Initial commit

node_modules/@jimp/plugin-circle/src/index.ts

@@ -0,0 +1,56 @@
+import { JimpClass } from "@jimp/types";
+import { z } from "zod";
+
+const CircleOptionsSchema = z.object({
+  /** the x position to draw the circle */
+  x: z.number().optional(),
+  /** the y position to draw the circle */
+  y: z.number().optional(),
+  /** the radius of the circle */
+  radius: z.number().min(0).optional(),
+});
+
+export type CircleOptions = z.infer<typeof CircleOptionsSchema>;
+
+export const methods = {
+  /**
+   * Creates a circle out of an image.
+   * @example
+   * ```ts
+   * import { Jimp } from "jimp";
+   *
+   * const image = await Jimp.read("test/image.png");
+   *
+   * image.circle();
+   * // or
+   * image.circle({ radius: 50, x: 25, y: 25 });
+   * ```
+   */
+  circle<I extends JimpClass>(image: I, options: CircleOptions = {}) {
+    const parsed = CircleOptionsSchema.parse(options);
+    const radius =
+      parsed.radius ||
+      (image.bitmap.width > image.bitmap.height
+        ? image.bitmap.height
+        : image.bitmap.width) / 2;
+
+    const center = {
+      x: typeof parsed.x === "number" ? parsed.x : image.bitmap.width / 2,
+      y: typeof parsed.y === "number" ? parsed.y : image.bitmap.height / 2,
+    };
+
+    image.scan((x, y, idx) => {
+      const curR = Math.sqrt(
+        Math.pow(x - center.x, 2) + Math.pow(y - center.y, 2),
+      );
+
+      if (radius - curR <= 0.0) {
+        image.bitmap.data[idx + 3] = 0;
+      } else if (radius - curR < 1.0) {
+        image.bitmap.data[idx + 3] = 255 * (radius - curR);
+      }
+    });
+
+    return image;
+  },
+};