# CTR ++ { {CTR @Distance E} << 315 } @Label SE
# S [ CTR ] E [ CTR ] N [ CTR ] W [ CTR ] S
lfigcircle
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
x
}
def @HLine
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { arrow }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
# 0 ymark @Prev @Label FROM
# xsize ymark @Prev @Label TO
lfighline
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
def @VLine
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { arrow }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
# xmark ysize @Prev @Label FROM
# xmark 0 @Prev @Label TO
lfigvline
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
def @HArrow
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { forward }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
# 0 ymark @Prev @Label FROM
# xsize ymark @Prev @Label TO
lfighline
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
def @VArrow
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { forward }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
# xmark ysize @Prev @Label FROM
# xmark 0 @Prev @Label TO
lfigvline
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
def @Line
named from { 0 ysize }
named to { xsize 0 }
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { arrow }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
from @Prev @Label FROM
to @Prev @Label TO
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
def @Arrow
named from { 0 ysize }
named to { xsize 0 }
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { forward }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
from @Prev @Label FROM
to @Prev @Label TO
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
def @Arc
named from { 0 ysize }
named to { xsize 0 }
named ctr { 0 0 }
named direction { clockwise }
named linestyle { linestyle }
named linewidth { linewidth }
named linecap { linecap }
named dashlength { dashlength }
named paint { paint }
named margin { 0c }
named arrow { noarrow }
named headstyle { headstyle }
named headwidth { headwidth }
named headlength { headlength }
right x
{
@Figure
shape {
from @Label FROM
to @Label TO
ctr @Label CTR
FROM [ CTR
direction @Case { {clockwise anticlockwise} @Yield direction }
] TO
}
linestyle { linestyle }
linewidth { linewidth }
linecap { linecap }
dashlength { dashlength }
paint { paint }
margin { margin }
arrow { arrow }
headstyle { headstyle }
headwidth { headwidth }
headlength { headlength }
x
}
@BackEnd @Case {
PostScript @Yield {
{ "grestore save gsave" maxlabels "dict begin lfigdict begin"
// "end end restore"
} @Graphic @Body
}
PDF @Yield {
}
}
@End @Fig
