/* * Some of the character bitmaps below are likely to be subject to * copyright owned by Mullard's corporate successors, who are likely * to be NXP Semiconductors. Copyright in the Arabic glyphs is * probably owned by the European Broadcasting Union or one of its * members. Other than that, the file is covered by the following: * * Copyright (c) 2009 Ben Harris. * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* * This is a program to construct an outline font from a bitmap. It's * based on the character-rounding algorithm of the Mullard SAA5050 * series of Teletext character generators, and thus works best on * character shapes in the same style of those of the SAA5050. This * file includes all of the glyphs from the SAA5050, SAA5051, SAA5052, * SAA5053, SAA5054, SAA5055, SAA5056, and SAA5057. The output is a * Spline Font Database file suitable for feeding to Fontforge. * * The character-smoothing algorithm of the SAA5050 and friends is * a fairly simple means of expanding a 5x9 pixel character to 10x18 * pixels for use on an interlaced display. All it does is to detect * 2x2 clumps of pixels containing a diagonal line and add a couple of * subpixels to it, like this: * * . # -> . . # # -> . . # # or # . -> # # . . -> # # . . * # . . . # # . # # # . # # # . . # # # . * # # . . # # # . . . # # . # # # * # # . . # # . . . . # # . . # # * * This is applied to every occurrence of these patterns, even when * they overlap, and the result is that thin diagonal lines are * smoothed out while other features mostly remain the same. * * One way of extending this towards continuity would be to repeatedly * double the resolution and add more pixels to diagonals each time, * but this ends up with the diagonals being much too heavy. Instead, * in places where the SAA5050 would add pixels, this program adds a * largeish triangle to each unfilled pixel, and remove a small * triangle from each filled one, something like this: * * . # -> . . # # -> . . / # or # . -> # # . . -> # \ . . * # . . . # # . / # / . # # # . . \ # \ . * # # . . / # / . . . # # . \ # \ * # # . . # / . . . . # # . . \ # * * The position of the lines is such that on a long diagonal line, the * amount of filled space is the same as in the rounded bitmap. There * are a few additional complications, in that the trimming of filled * pixels can leave odd gaps where a diagonal stem joins another one, * so the code detects this and doesn't trim in these cases: * * . # # -> . . # # # # -> . . / # # # -> . . / # # # * # . . . . # # # # . / # / # # . / # # # # * # # . . . . / # / . . . / # / . . . * # # . . . . # / . . . . # / . . . . * * That is the interesting part of the program, and is in the dochar() * function. Most of the rest is just dull geometry to join all the * bits together into a sensible outline. Much of the code is wildly * inefficient -- O(n^2) algorithms aren't much of a problem when you * have at most a few thousand points to deal with. * * A rather nice feature of the outlines produced by this program is * that when rasterised at precisely 10 or 20 pixels high, they * produce the input and output respectively of the character-rounding * process. While there are obious additional smoothings that could * be applied, doing so would probably lose this nice property. * * The glyph bitmaps included below include all the ones from the various * members of the SAA5050 family that I know about. They are as shown * in the datasheet, and the English ones have been checked against a * real SAA5050. Occasionally, different languages have different * glyphs for the same character -- these are represented as * alternates, with the default being the glyph that looks best. * * There are some extra glyphs included as well, some derived from * standard ones and some made from whole cloth. They are built on * the same 5x9 matrix as the originals, and processed in the same way. * In general, they leave the left column and bottom row of a 6x10 box * empty, but there is one exception: Arabic glyphs which connect to * the left have one pixel set in the left column, on the assumption * that a decent Arabic character generator would have to do this too. */ #include #include #include #include #define XSIZE 6 #define YSIZE 10 /* Size of pixels in font design units (usually 1000/em) */ #define XPIX 100 #define YPIX 100 struct corner { int tl, tr, bl, br; }; void doprologue(void); void dochar(char data[YSIZE], unsigned flags); struct glyph { char data[YSIZE]; int unicode; char const *name; unsigned int flags; #define SC 0x01 /* Character has a small-caps variant. */ #define SA 0x02 /* Character has a stylistic alternate (%s.alt) */ /* Arabic classes */ #define ARX 0x100 /* Arabic glyph joins to the right */ #define ALX 0x200 /* Arabic glyph joins to the left */ #define ADX 0x300 /* Arabic glyph joins on both sides */ #define Amask 0xf0 #define A1 0x310 /* Dual-joining Arabic character with upwards tail. */ #define A2 0x320 /* Dual-joining Arabic character with downwards tail. */ #define A3 0x330 /* Dual-joining Arabic character with loopy tail. */ #define AFI 0x340 /* Dual-joining Arabic character with special X_n/X_r form. */ } glyphs[] = { /* * The first batch of glyphs comes from the code tables at the end of * the Mullard SAA5050 series datasheet, dated July 1982. */ /* US ASCII (SAA5055) character set */ {{000,000,000,000,000,000,000,000,000}, 0x0020, "space" }, {{004,004,004,004,004,000,004,000,000}, 0x0021, "exclam" }, {{012,012,012,000,000,000,000,000,000}, 0x0022, "quotedbl" }, {{012,012,037,012,037,012,012,000,000}, 0x0023, "numbersign" }, {{016,025,024,016,005,025,016,000,000}, 0x0024, "dollar" }, {{030,031,002,004,010,023,003,000,000}, 0x0025, "percent" }, {{010,024,024,010,025,022,015,000,000}, 0x0026, "ampersand" }, {{004,004,010,000,000,000,000,000,000}, 0x2019, "quoteright" }, {{002,004,010,010,010,004,002,000,000}, 0x0028, "parenleft" }, {{010,004,002,002,002,004,010,000,000}, 0x0029, "parenright" }, {{004,025,016,004,016,025,004,000,000}, 0x002a, "asterisk" }, {{000,004,004,037,004,004,000,000,000}, 0x002b, "plus" }, {{000,000,000,000,000,004,004,010,000}, 0x002c, "comma", SA }, {{000,000,000,016,000,000,000,000,000}, 0x002d, "hyphen" }, {{000,000,000,000,000,000,004,000,000}, 0x002e, "period", SA }, {{000,001,002,004,010,020,000,000,000}, 0x002f, "slash" }, {{004,012,021,021,021,012,004,000,000}, 0x0030, "zero" }, {{004,014,004,004,004,004,016,000,000}, 0x0031, "one" }, {{016,021,001,006,010,020,037,000,000}, 0x0032, "two" }, {{037,001,002,006,001,021,016,000,000}, 0x0033, "three" }, {{002,006,012,022,037,002,002,000,000}, 0x0034, "four" }, {{037,020,036,001,001,021,016,000,000}, 0x0035, "five" }, {{006,010,020,036,021,021,016,000,000}, 0x0036, "six" }, {{037,001,002,004,010,010,010,000,000}, 0x0037, "seven" }, {{016,021,021,016,021,021,016,000,000}, 0x0038, "eight" }, {{016,021,021,017,001,002,014,000,000}, 0x0039, "nine" }, {{000,000,004,000,000,000,004,000,000}, 0x003a, "colon", SA }, {{000,000,004,000,000,004,004,010,000}, 0x003b, "semicolon", SA }, {{002,004,010,020,010,004,002,000,000}, 0x003c, "less" }, {{000,000,037,000,037,000,000,000,000}, 0x003d, "equal" }, {{010,004,002,001,002,004,010,000,000}, 0x003e, "greater" }, {{016,021,002,004,004,000,004,000,000}, 0x003f, "question" }, {{016,021,027,025,027,020,016,000,000}, 0x0040, "at" }, {{004,012,021,021,037,021,021,000,000}, 0x0041, "A", SC }, {{036,021,021,036,021,021,036,000,000}, 0x0042, "B", SC }, {{016,021,020,020,020,021,016,000,000}, 0x0043, "C", SC }, {{036,021,021,021,021,021,036,000,000}, 0x0044, "D", SC|SA }, {{037,020,020,036,020,020,037,000,000}, 0x0045, "E", SC }, {{037,020,020,036,020,020,020,000,000}, 0x0046, "F", SC }, {{016,021,020,020,023,021,017,000,000}, 0x0047, "G", SC }, {{021,021,021,037,021,021,021,000,000}, 0x0048, "H", SC }, {{016,004,004,004,004,004,016,000,000}, 0x0049, "I", SC }, {{001,001,001,001,001,021,016,000,000}, 0x004a, "J", SC }, {{021,022,024,030,024,022,021,000,000}, 0x004b, "K", SC }, {{020,020,020,020,020,020,037,000,000}, 0x004c, "L", SC|SA }, {{021,033,025,025,021,021,021,000,000}, 0x004d, "M", SC }, {{021,021,031,025,023,021,021,000,000}, 0x004e, "N", SC }, {{016,021,021,021,021,021,016,000,000}, 0x004f, "O", SC }, {{036,021,021,036,020,020,020,000,000}, 0x0050, "P", SC }, {{016,021,021,021,025,022,015,000,000}, 0x0051, "Q", SC }, {{036,021,021,036,024,022,021,000,000}, 0x0052, "R", SC }, {{016,021,020,016,001,021,016,000,000}, 0x0053, "S", SC }, {{037,004,004,004,004,004,004,000,000}, 0x0054, "T", SC }, {{021,021,021,021,021,021,016,000,000}, 0x0055, "U", SC }, {{021,021,021,012,012,004,004,000,000}, 0x0056, "V", SC }, {{021,021,021,025,025,025,012,000,000}, 0x0057, "W", SC }, {{021,021,012,004,012,021,021,000,000}, 0x0058, "X", SC }, {{021,021,012,004,004,004,004,000,000}, 0x0059, "Y", SC }, {{037,001,002,004,010,020,037,000,000}, 0x005a, "Z", SC }, {{017,010,010,010,010,010,017,000,000}, 0x005b, "bracketleft" }, {{000,020,010,004,002,001,000,000,000}, 0x005c, "backslash" }, {{036,002,002,002,002,002,036,000,000}, 0x005d, "bracketright" }, {{004,012,021,000,000,000,000,000,000}, 0x005e, "asciicircum" }, {{000,000,000,000,000,000,037,000,000}, 0x005f, "underscore" }, {{004,004,002,000,000,000,000,000,000}, 0x201b, "quotereversed" }, {{000,000,016,001,017,021,017,000,000}, 0x0061, "a", SC }, {{020,020,036,021,021,021,036,000,000}, 0x0062, "b", SC }, {{000,000,017,020,020,020,017,000,000}, 0x0063, "c", SC }, {{001,001,017,021,021,021,017,000,000}, 0x0064, "d", SC }, {{000,000,016,021,037,020,016,000,000}, 0x0065, "e", SC }, {{002,004,004,016,004,004,004,000,000}, 0x0066, "f", SC }, {{000,000,017,021,021,021,017,001,016}, 0x0067, "g", SC }, {{020,020,036,021,021,021,021,000,000}, 0x0068, "h", SC }, {{004,000,014,004,004,004,016,000,000}, 0x0069, "i", SC }, {{004,000,004,004,004,004,004,004,010}, 0x006a, "j", SC }, {{010,010,011,012,014,012,011,000,000}, 0x006b, "k", SC }, {{014,004,004,004,004,004,016,000,000}, 0x006c, "l", SC }, {{000,000,032,025,025,025,025,000,000}, 0x006d, "m", SC }, {{000,000,036,021,021,021,021,000,000}, 0x006e, "n", SC }, {{000,000,016,021,021,021,016,000,000}, 0x006f, "o", SC }, {{000,000,036,021,021,021,036,020,020}, 0x0070, "p", SC }, {{000,000,017,021,021,021,017,001,001}, 0x0071, "q", SC }, {{000,000,013,014,010,010,010,000,000}, 0x0072, "r", SC }, {{000,000,017,020,016,001,036,000,000}, 0x0073, "s", SC }, {{004,004,016,004,004,004,002,000,000}, 0x0074, "t", SC }, {{000,000,021,021,021,021,017,000,000}, 0x0075, "u", SC }, {{000,000,021,021,012,012,004,000,000}, 0x0076, "v", SC }, {{000,000,021,021,025,025,012,000,000}, 0x0077, "w", SC }, {{000,000,021,012,004,012,021,000,000}, 0x0078, "x", SC }, {{000,000,021,021,021,021,017,001,016}, 0x0079, "y", SC }, {{000,000,037,002,004,010,037,000,000}, 0x007a, "z", SC }, {{003,004,004,010,004,004,003,000,000}, 0x007b, "braceleft" }, {{004,004,004,000,004,004,004,000,000}, 0x00a6, "brokenbar" }, {{030,004,004,002,004,004,030,000,000}, 0x007d, "braceright" }, {{010,025,002,000,000,000,000,000,000}, 0x007e, "asciitilde" }, {{037,037,037,037,037,037,037,000,000}, 0x2588, "block" }, /* Extra characters found in the English (SAA5050) character set */ {{006,011,010,034,010,010,037,000,000}, 0x00a3, "sterling" }, {{004,004,004,000,000,000,000,000,000}, 0x0027, "quotesingle" }, {{000,004,010,037,010,004,000,000,000}, 0x2190, "arrowleft", SA }, {{020,020,020,020,026,001,002,004,007}, 0x00bd, "onehalf" }, {{000,004,002,037,002,004,000,000,000}, 0x2192, "arrowright", SA }, {{000,004,016,025,004,004,000,000,000}, 0x2191, "arrowup", SA }, {{000,000,000,037,000,000,000,000,000}, 0x2013, "endash" }, {{010,010,010,010,011,003,005,007,001}, 0x00bc, "onequarter" }, {{012,012,012,012,012,012,012,000,000}, 0x2016, "dblverticalbar" }, {{030,004,030,004,031,003,005,007,001}, 0x00be, "threequarters" }, {{000,004,000,037,000,004,000,000,000}, 0x00f7, "divide" }, /* Extra characters found in the German (SAA5051) character set */ {{000,000,000,000,000,010,010,020,000}, -1, "comma.alt" }, {{000,000,000,000,000,014,014,000,000}, -1, "period.alt" }, {{000,000,000,010,000,000,010,000,000}, -1, "colon.alt" }, {{000,000,010,000,000,010,010,020,000}, -1, "semicolon.alt" }, {{016,021,020,016,021,016,001,021,016}, 0x00a7, "section" }, {{012,000,016,021,037,021,021,000,000}, 0x00c4, "Adieresis" }, {{012,000,016,021,021,021,016,000,000}, 0x00d6, "Odieresis" }, {{012,000,021,021,021,021,016,000,000}, 0x00dc, "Udieresis" }, {{006,011,006,000,000,000,000,000,000}, 0x00b0, "degree" }, {{012,000,016,001,017,021,017,000,000}, 0x00e4, "adieresis" }, {{000,012,000,016,021,021,016,000,000}, 0x00f6, "odieresis" }, {{000,012,000,021,021,021,017,000,000}, 0x00fc, "udieresis" }, {{014,022,022,026,021,021,026,020,020}, 0x00df, "germandbls" }, /* Extra characters found in the Swedish (SAA5052) character set */ {{000,000,021,016,012,016,021,000,000}, 0x00a4, "currency" }, {{002,004,037,020,036,020,037,000,000}, 0x00c9, "Eacute" }, {{016,011,011,011,011,011,016,000,000}, -1, "D.alt", SC }, {{010,010,010,010,010,010,017,000,000}, -1, "L.alt", SC }, {{004,000,016,021,037,021,021,000,000}, 0x00c5, "Aring" }, {{002,004,016,021,037,020,016,000,000}, 0x00e9, "eacute" }, {{004,000,016,001,017,021,017,000,000}, 0x00e5, "aring" }, /* Extra characters found in the Italian (SAA5053) character set */ {{000,000,017,020,020,020,017,002,004}, 0x00e7, "ccedilla", SA }, {{010,004,021,021,021,021,017,000,000}, 0x00f9, "ugrave", SA }, {{010,004,016,001,017,021,017,000,000}, 0x00e0, "agrave" }, {{010,004,000,016,021,021,016,000,000}, 0x00f2, "ograve" }, {{010,004,016,021,037,020,016,000,000}, 0x00e8, "egrave" }, {{010,004,000,014,004,004,016,000,000}, 0x00ec, "igrave" }, /* Extra characters found in the Belgian (SAA5054) character set */ {{012,000,014,004,004,004,016,000,000}, 0x00ef, "idieresis" }, {{012,000,016,021,037,020,016,000,000}, 0x00eb, "edieresis" }, {{004,012,016,021,037,020,016,000,000}, 0x00ea, "ecircumflex" }, {{004,002,021,021,021,021,017,000,000}, -1, "ugrave.alt" }, {{004,012,000,014,004,004,016,000,000}, 0x00ee, "icircumflex" }, {{004,012,016,001,017,021,017,000,000}, 0x00e2, "acircumflex" }, {{004,012,016,021,021,021,016,000,000}, 0x00f4, "ocircumflex" }, {{004,012,000,021,021,021,017,000,000}, 0x00fb, "ucircumflex" }, {{000,000,017,020,020,020,017,002,006}, -1, "ccedilla.alt" }, /* Extra characters found in the Hebrew (SAA5056) character set */ {{000,021,011,025,022,021,021,000,000}, 0x05d0 }, /* alef */ {{000,016,002,002,002,002,037,000,000}, 0x05d1 }, /* bet */ {{000,003,001,001,003,005,011,000,000}, 0x05d2 }, /* gimel */ {{000,037,002,002,002,002,002,000,000}, 0x05d3 }, /* dalet */ {{000,037,001,001,021,021,021,000,000}, 0x05d4 }, /* he */ {{000,014,004,004,004,004,004,000,000}, 0x05d5 }, /* vav */ {{000,016,004,010,004,004,004,000,000}, 0x05d6 }, /* zayin */ {{000,037,021,021,021,021,021,000,000}, 0x05d7 }, /* het */ {{000,021,023,025,021,021,037,000,000}, 0x05d8 }, /* tet */ {{000,014,004,000,000,000,000,000,000}, 0x05d9 }, /* yod */ {{000,037,001,001,001,001,001,001,000}, 0x05da }, /* kaffinal */ {{000,037,001,001,001,001,037,000,000}, 0x05db }, /* kaf */ {{020,037,001,001,001,002,014,000,000}, 0x05dc }, /* lamed */ {{000,037,021,021,021,021,037,000,000}, 0x05dd }, /* memfinal */ {{000,026,011,021,021,021,027,000,000}, 0x05de }, /* mem */ {{000,014,004,004,004,004,004,004,004}, 0x05df }, /* nunfinal */ {{000,006,002,002,002,002,016,000,000}, 0x05e0 }, /* nun */ {{000,037,011,021,021,021,016,000,000}, 0x05e1 }, /* samekh */ {{000,011,011,011,011,012,034,000,000}, 0x05e2 }, /* ayin */ {{000,037,011,015,001,001,001,001,000}, 0x05e3 }, /* pefinal */ {{000,037,011,015,001,001,037,000,000}, 0x05e4 }, /* pe */ {{000,031,012,014,010,010,010,010,000}, 0x05e5 }, /* tsadifinal */ {{000,021,021,012,004,002,037,000,000}, 0x05e6 }, /* tsadi */ {{000,037,001,011,011,012,010,010,000}, 0x05e7 }, /* qof */ {{000,037,001,001,001,001,001,000,000}, 0x05e8 }, /* resh */ {{000,025,025,025,031,021,036,000,000}, 0x05e9 }, /* shin */ {{000,017,011,011,011,011,031,000,000}, 0x05ea }, /* tav */ {{000,000,025,025,016,000,000,000,000}, -1, "oldsheqel" }, /* Extra characters found in the Cyrillic (SAA5057) character set */ {{000,000,021,021,035,025,035,000,000}, 0x044b }, /* yeru */ {{022,025,025,035,025,025,022,000,000}, 0x042e }, /* Iu */ {{016,021,021,021,037,021,021,000,000}, 0x0410 }, /* A */ {{037,020,020,037,021,021,037,000,000}, 0x0411 }, /* Be */ {{022,022,022,022,022,022,037,001,000}, 0x0426 }, /* Tse */ {{006,012,012,012,012,012,037,021,000}, 0x0414 }, /* De */ {{037,020,020,036,020,020,037,000,000}, 0x0415 }, /* Ie */ {{004,037,025,025,025,037,004,000,000}, 0x0424 }, /* Ef */ {{037,020,020,020,020,020,020,000,000}, 0x0413 }, /* Ghe */ {{021,021,012,004,012,021,021,000,000}, 0x0425 }, /* Ha */ {{021,021,023,025,031,021,021,000,000}, 0x0418 }, /* I */ {{025,021,023,025,031,021,021,000,000}, 0x0419 }, /* Ishort */ {{021,022,024,030,024,022,021,000,000}, 0x041a }, /* Ka */ {{007,011,011,011,011,011,031,000,000}, 0x041b }, /* El */ {{021,033,025,025,021,021,021,000,000}, 0x041c }, /* Em */ {{021,021,021,037,021,021,021,000,000}, 0x041d }, /* En */ {{016,021,021,021,021,021,016,000,000}, 0x041e }, /* O */ {{037,021,021,021,021,021,021,000,000}, 0x041f }, /* Pe */ {{017,021,021,017,005,011,021,000,000}, 0x042f }, /* Ya */ {{036,021,021,036,020,020,020,000,000}, 0x0420 }, /* Er */ {{016,021,020,020,020,021,016,000,000}, 0x0421 }, /* Es */ {{037,004,004,004,004,004,004,000,000}, 0x0422 }, /* Te */ {{021,021,021,037,001,001,037,000,000}, 0x0423 }, /* U */ {{025,025,025,016,025,025,025,000,000}, 0x0416 }, /* Zhe */ {{036,021,021,036,021,021,036,000,000}, 0x0412 }, /* Ve */ {{020,020,020,037,021,021,037,000,000}, 0x042c }, /* Soft */ {{030,010,010,017,011,011,017,000,000}, 0x042a }, /* Hard */ {{016,021,001,006,001,021,016,000,000}, 0x0417 }, /* Ze */ {{025,025,025,025,025,025,037,000,000}, 0x0428 }, /* Sha */ {{014,022,001,007,001,022,014,000,000}, 0x042d }, /* E */ {{025,025,025,025,025,025,037,001,000}, 0x0429 }, /* Shcha */ {{021,021,021,037,001,001,001,000,000}, 0x0427 }, /* Che */ {{021,021,021,035,025,025,035,000,000}, 0x042b }, /* Yeru */ {{000,000,022,025,035,025,022,000,000}, 0x044e }, /* yu */ {{000,000,016,001,017,021,017,000,000}, 0x0430 }, /* a */ {{016,020,036,021,021,021,036,000,000}, 0x0431 }, /* be */ {{000,000,022,022,022,022,037,001,000}, 0x0446 }, /* tse */ {{000,000,006,012,012,012,037,021,000}, 0x0434 }, /* de */ {{000,000,016,021,037,020,016,000,000}, 0x0435 }, /* ie */ {{000,004,016,025,025,025,016,004,000}, 0x0444 }, /* ef */ {{000,000,037,020,020,020,020,000,000}, 0x0433 }, /* ghe */ {{000,000,021,012,004,012,021,000,000}, 0x0445 }, /* ha */ {{000,000,021,023,025,031,021,000,000}, 0x0438 }, /* i */ {{000,004,021,023,025,031,021,000,000}, 0x0439 }, /* ishort */ {{000,000,021,022,034,022,021,000,000}, 0x043a }, /* ka */ {{000,000,007,011,011,011,031,000,000}, 0x043b }, /* el */ {{000,000,021,033,025,021,021,000,000}, 0x043c }, /* em */ {{000,000,021,021,037,021,021,000,000}, 0x043d }, /* en */ {{000,000,016,021,021,021,016,000,000}, 0x043e }, /* o */ {{000,000,037,021,021,021,021,000,000}, 0x043f }, /* pe */ {{000,000,017,021,017,005,031,000,000}, 0x044f }, /* ya */ {{000,000,036,021,021,021,036,020,020}, 0x0440 }, /* er */ {{000,000,016,021,020,021,016,000,000}, 0x0441 }, /* es */ {{000,000,037,004,004,004,004,000,000}, 0x0442 }, /* te */ {{000,000,021,021,021,021,017,001,016}, 0x0443 }, /* u */ {{000,000,025,025,016,025,025,000,000}, 0x0436 }, /* zhe */ {{000,000,036,021,036,021,036,000,000}, 0x0432 }, /* ve */ {{000,000,020,020,036,021,036,000,000}, 0x044c }, /* soft */ {{000,000,030,010,016,011,016,000,000}, 0x044a }, /* hard */ {{000,000,016,021,006,021,016,000,000}, 0x0437 }, /* ze */ {{000,000,025,025,025,025,037,000,000}, 0x0448 }, /* sha */ {{000,000,014,022,006,022,014,000,000}, 0x044d }, /* e */ {{000,000,025,025,025,025,037,001,000}, 0x0449 }, /* shcha */ {{000,000,021,021,021,017,001,000,000}, 0x0447 }, /* che */ /* * The second batch of glyphs was found in the appendices to * "Displayable Character Sets for Broadcast Teletext", EBU Tech * 3232-E, second edition, June 1982, as examples of rendering * characters in a 5x9 matrix. */ /* ASV-CODAR glyphs from Appendix 3 */ {{001,001,001,001,001,001,000,000,000}, 0x0627 }, /* alef */ {{000,000,000,001,001,037,000,004,000}, 0x0628, 0, A1 }, /* beh */ {{000,012,000,001,001,077,000,000,000}, 0x062a }, /* teh */ {{004,012,000,001,001,037,000,000,000}, 0x062b, 0, A1 }, /* theh */ {{000,000,010,024,002,037,000,004,000}, 0x062c, 0, A2 }, /* jeem */ {{000,000,010,024,002,037,000,000,000}, 0x062d, 0, A2 }, /* hah */ {{004,000,010,024,002,037,000,000,000}, 0x062e, 0, A2 }, /* khah */ {{000,004,002,001,001,017,000,000,000}, 0x062f }, /* dal */ {{001,004,002,001,001,017,000,000,000}, 0x0630 }, /* thal */ {{000,000,000,001,001,001,002,004,010}, 0x0631 }, /* reh */ {{000,004,000,001,001,001,002,004,010}, 0x0632 }, /* zain */ {{000,000,000,025,025,037,000,000,000}, 0x0633, 0, A3 }, /* seen */ {{004,012,000,025,025,037,000,000,000}, 0x0634, 0, A3 }, /* sheen */ {{000,000,000,007,011,037,000,000,000}, 0x0635, 0, A3 }, /* sad */ {{000,004,000,007,011,037,000,000,000}, 0x0636, 0, A3 }, /* dad */ {{010,010,010,017,011,037,000,000,000}, 0x0637 }, /* tah */ {{010,010,010,017,011,037,000,000,000}, 0xfec4, "uni0637.medi", ALX }, {{010,012,010,017,011,037,000,000,000}, 0x0638 }, /* zah */ {{010,012,010,017,011,037,000,000,000}, 0xfec8, "uni0638.medi", ALX }, {{000,000,006,010,010,037,000,000,000}, 0x0639, 0, A2 }, /* ain */ {{004,000,006,010,010,037,000,000,000}, 0x063a, 0, A2 }, /* ghain */ {{002,000,002,005,003,037,000,000,000}, 0x0641, 0, A1 }, /* feh */ {{012,000,002,005,003,037,000,000,000}, 0x0642, 0, A1 }, /* qaf */ {{001,002,004,016,001,037,000,000,000}, 0x0643, 0, A1 }, /* kaf */ {{001,001,001,001,001,037,000,000,000}, 0x0644, 0, A1 }, /* lam */ {{000,000,000,000,006,031,006,000,000}, 0x0645, 0, A2 }, /* meem */ {{000,000,000,000,006,031,006,000,000}, 0xfee4, "uni0645.medi", A2|ARX }, {{000,004,000,001,001,037,000,000,000}, 0x0646, 0, A1 }, /* noon */ {{000,006,001,015,013,037,000,000,000}, 0x0647, 0, AFI }, /* heh */ {{000,000,000,003,005,007,001,001,016}, 0x0648 }, /* waw */ {{000,000,000,001,001,037,000,012,000}, 0x064a, 0, AFI }, /* yeh */ {{000,000,006,010,010,006,010,000,000}, 0x0621 }, /* hamza */ {{000,000,000,003,025,025,034,000,012}, 0xfef2, "uni064A.fina" }, /* yeh */ {{000,000,000,003,025,025,034,000,000}, 0x0649 }, /* alef maksura */ {{000,000,001,003,005,017,000,000,000}, 0xfeea, "uni0647.fina" }, /* heh */ {{000,024,001,003,005,017,000,000,000}, 0x0629 }, /* teh marbuta */ {{015,011,015,001,001,001,000,000,000}, 0x0623 }, /* hamza on alef */ {{001,001,001,001,015,011,014,000,000}, 0x0625 }, /* hamza under alef */ {{017,010,001,001,001,001,001,000,000}, 0x0622 }, /* madda on alef */ {{014,010,014,001,001,037,000,000,000}, -1, "asvcodar37", A1 }, {{014,010,014,000,003,005,024,022,036}, 0x0626 }, /* hamza on yeh */ {{030,020,030,003,005,007,001,001,016}, 0x0624 }, /* hamza on waw */ {{007,000,000,000,000,000,000,000,000}, 0xfe76, "uni0020064E.isol" }, {{007,000,000,000,000,037,000,000,000}, 0xfe77, "uni0640064E.medi", ADX }, {{003,001,002,000,000,000,000,000,000}, 0xfe78, "uni0020064F.isol" }, {{003,001,002,000,000,037,000,000,000}, 0xfe79, "uni0640064F.medi", ADX }, {{000,000,000,000,000,000,000,000,007}, 0xfe7a, "uni00200650.isol" }, {{000,000,000,000,000,037,000,000,007}, 0xfe7b, "uni06400650.medi", ADX }, {{007,000,005,007,000,000,000,000,000}, -1, "asvcodar46" }, {{003,001,002,000,005,007,000,000,000}, -1, "asvcodar47" }, {{005,007,000,007,000,000,000,000,000}, -1, "asvcodar48" }, {{005,007,000,007,000,037,000,000,000}, -1, "asvcodar49", ADX }, {{007,000,005,007,000,037,000,000,000}, -1, "asvcodar50", ADX }, {{005,007,000,000,000,037,000,000,000}, 0xfe7d, "uni06400651.medi", ADX }, {{005,007,000,000,000,000,000,000,000}, 0xfe7c, "uni00200651.isol" }, {{002,005,002,000,000,000,000,000,000}, 0xfe7e, "uni00200652.isol" }, {{002,005,002,000,000,037,000,000,000}, 0xfe7f, "uni06400652.medi", ADX }, {{016,016,000,000,000,000,000,000,000}, 0xfe70, "uni0020064B.isol" }, {{033,011,022,000,000,000,000,000,000}, -1, "asvcodar56" }, {{000,000,000,000,000,000,000,016,016}, 0xfe74, "uni0020064D.isol" }, {{030,010,025,007,000,037,000,000,000}, -1, "asvcodar58", ADX }, {{007,007,005,007,000,000,000,000,000}, -1, "asvcodar59" }, {{033,011,022,000,005,007,000,000,000}, -1, "asvcodar60" }, {{012,016,000,016,016,000,000,000,000}, -1, "asvcodar61" }, {{014,010,002,005,003,037,000,000,000}, 0x06a4, 0, A1 }, /* veh */ {{000,000,000,001,001,037,000,012,004}, 0x067e, 0, A1 }, /* peh */ {{005,012,024,016,001,037,000,000,000}, 0x06af, 0, A1 }, /* gaf */ /* Arabic-Indic digits from Appendix 9 */ {{000,000,000,004,000,000,000,000,000}, 0x0660 }, /* zero */ {{000,004,004,004,004,004,000,000,000}, 0x0661 }, /* one */ {{000,012,014,010,010,010,000,000,000}, 0x0662 }, /* two */ {{000,025,032,020,020,020,000,000,000}, 0x0663 }, /* three */ {{000,006,010,006,010,006,000,000,000}, 0x0664 }, /* four */ {{000,016,021,021,021,016,000,000,000}, 0x0665 }, /* five */ {{000,016,002,002,002,002,000,000,000}, 0x0666 }, /* six */ {{000,021,021,012,012,004,000,000,000}, 0x0667 }, /* seven */ {{000,004,012,012,021,021,000,000,000}, 0x0668 }, /* eight */ {{000,014,022,016,002,002,000,000,000}, 0x0669 }, /* nine */ /* Appendix 9 also contains a Hebrew alphabet, but we've already got one. */ /* * The third batch of glyphs were specially designed for this font. */ /* Additional glyphs by bjh21 */ {{010,004,002,000,000,000,000,000,000}, 0x0060, "grave" }, {{004,004,004,004,004,004,004,000,000}, 0x007c, "bar" }, {{000,000,004,000,004,004,004,004,004}, 0x00a1, "exclamdown" }, {{000,004,017,024,024,024,017,004,000}, 0x00a2, "cent" }, {{021,012,037,004,037,004,004,000,000}, 0x00a5, "yen" }, {{022,000,000,000,000,000,000,000,000}, 0x00a8, "dieresis" }, {{016,001,017,021,017,000,037,000,000}, 0x00aa, "ordfemenine" }, {{000,000,000,011,022,011,000,000,000}, 0x00ab, "guillemotleft" }, {{000,000,037,001,001,000,000,000,000}, 0x00ac, "logicalnot" }, {{037,000,000,000,000,000,000,000,000}, 0x00af, "macron" }, {{004,004,037,004,004,000,037,000,000}, 0x00b1, "plusminus" }, {{014,002,004,010,016,000,000,000,000}, 0x00b2, "twosuperior" }, {{014,002,014,002,014,000,000,000,000}, 0x00b3, "threesuperior" }, {{002,004,010,000,000,000,000,000,000}, 0x00b4, "acute" }, {{000,000,022,022,022,022,035,020,020}, 0x00b5, "mu" }, {{015,025,025,015,005,005,005,000,000}, 0x00b6, "paragraph" }, {{000,000,000,004,000,000,000,000,000}, 0x00b7, "periodcentered" }, {{000,000,000,000,000,000,004,002,004}, 0x00b8, "cedilla" }, {{004,014,004,004,016,000,000,000,000}, 0x00b9, "onesuperior" }, {{016,021,021,021,016,000,037,000,000}, 0x00ba, "ordmasculine" }, {{000,000,000,022,011,022,000,000,000}, 0x00bb, "guillemotright" }, {{000,000,004,000,004,004,010,021,016}, 0x00bf, "questiondown" }, {{017,024,024,036,024,024,027,000,000}, 0x00c6, "AE" }, {{000,021,012,004,012,021,000,000,000}, 0x00d7, "multiply" }, {{000,000,012,005,017,024,016,000,000}, 0x00e6, "ae" }, {{002,004,004,000,000,000,000,000,000}, 0x2018, "quoteleft" }, {{000,000,000,000,000,004,004,010,000}, 0x201a, "quotesinglbase" }, {{011,022,022,000,000,000,000,000,000}, 0x201c, "quotedblleft" }, {{011,011,022,000,000,000,000,000,000}, 0x201d, "quotedblright" }, {{000,000,000,000,000,011,011,022,000}, 0x201e, "quotedblbase" }, {{022,022,011,000,000,000,000,000,000}, 0x201f }, /* quotedblreversed */ {{000,004,004,025,016,004,000,000,000}, 0x2193, "arrowdown", SA }, {{000,004,010,023,010,004,000,000,000}, -1, "arrowleft.alt" }, {{000,004,002,031,002,004,000,000,000}, -1, "arrowright.alt" }, {{000,004,012,021,004,004,000,000,000}, -1, "arrowup.alt" }, {{000,004,004,021,012,004,000,000,000}, -1, "arrowdown.alt" }, {{000,000,000,037,000,000,000,000,000}, 0x2212, "minus" }, {{037,000,004,004,037,004,004,000,000}, 0x2213 }, /* minusplus */ {{000,000,004,021,000,021,004,000,000}, 0x25cc }, /* dottedcircle */ {{037,021,021,021,021,021,037,000,000}, -1, ".notdef" }, /* Arabic tails */ {{000,000,000,001,001,001,000,000,000}, -1, "tail1", ARX }, {{000,000,000,000,000,001,002,002,001}, -1, "tail2", ARX }, {{000,000,000,002,002,001,000,000,000}, -1, "tail3", ARX }, /* This is getting silly. */ {{000,000,016,021,037,021,021,000,000}, -1, "a.sc" }, {{000,000,036,021,036,021,036,000,000}, -1, "b.sc" }, {{000,000,016,021,020,021,016,000,000}, -1, "c.sc" }, {{000,000,036,021,021,021,036,000,000}, -1, "d.sc" }, {{000,000,037,020,036,020,037,000,000}, -1, "e.sc" }, {{000,000,037,020,036,020,020,000,000}, -1, "f.sc" }, {{000,000,017,020,023,021,017,000,000}, -1, "g.sc" }, {{000,000,021,021,037,021,021,000,000}, -1, "h.sc" }, {{000,000,016,004,004,004,016,000,000}, -1, "i.sc" }, {{000,000,001,001,001,021,016,000,000}, -1, "j.sc" }, {{000,000,021,022,034,022,021,000,000}, -1, "k.sc" }, {{000,000,020,020,020,020,037,000,000}, -1, "l.sc" }, {{000,000,021,033,025,021,021,000,000}, -1, "m.sc" }, {{000,000,021,031,025,023,021,000,000}, -1, "n.sc" }, {{000,000,016,021,021,021,016,000,000}, -1, "o.sc" }, {{000,000,036,021,036,020,020,000,000}, -1, "p.sc" }, {{000,000,016,021,025,022,015,000,000}, -1, "q.sc" }, {{000,000,036,021,036,022,021,000,000}, -1, "r.sc" }, {{000,000,017,020,016,001,036,000,000}, -1, "s.sc" }, {{000,000,037,004,004,004,004,000,000}, -1, "t.sc" }, {{000,000,021,021,021,021,016,000,000}, -1, "u.sc" }, {{000,000,021,021,012,012,004,000,000}, -1, "v.sc" }, {{000,000,021,021,025,025,012,000,000}, -1, "w.sc" }, {{000,000,021,012,004,012,021,000,000}, -1, "x.sc" }, {{000,000,021,012,004,004,004,000,000}, -1, "y.sc" }, {{000,000,037,002,004,010,037,000,000}, -1, "z.sc" }, }; static void dolookups(struct glyph *); inline int getpix(char data[YSIZE], int x, int y, unsigned flags) { if (y == 5 && ((x <= 0 && (flags & ALX)) || (x >= XSIZE && (flags & ARX)))) return 1; if (x < 0 || x >= XSIZE || y < 0 || y >= YSIZE) return 0; else return (data[y] >> (XSIZE - x - 1)) & 1; } int main(int argc, char **argv) { int i, nglyphs = sizeof(glyphs) / sizeof(glyphs[0]); int extraglyphs = 0; for (i = 0; i < nglyphs; i++) if (glyphs[i].unicode == -1) extraglyphs++; printf("SplineFontDB: 3.0\n"); printf("FontName: Bedstead\n"); printf("FullName: Bedstead\n"); printf("FamilyName: Bedstead\n"); printf("Weight: Medium\n"); printf("Copyright: Copyright 2009 Ben Harris and others\n"); printf("Version: 000.900\n"); printf("ItalicAngle: 0\n"); printf("UnderlinePosition: %d\n", -YPIX / 2); printf("UnderlineWidth: %d\n", YPIX); printf("Ascent: %d\n", 7 * YPIX); printf("Descent: %d\n", 3 * YPIX); printf("LayerCount: 2\n"); printf("Layer: 0 0 \"Back\" 1\n"); printf("Layer: 1 0 \"Fore\" 0\n"); printf("Encoding: UnicodeBmp\n"); printf("NameList: Adobe Glyph List\n"); printf("DisplaySize: -24\n"); printf("AntiAlias: 1\n"); printf("FitToEm: 1\n"); printf("BeginPrivate: 2\n"); printf(" StdHW 5 [%d]\n", YPIX); printf(" StdVW 5 [%d]\n", XPIX); printf("EndPrivate\n"); /* Force monochrome at 10 and 20 pixels, and greyscale elsewhere. */ printf("GaspTable: 5 9 2 10 0 19 3 20 0 65535 3\n"); printf("Lookup: 1 0 0 \"salt: stylistic alternates\" {\"salt\"} " "['salt' ('DFLT' <'dflt'> 'arab' <'dflt'> 'latn' <'dflt'>)]\n"); printf("Lookup: 3 0 0 \"aalt: all alternates\" {\"aalt\"} " "['aalt' ('DFLT' <'dflt'> 'arab' <'dflt'> 'latn' <'dflt'>)]\n"); printf("Lookup: 257 0 0 \"palt: proportional metrics\" {\"palt\"} " "['palt' ('DFLT' <'dflt'> 'arab' <'dflt'> 'latn' <'dflt'>)]\n"); printf("Lookup: 1 0 0 \"smcp: lower-case to small caps\" {\"smcp\"} " "['smcp' ('latn' <'dflt'>)]\n"); printf("Lookup: 1 0 0 \"c2sc: upper-case to small caps\" {\"c2sc\"} " "['c2sc' ('latn' <'dflt'>)]\n"); printf("Lookup: 2 0 0 \"fina/isol: Arabic tails\" {\"tails\"} " "['fina' ('arab' <'dflt'>) 'isol' ('arab' <'dflt'>)]\n"); printf("Lookup: 1 0 0 \"fina/isol: Arabic final/isolated form\" " "{\"finaisol\"} " "['fina' ('arab' <'dflt'>) 'isol' ('arab' <'dflt'>)]\n"); printf("BeginChars: %d %d\n", 65536 + extraglyphs, nglyphs); extraglyphs = 0; for (i = 0; i < nglyphs; i++) { if (glyphs[i].name) printf("\nStartChar: %s\n", glyphs[i].name); else printf("\nStartChar: uni%04X\n", (unsigned)glyphs[i].unicode); printf("Encoding: %d %d %d\n", glyphs[i].unicode != -1 ? glyphs[i].unicode : 65536 + extraglyphs++, glyphs[i].unicode, i); printf("Width: %d\n", XSIZE * XPIX); printf("Flags: W\n"); printf("LayerCount: 2\n"); dolookups(&glyphs[i]); dochar(glyphs[i].data, glyphs[i].flags); printf("EndChar\n"); } printf("EndChars\n"); printf("EndSplineFont\n"); return 0; } static void dopalt(struct glyph *g) { int i; unsigned char cols = 0; int dx = 0, dh = 0; /* * For proportional layout, we'd like a left side-bearing of * one pixel, and a right side-bearing of zero. Space * characters get an advance width of three pixels. */ for (i = 0; i < YSIZE; i++) cols |= g->data[i]; if (cols == 0) dh = 3 - XSIZE; else { while (!(cols & 1 << (XSIZE - 2))) { cols <<= 1; dx--; } while (!(cols & 1)) { cols >>= 1; dh--; } } if (dx || dh) printf("Position2: \"palt\" dx=%d dy=0 dh=%d dv=0\n", dx * XPIX, dh * XPIX); } static void dolookups(struct glyph *g) { char glyphname[32]; if (g->name) strcpy(glyphname, g->name); else sprintf(glyphname, "uni%04X", g->unicode); if ((g->flags & SA)) printf("Substitution2: \"salt\" %s.alt\n", glyphname); if ((g->flags & SC)) printf("Substitution2: \"%s\" %c%s.sc\n", isupper((unsigned char)glyphname[0]) ? "c2sc" : "smcp", tolower((unsigned char)glyphname[0]), g->name + 1); if ((g->flags & (SA))) { printf("AlternateSubs2: \"aalt\""); if ((g->flags & SA)) printf(" %s.alt", glyphname); printf("\n"); } switch (g->flags & Amask) { case A1 & Amask: printf("MultipleSubs2: \"tails\" %s tail1\n", glyphname); break; case A2 & Amask: printf("MultipleSubs2: \"tails\" %s tail2\n", glyphname); break; case A3 & Amask: printf("MultipleSubs2: \"tails\" %s tail3\n", glyphname); break; case AFI & Amask: printf("Substitution2: \"finaisol\" %s.fina\n", glyphname); break; } dopalt(g); } typedef struct vec { signed char x, y; } vec; typedef struct point { struct point *next, *prev; struct vec v; } point; #define MAXPOINTS (XSIZE * YSIZE * 20) static point points[MAXPOINTS]; static int nextpoint; static void clearpath() { nextpoint = 0; } static void moveto(unsigned x, unsigned y) { struct point *p = &points[nextpoint++]; p->v.x = x; p->v.y = y; p->next = p->prev = NULL; } static void lineto(unsigned x, unsigned y) { struct point *p = &points[nextpoint++]; p->v.x = x; p->v.y = y; p->next = NULL; p->prev = p - 1; p->prev->next = p; } static void closepath() { struct point *p = &points[nextpoint - 1]; while (p->prev) p--; p->prev = points + nextpoint - 1; points[nextpoint - 1].next = p; } static void killpoint(point *p) { p->prev->next = p->next; p->next->prev = p->prev; p->next = p->prev = NULL; } static vec const zero = { 0, 0 }; static int vec_eqp(vec v1, vec v2) { return v1.x == v2.x && v1.y == v2.y; } static vec vec_sub(vec v1, vec v2) { vec ret; ret.x = v1.x - v2.x; ret.y = v1.y - v2.y; return ret; } static int vec_bearing(vec v) { if (v.x == 0 && v.y > 0) return 0; if (v.x == v.y && v.x > 0) return 1; if (v.x > 0 && v.y == 0) return 2; if (v.x == -v.y && v.x > 0) return 3; if (v.x == 0 && v.y < 0) return 4; if (v.x == v.y && v.x < 0) return 5; if (v.x < 0 && v.y == 0) return 6; if (v.x == -v.y && v.x < 0) return 7; return -1; } static void fix_identical(point *p) { if (!p->next) return; if (vec_eqp(p->next->v, p->v)) killpoint(p); } static int vec_inline3(vec a, vec b, vec c) { return vec_bearing(vec_sub(b, a)) == vec_bearing(vec_sub(c, b)) && vec_bearing(vec_sub(b, a)) != -1; } static int vec_inline4(vec a, vec b, vec c, vec d) { return vec_inline3(a, b, c) && vec_inline3(b, c, d); } static void fix_collinear(point *p) { if (!p->next) return; if (vec_inline3(p->prev->v, p->v, p->next->v)) killpoint(p); } static void fix_isolated(point *p) { if (p->next == p) killpoint(p); } static int done_anything; static void fix_edges(point *a0, point *b0) { point *a1 = a0->next, *b1 = b0->next; assert(a1->prev == a0); assert(b1->prev == b0); assert(a0 != a1); assert(a0 != b0); assert(a1 != b1); assert(b0 != b1); if (vec_bearing(vec_sub(a0->v, a1->v)) == vec_bearing(vec_sub(b1->v, b0->v)) && (vec_inline4(a0->v, b1->v, a1->v, b0->v) || vec_inline4(a0->v, b1->v, b0->v, a1->v) || vec_inline4(b1->v, a0->v, b0->v, a1->v) || vec_inline4(b1->v, a0->v, a1->v, b0->v) || vec_eqp(a0->v, b1->v) || vec_eqp(a1->v, b0->v))) { a0->next = b1; b1->prev = a0; b0->next = a1; a1->prev = b0; fix_isolated(a0); fix_identical(a0); fix_collinear(b1); fix_isolated(b0); fix_identical(b0); fix_collinear(a1); done_anything = 1; } } static void clean_path() { int i, j; do { done_anything = 0; for (i = 0; i < nextpoint; i++) for (j = i+1; points[i].next && j < nextpoint; j++) if (points[j].next) fix_edges(&points[i], &points[j]); } while (done_anything); } static void emit_path() { int i, started = 0; point *p, *p1; for (i = 0; i < nextpoint; i++) { p = &points[i]; if (p->next) { if (!started) printf("Fore\nSplineSet\n"); started = 1; do { printf(" %d %d %s 1\n", p->v.x*XPIX/4, p->v.y*YPIX/4 - 3*YPIX, p == &points[i] && p->next ? "m" : "l"); p1 = p->next; p->prev = p->next = NULL; p = p1; } while (p); } } if (started) printf("EndSplineSet\n"); } static void blackpixel(int x, int y, int bl, int br, int tr, int tl) { x *= 4; y *= 4; if (bl) moveto(x, y); else { moveto(x+1, y); lineto(x, y+1); } if (tl) lineto(x, y+4); else { lineto(x, y+3); lineto(x+1, y+4); } if (tr) lineto(x+4, y+4); else { lineto(x+3, y+4); lineto(x+4, y+3); } if (br) lineto(x+4, y); else { lineto(x+4, y+1); lineto(x+3, y); } closepath(); } static void whitepixel(int x, int y, int bl, int br, int tr, int tl) { x *= 4; y *= 4; if (bl) { moveto(x, y); if (tl) { lineto(x, y+2); lineto(x+1, y+2); } else lineto(x, y+3); if (br) { lineto(x+2, y+1); lineto(x+2, y); } else lineto(x+3, y); closepath(); } if (tl) { moveto(x, y+4); if (tr) { lineto(x+2, y+4); lineto(x+2, y+3); } else lineto(x+3, y+4); if (bl) { lineto(x+1, y+2); lineto(x, y+2); } else lineto(x, y+1); closepath(); } if (tr) { moveto(x+4, y+4); if (br) { lineto(x+4, y+2); lineto(x+3, y+2); } else lineto(x+4, y+1); if (tl) { lineto(x+2, y+3); lineto(x+2, y+4); } else lineto(x+1, y+4); closepath(); } if (br) { moveto(x+4, y); if (bl) { lineto(x+2, y); lineto(x+2, y+1); } else lineto(x+1, y); if (tr) { lineto(x+3, y+2); lineto(x+4, y+2); } else lineto(x+4, y+3); closepath(); } } void dochar(char data[YSIZE], unsigned flags) { struct corner corner[XSIZE][YSIZE] = { }; int x, y; #define GETPIX(x,y) (getpix(data, (x), (y), flags)) clearpath(); for (x = 0; x < XSIZE; x++) { for (y = 0; y < YSIZE; y++) { if (GETPIX(x, y)) { /* Assume filled in */ corner[x][y].tl = 1; corner[x][y].tr = 1; corner[x][y].bl = 1; corner[x][y].br = 1; /* Check for diagonals */ if ((GETPIX(x-1, y) == 0 && GETPIX(x, y-1) == 0 && GETPIX(x-1, y-1) == 1) || (GETPIX(x+1, y) == 0 && GETPIX(x, y+1) == 0 && GETPIX(x+1, y+1) == 1)) { corner[x][y].tr = 0; corner[x][y].bl = 0; } if ((GETPIX(x+1, y) == 0 && GETPIX(x, y-1) == 0 && GETPIX(x+1, y-1) == 1) || (GETPIX(x-1, y) == 0 && GETPIX(x, y+1) == 0 && GETPIX(x-1, y+1) == 1)) { corner[x][y].tl = 0; corner[x][y].br = 0; } /* Avoid odd gaps */ if (GETPIX(x-1, y) == 1 || GETPIX(x-1, y-1) == 1 || GETPIX(x, y-1) == 1) corner[x][y].tl = 1; if (GETPIX(x+1, y) == 1 || GETPIX(x+1, y-1) == 1 || GETPIX(x, y-1) == 1) corner[x][y].tr = 1; if (GETPIX(x-1, y) == 1 || GETPIX(x-1, y+1) == 1 || GETPIX(x, y+1) == 1) corner[x][y].bl = 1; if (GETPIX(x+1, y) == 1 || GETPIX(x+1, y+1) == 1 || GETPIX(x, y+1) == 1) corner[x][y].br = 1; blackpixel(x, YSIZE - y - 1, corner[x][y].bl, corner[x][y].br, corner[x][y].tr, corner[x][y].tl); } else { /* Assume clear */ corner[x][y].tl = 0; corner[x][y].tr = 0; corner[x][y].bl = 0; corner[x][y].br = 0; /* white pixel -- just diagonals */ if (GETPIX(x-1, y) == 1 && GETPIX(x, y-1) == 1 && GETPIX(x-1, y-1) == 0) corner[x][y].tl = 1; if (GETPIX(x+1, y) == 1 && GETPIX(x, y-1) == 1 && GETPIX(x+1, y-1) == 0) corner[x][y].tr = 1; if (GETPIX(x-1, y) == 1 && GETPIX(x, y+1) == 1 && GETPIX(x-1, y+1) == 0) corner[x][y].bl = 1; if (GETPIX(x+1, y) == 1 && GETPIX(x, y+1) == 1 && GETPIX(x+1, y+1) == 0) corner[x][y].br = 1; whitepixel(x, YSIZE - y - 1, corner[x][y].bl, corner[x][y].br, corner[x][y].tr, corner[x][y].tl); } } } clean_path(); emit_path(); }