#!/usr/bin/nodejs /* This is a super hacky bit of code that takes a specially formatted SVG file and creates an Espruino vector font from it. */ // SVG contents from http://forum.espruino.com/conversations/347368/#comment15288563 // Converted with https://nebbishhacker.github.io/svg2bangle/ tolerance 0 var polyImg = [ "NqI3ozmiOKE2oA==", "ZDRiNWQ2ZjZnN2c5ZjpkOmQ8ZjxoO2k5aTdoNWY0", "ZDBiMWEzYTliO2Q8ZDpjOWM3ZDZjNWMzZDJmMmYw", "JDAkMiYyJzMnNCY1IjghOiE8KTwpOiM6IzskOSg2KTQpMygxJjA=", "IUAhTCNMI0A=", "I0ImQidDJ0QmRSNFI0cnRyhIKEknSiNKI0wnTClLKkkqSClGKEUoRilEKUMoQSZAI0A=", "Q0JFQkdDSEVIR0dJRUpDSkNMRkxIS0lKSkhKRElCSEFGQENA", "Q0BBQEFMQ0w=", "WUxZSlNKU0dXR1dFU0VTQllCWUBRQFFM", "YUBhTGNMY0dnR2dFY0VjQmlCaUA=", "E0wRTBVAF0A=", "F0AWQxlMG0w=", "FWYUZhNnE2kUahVqF2sVbBRsEmsRaRFnEmUUZBVkF2U=", "FmUWZBhkGGwWbBZrFWoWaRZnFWY=", "NWQ3ZThnNmc1Zg==", "NWw0bDJrMWkxZzJlNGQ1ZDVmNGYzZzNpNGo1ag==", "NWo2aThpN2s1bA==", "JGYlZiZnJmklaiRqImskbCVsJ2soaShnJ2UlZCRkImU=", "I2UjYCFgIWwjbCNrJGojaSNnJGY=", 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maxPolyLen) maxPolyLen = poly.length; var cx = minx>>4; var cy = miny>>4; var dx = maxx>>4; var dy = maxy>>4; if (cx!=dx || cy!=dy) console.log("Char straddles boundary!"); var charNumber = cx + (cy*16); if (charNumber < 240 && charNumber > lastChar) lastChar = charNumber; if (charNumber < firstChar) firstChar = charNumber; if (charData[charNumber]===undefined) charData[charNumber] = []; charData[charNumber].push(poly); }); function outputCharCode(c, char) { vector_font_c += `// ${c}\n`; if (char!==undefined && char.length) { var elements = 0; char.forEach((poly,n) => { var last = n == char.length-1; vector_font_c += poly.join(",")+ ","+(last?"VF_END_OF_CHAR":"VF_END_OF_POLY")+",\n"; elements += poly.length+1; }); return elements; } else { vector_font_c += "VF_END_OF_CHAR,\n"; return 1; } } var vector_font_c = `/* * This file is part of Espruino, a JavaScript interpreter for Microcontrollers * * Copyright (C) 2020 Gordon Williams * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * ---------------------------------------------------------------------------- * Machine generated vector font header (by build_vector_font.sh) * ---------------------------------------------------------------------------- */ #ifndef NO_VECTOR_FONT #include "graphics.h" const uint8_t vfFirstChar = ${firstChar}; const uint8_t vfLastChar = ${lastChar}; #define VF_END_OF_POLY 0xFE #define VF_END_OF_CHAR 0xFF #define VF_SCALE 12 #define VF_OFFSET_Y (0) static const uint8_t vfPolys[] IN_FLASH_MEMORY = { `; for (var c=firstChar;c<=lastChar;c++) { var char = charData[c]; outputCharCode(c, char); } var accentIndices = []; vector_font_c += `}; static const uint8_t vfAccentPolys[] IN_FLASH_MEMORY = { `; var n = 0; for (var c=240;c<247;c++) { var char = charData[c]; accentIndices[c-240] = n; n += outputCharCode(c, char); } vector_font_c += ` }; static const uint8_t vfAccentPolyIndices[] = {${accentIndices.join(",")}}; static const uint8_t *vfGetCharPtr(char sch, const uint8_t **accentPtr, int *accentX, int *accentY) { unsigned char ch = (unsigned char)sch; if (ch>=192) { // 012345 correspond to 0=grave,1=acute,2=circumflex,3=tilde,4=umlaut,5=ring,6=i without dot char *chrMap = "AAAAAA EEEEIIII NOOOOO UUUUY aaaaaa eeeeiiiionooooo uuuuy y"; char *accMap = "012345 01240124 301234 01241 012345 01240124+301234 01241 4"; if (ch>=192) { int i = ch-192; unsigned char chReplacement = (unsigned char)chrMap[i]; if (chReplacement!=' ') { ch = chReplacement; if (accentPtr) { char acc = accMap[i]; *accentX = 0; *accentY = 0; if (acc>='0' && acc<='5') { *accentPtr = &vfAccentPolys[vfAccentPolyIndices[acc-'0']]; if (ch>='a' && ch<='z') { // lowercase *accentX = -2; *accentY = -4; } else { // uppercase *accentY = -8; } if (ch=='I') *accentX -= 3; if (ch=='i') { *accentX -= 2; return &vfAccentPolys[vfAccentPolyIndices[6]]; // use i without . } } else if (acc!=' ') { *accentPtr = vfGetCharPtr(acc, NULL,NULL,NULL); if (acc=='+') *accentY = -4; } } } } } if (chvfLastChar) return NULL; if (ch==vfFirstChar) return vfPolys; int charCounter = ((uint8_t)ch) - vfFirstChar; for (unsigned int p=0;p < sizeof(vfPolys);p++) { if (vfPolys[p] == VF_END_OF_CHAR) { charCounter--; if (charCounter==0) return &vfPolys[p+1]; } } return 0; // we went past the end } // prints character, returns width unsigned int vfDrawCharPtr(JsGraphics *gfx, int x1, int y1, int size, const uint8_t *charPtr) { x1 = x1<<4; y1 = y1<<4; short poly[${maxPolyLen*2}]; int polyLen = 0; int w = 0; while (*charPtr!=VF_END_OF_CHAR) { if (*charPtr==VF_END_OF_POLY) { graphicsFillPoly(gfx, polyLen, poly); polyLen = 0; } else { uint8_t vertex = *charPtr; int vx = vertex&15; int vy = vertex>>4; if (vx>w) w=vx; poly[polyLen*2 ] = (short)(x1 + vx*size*16/VF_SCALE); poly[polyLen*2+1] = (short)(y1 + (vy+VF_OFFSET_Y)*size*16/VF_SCALE); polyLen++; } charPtr++; } graphicsFillPoly(gfx, polyLen, poly); return (unsigned int)(((w+1)*size*16/VF_SCALE+7)>>4); } // returns the width of a character unsigned int graphicsVectorCharWidth(JsGraphics *gfx, unsigned int size, char ch) { NOT_USED(gfx); const uint8_t *p = vfGetCharPtr(ch, NULL,NULL,NULL); if (!p) return (unsigned int)(size/2); int w = 0; while (*p!=VF_END_OF_CHAR) { if (*p!=VF_END_OF_POLY) { uint8_t vertex = *p; int vx = vertex&15; if (vx>w) w=vx; } p++; } return (unsigned int)(((w+1)*size*16/VF_SCALE+7)>>4); } // prints character, returns width unsigned int graphicsFillVectorChar(JsGraphics *gfx, int x1, int y1, int size, char ch) { const uint8_t *accentPtr = 0; int accentX, accentY; const uint8_t *charPtr = vfGetCharPtr(ch, &accentPtr, &accentX, &accentY); if (!charPtr) return (unsigned int)(size/2); unsigned int w = vfDrawCharPtr(gfx, x1, y1, size, charPtr); unsigned int w2 = 0; if (accentPtr) w2 = vfDrawCharPtr(gfx, x1 + ((accentX*size*16/VF_SCALE)>>4), y1 + ((accentY*size*16/VF_SCALE)>>4), size, accentPtr); return (w2>w)?w2:w; } #endif `; var vector_font_h = `/* * This file is part of Espruino, a JavaScript interpreter for Microcontrollers * * Copyright (C) 2020 Gordon Williams * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * ---------------------------------------------------------------------------- * Machine generated vector font header (by build_vector_font.sh) * ---------------------------------------------------------------------------- */ #ifndef NO_VECTOR_FONT #include "graphics.h" // returns the width of a character unsigned int graphicsVectorCharWidth(JsGraphics *gfx, unsigned int size, char ch); // prints character, returns width unsigned int graphicsFillVectorChar(JsGraphics *gfx, int x1, int y1, int size, char ch); #endif `; require("fs").writeFileSync(__dirname + "/../libs/graphics/vector_font.c", vector_font_c); require("fs").writeFileSync(__dirname + "/../libs/graphics/vector_font.h", vector_font_h);