image-js/lib/image/compute/min.js

Image processing and manipulation in JavaScript

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = min;
var _newArray = _interopRequireDefault(require("new-array"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
 * Returns an array with the minimal value of each channel
 * @memberof Image
 * @instance
 * @return {number[]} Array having has size the number of channels
 */
function min() {
  this.checkProcessable('min', {
    bitDepth: [8, 16, 32]
  });
  let result = (0, _newArray.default)(this.channels, +Infinity);
  for (let i = 0; i < this.data.length; i += this.channels) {
    for (let c = 0; c < this.channels; c++) {
      if (this.data[i + c] < result[c]) {
        result[c] = this.data[i + c];
      }
    }
  }
  return result;
}