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Filename : index.js
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"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _utils = require("@jimp/utils");

/**
 * Creates a circle out of an image.
 * @param {function(Error, Jimp)} options (optional) radius, x, y
 * @param {function(Error, Jimp)} cb (optional) a callback for when complete
 * @returns {Jimp} this for chaining of methods
 */
var _default = function _default() {
  return {
    circle: function circle() {
      var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
      var cb = arguments.length > 1 ? arguments[1] : undefined;

      if (typeof options === "function") {
        cb = options;
        options = {};
      }

      var radius = options.radius || (this.bitmap.width > this.bitmap.height ? this.bitmap.height : this.bitmap.width) / 2;
      var center = {
        x: typeof options.x === "number" ? options.x : this.bitmap.width / 2,
        y: typeof options.y === "number" ? options.y : this.bitmap.height / 2
      };
      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        var curR = Math.sqrt(Math.pow(x - center.x, 2) + Math.pow(y - center.y, 2));

        if (radius - curR <= 0.0) {
          this.bitmap.data[idx + 3] = 0;
        } else if (radius - curR < 1.0) {
          this.bitmap.data[idx + 3] = 255 * (radius - curR);
        }
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    }
  };
};

exports["default"] = _default;
module.exports = exports.default;
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