add method

void add(Image image, Vector2 position, { Rect? source, double angle = 0, Vector2? anchor, bool? isAntiAlias, BlendMode? blendMode, })

Add an image to the ImageComposition.

The image will be added at the given position on the composition.

An optional source can be used to only add the data that is within the source of the image.

An optional angle (in radians) can be used to rotate the image when it gets added to the composition. It will be rotated in a clock-wise direction around the anchor.

By default the anchor will be the source.width and source.height divided by 2.

isAntiAlias can be used to if the image will be anti aliased. Defaults to defaultAntiAlias.

The blendMode can be used to change how the image will be blended onto the composition. Defaults to defaultBlendMode.

Implementation

void add(
  Image image,
  Vector2 position, {
  Rect? source,
  double angle = 0,
  Vector2? anchor,
  bool? isAntiAlias,
  BlendMode? blendMode,
}) {
  final imageRect = image.getBoundingRect();
  source ??= imageRect;
  anchor ??= source.toVector2() / 2;
  blendMode ??= defaultBlendMode;
  isAntiAlias ??= defaultAntiAlias;

  assert(
    imageRect.topLeft <= source.topLeft &&
        imageRect.bottomRight >= source.bottomRight,
    'Source rect should fit within the image',
  );

  _composes.add(
    _Fragment(
      image,
      position,
      source,
      angle,
      anchor,
      blendMode,
      antiAlias: isAntiAlias,
    ),
  );
}