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%%BeginProlog % % PostScript prolog file of the BLT graph widget. % % Copyright 1989-1992 Regents of the University of California. % Permission to use, copy, modify, and distribute this % software and its documentation for any purpose and without % fee is hereby granted, provided that the above copyright % notice appear in all copies. The University of California % makes no representations about the suitability of this % software for any purpose. It is provided "as is" without % express or implied warranty. % % Copyright 1991-1997 Bell Labs Innovations for Lucent Technologies. % % Permission to use, copy, modify, and distribute this software and its % documentation for any purpose and without fee is hereby granted, provided % that the above copyright notice appear in all copies and that both that the % copyright notice and warranty disclaimer appear in supporting documentation, % and that the names of Lucent Technologies any of their entities not be used % in advertising or publicity pertaining to distribution of the software % without specific, written prior permission. % % Lucent Technologies disclaims all warranties with regard to this software, % including all implied warranties of merchantability and fitness. In no event % shall Lucent Technologies be liable for any special, indirect or % consequential damages or any damages whatsoever resulting from loss of use, % data or profits, whether in an action of contract, negligence or other % tortuous action, arising out of or in connection with the use or performance % of this software. % 200 dict begin /BaseRatio 1.3467736870885982 def % Ratio triangle base / symbol size /BgColorProc 0 def % Background color routine (symbols) /DrawSymbolProc 0 def % Routine to draw symbol outline/fill /StippleProc 0 def % Stipple routine (bar segments) /DashesProc 0 def % Dashes routine (line segments) % Define the array ISOLatin1Encoding (which specifies how characters are % encoded for ISO-8859-1 fonts), if it isn't already present (Postscript % level 2 is supposed to define it, but level 1 doesn't). systemdict /ISOLatin1Encoding known not { /ISOLatin1Encoding [ /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /exclam /quotedbl /numbersign /dollar /percent /ampersand /quoteright /parenleft /parenright /asterisk /plus /comma /minus /period /slash /zero /one /two /three /four /five /six /seven /eight /nine /colon /semicolon /less /equal /greater /question /at /A /B /C /D /E /F /G /H /I /J /K /L /M /N /O /P /Q /R /S /T /U /V /W /X /Y /Z /bracketleft /backslash /bracketright /asciicircum /underscore /quoteleft /a /b /c /d /e /f /g /h /i /j /k /l /m /n /o /p /q /r /s /t /u /v /w /x /y /z /braceleft /bar /braceright /asciitilde /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /space /dotlessi /grave /acute /circumflex /tilde /macron /breve /dotaccent /dieresis /space /ring /cedilla /space /hungarumlaut /ogonek /caron /space /exclamdown /cent /sterling /currency /yen /brokenbar /section /dieresis /copyright /ordfeminine /guillemotleft /logicalnot /hyphen /registered /macron /degree /plusminus /twosuperior /threesuperior /acute /mu /paragraph /periodcentered /cedillar /onesuperior /ordmasculine /guillemotright /onequarter /onehalf /threequarters /questiondown /Agrave /Aacute /Acircumflex /Atilde /Adieresis /Aring /AE /Ccedilla /Egrave /Eacute /Ecircumflex /Edieresis /Igrave /Iacute /Icircumflex /Idieresis /Eth /Ntilde /Ograve /Oacute /Ocircumflex /Otilde /Odieresis /multiply /Oslash /Ugrave /Uacute /Ucircumflex /Udieresis /Yacute /Thorn /germandbls /agrave /aacute /acircumflex /atilde /adieresis /aring /ae /ccedilla /egrave /eacute /ecircumflex /edieresis /igrave /iacute /icircumflex /idieresis /eth /ntilde /ograve /oacute /ocircumflex /otilde /odieresis /divide /oslash /ugrave /uacute /ucircumflex /udieresis /yacute /thorn /ydieresis ] def } if % font ISOEncode font % This procedure changes the encoding of a font from the default % Postscript encoding to ISOLatin1. It is typically invoked just % before invoking "setfont". The body of this procedure comes from % Section 5.6.1 of the Postscript book. /ISOEncode { dup length dict begin {1 index /FID ne {def} {pop pop} ifelse} forall /Encoding ISOLatin1Encoding def currentdict end % I'm not sure why it's necessary to use "definefont" on this new % font, but it seems to be important; just use the name "Temporary" % for the font. /Temporary exch definefont } bind def /Stroke { gsave stroke grestore } def /Fill { gsave fill grestore } def /SetFont { % Stack: pointSize fontName findfont exch scalefont ISOEncode setfont } def /Box { % Stack: x y width height newpath exch 4 2 roll moveto dup 0 rlineto exch 0 exch rlineto neg 0 rlineto closepath } def /SetFgColor { % Stack: red green blue CL 0 eq { pop pop pop 0 0 0 } if setrgbcolor CL 1 eq { currentgray setgray } if } def /SetBgColor { % Stack: red green blue CL 0 eq { pop pop pop 1 1 1 } if setrgbcolor CL 1 eq { currentgray setgray } if } def % The next two definitions are taken from "$tk_library/prolog.ps" % desiredSize EvenPixels closestSize % % The procedure below is used for stippling. Given the optimal size % of a dot in a stipple pattern in the current user coordinate system, % compute the closest size that is an exact multiple of the device's % pixel size. This allows stipple patterns to be displayed without % aliasing effects. /EvenPixels { % Compute exact number of device pixels per stipple dot. dup 0 matrix currentmatrix dtransform dup mul exch dup mul add sqrt % Round to an integer, make sure the number is at least 1, and compute % user coord distance corresponding to this. dup round dup 1 lt {pop 1} if exch div mul } bind def % width height string filled StippleFill -- % % Given a path and other graphics information already set up, this % procedure will fill the current path in a stippled fashion. "String" % contains a proper image description of the stipple pattern and % "width" and "height" give its dimensions. If "filled" is true then % it means that the area to be stippled is gotten by filling the % current path (e.g. the interior of a polygon); if it's false, the % area is gotten by stroking the current path (e.g. a wide line). % Each stipple dot is assumed to be about one unit across in the % current user coordinate system. % width height string StippleFill -- % % Given a path already set up and a clipping region generated from % it, this procedure will fill the clipping region with a stipple % pattern. "String" contains a proper image description of the % stipple pattern and "width" and "height" give its dimensions. Each % stipple dot is assumed to be about one unit across in the current % user coordinate system. This procedure trashes the graphics state. /StippleFill { % The following code is needed to work around a NeWSprint bug. /tmpstip 1 index def % Change the scaling so that one user unit in user coordinates % corresponds to the size of one stipple dot. 1 EvenPixels dup scale % Compute the bounding box occupied by the path (which is now % the clipping region), and round the lower coordinates down % to the nearest starting point for the stipple pattern. Be % careful about negative numbers, since the rounding works % differently on them. pathbbox 4 2 roll 5 index div dup 0 lt {1 sub} if cvi 5 index mul 4 1 roll 6 index div dup 0 lt {1 sub} if cvi 6 index mul 3 2 roll % Stack now: width height string y1 y2 x1 x2 % Below is a doubly-nested for loop to iterate across this area % in units of the stipple pattern size, going up columns then % across rows, blasting out a stipple-pattern-sized rectangle at % each position 6 index exch { 2 index 5 index 3 index { % Stack now: width height string y1 y2 x y gsave 1 index exch translate 5 index 5 index true matrix tmpstip imagemask grestore } for pop } for pop pop pop pop pop } bind def /LS { % Stack: x1 y1 x2 y2 newpath 4 2 roll moveto lineto stroke } def /EndText { %Stack : grestore } def /BeginText { %Stack : w h theta centerX centerY gsave % Translate the origin to the center of bounding box and rotate translate neg rotate % Translate back to the origin of the text region -0.5 mul exch -0.5 mul exch translate } def /DrawAdjText { %Stack : str strWidth x y moveto % Go to the text position exch dup dup 4 2 roll % Adjust character widths to get desired overall string width % adjust X = (desired width - real width)/#chars stringwidth pop sub exch length div 0 3 -1 roll % Flip back the scale so that the string is not drawn in reverse gsave 1 -1 scale ashow grestore } def /DrawBitmap { % Stack: ?bgColorProc? boolean centerX centerY width height theta imageStr gsave 6 -2 roll translate % Translate to center of bounding box 4 1 roll neg rotate % Rotate by theta % Find upperleft corner of bounding box 2 copy -.5 mul exch -.5 mul exch translate 2 copy scale % Make pixel unit scale newpath 0 0 moveto 0 1 lineto 1 1 lineto 1 0 lineto closepath % Fill rectangle with background color 4 -1 roll { gsave 4 -1 roll exec fill grestore } if % Paint the image string into the unit rectangle 2 copy true 3 -1 roll 0 0 5 -1 roll 0 0 6 array astore 5 -1 roll imagemask grestore } def % Symbols: % Skinny-cross /Sc { % Stack: x y symbolSize gsave 3 -2 roll translate 45 rotate 0 0 3 -1 roll Sp grestore } def % Skinny-plus /Sp { % Stack: x y symbolSize gsave 3 -2 roll translate 2 idiv dup 2 copy newpath neg 0 moveto 0 lineto DrawSymbolProc newpath neg 0 exch moveto 0 exch lineto DrawSymbolProc grestore } def % Cross /Cr { % Stack: x y symbolSize gsave 3 -2 roll translate 45 rotate 0 0 3 -1 roll Pl grestore } def % Plus /Pl { % Stack: x y symbolSize gsave 3 -2 roll translate dup 2 idiv exch 6 idiv % % 2 3 The plus/cross symbol is a % closed polygon of 12 points. % 0 1 4 5 The diagram to the left % x,y represents the positions of % 11 10 7 6 the points which are computed % below. % 9 8 % newpath 2 copy exch neg exch neg moveto dup neg dup lineto 2 copy neg exch neg lineto 2 copy exch neg lineto dup dup neg lineto 2 copy neg lineto 2 copy lineto dup dup lineto 2 copy exch lineto 2 copy neg exch lineto dup dup neg exch lineto exch neg exch lineto closepath DrawSymbolProc grestore } def % Circle /Ci { % Stack: x y symbolSize gsave 3 copy pop moveto newpath 2 div 0 360 arc closepath DrawSymbolProc grestore } def % Square /Sq { % Stack: x y symbolSize gsave dup dup 2 div dup 6 -1 roll exch sub exch 5 -1 roll exch sub 4 -2 roll Box DrawSymbolProc grestore } def % Line /Li { % Stack: x y symbolSize gsave 3 1 roll exch 3 -1 roll 2 div 3 copy newpath sub exch moveto add exch lineto stroke grestore } def % Diamond /Di { % Stack: x y symbolSize gsave 3 1 roll translate 45 rotate 0 0 3 -1 roll Sq grestore } def % Triangle /Tr { % Stack: x y symbolSize gsave 3 -2 roll translate BaseRatio mul 0.5 mul % Calculate 1/2 base dup 0 exch 30 cos mul % h1 = height above center point neg % b2 0 -h1 newpath moveto % point 1; b2 dup 30 sin 30 cos div mul % h2 = height below center point 2 copy lineto % point 2; b2 h2 exch neg exch lineto % closepath DrawSymbolProc grestore } def % Arrow /Ar { % Stack: x y symbolSize gsave 3 -2 roll translate BaseRatio mul 0.5 mul % Calculate 1/2 base dup 0 exch 30 cos mul % h1 = height above center point % b2 0 h1 newpath moveto % point 1; b2 dup 30 sin 30 cos div mul % h2 = height below center point neg % -h2 b2 2 copy lineto % point 2; b2 h2 exch neg exch lineto % closepath DrawSymbolProc grestore } def % Bitmap /Bm { % Stack: x y symbolSize gsave 3 1 roll translate pop DrawSymbolProc grestore } def %%EndProlog %%BeginSetup gsave % Save the graphics state % Default line/text style parameters 1 setlinewidth % width 1 setlinejoin % join 0 setlinecap % cap [] 0 setdash % dashes /CL 0 def % Set color level mode 0 0 0 setrgbcolor % color
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