import 'package:diff_image/diff_image.dart';
import 'package:image/image.dart';

final FIRST_IMAGE = 'https://raw.githubusercontent.com/nicolashahn/diffimg/master/images/mario-circle-cs.png';
final SECOND_IMAGE = 'https://raw.githubusercontent.com/nicolashahn/diffimg/master/images/mario-circle-node.png';

void foo() async {
  try {
      var diff = await DiffImage.compareFromUrl(
        FIRST_IMAGE,
        SECOND_IMAGE,
      );
      print('The difference between images is: ${diff.value} %');
  } catch(e) {
      print(e);
  }
}

void goo(Image first, Image second) {
  try {
    var diff = DiffImage.compareFromMemory(
      first,
      second,
    );
    print('The difference between images is: ${diff.diffValue} %');
  } catch(e) {
    print(e);
  }
}

main() {
  foo();
  /*These can be obtained with any method*/
  Image first;
  Image second;
  // Here is posible to manipulate both images before passing them
  // to the function.
  goo(first, second);
}

  static Future<DiffImgResult> compareFromUrl(
    dynamic firstImgSrc,
    dynamic secondImgSrc, {
    bool asPercentage = true,
    bool ignoreAlpha = true,
  }) async{...}

  static DiffImgResult compareFromMemory(
    Image firstImg,
    Image secondImg, {
    bool asPercentage = true,
    bool ignoreAlpha = true,
  }) {...}