how can i put sprite into PolygonComponent within the borders?

Question

pls help to put sprite inside the borders. The desired result on screen 2. What i have now on scr 1. Versions Flutter 3.3.1 Flame 1.3.0

      Future<void> onLoad() async {
        super.onLoad();
        size.setValues(cellSize, cellSize);
        //  anchor = Anchor.center;
        PolygonComponent cell = PolygonComponent.relative(
          [
            Vector2(0.0, -1.0),
            Vector2(-1.0, -0.5),
            Vector2(-1.0, 0.5),
            Vector2(0.0, 1.0),
            Vector2(1.0, 0.5),
            Vector2(1.0, -0.5),
          ],
          parentSize: size,
          //angle: 45,
    
          paint: Paint()
            ..color = Colors.white
            ..style = PaintingStyle.stroke
            ..strokeWidth = 1,
        );
        add(cell);
    
        SpriteComponent sprite = SpriteComponent()
          ..sprite = await Sprite.load('grass_1.png')
          ..size = Vector2(cellSize, cellSize);
    
        cell.add(sprite);
      }

screen

Answer 1

To do this you need to clip the part that is rendered in the SpriteComponent, this is done by extending the SpriteComponent and overriding its render method.

class MyClippedComponent extends SpriteComponent {
  ...
  
  @override
  void render(Canvas canvas) {
    canvas.clipPath(Your polygon as a path);
    super.render(canvas);
  }
}

In the next version of Flame there will be a component that does this for you by adding it as a parent to the component that you want to clip, it's called the ClipComponent.

The ClipComponent can be used today too if you add Flame as a git dependency and depend on the main branch.