How to Raycast in 3-4 desired directions in 2D ??

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1

I am making Bubble Blast kind of game in 2D in which i want to check the bubbles above the any bubble.
Ray cast will do the thing but i don’t know how to use it in Directions “NE” and “NW”. Can anyone help me to solve this problem?

2

N:
Physics2D.Raycast(bubblePosition, new Vector2(0,1));

NE:
Physics2D.Raycast(bubblePosition, new Vector2(1,1));

E:
Physics2D.Raycast(bubblePosition, new Vector2(1,0));

SE:
Physics2D.Raycast(bubblePosition, new Vector2(1,-1));

S:
Physics2D.Raycast(bubblePosition, new Vector2(0,-1));

SW:
Physics2D.Raycast(bubblePosition, new Vector2(-1,-1));

W:
Physics2D.Raycast(bubblePosition, new Vector2(-1,0));

NW:
Physics2D.Raycast(bubblePosition, new Vector2(-1,1));