84 lines
2.2 KiB
JavaScript
84 lines
2.2 KiB
JavaScript
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const fs = require("fs");
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const path = require("path");
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const { createCanvas, loadImage } = require("canvas");
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const basePath = process.cwd();
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const buildDir = `${basePath}/build/pixel_images`;
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const inputDir = `${basePath}/build/images`;
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const { format, pixelFormat } = require(`${basePath}/src/config.js`);
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const console = require("console");
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const canvas = createCanvas(format.width, format.height);
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const ctx = canvas.getContext("2d");
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const buildSetup = () => {
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if (fs.existsSync(buildDir)) {
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fs.rmdirSync(buildDir, { recursive: true });
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}
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fs.mkdirSync(buildDir);
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};
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const getImages = (_dir) => {
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try {
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return fs
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.readdirSync(_dir)
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.filter((item) => {
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let extension = path.extname(`${_dir}${item}`);
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if (extension == ".png" || extension == ".jpg") {
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return item;
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}
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})
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.map((i) => {
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return {
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filename: i,
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path: `${_dir}/${i}`,
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};
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});
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} catch {
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return null;
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}
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};
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const loadImgData = async (_imgObject) => {
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return new Promise(async (resolve) => {
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const image = await loadImage(`${_imgObject.path}`);
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resolve({ imgObject: _imgObject, loadedImage: image });
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});
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};
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const draw = (_imgObject) => {
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let size = pixelFormat.ratio;
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let w = canvas.width * size;
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let h = canvas.height * size;
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ctx.imageSmoothingEnabled = false;
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ctx.drawImage(_imgObject.loadedImage, 0, 0, w, h);
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ctx.drawImage(canvas, 0, 0, w, h, 0, 0, canvas.width, canvas.height);
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};
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const saveImage = (_loadedImageObject) => {
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fs.writeFileSync(
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`${buildDir}/${_loadedImageObject.imgObject.filename}`,
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canvas.toBuffer("image/png")
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);
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};
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const startCreating = async () => {
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const images = getImages(inputDir);
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if (images == null) {
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console.log("Please generate collection first.");
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return;
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}
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let loadedImageObjects = [];
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images.forEach((imgObject) => {
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loadedImageObjects.push(loadImgData(imgObject));
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});
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await Promise.all(loadedImageObjects).then((loadedImageObjectArray) => {
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loadedImageObjectArray.forEach((loadedImageObject) => {
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draw(loadedImageObject);
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saveImage(loadedImageObject);
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console.log(`Pixelated image: ${loadedImageObject.imgObject.filename}`);
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});
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});
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};
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buildSetup();
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startCreating();
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