161 lines
4.4 KiB
HTML
161 lines
4.4 KiB
HTML
<article>
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<script type="text/javascript">
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var ns = "http://www.w3.org/2000/svg";
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var margin = 5;
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var max_aspect_ratio = 3;
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$(document).ready(function() { clear(document.getElementById('svg')); });
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var ns = "http://www.w3.org/2000/svg";
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var margin = 5;
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var max_aspect_ratio = 3;
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clear(document.getElementById('svg'));
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function clear(panel) {
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while (panel.children.length > 0) {
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panel.children[0].remove();
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}
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panel.appendChild(new_rect(50, 50, 400, 600));
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}
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function generate() {
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var svg = document.getElementById('svg');
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clear(svg);
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while (svg.children.length < document.getElementById('complexity').value) {
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mutate(choose(svg.children));
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}
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}
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function mutate(panel) {
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choose(split_types(panel))(panel);
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}
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function split_types(panel) {
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var splits = [];
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var aspect_ratio = get_aspect_ratio(panel);
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if (aspect_ratio < 5) {
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splits.push(split_vertical);
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splits.push(split_vertical);
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splits.push(split_vertical);
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splits.push(multisplit_vertical);
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}
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if (aspect_ratio > 0.2) {
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splits.push(split_horizontal);
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splits.push(split_horizontal);
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splits.push(split_horizontal);
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splits.push(multisplit_horizontal);
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}
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return splits;
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}
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function multisplit_vertical(panel) {
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var x = parseFloat(panel.getAttribute('x'));
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var y = parseFloat(panel.getAttribute('y'));
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var width = parseFloat(panel.getAttribute('width'));
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var height = parseFloat(panel.getAttribute('height'));
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var n = choose([2,2,3,3,3,4]);
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var results = [];
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var step = (height + (1-n)*2*margin) / n;
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for (var i=0; i<n; i++) {
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var child = new_rect(x, y + i*(step + 2*margin), width, step);
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panel.parentElement.appendChild(child);
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results.push(child);
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}
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panel.remove();
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return results;
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}
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function split_vertical(panel) {
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var x = parseFloat(panel.getAttribute('x'));
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var y = parseFloat(panel.getAttribute('y'));
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var width = parseFloat(panel.getAttribute('width'));
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var height = parseFloat(panel.getAttribute('height'));
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var distance = Math.random()*(height - 2*margin);
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var child_one = new_rect(x, y, width, distance - margin);
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var child_two = new_rect(x, y + distance + margin,
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width, height - distance - margin);
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panel.parentElement.appendChild(child_one);
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panel.parentElement.appendChild(child_two);
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panel.remove();
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return [child_one, child_two];
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}
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function multisplit_horizontal(panel) {
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var x = parseFloat(panel.getAttribute('x'));
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var y = parseFloat(panel.getAttribute('y'));
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var width = parseFloat(panel.getAttribute('width'));
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var height = parseFloat(panel.getAttribute('height'));
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var n = choose([2,2,3,3,3,4]);
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var results = [];
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var step = (width + (1-n)*2*margin) / n;
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for (var i=0; i<n; i++) {
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var child = new_rect(x + i*(step + 2*margin), y, step, height);
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panel.parentElement.appendChild(child);
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results.push(child);
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}
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panel.remove();
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return results;
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}
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function split_horizontal(panel) {
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var x = parseFloat(panel.getAttribute('x'));
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var y = parseFloat(panel.getAttribute('y'));
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var width = parseFloat(panel.getAttribute('width'));
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var height = parseFloat(panel.getAttribute('height'));
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var distance = Math.random()*(width - 2*margin) + margin;
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var child_one = new_rect(x, y, distance - margin, height);
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var child_two = new_rect(x + distance + margin, y,
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width - distance - margin, height);
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panel.parentElement.appendChild(child_one);
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panel.parentElement.appendChild(child_two);
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panel.remove();
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return [child_one, child_two];
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}
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function new_rect(x, y, width, height) {
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var rect = document.createElementNS(ns, 'rect');
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rect.setAttribute("x", x);
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rect.setAttribute("y", y);
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rect.setAttribute("width", width);
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rect.setAttribute("height", height);
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return rect;
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}
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function get_aspect_ratio(p) {return parseFloat(p.getAttribute('width')) / parseFloat(p.getAttribute('height'));}
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function choose(o) {return o[Math.floor(Math.random() * o.length)];}
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</script>
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<p>Here, have a thing that generates layouts for comic pages! It's very rough, and silly.<p>
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<label for="complexity">Number of panels:</label><input type="number" id="complexity" value="5"/>
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<button onclick="generate()">generate the thing!</button>
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<svg id="svg" style="stroke-width:2px; stroke:black; fill:none; display:block;"
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width="50%"
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viewBox="0 0 500 700"
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preserveAspectRatio="meet"
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version="1.1"
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xmlns="http://www.w3.org/2000/svg"
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xmlns:xlink="http://www.w3.org/1999/xlink" />
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</article>
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