bombinans/poptimal
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Now describes the directions of the gradients

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This commit is contained in:
Mike Lynch 2025-03-23 17:33:04 +11:00
parent cbfcb53a8c
commit 03c87f21de
2 changed files with 55 additions and 31 deletions
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69
poptimal.js
View File

@ -11,13 +11,14 @@ const xmlns = "http://www.w3.org/2000/xmlns/";
const xlinkns = "http://www.w3.org/1999/xlink";
const svgns = "http://www.w3.org/2000/svg";
import {RADIUS_OPTS, DotMaker} from './src/components/dots.js';
import {RADIUS_OPTS, RADIUS_DESC, DotMaker} from './src/components/dots.js';
import {PALETTES, ColourNamer} from './src/components/palettes.js';
const CELL = 10;
const MAG = 2;
const WIDTH = 20;
const HEIGHT = WIDTH;
const VISIBLE_DOG = 1000;
function randomise_params() {
const palette_name = random.choice(Array.from(PALETTES.keys()));
@ -52,29 +53,54 @@ async function get_histogram(imgfile) {
function parse_histogram(convert_out) {
const colour_re = /(\d+): \(\d+,\d+,\d+,\d+\) #([A-F0-9]+) /;
const colour_re = /(\d+): \(\d+,\d+,\d+,\d+\) (#[A-F0-9]+) /;
const colours = new Map();
convert_out.split("\n").forEach((l) => {
const m = l.match(colour_re);
if( m ) {
console.log(m[1], m[2]);
const colour = m[2].substring(0, 6);
const colour = m[2].substring(0, 7);
colours.set(colour, Number(m[1]));
} else {
console.log(`no match ${l}`);
}
});
return new Map([...colours].sort((a, b) => b[1] - a[1]));
}
function colour_visible(hist, colour) {
const hexcolour = colour.formatHex().toUpperCase();
console.log(colour, hexcolour, hist.get(hexcolour));
return hist.get(hexcolour) > VISIBLE_DOG;
}
function image_description(namer, params) {
const bgc = namer.colour_to_text(params.background);
const dotc = params.patterns.map((p) => namer.colour_to_text(p.colour));
const a = bgc.match(/^[aeiou]/) ? 'an' : 'a';
return `A pattern of ${dotc[0]} and ${dotc[1]} dots on ${a} ${bgc} background`;
function image_description(namer, params, histogram) {
const colours = [
params.background,
params.patterns[0].colour,
params.patterns[1].colour,
];
const i_vis = [0, 1, 2].filter((i) => colour_visible(histogram, colours[i]));
const named_colours = i_vis.map((i) => namer.colour_to_text(colours[i]));
const gradients = i_vis.map((i) => {
if( i > 0 ) {
return RADIUS_DESC[params.patterns[i - 1].f];
} else {
return '';
}
});
if( named_colours.length == 1 ) {
return `A solid field of ${named_colours[0]}`;
}
if( named_colours.length > 1 ) {
const bgc = named_colours[0];
const a = bgc.match(/^[aeiou]/) ? 'an' : 'a';
const dot_desc = named_colours.slice(1);
const gs = gradients.slice(1);
const pattern_desc = dot_desc.map((d, i) => `${d} dots ${gs[i]}`);
const patterns = pattern_desc.join(' and ');
return `A pattern of ${patterns} on ${a} ${bgc} background`;
}
return "";
}
@ -154,21 +180,6 @@ async function post_image(image, alt_text, cf) {
}
function survey_pixels(pngData) {
const pixbuf = pngData.pixels;
const pixels = Array.from(pixbuf);
const colours = {};
for( let i = 0; i += 3; i < pixels.length ) {
const hex = `${pixels[i]},${pixels[i + 1]},${pixels[i + 2]}`;
if( ! hex in colours ) {
colours[hex] = 0;
}
colours[hex]++;
}
console.log(colours);
}
async function main() {
const argv = yargs(hideBin(process.argv))
@ -186,7 +197,6 @@ async function main() {
const imgfile = cf['working_dir'] + '/' + fn;
const params = randomise_params();
console.log(params.palette);
const colourf = params.palette === 'grayscale' ? cf['grayscale'] : cf['colour'];
const namer = new ColourNamer();
@ -212,11 +222,10 @@ async function main() {
// generate the alt_text last to check the image file histogram
// so we don't include obscured colours
const hist = await get_histogram(imgfile);
console.log(hist);
const alt_text = image_description(namer, params, imgfile);
const alt_text = image_description(namer, params, hist);
console.log(imgfile);
console.log(alt_text);
console.log(imgfile);
if( cf['base_url'] ) {
await post_image(imgfile, alt_text, cf);
}

17
src/components/dots.js
View File

@ -16,6 +16,21 @@ const RADIUS_OPTS = [
"noise",
];
const RADIUS_DESC = {
"const": "of constant size",
"right": "getting larger towards the left",
"left": "getting larger towards the left",
"up": "getting larger towards the top",
"down": "getting larger towards the bottom",
"right-up": "getting larger towards the upper right",
"right-down": "getting larger towards the lower right",
"left-up": "getting larger towards the upper left",
"left-down": "getting larger towards the lower left",
"in": "getting larger in the centre",
"out": "getting larger at the edges",
"noise": "of random sizes",
}
function distance(dx, dy) {
return Math.sqrt(dx ** 2 + dy ** 2);
}
@ -92,6 +107,6 @@ class DotMaker {
}
}
export { RADIUS_OPTS, DotMaker };
export { RADIUS_OPTS, RADIUS_DESC, DotMaker };