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https://github.com/sbrl/Minetest-WorldEditAdditions.git
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Add img2brush tool to website
Pending insertion of a link into the reference docs
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parent
ef2dbc1806
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4 changed files with 159 additions and 1 deletions
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@ -75,7 +75,7 @@ async function fetch(url) {
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}
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module.exports = function(eleventyConfig) {
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eleventyConfig.addPassthroughCopy("img2brush/img2brush.js");
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eleventyConfig.addAsyncShortcode("fetch", fetch);
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// eleventyConfig.addPassthroughCopy("images");
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@ -411,3 +411,30 @@ footer {
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flex-direction: column;
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align-items: center;
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}
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@keyframes move-diagonal {
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from {
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background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
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}
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to {
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background-position: -52px -52px, -52px -52px, -51px -51px, -51px -51px;
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}
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}
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#dropzone {
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border: 0.3em dashed #aaaaaa;
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transition: border 0.2s;
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justify-content: flex-start;
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}
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#dropzone.dropzone-active {
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border: 0.3em dashed hsl(203, 79%, 55%);
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/* Ref https://www.magicpattern.design/tools/css-backgrounds */
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background-image: linear-gradient(var(--bg-bright) 2px, transparent 2px), linear-gradient(90deg, var(--bg-bright) 2px, transparent 2px), linear-gradient(var(--bg-bright) 1px, transparent 1px), linear-gradient(90deg, var(--bg-bright) 1px, var(--bg-transcluscent) 1px);
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background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
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background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
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animation: move-diagonal 5s linear infinite;
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}
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#brushimg-preview { flex: 1; }
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97
.docs/img2brush/img2brush.js
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97
.docs/img2brush/img2brush.js
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@ -0,0 +1,97 @@
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window.addEventListener("load", () => {
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let dropzone = document.querySelector("#dropzone");
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dropzone.addEventListener("dragenter", handle_drag_enter);
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dropzone.addEventListener("dragleave", handle_drag_leave);
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dropzone.addEventListener("dragover", handle_drag_over);
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dropzone.addEventListener("drop", handle_drop);
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document.querySelector("#brushimg-tsv").addEventListener("click", select_output);
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let button_copy = document.querySelector("#brushimg-copy")
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button_copy.addEventListener("click", () => {
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select_output();
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button_copy.innerHTML = document.execCommand("copy") ? "Copied!" : "Failed to copy :-(";
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})
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});
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function select_output() {
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let output = document.querySelector("#brushimg-tsv");
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let selection = window.getSelection();
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if (selection.rangeCount > 0)
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selection.removeAllRanges();
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let range = document.createRange();
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range.selectNode(output);
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selection.addRange(range);
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}
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function handle_drag_enter(event) {
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event.target.classList.add("dropzone-active");
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}
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function handle_drag_leave(event) {
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event.target.classList.remove("dropzone-active");
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}
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function handle_drag_over(event) {
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event.preventDefault();
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}
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function handle_drop(event) {
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event.stopPropagation();
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event.preventDefault();
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event.target.classList.remove("dropzone-active");
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let image_file = null;
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image_file = event.dataTransfer.files[0];
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let reader = new FileReader();
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reader.addEventListener("load", function(_event) {
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let image = new Image();
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image.src = reader.result;
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image.addEventListener("load", () => handle_new_image(image));
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document.querySelector("#brushimg-preview").src = image.src;
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});
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reader.readAsDataURL(image_file);
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return false;
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}
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function image2pixels(image) {
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let canvas = document.createElement("canvas"),
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ctx = canvas.getContext("2d");
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canvas.width = image.width;
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canvas.height = image.height;
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ctx.drawImage(image, 0, 0);
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return ctx.getImageData(0, 0, image.width, image.height);
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}
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function handle_new_image(image) {
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let tsv = pixels2tsv(image2pixels(image));
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document.querySelector("#brushimg-stats").value = `${image.width} x ${image.height} | ${image.width * image.height} pixels`;
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document.querySelector("#brushimg-tsv").value = tsv;
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}
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function round(number, decimal_places = 0) {
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let multiplier = Math.pow(10, decimal_places);
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return Math.round(number * multiplier) / multiplier;
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}
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function pixels2tsv(pixels) {
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let result = "";
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for(let y = 0; y < pixels.height; y++) {
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let row = [];
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for(let x = 0; x < pixels.width; x++) {
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row.push(round(pixels.data[((y*pixels.width + x) * 4) + 3], 3));
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}
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result += row.join(`\t`) + `\n`;
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}
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return result;
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}
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34
.docs/img2brush/index.html
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34
.docs/img2brush/index.html
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@ -0,0 +1,34 @@
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---
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layout: theme.njk
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title: Image to brush converter
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---
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<section class="panel-generic">
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<h1>Image to sculpting brush converter</h1>
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<p>Convert any image to a sculpting brush here! The <strong>alpha (opacity) channel</strong> is used to determine the weight of the brush - <strong>all colour is ignored</strong>.</p>
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</section>
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<section id="dropzone" class="bigbox panel-generic">
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<h2>Input</h2>
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<p>Drop your image here.</p>
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<img id="brushimg-preview" alt="" />
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<output id="brushimg-stats"></output>
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</section>
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<section class="panel-generic">
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<h2>Output</h2>
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<p>Paste the output below into a text file in <code>worldeditadditions/lib/sculpt/brushes</code> with the file extension <code>.txt</code> and restart your Minetest server for the brush to be recognised.</p>
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<p class="text-centre">
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<button id="brushimg-copy" class="bigbutton">Copy</button>
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</p>
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<pre><output id="brushimg-tsv"><em>(your output will appear here as soon as you drop an image above)</em></output></pre>
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</section>
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<script src="./img2brush.js"></script>
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