Use PolygonCollider2D for flat surfaces

Hi,

I got an flat surface described by a list of points. I want to give that surface a collider.

Adding a PolygonCollider2D with these points causes the collider to be rotated 90 degrees.

I am also not able to rotate the collider through rotating the game object, because the collider just gets smaller but does not rotate.


Is there a way to use polygon collider for my case?

Kind regards

 

Unfortunately 2D colliders can only stretch in the X and Y directions and does not have Z coordinates. As you've already seen, this means you cannot rotate a 2D collider so that it's points move on the Z axis.

If you're making a 2D game and want to use 2D colliders, you will need to design the game to be viewed forward down the Z axis, and not from above down the Y axis.

If you're making a 3D game, you need to use 3D colliders. 2D and 3D colliders do not interact, and will not trigger/move each other. You cannot make 3D physics involving 2D colliders.