yeet

node_modules/@jimp/plugin-fisheye/src/index.js

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+import { isNodePattern } from '@jimp/utils';
+
+/**
+ * Creates a circle out of an image.
+ * @param {object} options (optional) r: radius of effect
+ * @param {function(Error, Jimp)} cb (optional) a callback for when complete
+ * @returns {Jimp} this for chaining of methods
+ */
+export default () => ({
+  fisheye(options = { r: 2.5 }, cb) {
+    if (typeof options === 'function') {
+      cb = options;
+      options = { r: 2.5 };
+    }
+
+    const source = this.cloneQuiet();
+    const { width, height } = source.bitmap;
+
+    source.scanQuiet(0, 0, width, height, (x, y) => {
+      const hx = x / width;
+      const hy = y / height;
+      const r = Math.sqrt(Math.pow(hx - 0.5, 2) + Math.pow(hy - 0.5, 2));
+      const rn = 2 * Math.pow(r, options.r);
+      const cosA = (hx - 0.5) / r;
+      const sinA = (hy - 0.5) / r;
+      const newX = Math.round((rn * cosA + 0.5) * width);
+      const newY = Math.round((rn * sinA + 0.5) * height);
+      const color = source.getPixelColor(newX, newY);
+
+      this.setPixelColor(color, x, y);
+    });
+
+    /* Set center pixel color, otherwise it will be transparent */
+    this.setPixelColor(
+      source.getPixelColor(width / 2, height / 2),
+      width / 2,
+      height / 2
+    );
+
+    if (isNodePattern(cb)) {
+      cb.call(this, null, this);
+    }
+
+    return this;
+  }
+});