canvacard/libs/Convolute.js

Powerful image manipulation package for beginners.

const Canvas = require("@napi-rs/canvas");
const convolute = require("../plugins/convolute");

module.exports = async (img, matrix, opaque, lvl) => {
  if (isNaN(lvl)) lvl = 1;
  const image = await Canvas.loadImage(img);
  const canvas = Canvas.createCanvas(image.width, image.height);
  const ctx = canvas.getContext("2d");
  ctx.drawImage(image, 0, 0);

  for (let i = 0; i < lvl; i++) {
    convolute(ctx, canvas, matrix, opaque);
  }

  return canvas.toBuffer("image/png");
};