2D 边界碰撞体 (Edge Collider 2D)

The Edge Collider 2D component is a Collider that interacts with the 2D physics system. The Collider’s shape is a freeform edge made of line segments that you can adjust to fit the shape of a Sprite or any other shape. The Collider’s start and end points do not need to meet or completely enclose an area to function (unlike the Polygon Collider 2D), and can form a straight line or other single edge shape.

属性	功能
Edit Collider	Select Edit Collider to make the collider outline editable. See Editing in Edit Collider mode for the actions and shortcuts available when Edit Collider is enabled.
Material	Select the Physics Material 2D that determines properties of collisions, such as friction and bounce.
Is Trigger	Enable this if you want this Collider 2D to behave as a trigger. The physics system ignores this Collider when this is enabled.
Used by Effector	Enable this if you want the Collider 2D to be used by an attached Effector 2D.
Offset	Set the local offset values of the Collider 2D geometry.
Edge Radius	设置一个值，以形成围绕碰撞体边界的半径。这会产生一个具有圆凸角的更大 2D 碰撞体。默认值为 0（没有半径）。
Points	Expand to view read-only information about the complexity of the generated Collider.
Use Adjacent Start Point	Enable this property to calculate the collision response using the Adjacent Start Point to form the collision normal when a collision occurs at the Edge Collider’s start point.
	Adjacent Start Point X/Y	Set the x and y-coordinates of the Adjacent Start Point.
Use Adjacent End Point	Enable this property to calculate the collision response using the Adjacent End Point to form the collision normal when a collision occurs at the Edge Collider’s end point.
	Adjacent End Point X/Y	Set the x and y-coordinates of the Adjacent End Point.
Layer Overrides	Expand for the Layer override settings.
	Layer Override Priority	Assign the decision priority that this Collider2D uses when resolving conflicting decisions on whether a contact between itself and another Collision2D should happen or not. Refer to its API page for more information.
	Include Layers	Select the additional Layers that this Collider 2D should include when deciding if a contact with another Collider2D should happen or not. Refer to its API documentation for more information.
	Exclude Layers	Select the additional Layers that this Collider 2D should exclude when deciding if a contact with another Collider2D should happen or not. Refer to its API documentation for more information.
	Force Send Layers	Select the Layers that this Collider 2D is allowed to send forces to during a Collision contact with another Collider2D. Refer to its API documentation for more information.
	Force Receive Layers	Select the Layers that this Collider 2D can receive forces from during a Collision contact with another Collider2D. Refer to its API documentation for more information.
	Contract Capture Layers	Select the Layers of other Collider 2D, involved in contacts with this Collider2D, that will be captured. Refer to its API documentation for more information.
	Callback Layers	Select the Layers that this Collider 2D, during a contact with another Collider2D, will report collision or trigger callbacks for. Refer to its API documentation for more information.

Editing in Edit Collider mode

The actions and shortcuts available when Edit Collider is enabled.