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-rw-r--r--graphics/circuit_macros/examples/svg/sfgSVG.m4102
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diff --git a/graphics/circuit_macros/examples/svg/sfgSVG.m4 b/graphics/circuit_macros/examples/svg/sfgSVG.m4
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+.PS
+# sfgSVG.m4
+gen_init(svg_font(Times,11bp__))
+sfg_init( 1.2 ) # scale default size by 1.2
+
+textht = textht*0.9
+
+# Graph 1
+move right 0.15
+T:[
+ Ft: sfgnode(,f(t),sfgbelow)
+ sfgline(,1/K)
+ Y1: sfgnode(,y`'svg_sub(1),sfgbelow rjust)
+ sfgline(,K/M)
+ DDY2: sfgnode(,y`'svg_sub(2),sfgbelow rjust)
+ {".." at DDY2 +(-3,-1)*textoffset}
+ sfgline(,1/s)
+ DY2: sfgnode(,y`'svg_sub(2) = x`'svg_sub(2),sfgbelow ljust)
+ {"." at DY2 +(2,-1)*textoffset}
+ sfgline(,1/s)
+ Y2: sfgnode(,y`'svg_sub(2) = x`'svg_sub(1),sfgbelow ljust)
+
+ sf = 1
+ sfgarc(from DY2 to DDY2,-B/M,below,,sf)
+ sfgarc(from Y2 to DDY2,-K/M,above,ccw,sf)
+ sfgarc(from Y2 to Y1,1,sfgabove,,sf)
+ ]
+
+# Graph 2
+B: [
+ R1: sfgnode(,r`'svg_sub(1),sfgabove)
+ sfgline(,1)
+ X1: sfgnode(,x`'svg_sub(1),ljust)
+ R2: sfgnode(at R1+(0,-1),r`'svg_sub(2),sfgabove)
+ sfgline(,1)
+ X2: sfgnode(,x`'svg_sub(2),ljust)
+ sfgarc(from X1 to X2,a`'svg_sub(21),rjust,ccw)
+ sfgarc(from X2 to X1,a`'svg_sub(12),ljust,ccw)
+
+ sfgself(at X1,,q`'svg_sub(11))
+ sfgself(at X1,R,a`'svg_sub(11),ljust,cw,1.5)
+ sfgself(at X2,-90,a`'svg_sub(22),sfgbelow)
+ ] with .w at T.e + (linewid/2,-linewid/4)
+
+# Graph 3
+G3: [
+ # change node spacing and increase node size
+ sfg_wid = 0.85; sfg_rad = 0.35/2
+ for_(1,4,1,`N`'m4x: sfgnode(,m4x,,fill_(0.9))
+ sfgself(at N`'m4x,-90,P`'svg_sub(m4x),,cw)
+ ifelse(m4x,4,,`sfgline(,G`'svg_sub(m4x),sfgbelow)') ')
+ sfgarc(from N2 to N1,F`'svg_sub(2),sfgabove,ccw,)
+ sfgarc(from N3 to N1,F`'svg_sub(3),sfgbelow,ccw,1.4)
+] with .nw at T.sw
+
+A: [ sfg_wid = 0.75; sfg_rad = 0.15
+ arrow right linewid*2/3
+ P: sfgnode(,p)
+ sfgself(,90,a,below,cw)
+ arrow from P.e "b" below
+ Q: sfgnode(,q)
+ R: sfgnode(at Q+(Q-P),r) # for dpic
+ sfgarc(from Q to R,c,above,cw)
+ sfgarc(from R to Q,d,below,cw)
+ sfgself(at R,-90,e,above,cw)
+ arrow right linewid*2/3 from R.e
+ ] with .w at G3.e+(linewid/2,0)
+
+define(`svg_choose',`[ P:"svg_fsize(( ),150)"
+ "svg_small(`$1')" at P+(0,7bp__)
+ "svg_small(`$2')" at P-(0,3bp__)
+ ]')
+
+G4: [sfg_init( 2.0,0.25/2 ) # change node spacing and increase node size
+ s1 = 0.9
+ s2 = 1.2
+ N0: sfgnode(,svg_fsize(0,120),,invis)
+ sfgline(right_ sfg_wid,`svg_nu',below,->)
+ N1: sfgnode(,svg_fsize(1,120),,invis)
+ { sfgarc(to N0 ->,(1-p)`svg_gamma'+`svg_nu',above,ccw,s1) }
+ sfgline(right_ sfg_wid,`svg_nu'+`svg_lambda',below,->)
+ N2: sfgnode(,svg_fsize(2,120),,invis)
+ { sfgarc(to N1 ->,,,ccw,s1) }
+ { "p(1-p)svg_gamma+2`'svg_nu" at last [].M+(11bp__,0) above }
+ { svg_choose(2,1) at last [].M+(-29bp__,8bp__) }
+ { sfgarc(to N0 ->,(1-p)svg_sup(2)`svg_gamma',above,ccw,s2) }
+ sfgline(right_ sfg_wid,`svg_nu'+2`svg_lambda',below,->)
+ N3: sfgnode(,svg_fsize(3,120),,invis)
+ { sfgarc(to N2 ->,,,ccw,s1) }
+ { "p`'svg_sup(2)(1-p)svg_gamma+3`'svg_nu" at last [].M+(0bp__,0) above }
+ { svg_choose(3,2) at last [].M+(-43bp__,8bp__) }
+ { sfgarc(to N1 ->,,,ccw,s2) }
+ { "p(1-p)`'svg_sup(2)`'svg_gamma" at last [].M+(8bp__,0) above }
+ { svg_choose(3,1) at last [].M+(-26bp__,8bp__) }
+ { sfgarc(to N0 ->,(1-p)svg_sup(3)`svg_gamma',above,ccw,s2) }
+ sfgline(right_ sfg_wid*2/3,`svg_nu'+3`svg_lambda',below,->)
+ {"..." wid 0.3 ljust}
+ ] with .nw at G3.sw+(0,-0.1)
+
+ move from (T.w,G4.s)-(7bp__,6bp__) to B.ne+(15bp__,6bp__)
+ command "</g>" # end font
+.PE