mirror of
https://github.com/espruino/Espruino.git
synced 2025-12-08 19:06:15 +00:00
536 lines
16 KiB
JavaScript
Executable File
536 lines
16 KiB
JavaScript
Executable File
#!/usr/bin/nodejs
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/* This is a super hacky bit of code that takes a specially formatted SVG file
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and creates an Espruino vector font from it.
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*/
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// SVG contents from http://forum.espruino.com/conversations/347368/#comment15288563
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// Converted with https://nebbishhacker.github.io/svg2bangle/ tolerance 0
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var polyImg = [
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"NqI3ozmiOKE2oA==",
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"dORy5XHncely63TsdO117nXtdO5z7nPvde927nbtdex16nTqc+lz53TmdeZ15A==",
|
|
"dep26Xjpd+t17A==",
|
|
"MaU3pTenMac=",
|
|
"07TStNK11bXVtNS01LDTsA==",
|
|
"0rHTsNOx0rI=",
|
|
"57rnu+u767rouuq36bc=",
|
|
"6bfpvOq86rc=",
|
|
"4rDiseSx5LLjsuOz5LPktOK04rXkteW05bPksuSz5bLlseSw",
|
|
"pCimKKYgpCA=",
|
|
"qCepJaIhoSM=",
|
|
"oiehJaghqSM=",
|
|
"sSW5JbknsSc=",
|
|
"tiK2KrQqtCI=",
|
|
"QTdJN0k5QTk="
|
|
];
|
|
|
|
var charData = [];
|
|
var firstChar=255, lastChar=0;
|
|
var maxPolyLen = 0;
|
|
polyImg.forEach(function(polyb64) {
|
|
let buf = new Buffer(polyb64, 'base64');
|
|
var minx=1000,maxx=-1,miny=1000,maxy=-1;
|
|
var poly = [];
|
|
for (var i=0;i<buf.length;i+=2) {
|
|
var x = buf.readUInt8(i);
|
|
var y = buf.readUInt8(i+1);
|
|
if (x<minx) minx=x;
|
|
if (y<miny) miny=y;
|
|
if (x>maxx) maxx=x;
|
|
if (y>maxy) maxy=y;
|
|
poly.push((x&15)+((y&15)<<4));
|
|
}
|
|
if (poly.length > 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 <gw@pur3.co.uk>
|
|
*
|
|
* 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 (ch<vfFirstChar || ch>vfLastChar) 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 <gw@pur3.co.uk>
|
|
*
|
|
* 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);
|