Ray2D missing target position

Hello, im trying to make shadow casting, it already work but problem is that the ray casted to corner of wall sometimes missing. Here is picture how it look like:

Ok i try to explain it better... I find all walls in range and i create Ray2D to all finded corners of this objects (White lines). When Ray.point is on same position (+- some deviation) like original position of corner, i save this position to List<Vector3> and draw a red Line to it (for visualization). From this List i create mesh.

Here is important part of code:

Code (CSharp):

1. private void MultiRays(BoxCollider2D bc)
2.     {
3.         RayCaster(new Vector3(bc.bounds.center.x + bc.bounds.extents.x, bc.bounds.center.y + bc.bounds.extents.y, 0));
4.         RayCaster(new Vector3(bc.bounds.center.x + -bc.bounds.extents.x, bc.bounds.center.y + bc.bounds.extents.y, 0));
5.         RayCaster(new Vector3(bc.bounds.center.x + bc.bounds.extents.x, bc.bounds.center.y + -bc.bounds.extents.y, 0));
6.         RayCaster(new Vector3(bc.bounds.center.x + -bc.bounds.extents.x, bc.bounds.center.y + -bc.bounds.extents.y, 0));
7.     }
8.  
9.     private void RayCaster(Vector3 v)
10.     {
11.  
12.         Vector3 direction1 = new Vector3 (localPos.x - v.x,
13.                                     localPos.y - v.y,
14.                                     localPos.z - v.z);
15.         Vector3 direction2 = new Vector3(localPos.x - v.x + 0.001f,
16.                                     localPos.y - v.y + 0.001f,
17.                                     localPos.z - v.z);
18.         Vector3 direction3 = new Vector3(localPos.x - v.x - 0.001f,
19.                                     localPos.y - v.y - 0.001f,
20.                                     localPos.z - v.z);
21.         //White Line on picture to all corners.
22.         Debug.DrawRay(localPos, -direction1, Color.white);
23.  
24.         RaycastHit2D ray1 = Physics2D.Raycast(localPos, -direction1, 4f, 1 << LayerMask.NameToLayer("Wall"));
25.  
26.         //Work only with lines in field of view.
27.         if (PointToAngle(ray1.point, transform.up) < (maxVisibleAngle / 2) ||
28.             PointToAngle(ray1.point, transform.up) > (-(maxVisibleAngle / 2) + 360))
29.         {
30.             //This check for cornes that are in visible range and not behind other walls.
31.             if (ray1.point != Vector2.zero &
32.                 Vector3.Distance(localPos, ray1.point) + 0.01f > Vector3.Distance(localPos, v)) // This must disable red line.
33.             {
34.                 //Red Line on picture to all visible corners.
35.                 Debug.DrawLine(localPos, ray1.point, Color.red);
36.                 vertices.Add(v);
37.              
38.                 RaycastHit2D ray2 = Physics2D.Raycast(localPos, -direction2, 4f, 1 << LayerMask.NameToLayer("Wall"));
39.                 RaycastHit2D ray3 = Physics2D.Raycast(localPos, -direction3, 4f, 1 << LayerMask.NameToLayer("Wall"));
40.  
41.                 if (ray2.point != Vector2.zero &
42.                 Vector3.Distance(localPos, ray2.point) - 0.01f > Vector3.Distance(localPos, v))
43.                 {
44.                     //Debug.DrawLine(localPos, ray2.point, Color.yellow);
45.                     vertices.Add(ray2.point);
46.                 }
47.  
48.                 if (ray3.point != Vector2.zero &
49.                     Vector3.Distance(localPos, ray3.point) - 0.01f > Vector3.Distance(localPos, v))
50.                 {
51.                     //Debug.DrawLine(localPos, ray3.point, Color.yellow);
52.                     vertices.Add(ray3.point);
53.                 }
54.             }
55.         }  
56.     }

It always happens in outside corners, then it look like it physically missed a corner, and aiming tighten around but because i disable all Rays like this, it just miss.

I hope its understandable and i did not forget something ...and sorry for mistakes in english.

EDIT:
Here is next part of code that i forgot:

Code (CSharp):

1. private float PointToAngle(Vector3 point, Vector3 direction)
2. {
3.         float angle = Quaternion.FromToRotation(direction, point - localPos).eulerAngles.z;
4.         return angle;
5. }

 

Ok so i find out whats wrong... I did not realize that my wall texture have only 4px width and same size have sprite in game, so its maybe too small for physics. When i rework all textures and expand all 10x then it stop happening. Im glad that i still using just 4 really simple textures

Only one think stay unsolved. PointToAngle conversion dont work perfectly because when direction is behind player and point is in front (180° angle) result is wrong. All other angles work good. I try to use other calculations but dont know how to make it work. I need calculate full 360° angles and always from face of player rotation.