Method fromBitmap

packages/core/src/index.ts:286–324

* Create a Jimp instance from a bitmap. * The difference between this and just using the constructor is that this will * convert raw image data into the bitmap format that Jimp uses. * * @example * ```ts * import { Jimp } from "jimp"; * * const image = Jimp.fr

(bitmap: RawImageData)

     * ```
     */
    static fromBitmap(bitmap: RawImageData) {
      let data: Buffer | undefined;

      if (bitmap.data instanceof Buffer) {
        data = Buffer.from(bitmap.data);
      }

      if (
        bitmap.data instanceof Uint8Array ||
        bitmap.data instanceof Uint8ClampedArray
      ) {
        data = Buffer.from(bitmap.data.buffer);
      }

      if (Array.isArray(bitmap.data)) {
        data = Buffer.concat(
          bitmap.data.map((hex) =>
            Buffer.from(hex.toString(16).padStart(8, "0"), "hex")
          )
        );
      }

      if (!data) {
        throw new Error("data must be a Buffer");
      }

      if (
        typeof bitmap.height !== "number" ||
        typeof bitmap.width !== "number"
      ) {
        throw new Error("bitmap must have width and height");
      }

      return new CustomJimp({
        height: bitmap.height,
        width: bitmap.width,
        data,
      }) as InstanceType<typeof CustomJimp> & ExtraMethodMap;
    }

    /**
     * Parse a bitmap with the loaded image types.