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-% TeXdraw examples
-
-% $Id: txdexamp.tex,v 2.0 1995/12/18 texdraw-V2R0 $
-
-% These examples are taken from the TeXdraw manual. Note that the fonts
-% for text will be different from those in the manual -- here we use the
-% plain TeX defaults.
-
-% Peter Kabal
-% Department of Electrical Engineering
-% McGill University
-% 3480 University
-% Montreal, Quebec
-% Canada H3A 2A7
-
-% kabal@TSP.EE.McGill.CA
-
-\input texdraw
-\input txdtools
-\let\et=\etexdraw
-\def\etexdraw{\drawbb\et}
-
-\noindent
-TeXdraw examples using plain TeX.
-
-\bigskip
-\centertexdraw{
- \avec (0 0.8) \textref h:C v:B \htext (0 0.9){\sl y}
- \move (0 0) \avec (0.8 0) \textref h:L v:C \htext(0.9 0){\sl x}
- \move (0 1.0)}
-
-\bigskip
-\centertexdraw{
- \drawdim{cm} \linewd 0.02
- \move(2 2) \lvec(3 3) \lvec(2 4) \lvec(1 3) \lvec(2 2)
- \textref h:C v:C \htext(2 3){$\sum \rho_n$}
-}
-
-\bigskip
-\centertexdraw{
- \drawdim in
- \linewd 0.03 \setgray 0.6 \arrowheadtype t:F \avec(0.5 0.5)
- \linewd 0.01 \setgray 0 \arrowheadtype t:V \avec(1.0 0.5)
- \linewd 0.015 \lpatt(0.067 0.1) \lvec (1.5 0)
- \linewd 0.02 \lpatt() \arrowheadtype t:T \avec(2.0 0.5)
- \arrowheadtype t:H \avec(2.5 0.5)
- \setgray 0.4 \arrowheadtype t:W \avec(3.0 0)
- \textref h:R v:T \htext (0.35 0.50){\tt t:F}
- \textref h:R v:T \htext (1.0 0.43){\tt t:V}
- \textref h:R v:T \htext (1.82 0.50){\tt t:T}
- \textref h:R v:T \htext (2.5 0.43){\tt t:H}
- \textref h:R v:B \htext (2.8 0){\tt t:W}
-}
-
-\bigskip
-\centertexdraw{
- \def\bdot {\bsegment
- \fcir f:0 r:0.02
- \esegment}
- \def\Ttext #1{\bsegment
- \textref h:C v:B \htext (0 +0.06){#1}
- \esegment}
- \def\Btext #1{\bsegment
- \textref h:C v:T \htext (0 -0.06){#1}
- \esegment}
- \def\Ltext #1{\bsegment
- \textref h:R v:C \htext (-0.08 0){#1}
- \esegment}
- \def\Rtext #1{\bsegment
- \textref h:L v:C \htext (+0.08 0){#1}
- \esegment}
- \move (-1.5 0)
- \bsegment
- \move (+1.55 +0.45) \move (-1.55 -0.45) \move (0 0)
- \Ttext{Horizontal Text}
- \bdot \Btext{\tt h:C v:C}
- \move (-0.9 0) \bdot \Ltext{\tt h:L v:C}
- \move (+0.9 0) \bdot \Rtext{\tt h:R v:C}
- \move (0 +0.3) \bdot \Ttext{\tt h:C v:T}
- \move (0 -0.3) \bdot \Btext{\tt h:C v:B}
- \move (-0.9 -0.3) \bdot \Ltext{\tt h:L v:B}
- \lvec (-0.9 +0.3) \bdot \Ltext{\tt h:L v:T}
- \lvec (+0.9 +0.3) \bdot \Rtext{\tt h:R v:T}
- \lvec (+0.9 -0.3) \bdot \Rtext{\tt h:R v:B}
- \lvec (-0.9 -0.3)
- \esegment
- \def\atext {\rtext td:45 }
- \def\ATtext #1{\bsegment
- \setsegscale 0.707
- \textref h:C v:B \atext (-0.06 +0.06){#1}
- \esegment}
- \def\ABtext #1{\bsegment
- \setsegscale 0.707
- \textref h:C v:T \atext (+0.060 -0.06){#1}
- \esegment}
- \def\ALtext #1{\bsegment
- \setsegscale 0.707
- \textref h:R v:C \atext (-0.08 -0.08){#1}
- \esegment}
- \def\ARtext #1{\bsegment
- \setsegscale 0.707
- \textref h:L v:C \atext (+0.08 +0.08){#1}
- \esegment}
- \move (+1.5 0)
- \bsegment
- \move (+1.33 +1.33) \move (-1.33 -1.33) \move (0 0)
- \setsegscale 0.707
- \ATtext{Rotated Text}
- \bdot \ABtext{\tt h:C v:C}
- \move (-0.9 -0.9) \bdot \ALtext{\tt h:L v:C}
- \move (+0.9 +0.9) \bdot \ARtext{\tt h:R v:C}
- \move (-0.3 +0.3) \bdot \ATtext{\tt h:C v:T}
- \move (+0.3 -0.3) \bdot \ABtext{\tt h:C v:B}
- \move (-0.6 -1.2) \bdot \ALtext{\tt h:L v:B}
- \lvec (-1.2 -0.6) \bdot \ALtext{\tt h:L v:T}
- \lvec (+0.6 +1.2) \bdot \ARtext{\tt h:R v:T}
- \lvec (+1.2 +0.6) \bdot \ARtext{\tt h:R v:B}
- \lvec (-0.6 -1.2)
- \esegment
-}
-
-\vfill
-\eject
-
-
-\bigskip
-\centertexdraw{
- \move(-0.75 -0.25) \lvec (-0.75 +0.5) \lvec (+0.75 +0.5)
- \lvec(+0.75 -0.25) \ifill f:0.9 % fill the region
- \move(0 0)
- \avec(-0.75 -0.25) \textref h:R v:C \htext{H-text}
- \move(0 0) \avec(-0.75 +0.25) \textref h:R v:B \htext{H-text}
- \move(0 0) \avec(0 +0.5) \textref h:L v:T \vtext{V-text}
- \move(0 0) \avec(+0.75 +0.25) \textref h:L v:B \htext{H-text}
- \move(0 0) \avec(+0.75 -0.25) \textref h:L v:C \htext{H-text}
- \move (-1.15 -0.3) \move (+1.15 +0.92) % increase the size of the drawing
-}
-
-\bigskip
-\centertexdraw{
- \linewd 0.02
- \fcir f:0.7 r:1
- \larc r:1 sd:45 ed:135
- \lvec ( 0.707 0.707) \move (0 0) \lvec (-0.707 +0.707)
-}
-
-\bigskip
-\centertexdraw{
- \def\Ltext #1{\bsegment
- \textref h:R v:C \htext (-0.08 0){#1}
- \esegment}
- \def\Rtext #1{\bsegment
- \textref h:L v:C \htext (+0.08 0){#1}
- \esegment}
- \def\bdot {\fcir f:0 r:0.02 }
- \def\Ldot #1{\bdot \Ltext{#1}}
- \def\Rdot #1{\bdot \Rtext{#1}}
- \move (-2 0)
- \bsegment
- \lpatt (0.033)
- \move (0 0) \Ldot{0} \lvec (0 1) \Ldot{1}
- \lvec (1 1) \Rdot{2} \lvec (1 0) \Rdot{3}
- \lpatt ()
- \move (0 0) \clvec (0 1)(1 1)(1 0)
- \esegment
- \move (0 0)
- \bsegment
- \lpatt (0.033)
- \move (0 0) \Ldot{0} \lvec (0.5 0.8) \Ldot{1}
- \lvec (1.5 0.8) \Rdot{2} \lvec (1 0) \Rdot{3}
- \lpatt ()
- \move (0 0) \clvec (0.5 1)(1.5 1)(1 0)
- \esegment
- \move ( 2 0)
- \bsegment
- \lpatt (0.033)
- \move (0 0) \Ldot{0} \lvec (0 1) \Ldot{1}
- \lvec (1 0) \Rdot{2} \lvec (1 1) \Rdot{3}
- \lpatt ()
- \move (0 0) \clvec (0 1)(1 0)(1 1)
- \esegment
-}
-
-\bigskip
-\centertexdraw{
-\move (0.5 0)
-\lvec (0 0.5) \clvec (0.5 0.85)(1 0.65)(1.5 1)
-\lvec (2 0.5) \clvec (1.5 0.15)(1 0.35)(0.5 0)
-\lfill f:0.8
-}
-
-\vfill
-\eject
-
-
-\bigskip
-\def\tbox #1{\bsegment
- \lvec (0 +0.25) \lvec (0.75 +0.25)
- \lvec (0.75 -0.25) \lvec (0 -0.25) \lvec (0 0)
- \textref h:C v:C \htext (0.375 0){#1}
- \savepos (0.75 0)(*ex *ey)
- \esegment
- \move (*ex *ey)}
-\centertexdraw{
- \ravec (1 0) \tbox{$H(z)$} \ravec (1 0)
-}
-
-\bigskip
-\def\cavec (#1 #2)(#3 #4)(#5 #6){
- \clvec (#1 #2)(#3 #4)(#5 #6)
- \cossin (#3 #4)(#5 #6)\cosa\sina
- \rmove (0 0) % stroke the Bezier curve
- \bsegment
- \drawdim in \setsegscale 0.05
- \move ({-\cosa} -\sina) \avec (0 0)
- \esegment}
-
-\def\caw (#1 #2){
- \currentpos \xa\ya
- \cossin ({\xa} \ya)(#1 #2)\cosa\sina
-
-% The nominal wiggly curve is (0 0) (1+dx dy) (-dx -dy) (1 0)
-% Find the rotated offset (dx dy) -> (du dv)
- \rotatecoord (0.4 0.1)\cosa\sina \du\dv
-
-% calculate the length of the vector
- \vectlen ({\xa} \ya)(#1 #2)\len
-
-% draw the curve in normalized units
- \bsegment
- \setsegscale {\len}
- \realadd \cosa \du \tmpa \realadd \sina \dv \tmpb
- \cavec ({\tmpa} \tmpb)({-\du} -\dv)({\cosa} \sina)
- \esegment
-
- \move (#1 #2)}
-
-% rotate a coordinate (x y)
-% arguments: (x y) cosa sina x' y'
-% x' = cosa * x - sina * y; y' = sina * x + cosa * y
-\def\rotatecoord (#1 #2)#3#4#5#6{
- \getpos (#1 #2)\xarg\yarg
- \realmult \xarg {#3} \tmpa \realmult \yarg {#4} \tmpb
- \realadd \tmpa {-\tmpb} #5
- \realmult \xarg {#4} \tmpa \realmult \yarg {#3} \tmpb
- \realadd \tmpa \tmpb #6}
-
-\centertexdraw{
- \arrowheadtype t:W
- \move (0 0)
- \cavec (1.4 0.1)(-0.4 -0.1)(1 0)
- \move (1 0) \caw (1 1) \htext{tip at \tt (1 1)}
- \move (1 0) \caw (2 1) \htext{tip at \tt (2 1)}
- \move (1 0) \caw (2 0) \htext{tip at \tt (2 0)}
- \move (0 1.13) \move (0 -0.04)
-}
-
-\vfill
-\eject
-
-
-\bigskip
-\def\delay {\bsegment
- \setsegscale 0.3
- \lvec (0 +0.5) \lvec (1 +0.5) \lvec (1 -0.5)
- \lvec (0 -0.5) \lvec (0 0)
- \textref h:C v:C \htext (0.5 0){$z^{-1}$}
- \savepos (1 0)(*ex *ey)
- \esegment
- \move (*ex *ey)}
-\def\bdot {\fcir f:0 r:0.02 }
-\def\Ttext #1{\bsegment
- \textref h:C v:B \htext (0 +0.06){#1}
- \esegment}
-\def\Btext #1{\bsegment
- \textref h:C v:T \htext (0 -0.06){#1}
- \esegment}
-\def\Ltext #1{\bsegment
- \textref h:R v:C \htext (-0.06 0){#1}
- \esegment}
-\def\Rtext #1{\bsegment
- \textref h:L v:C \htext (+0.06 0){#1}
- \esegment}
-\def\cradius {0.08}
-\def\pluss {\bsegment
- \setsegscale {\cradius}
- \move (-0.5 0) \lvec (+0.5 0)
- \move (0 -0.5) \lvec (0 +0.5)
- \esegment}
-\def\pcir {\lcir r:{\cradius} \pluss}
-\def\puttext (#1 #2)#3{\bsegment
- \setsegscale {\cradius}
- \textref h:C v:C \htext (#1 #2){#3}
- \esegment}
-\def\putwnw #1{\puttext (-1.7 +1.2){#1}}
-\def\putwsw #1{\puttext (-1.7 -1.2){#1}}
-\def\putn #1{\puttext ( 0 +2 ){#1}}
-\def\puts #1{\puttext ( 0 -2 ){#1}}
-\def\avectoc (#1 #2){\currentpos \xa\ya
- \cossin ({\xa} \ya)(#1 #2)\cosa\sina
- \savepos (#1 #2)(*tx *ty)
- \bsegment
- \move (*tx *ty)
- \setsegscale {\cradius}
- \rmove ({-\cosa} -\sina)
- \savecurrpos (*ex *ey)
- \esegment
- \avec (*ex *ey)
- \move (#1 #2)}
-\def\avecfrc (#1 #2){\currentpos \xa\ya
- \cossin ({\xa} \ya)(#1 #2)\cosa\sina
- \bsegment
- \setsegscale {\cradius}
- \move ({\cosa} \sina)
- \savecurrpos (*ex *ey)
- \esegment
- \move (*ex *ey)
- \avec (#1 #2)}
-
-\centertexdraw{
-\drawdim in
-\arrowheadtype t:F \arrowheadsize l:0.08 w:0.04
-\def\pl {$\scriptscriptstyle +$} \def\mn {$\scriptscriptstyle -$}
-
-\move (0 +0.63) \move (0 -0.60) \move (0 0) % compensate for the text size
-
-% Input to the first stage
-\bsegment
- \Ltext{$x(n)$}
- \lvec (0.3 0) \bdot \lvec (0.3 +0.4)
- \move (0.3 0) \lvec (0.3 -0.4)
- \savepos (0.3 0)(*ex *ey)
-\esegment
-\move (*ex *ey)
-
-% first lattice stage
-\bsegment
- \move (0 +0.4) \avectoc (1.7 +0.4)
- \pcir \putwnw{\pl} \puts{\mn}
- \avecfrc (2.1 +0.4)
- \move (0 -0.4) \avec (0.4 -0.4) \delay \avectoc (1.7 -0.4)
- \pcir \putwsw{\pl} \putn{\mn}
- \avecfrc (2.1 -0.4)
- \move (0.9 +0.4) \bdot \avectoc (1.7 -0.4)
- \move (0.9 -0.4) \bdot \avectoc (1.7 +0.4)
- \move (0.1 +0.42) \Ttext {$f_0(n)$}
- \move (2.0 +0.42) \Ttext {$f_1(n)$}
- \move (0.1 -0.4) \Btext {$b_0(n)$}
- \move (2.0 -0.4) \Btext {$b_1(n)$}
- \textref h:L v:B \htext (1.15 +0.2){$K_1$}
- \textref h:L v:T \htext (1.15 -0.2){$K_1$}
- \savepos (2.1 0)(*ex *ey)
-\esegment
-\move (*ex *ey)
-
-% center section
-\bsegment
- \textref h:C v:C
- \htext (0.3 +0.4){$\cdots$}
- \htext (0.3 -0.4){$\cdots$}
- \savepos (0.6 0)(*ex *ey)
-\esegment
-\move (*ex *ey)
-
-% last lattice stage
-\bsegment
- \move (0 +0.4) \avectoc (1.7 +0.4)
- \pcir \putwnw{\pl} \puts{\mn}
- \avecfrc (2.3 +0.4) \Rtext{$e(n)$}
- \move (0 -0.4) \avec (0.4 -0.4) \delay \avectoc (1.7 -0.4)
- \pcir \putwsw{\pl} \putn{\mn}
- \avecfrc (2.1 -0.4)
- \move (0.9 +0.4) \bdot \avectoc (1.7 -0.4)
- \move (0.9 -0.4) \bdot \avectoc (1.7 +0.4)
- \move (0.1 +0.42) \Ttext {$f_{P-1}(n)$}
- \move (2.0 +0.42) \Ttext {$f_P(n)$}
- \move (0.1 -0.4) \Btext {$b_{P-1}(n)$}
- \move (2.0 -0.4) \Btext {$b_P(n)$}
- \textref h:L v:B \htext (1.15 +0.2){$K_P$}
- \textref h:L v:T \htext (1.15 -0.2){$K_P$}
-\esegment
-}
-
-\bigskip
-\centertexdraw{
-\arrowheadtype t:F \arrowheadsize l:0.08 w:0.04
-\def\ds {\displaystyle}
-\def\ticklab (#1 #2)#3{\move(#1 #2)
- \bsegment
- \lvec (0 0.05)
- \textref h:C v:T \htext (0 -0.05){#3}
- \esegment}
-\def\Rtext #1{\bsegment
- \textref h:L v:C \htext ( 0.08 0){#1}
- \esegment}
-
-\move (2.4 -0.32) % move to set the size
-
-\move (0 0)
-% Axes
-\avec (0 1.4)
-\move (0 0) \avec (2.2 0) \Rtext{$\omega$}
-\ticklab (0 0) {0}
-\ticklab (0.8 0) {$\ds {\pi \over 2N} $}
-\ticklab (1.2 0) {$\omega_s$}
-\ticklab (1.6 0) {$\ds {\pi \over N} $}
-
-\linewd 0.025
-\move (0 1)
-\lvec (0.4 1)
-\lvec (0.44 0.998)
-\lvec (0.48 0.988)
-\lvec (0.52 0.973)
-\lvec (0.56 0.951)
-\lvec (0.60 0.923)
-\lvec (0.64 0.891)
-\lvec (0.68 0.852)
-\lvec (0.72 0.809)
-\lvec (0.76 0.760)
-\lvec (0.80 0.707)
-\lvec (0.84 0.649)
-\lvec (0.88 0.587)
-\lvec (0.92 0.522)
-\lvec (0.96 0.454)
-\lvec (1.00 0.382)
-\lvec (1.04 0.309)
-\lvec (1.08 0.233)
-\lvec (1.12 0.156)
-\lvec (1.16 0.078)
-\lvec (1.20 0)
-\lvec (1.9 0)
-}
-
-\bigskip
-\centertexdraw{
-\arrowheadtype t:V \arrowheadsize l:0.08 w:0.04
-\linewd 0.01
-\setunitscale 1.5 % circle will have radius 1.5 inches
-
-\def\Btext #1{\bsegment
- \textref h:C v:T \htext (0 -0.04){#1}
- \esegment}
-\def\Ttext #1{\bsegment
- \textref h:C v:B \htext (0 0.04){#1}
- \esegment}
-\def\Ltext #1{\bsegment
- \textref h:R v:C \htext (-0.04 0){#1}
- \esegment}
-\def\bdot {\fcir f:0 r:0.0133 }
-\def\vtick {\bsegment
- \move (0 -0.05) \lvec (0 0.05)
- \esegment}
-\def\htick {\bsegment
- \move (-0.05 0) \lvec ( 0.05 0)
- \esegment}
-\def\Hlen #1#2{\bsegment
- \vtick \avec ({#1} 0) \vtick \avec (0 0)
- \relsegscale 0.5
- \move ({#1} 0) \Ttext {#2}
- \esegment}
-\def\Vlen #1#2{\bsegment
- \htick \avec (0 {#1}) \htick \avec (0 0)
- \relsegscale 0.5
- \move (0 {#1}) \Ltext {#2}
- \esegment}
-
-\lcir r:1 % circle
-\move (-1.05 0) \lvec ( 1.05 0) % axes
-\move (0 -1.05) \lvec (0 1.05)
-
-\move (0 0) \lvec (0.707 0.707) \bdot
-\rmove (0.02 0.02) \textref h:L v:B \htext {X}
-\move (0.707 -0.707) \bdot
-\textref h:R v:T \htext(-0.02 -0.02){O}
-
-\move (0.5 0) % center of ellipse
-\bsegment
- \lellip rx:0.435 ry:0.804
- \bdot \Btext {$\beta_2$}
- \move (0 0.15) \Hlen {0.435}{$|\beta_1{+}\beta_3|$}
- \move (-0.7 0) \Vlen {0.804}{$|\beta_1{-}\beta_3|$}
-\esegment
-}
-
-\bye