Segment query first, sometimes failing

[DwiYI]

Can anyone help me, why this happen ?.
I am following example from query demo but cpSpaceSegmentQueryFirst sometimes failing.

What kind of possible problem has this caused?

[aismann]

It works here

[DwiYI]

That's right, the demo is working fine. but not on my code. I don't know how to do debug that because example working fine. Do you know possible cause of that ?. its binding

[aismann]

Look at your code ;)

[DwiYI]

this is dart binding

late SegmentQueryInfo info;
(Shape shape, SegmentQueryInfo info) segmentQueryFirst({required Vector2 start, required Vector2 end, required double radius, required ShapeFilter filter}) {
  var sh = _bindings.cpSpaceSegmentQueryFirst(_space, start.toCpVect().ref, end.toCpVect().ref, radius, filter._toPointer().ref, 
           info._segmentQueryInfo);
  return (Shape._fromPointer(sh), info);
}

this is query code

 widget.game.physicUpdateAfter = (p0) {
      var (lq.Shape shape, lq.SegmentQueryInfo info) = widget.game.space.segmentQueryFirst(start: start, end: end, radius: 10, filter: shapeFilterAll);
      if (shape.isExist) {
        poi = info.point;
        nor = info.normal;
        alp = info.alpha;
        lineDraw1 = true;
        desc = 'Segment Query: Dist(${alp * (end - start).length}) Normal(${nor.x}, ${nor.y})';
      } else {
        lineDraw1 = false;
        alp = 1;
        desc = 'Segment Query (None)';
      }
    };

[aismann]

work this correct : shape.isExist ?

[DwiYI]

thats, only check against null,

[aismann]

add some debug outputs on your code.
Hope this is helping you.

[aismann]

thats, only check against null,

Thats seems not correct ;) the object isn't null
check all input parameters:

[DwiYI]

Thank you for your suggestion. The problem come from filter parameter. My code sending garbage value. I will close this.