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No commits in common. "main" and "feature-json-params" have entirely different histories.
main
...
feature-js
29
poptimal.js
29
poptimal.js
@ -12,13 +12,13 @@ const xmlns = "http://www.w3.org/2000/xmlns/";
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const xlinkns = "http://www.w3.org/1999/xlink";
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const svgns = "http://www.w3.org/2000/svg";
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import {RADIUS_OPTS, RADIUS_DESC, radius_func, DotMaker} from './src/components/dots.js';
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import {RADIUS_OPTS, RADIUS_DESC, DotMaker} from './src/components/dots.js';
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import {PALETTES} from './src/components/palettes.js';
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import {ColourNamer} from './src/components/colour_namer.js';
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const CELL = 10;
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const MAG = 2;
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const WIDTH = 200;
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const WIDTH = 20;
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const HEIGHT = WIDTH;
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// number of pixels which have to be visible for a colour to be
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// mentioned in the alt text
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@ -36,12 +36,10 @@ function randomise_params() {
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f: random.choice(RADIUS_OPTS),
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r: random.float(0, 0.4),
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}});
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const cell = 5 + random.float() * random.float() * 55;
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return {
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background: palette[0],
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palette: palette_name,
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patterns: patterns,
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cell: cell,
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patterns: patterns
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}
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}
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@ -136,34 +134,30 @@ function poptimal_svg(params) {
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const document = window.document;
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const container = d3.select(document.body).append("div");
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const width = WIDTH / params.cell;
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const height = WIDTH / params.cell;
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const dm = new DotMaker(width, height);
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const dm = new DotMaker(WIDTH);
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const svg = container.append("svg")
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.attr("width", WIDTH * MAG)
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.attr("height", HEIGHT * MAG)
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.attr("viewBox", [ 0, 0, width, height ]);
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.attr("width", WIDTH * CELL * MAG)
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.attr("height", HEIGHT * CELL * MAG)
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.attr("viewBox", [ 0, 0, WIDTH, HEIGHT ]);
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const background = svg.append("rect")
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.attr("x", 0)
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.attr("y", 0)
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.attr("width", width)
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.attr("height", height)
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.attr("width", WIDTH)
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.attr("height", WIDTH)
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.attr("fill", params.background);
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params.patterns.map((p) => {
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const dots = dm.dots(1 / p.m, p.n, false);
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const rfunc = radius_func(p.f);
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const dots_g = svg.append("g")
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.attr("id", `dots${p.i}`);
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dots_g.selectAll("circle")
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.data(dots)
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.join("circle")
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.attr("r", (d) => rfunc(d, p.r, width, height))
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.attr("r", (d) => dm.radius(d, p.f, p.r))
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.attr("fill", p.colour)
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.attr("cx", (d) => d.x)
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.attr("cy", (d) => d.y);
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@ -233,6 +227,7 @@ async function main() {
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const colourf = params.palette === 'grayscale' ? cf['grayscale'] : cf['colour'];
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const namer = new ColourNamer();
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console.log(`Loading colours ${colourf}`);
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await namer.load_colours(colourf);
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@ -255,7 +250,7 @@ async function main() {
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// so we don't include obscured colours
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const hist = await get_histogram(imgfile);
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const alt_text = image_description(namer, params, hist);
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params.alt_text = alt_text;
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await save_params(paramsfile, params);
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console.log(alt_text);
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console.log(imgfile);
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@ -11,11 +11,8 @@ const RADIUS_OPTS = [
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"right-down",
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"left-up",
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"left-down",
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"circle-in",
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"circle-out",
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"hyper-in",
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"hyper-out",
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"grid",
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"in",
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"out",
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"noise",
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];
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@ -29,19 +26,15 @@ const RADIUS_DESC = {
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"right-down": "getting larger towards the lower right",
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"left-up": "getting larger towards the upper left",
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"left-down": "getting larger towards the lower left",
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"circle-in": "forming a circle at the centre",
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"circle-out": "leaving a circular gap at the centre",
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"hyper-in": "forming a starlike pattern at the centre",
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"hyper-out": "leaving a starlike gap in the centre",
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"in": "getting larger in the centre",
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"out": "getting larger at the edges",
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"noise": "of random sizes",
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"grid": "forming a grid pattern",
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}
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function distance(dx, dy) {
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return Math.sqrt(dx ** 2 + dy ** 2);
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}
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function int_range(v1, v2) {
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const vs = [v1, v2];
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vs.sort((a, b) => a - b);
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@ -50,17 +43,11 @@ function int_range(v1, v2) {
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return [...Array(high - low + 1).keys()].map((i) => i + low);
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}
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function randint(min, max) {
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return min + Math.floor(Math.random() * (max + 1));
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}
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class DotMaker {
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constructor(width, height) {
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constructor(width) {
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this.width = width;
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this.height = height;
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this.wh = 0.5 * (width + height);
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this.cx = 0.5 * width;
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this.cy = 0.5 * height;
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this.cy = 0.5 * width;
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}
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dots(m, n, clip) {
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@ -68,61 +55,58 @@ class DotMaker {
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return [];
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}
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const ps = [];
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const is = int_range(-this.width, this.height / m)
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const is = int_range(-this.width, this.width / m)
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is.map((i) => {
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const js = int_range(m * i + (m - n) * this.width, m * i)
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js.map((j) => {
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const x = (j - m * i) / (m - n);
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const y = m * (x + i);
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if( !clip || (x > 0 && y > 0 && x < this.width && y < this.height) ) {
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if( !clip || (x > 0 && y > 0 && x < this.width && y < this.width) ) {
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ps.push({i:i, j:j, x:x, y:y});
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}
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});
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});
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return ps;
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}
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radius(d, func, maxr) {
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switch (func) {
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case "const":
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return maxr;
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case "right":
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return maxr * d.x / this.width;
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case "left":
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return maxr * (this.width - d.x) / this.width;
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case "down":
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return maxr * d.y / this.width;
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case "up":
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return maxr * (this.width - d.y) / this.width;
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case "right-up":
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return 0.5 * maxr * (d.x + this.width - d.y) / this.width;
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case "left-up":
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return 0.5 * maxr * (this.width - d.x + this.width - d.y) / this.width;
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case "right-down":
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return 0.5 * maxr * (d.x + d.y) / this.width;
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case "left-down":
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return 0.5 * maxr * (this.width - d.x + d.y) / this.width;
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case "out":
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return 2 * maxr * distance((d.x - this.cx), (d.y - this.cy)) / this.width;
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case "in":
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return 2 * maxr * (0.5 * this.width - distance((d.x - this.cx), (d.y - this.cy))) / this.width;
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// case "hyper-out":
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// return 2 * maxr * Math.abs(d.x - this.cx) (d.y - this.cy)) / this.width;
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// case "hyoer-in":
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// return 2 * maxr * (0.5 * this.width - distance((d.x - this.cx), (d.y - this.cy))) / this.width;
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case "noise":
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return maxr * Math.random();
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default:
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return maxr;
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}
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}
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}
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function radius_func(func) {
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switch (func) {
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case "const":
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return (d, r, w, h) => r;
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case "right":
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return (d, r, w, h) => r * d.x / w;
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case "left":
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return (d, r, w, h) => r * (w - d.x) / w;
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case "down":
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return (d, r, w, h) => r * d.y / h;
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case "up":
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return (d, r, w, h) => r * (h - d.y) / h;
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case "right-up":
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return (d, r, w, h) => r * (d.x + h - d.y) / (w + h);
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case "left-up":
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return (d, r, w, h) => r * (w - d.x + h - d.y) / (w + h);
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case "right-down":
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return (d, r, w, h) => r * (d.x + d.y) / (w + h);
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case "left-down":
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return (d, r, w, h) => r * (w - d.x + d.y) / (w + h);
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case "circle-out":
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return (d, r, w, h) => 4 * r * distance((d.x - w / 2), (d.y - h / 2)) / (w + h);
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case "circle-in":
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return (d, r, w, h) => 4 * r * (0.5 * (w + h) - distance((d.x - w / 2), (d.y - h / 2))) / (w + h);
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case "hyper-in":
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return (d, r, w, h) => 2 * r * (1 - Math.abs((d.x - w / 2) * (d.y - h / 2)) / (w + h));
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case "hyper-out":
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return (d, r, w, h) => 2 * r * Math.abs((d.x - w / 2) * (d.y - h / 2)) / (w + h);
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case "noise":
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return (d, r, w, h) => r * Math.random();
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case "grid":
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const xk = Math.PI * (2 * randint(1, 10) - 1);
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const yk = Math.PI * (2 * randint(1, 10) - 1);
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return (d, r, w, h) => r * (0.5 + 0.5 * (Math.sin(xk * d.x / w) + Math.sin(yk * d.y / h)));
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default:
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return (d, r, w, h) => r;
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}
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}
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export { RADIUS_OPTS, RADIUS_DESC, DotMaker, radius_func };
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export { RADIUS_OPTS, RADIUS_DESC, DotMaker };
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@ -73,7 +73,7 @@ export async function download_as_png (svg) {
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const opts = {
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fitTo: {
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mode: 'width', // If you need to change the size
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value: 1200,
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value: 400,
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}
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};
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const resvgJS = new resvg.Resvg(svgstr, opts)
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80
src/index.md
80
src/index.md
@ -8,15 +8,15 @@ toc: false
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colourful generative patterns using [d3](https://d3js.org/) and [Observable Framework](https://observablehq.com/framework/)
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<p>v1.2.2 | by <a href="https://mikelynch.org">mike lynch</a> | <a href="https://aus.social/@mikelynch">@mikelynch@aus.social</a> | <a href="https://git.tilde.town/bombinans/poptimal">source</a> | <a href="https://mikelynch.org/2025/Mar/09/poptimal/">about</a></p>
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<p>v1.1.1 | by <a href="https://mikelynch.org">mike lynch</a> | <a href="https://aus.social/@mikelynch">@mikelynch@aus.social</a> | <a href="https://git.tilde.town/bombinans/poptimal">source</a></p>
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<div class="grid grid-cols-3">
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<div class="grid grid-cols-2">
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<div class="card grid-colspan-1">
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<div class="card">
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```js
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import {RADIUS_OPTS, DotMaker, radius_func} from './components/dots.js';
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import {RADIUS_OPTS, DotMaker} from './components/dots.js';
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import {DotControls} from './components/controls.js';
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import {PALETTES} from './components/palettes.js';
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import {download, download_as_svg, download_as_png} from './components/download.js';
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@ -24,26 +24,18 @@ import random from "npm:random";
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import * as resvg from 'npm:@resvg/resvg-wasm';
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const CELL = 10;
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const MAG = 2;
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const WIDTH = 200;
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const HEIGHT = 200;
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const WIDTH = 20;
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const HEIGHT = WIDTH;
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const cell_input = Inputs.range([5,60], {value: 10, label: "cell size"});
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const cell = view(cell_input);
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const dm = new DotMaker(WIDTH);
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```
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```js
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const bg_input = Inputs.color({
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label: "background", value: d3.color("white").formatHex()
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});
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const bg_input = Inputs.color({label: "background", value: d3.color("yellow").formatHex()});
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const bg = view(bg_input);
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const ctrl1 = new DotControls(d3.color("white").formatHex(), RADIUS_OPTS);
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const ctrl2 = new DotControls(d3.color("white").formatHex(), RADIUS_OPTS);
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const ctrl1 = new DotControls(d3.color("red").formatHex(), RADIUS_OPTS);
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const ctrl2 = new DotControls(d3.color("blue").formatHex(), RADIUS_OPTS);
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const fg1 = view(ctrl1.fg);
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@ -95,8 +87,6 @@ ctrl1.null_grid();
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ctrl2.null_grid();
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palette_input.value = PALETTES.get(rpalette);
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palette_input.dispatchEvent(new Event("input"));
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cell_input.value = 5 + random.float() * random.float() * 55;
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cell_input.dispatchEvent(new Event("input"));
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ctrl1.random_grid();
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ctrl2.random_grid();
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@ -123,26 +113,14 @@ if( palette_fn ) {
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```
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</div>
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<div class="card grid-colspan-2">
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<div>
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```js
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const width = WIDTH / cell;
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const height = HEIGHT / cell;
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const dots1 = dm.dots(1 / m1, n1, true);
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const dots2 = dm.dots(1 / m2, n2, true);
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const dm = new DotMaker(width, height);
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const dots1 = dm.dots(1 / m1, n1, false);
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const dots2 = dm.dots(1 / m2, n2, false);
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```
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```js
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const rfunc1 = radius_func(f1);
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const rfunc2 = radius_func(f2);
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```
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@ -151,18 +129,9 @@ const rfunc2 = radius_func(f2);
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const svg = d3.create("svg")
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.attr("width", WIDTH * MAG)
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.attr("height", HEIGHT * MAG)
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.attr("viewBox", [ 0, 0, width, height ]);
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svg.append("clipPath")
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.attr("id", "clipRect")
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.append("rect")
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.attr("x", 0)
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.attr("y", 0)
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.attr("width", width)
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.attr("height", height);
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.attr("width", WIDTH * CELL * MAG)
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.attr("height", HEIGHT * CELL * MAG)
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.attr("viewBox", [ 0, 0, WIDTH, HEIGHT ]);
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// re transitions: they should only run when updating the palette and
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@ -182,15 +151,14 @@ bg_g.selectAll("rect")
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.join("rect")
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.attr("x", 0)
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.attr("y", 0)
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.attr("width", width)
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.attr("height", height)
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.attr("width", WIDTH)
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.attr("height", WIDTH)
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.attr("fill", (d) => d.bg)
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;
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const dots_g1 = svg.append("g")
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.attr("id", "dots1")
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.attr("clip-path", "url(#clipRect)");
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.attr("id", "dots1");
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dots_g1.selectAll("circle")
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.data(dots1)
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@ -200,8 +168,7 @@ dots_g1.selectAll("circle")
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.attr("fill", fg1);
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const dots_g2 = svg.append("g")
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.attr("id", "dots2")
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.attr("clip-path", "url(#clipRect)");
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.attr("id", "dots2");
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dots_g2.selectAll("circle")
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.data(dots2)
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@ -217,8 +184,8 @@ display(svg.node());
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```js
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// separate code block for when I understand transitions better
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dots_g1.selectAll("circle").attr("r", (d) => rfunc1(d, r1, width, height));
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dots_g2.selectAll("circle").attr("r", (d) => rfunc2(d, r2, width, height));
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dots_g1.selectAll("circle").attr("r", (d) => dm.radius(d, f1, r1));
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dots_g2.selectAll("circle").attr("r", (d) => dm.radius(d, f2, r2));
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```
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@ -244,7 +211,6 @@ display(download(() => {
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```
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(PNGs made with <a href="https://github.com/thx/resvg-js">resvg-wasm</a> in-browser)
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</div>
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</div>
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<style>
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Loading…
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Reference in New Issue
Block a user