Update 'palette-gen.js'

.gitignore

@@ -0,0 +1,4 @@
+palette.in
+palette.out
+gifpalette.out
+build/

Makefile

@@ -0,0 +1,23 @@
+
+SRCDIR:= img
+DSTDIR:= build
+SOURCES := $(shell find ${SRCDIR} -type f -print)
+FILES := $(patsubst $(SRCDIR)/%,$(DSTDIR)/%,$(SOURCES))
+
+all: $(FILES)
+
+palette.out: palette.in
+	node palette-gen.js
+
+builddir:
+	@mkdir -p build
+	@mkdir -p build/gif
+
+build/%: img/% builddir palette.out 
+	repalette $< $@ -p $$(cat palette.out) --dither $(DITHER)
+
+build/%.gif: img/%.gif builddir palette.out
+	gifsicle --use-colormap gifpalette.out < $< > $@
+
+clean:
+	@rm -rf palette.in palette.out build

palette-gen.js

@@ -1,7 +1,7 @@
 #!/bin/nodejs
 
 const componentToHex = (c) => ("0" + c.toString(16)).slice(-2);
-const rgbToHex = (c) =>  "#" + componentToHex(c.r) + componentToHex(c.g) + componentToHex(c.b);
+const rgbToHex = (c) => componentToHex(c.r) + componentToHex(c.g) + componentToHex(c.b);
 const hexToRgb = (hex) => {
     const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
     return result ? {
@@ -9,7 +9,7 @@ const hexToRgb = (hex) => {
     } : null;
 };
   
-const parseScheme = (str) => str.split(",").map(e=>hexToRgb(e))
+const parseScheme = (str) => str.replace(/\s+/g, '').split(",").map(e=>hexToRgb(e))
 
 const getTint = (c, w) => Math.round(c + (255 - c) * 1 * w);
 const getShade = (c, w) => Math.round(c * w);
@@ -17,19 +17,25 @@ const getShade = (c, w) => Math.round(c * w);
 const tint = (c, w) => ({r:getTint(c.r, w), g:getTint(c.g, w), b:getTint(c.b, w)});
 const shade = (c, w) => ({r:getShade(c.r, w), g:getShade(c.g, w), b:getShade(c.b, w)});
 
-const tints = (c, w) => Array.from({ length: 100 / w }, (_, i) => tint(c, (i + 1) * w/100));
-const shades = (c, w) => Array.from({ length: 100 / w }, (_, i) => shade(c, (i + 1) * w/100));
+const tints = (c, w) => Array.from({ length: w }, (_, i) => tint(c, (i + 1)/w));
+const shades = (c, w) => Array.from({ length: w }, (_, i) => shade(c, (i )/w));
 
-const genPalette = (c, w=10) => [...tints(c, w).reverse(), Object.assign(c), ...shades(c, w).reverse()];
+const genPalette = (c, w=3) => [...tints(c, w).reverse(), Object.assign(c), ...shades(c, w).reverse()];
 
 
-const readline = require('readline');
-const rl = readline.createInterface({
-    input: process.stdin,
-    output: process.stdout,
-    terminal: false
+const fs = require("fs");
+
+fs.readFile("palette.in", "utf-8", (_, buf) => {
+    const colors = parseScheme(buf)
+    .map(e=> genPalette(e, process.env.PALETTE_SIZE).filter(v=>(v.r+v.g+v.b>0)&&(v.r+v.g+v.b<765)))
+
+    const hexstr = colors.map(cs=>cs.map(c=>rgbToHex(c)).join(',')).join(',')
+    const gifstr = colors.map(cs=>cs.map(c=>`${c.r} ${c.g} ${c.b}`).join('\n')).join('\n')
+
+    fs.writeFile("palette.out", hexstr, (err) => {
+        if (err) console.log(err);
+    });
+    fs.writeFile("gifpalette.out", gifstr, (err) => {
+        if (err) console.log(err);
     });
-
-rl.on('line', (line) => {
-    console.log(parseScheme(line).map(e=>genPalette(e).map(c=>rgbToHex(c))));
 });