%!PS-Adobe-2.0 %%Title: 05.three-approaches.fig %%Creator: fig2dev Version 3.2 Patchlevel 1 %%CreationDate: Tue May 15 16:45:13 2001 %%For: anne@quill (Anne Bennett,,,) %%Orientation: Landscape %%BoundingBox: 127 43 485 749 %%Pages: 1 %%BeginSetup %%IncludeFeature: *PageSize Letter %%EndSetup %%Magnification: 1.0000 %%EndComments /MyAppDict 100 dict dup begin def /$F2psDict 200 dict def $F2psDict begin $F2psDict /mtrx matrix put /col-1 {0 setgray} bind def /col0 {0.000 0.000 0.000 srgb} bind def /col1 {0.000 0.000 1.000 srgb} bind def /col2 {0.000 1.000 0.000 srgb} bind def /col3 {0.000 1.000 1.000 srgb} bind def /col4 {1.000 0.000 0.000 srgb} bind def /col5 {1.000 0.000 1.000 srgb} bind def /col6 {1.000 1.000 0.000 srgb} bind def /col7 {1.000 1.000 1.000 srgb} bind def /col8 {0.000 0.000 0.560 srgb} bind def /col9 {0.000 0.000 0.690 srgb} bind def /col10 {0.000 0.000 0.820 srgb} bind def /col11 {0.530 0.810 1.000 srgb} bind def /col12 {0.000 0.560 0.000 srgb} bind def /col13 {0.000 0.690 0.000 srgb} bind def /col14 {0.000 0.820 0.000 srgb} bind def /col15 {0.000 0.560 0.560 srgb} bind def /col16 {0.000 0.690 0.690 srgb} bind def /col17 {0.000 0.820 0.820 srgb} bind def /col18 {0.560 0.000 0.000 srgb} bind def /col19 {0.690 0.000 0.000 srgb} bind def /col20 {0.820 0.000 0.000 srgb} bind def /col21 {0.560 0.000 0.560 srgb} bind def /col22 {0.690 0.000 0.690 srgb} bind def /col23 {0.820 0.000 0.820 srgb} bind def /col24 {0.500 0.190 0.000 srgb} bind def /col25 {0.630 0.250 0.000 srgb} bind def /col26 {0.750 0.380 0.000 srgb} bind def /col27 {1.000 0.500 0.500 srgb} bind def /col28 {1.000 0.630 0.630 srgb} bind def /col29 {1.000 0.750 0.750 srgb} bind def /col30 {1.000 0.880 0.880 srgb} bind def /col31 {1.000 0.840 0.000 srgb} bind def /col32 {0.459 0.490 0.000 srgb} bind def /col33 {0.729 0.459 0.000 srgb} bind def /col34 {0.729 0.302 0.000 srgb} bind def /col35 {0.812 0.141 0.000 srgb} bind def /col36 {0.953 0.141 0.000 srgb} bind def /col37 {0.541 0.502 0.502 srgb} bind def /col38 {0.039 0.035 0.035 srgb} bind def /col39 {0.486 0.486 0.486 srgb} bind def end save 89.0 -11.0 translate 90 rotate 1 -1 scale .9 .9 scale % to make patterns same scale as in xfig % This junk string is used by the show operators /PATsstr 1 string def /PATawidthshow { % cx cy cchar rx ry string % Loop over each character in the string { % cx cy cchar rx ry char % Show the character dup % cx cy cchar rx ry char char PATsstr dup 0 4 -1 roll put % cx cy cchar rx ry char (char) false charpath % cx cy cchar rx ry char /clip load PATdraw % Move past the character (charpath modified the % current point) currentpoint % cx cy cchar rx ry char x y newpath moveto % cx cy cchar rx ry char % Reposition by cx,cy if the character in the string is cchar 3 index eq { % cx cy cchar rx ry 4 index 4 index rmoveto } if % Reposition all characters by rx ry 2 copy rmoveto % cx cy cchar rx ry } forall pop pop pop pop pop % - currentpoint newpath moveto } bind def /PATcg { 7 dict dup begin /lw currentlinewidth def /lc currentlinecap def /lj currentlinejoin def /ml currentmiterlimit def /ds [ currentdash ] def /cc [ currentrgbcolor ] def /cm matrix currentmatrix def end } bind def % PATdraw - calculates the boundaries of the object and % fills it with the current pattern /PATdraw { % proc save exch PATpcalc % proc nw nh px py 5 -1 roll exec % nw nh px py newpath PATfill % - restore } bind def % PATfill - performs the tiling for the shape /PATfill { % nw nh px py PATfill - PATDict /CurrentPattern get dup begin setfont % Set the coordinate system to Pattern Space PatternGState PATsg % Set the color for uncolored pattezns PaintType 2 eq { PATDict /PColor get PATsc } if % Create the string for showing 3 index string % nw nh px py str % Loop for each of the pattern sources 0 1 Multi 1 sub { % nw nh px py str source % Move to the starting location 3 index 3 index % nw nh px py str source px py moveto % nw nh px py str source % For multiple sources, set the appropriate color Multi 1 ne { dup PC exch get PATsc } if % Set the appropriate string for the source 0 1 7 index 1 sub { 2 index exch 2 index put } for pop % Loop over the number of vertical cells 3 index % nw nh px py str nh { % nw nh px py str currentpoint % nw nh px py str cx cy 2 index show % nw nh px py str cx cy YStep add moveto % nw nh px py str } repeat % nw nh px py str } for 5 { pop } repeat end } bind def % PATkshow - kshow with the current pattezn /PATkshow { % proc string exch bind % string proc 1 index 0 get % string proc char % Loop over all but the last character in the string 0 1 4 index length 2 sub { % string proc char idx % Find the n+1th character in the string 3 index exch 1 add get % string proe char char+1 exch 2 copy % strinq proc char+1 char char+1 char % Now show the nth character PATsstr dup 0 4 -1 roll put % string proc chr+1 chr chr+1 (chr) false charpath % string proc char+1 char char+1 /clip load PATdraw % Move past the character (charpath modified the current point) currentpoint newpath moveto % Execute the user proc (should consume char and char+1) mark 3 1 roll % string proc char+1 mark char char+1 4 index exec % string proc char+1 mark... cleartomark % string proc char+1 } for % Now display the last character PATsstr dup 0 4 -1 roll put % string proc (char+1) false charpath % string proc /clip load PATdraw neewath pop pop % - } bind def % PATmp - the makepattern equivalent /PATmp { % patdict patmtx PATmp patinstance exch dup length 7 add % We will add 6 new entries plus 1 FID dict copy % Create a new dictionary begin % Matrix to install when painting the pattern TilingType PATtcalc /PatternGState PATcg def PatternGState /cm 3 -1 roll put % Check for multi pattern sources (Level 1 fast color patterns) currentdict /Multi known not { /Multi 1 def } if % Font dictionary definitions /FontType 3 def % Create a dummy encoding vector /Encoding 256 array def 3 string 0 1 255 { Encoding exch dup 3 index cvs cvn put } for pop /FontMatrix matrix def /FontBBox BBox def /BuildChar { mark 3 1 roll % mark dict char exch begin Multi 1 ne {PaintData exch get}{pop} ifelse % mark [paintdata] PaintType 2 eq Multi 1 ne or { XStep 0 FontBBox aload pop setcachedevice } { XStep 0 setcharwidth } ifelse currentdict % mark [paintdata] dict /PaintProc load % mark [paintdata] dict paintproc end gsave false PATredef exec true PATredef grestore cleartomark % - } bind def currentdict end % newdict /foo exch % /foo newlict definefont % newfont } bind def % PATpcalc - calculates the starting point and width/height % of the tile fill for the shape /PATpcalc { % - PATpcalc nw nh px py PATDict /CurrentPattern get begin gsave % Set up the coordinate system to Pattern Space % and lock down pattern PatternGState /cm get setmatrix BBox aload pop pop pop translate % Determine the bounding box of the shape pathbbox % llx lly urx ury grestore % Determine (nw, nh) the # of cells to paint width and height PatHeight div ceiling % llx lly urx qh 4 1 roll % qh llx lly urx PatWidth div ceiling % qh llx lly qw 4 1 roll % qw qh llx lly PatHeight div floor % qw qh llx ph 4 1 roll % ph qw qh llx PatWidth div floor % ph qw qh pw 4 1 roll % pw ph qw qh 2 index sub cvi abs % pw ph qs qh-ph exch 3 index sub cvi abs exch % pw ph nw=qw-pw nh=qh-ph % Determine the starting point of the pattern fill %(px, py) 4 2 roll % nw nh pw ph PatHeight mul % nw nh pw py exch % nw nh py pw PatWidth mul exch % nw nh px py end } bind def % Save the original routines so that we can use them later on /oldfill /fill load def /oldeofill /eofill load def /oldstroke /stroke load def /oldshow /show load def /oldashow /ashow load def /oldwidthshow /widthshow load def /oldawidthshow /awidthshow load def /oldkshow /kshow load def % These defs are necessary so that subsequent procs don't bind in % the originals /fill { oldfill } bind def /eofill { oldeofill } bind def /stroke { oldstroke } bind def /show { oldshow } bind def /ashow { oldashow } bind def /widthshow { oldwidthshow } bind def /awidthshow { oldawidthshow } bind def /kshow { oldkshow } bind def /PATredef { MyAppDict begin { /fill { /clip load PATdraw newpath } bind def /eofill { /eoclip load PATdraw newpath } bind def /stroke { PATstroke } bind def /show { 0 0 null 0 0 6 -1 roll PATawidthshow } bind def /ashow { 0 0 null 6 3 roll PATawidthshow } bind def /widthshow { 0 0 3 -1 roll PATawidthshow } bind def /awidthshow { PATawidthshow } bind def /kshow { PATkshow } bind def } { /fill { oldfill } bind def /eofill { oldeofill } bind def /stroke { oldstroke } bind def /show { oldshow } bind def /ashow { oldashow } bind def /widthshow { oldwidthshow } bind def /awidthshow { oldawidthshow } bind def /kshow { oldkshow } bind def } ifelse end } bind def false PATredef % Conditionally define setcmykcolor if not available /setcmykcolor where { pop } { /setcmykcolor { 1 sub 4 1 roll 3 { 3 index add neg dup 0 lt { pop 0 } if 3 1 roll } repeat setrgbcolor - pop } bind def } ifelse /PATsc { % colorarray aload length % c1 ... cn length dup 1 eq { pop setgray } { 3 eq { setrgbcolor } { setcmykcolor } ifelse } ifelse } bind def /PATsg { % dict begin lw setlinewidth lc setlinecap lj setlinejoin ml setmiterlimit ds aload pop setdash cc aload pop setrgbcolor cm setmatrix end } bind def /PATDict 3 dict def /PATsp { true PATredef PATDict begin /CurrentPattern exch def % If it's an uncolored pattern, save the color CurrentPattern /PaintType get 2 eq { /PColor exch def } if /CColor [ currentrgbcolor ] def end } bind def % PATstroke - stroke with the current pattern /PATstroke { countdictstack save mark { currentpoint strokepath moveto PATpcalc % proc nw nh px py clip newpath PATfill } stopped { (*** PATstroke Warning: Path is too complex, stroking with gray) = cleartomark restore countdictstack exch sub dup 0 gt { { end } repeat } { pop } ifelse gsave 0.5 setgray oldstroke grestore } { pop restore pop } ifelse newpath } bind def /PATtcalc { % modmtx tilingtype PATtcalc tilematrix % Note: tiling types 2 and 3 are not supported gsave exch concat % tilingtype matrix currentmatrix exch % cmtx tilingtype % Tiling type 1 and 3: constant spacing 2 ne { % Distort the pattern so that it occupies % an integral number of device pixels dup 4 get exch dup 5 get exch % tx ty cmtx XStep 0 dtransform round exch round exch % tx ty cmtx dx.x dx.y XStep div exch XStep div exch % tx ty cmtx a b 0 YStep dtransform round exch round exch % tx ty cmtx a b dy.x dy.y YStep div exch YStep div exch % tx ty cmtx a b c d 7 -3 roll astore % { a b c d tx ty } } if grestore } bind def /PATusp { false PATredef PATDict begin CColor PATsc end } bind def % this is the pattern fill program from the Second edition Reference Manual % with changes to call the above pattern fill % left30 11 dict begin /PaintType 1 def /PatternType 1 def /TilingType 1 def /BBox [0 0 1 1] def /XStep 1 def /YStep 1 def /PatWidth 1 def /PatHeight 1 def /Multi 2 def /PaintData [ { clippath } bind { 32 16 true [ 32 0 0 -16 0 16 ] {} imagemask } bind ] def /PaintProc { pop exec fill } def currentdict end /P1 exch def 1.1111 1.1111 scale %restore scale /cp {closepath} bind def /ef {eofill} bind def /gr {grestore} bind def /gs {gsave} bind def /sa {save} bind def /rs {restore} bind def /l {lineto} bind def /m {moveto} bind def /rm {rmoveto} bind def /n {newpath} bind def /s {stroke} bind def /sh {show} bind def /slc {setlinecap} bind def /slj {setlinejoin} bind def /slw {setlinewidth} bind def /srgb {setrgbcolor} bind def /rot {rotate} bind def /sc {scale} bind def /sd {setdash} bind def /ff {findfont} bind def /sf {setfont} bind def /scf {scalefont} bind def /sw {stringwidth} bind def /tr {translate} bind def /tnt {dup dup currentrgbcolor 4 -2 roll dup 1 exch sub 3 -1 roll mul add 4 -2 roll dup 1 exch sub 3 -1 roll mul add 4 -2 roll dup 1 exch sub 3 -1 roll mul add srgb} bind def /shd {dup dup currentrgbcolor 4 -2 roll mul 4 -2 roll mul 4 -2 roll mul srgb} bind def /$F2psBegin {$F2psDict begin /$F2psEnteredState save def} def /$F2psEnd {$F2psEnteredState restore end} def %%EndProlog $F2psBegin 10 setmiterlimit n -1000 7600 m -1000 -1000 l 13665 -1000 l 13665 7600 l cp clip 0.06000 0.06000 sc %%Page: 1 1 % Polyline 7.500 slw n 4905 3390 m 7665 3390 l 7665 3675 l 4905 3675 l cp gs /PC [[0.49 0.49 0.49] [0.49 0.49 0.49]] def 15.00 15.00 sc P1 [16 0 0 -8 327.00 226.00] PATmp PATsp ef gr PATusp gs col39 s gr /Times-Bold ff 240.00 scf sf 900 5700 m gs 1 -1 sc (CGI programs) col0 sh gr /Times-Bold ff 240.00 scf sf 900 3000 m gs 1 -1 sc (Server host) col0 sh gr /Times-Bold ff 360.00 scf sf 2850 900 m gs 1 -1 sc (Three approaches to designing our system) col0 sh gr /Times-Bold ff 240.00 scf sf 900 6600 m gs 1 -1 sc (Web server) col0 sh gr /Times-Bold ff 240.00 scf sf 5100 4200 m gs 1 -1 sc (Application programs) col0 sh gr /Times-Bold ff 240.00 scf sf 5100 3000 m gs 1 -1 sc (Server host) col0 sh gr /Times-Bold ff 240.00 scf sf 5100 5400 m gs 1 -1 sc (CGI programs) col0 sh gr /Times-Bold ff 240.00 scf sf 5100 6600 m gs 1 -1 sc (Web server) col0 sh gr % Polyline n 9105 4590 m 11865 4590 l 11865 4875 l 9105 4875 l cp gs /PC [[0.49 0.49 0.49] [0.49 0.49 0.49]] def 15.00 15.00 sc P1 [16 0 0 -8 607.00 306.00] PATmp PATsp ef gr PATusp gs col39 s gr /Times-Bold ff 240.00 scf sf 9300 4050 m gs 1 -1 sc (Application programs) col0 sh gr /Times-Bold ff 240.00 scf sf 9300 3000 m gs 1 -1 sc (Server host) col0 sh gr /Times-Bold ff 240.00 scf sf 9300 5400 m gs 1 -1 sc (CGI programs) col0 sh gr /Times-Bold ff 240.00 scf sf 9300 6600 m gs 1 -1 sc (Web server) col0 sh gr /Times-Bold ff 240.00 scf sf 900 3750 m gs 1 -1 sc (Application programs) col0 sh gr /Times-Bold ff 240.00 scf sf 9300 4350 m gs 1 -1 sc (and databases) col0 sh gr % Polyline 15.000 slw gs clippath 11247 5399 m 11100 5400 l 11234 5340 l 11064 5377 l 11077 5436 l cp 11967 4290 m 11850 4200 l 11993 4236 l 11836 4160 l 11810 4214 l cp clip n 11850 4200 m 11879 4214 l 11897 4222 l 11920 4233 l 11947 4246 l 11978 4261 l 12011 4277 l 12045 4295 l 12080 4313 l 12114 4332 l 12146 4351 l 12176 4370 l 12204 4388 l 12228 4406 l 12249 4425 l 12267 4443 l 12281 4461 l 12292 4480 l 12300 4500 l 12305 4519 l 12309 4540 l 12311 4561 l 12312 4584 l 12312 4608 l 12311 4633 l 12310 4659 l 12308 4686 l 12306 4714 l 12303 4742 l 12299 4771 l 12295 4800 l 12291 4829 l 12285 4858 l 12279 4886 l 12272 4914 l 12263 4941 l 12253 4967 l 12241 4992 l 12228 5016 l 12212 5039 l 12194 5060 l 12173 5081 l 12150 5100 l 12130 5114 l 12109 5127 l 12084 5140 l 12058 5153 l 12028 5165 l 11995 5178 l 11960 5190 l 11921 5203 l 11880 5215 l 11836 5228 l 11789 5241 l 11740 5254 l 11689 5267 l 11637 5280 l 11583 5292 l 11530 5305 l 11477 5317 l 11426 5329 l 11376 5340 l 11329 5350 l 11286 5360 l 11247 5369 l 11212 5376 l 11182 5383 l 11157 5388 l 11138 5392 l 11123 5395 l 11100 5400 l gs col0 s gr gr % arrowhead 7.500 slw n 11967 4290 m 11850 4200 l 11993 4236 l 11958 4252 l 11967 4290 l cp gs 0.00 setgray ef gr col0 s % arrowhead n 11247 5399 m 11100 5400 l 11234 5340 l 11217 5375 l 11247 5399 l cp gs 0.00 setgray ef gr col0 s /Courier-Bold ff 300.00 scf sf 5115 3630 m gs 1 -1 sc (chroot chroot) col7 sh gr /Courier-Bold ff 300.00 scf sf 9315 4830 m gs 1 -1 sc (chroot chroot) col7 sh gr /Times-Bold ff 450.00 scf sf 12450 4950 m gs 1 -1 sc (?) col0 sh gr /Times-Bold ff 450.00 scf sf 1350 2100 m gs 1 -1 sc (A) col0 sh gr /Times-Bold ff 450.00 scf sf 5550 2100 m gs 1 -1 sc (B) col0 sh gr /Times-Bold ff 450.00 scf sf 9750 2100 m gs 1 -1 sc (C) col0 sh gr /Times-Bold ff 240.00 scf sf 900 4050 m gs 1 -1 sc (and databases) col0 sh gr /Times-Bold ff 240.00 scf sf 5100 4500 m gs 1 -1 sc (and databases) col0 sh gr /Times-Italic ff 240.00 scf sf 1500 4950 m gs 1 -1 sc (network) col0 sh gr % Polyline 15.000 slw gs clippath 1380 5256 m 1350 5400 l 1320 5256 l 1320 5430 l 1380 5430 l cp 1320 4269 m 1350 4125 l 1380 4269 l 1380 4095 l 1320 4095 l cp clip n 1350 4125 m 1350 5400 l gs /PC [[0.00 0.00 0.00] [0.00 0.00 0.00]] def 15.00 15.00 sc P1 [16 0 0 -8 90.00 275.00] PATmp PATsp ef gr PATusp gs col0 s gr gr % arrowhead 7.500 slw n 1320 4269 m 1350 4125 l 1380 4269 l 1350 4245 l 1320 4269 l cp gs 0.00 setgray ef gr col0 s % arrowhead n 1380 5256 m 1350 5400 l 1320 5256 l 1350 5280 l 1380 5256 l cp gs 0.00 setgray ef gr col0 s $F2psEnd rs end showpage