Physics2D.CircleCast
2D球形物理碰撞检测：这里返回一组碰撞信息
Declaration
public static RaycastHit2D CircleCast(Vector2 origin, float radius, Vector2 direction, float distance = Mathf.Infinity, int layerMask = DefaultRaycastLayers, float minDepth = -Mathf.Infinity, float maxDepth = Mathf.Infinity);
Parameters
- origin The point in 2D space where the circle originates.
- radius The radius of the circle.
- direction A vector representing the direction of the circle.
- distance The maximum distance over which to cast the circle.
l- ayerMask Filter to detect Colliders only on certain layers. - minDepth Only include objects with a Z coordinate (depth) greater than or equal to this value.
- maxDepth Only include objects with a Z coordinate (depth) less than or equal to this value.
Returns
RaycastHit2D The cast results returned.
Description
Casts a circle against Colliders in the Scene, returning the first Collider to contact with it.
A CircleCast is conceptually like dragging a circle through the Scene in a particular direction. Any object making contact with the circle can be detected and reported.
This function returns a RaycastHit2D object with a reference to the Collider that is hit by the box (the Collider property of the result will be NULL if nothing was hit). The layerMask can be used to detect objects selectively only on certain layers (this allows you to apply the detection only to enemy characters, for example).
The returned RaycastHit2D returns both the point and normal of the contact where the circle would touch the Collider. It also returns the centroid where the circle would be positioned for it to contact at that point.
See Also: LayerMask class, RaycastHit2D class, :CircleCastAll, CircleCastNonAlloc, DefaultRaycastLayers, IgnoreRaycastLayer, raycastsHitTriggers.
在场景中对对撞机投下一个圆圈，返回第一个对撞机与其接触。
A 循环卡斯特在概念上就像在特定的方向上拖着一个圆圈穿过场景。任何与圆圈接触的物体都可以被检测和报告。
此函数返回RayCastHit2D对象，并引用框击中的对撞机(如果没有命中，则结果的Collider属性为空)。这个分层面具可以仅在某些层上选择性地检测对象(例如，这允许您仅将检测应用于敌人字符)。
返回RayCastHit2D返回接触点和正常点，圆圈将在其中接触对撞机。它还返回圆心，在那里圆将被定位，以便它在这一点上接触。
Declaration
public static int CircleCast(Vector2 origin, float radius, Vector2 direction, ContactFilter2D contactFilter, RaycastHit2D[] results, float distance = Mathf.Infinity);
Parameters
origin The point in 2D space where the circle originates.
radius The radius of the circle.
direction A vector representing the direction of the circle.
contactFilter The contact filter used to filter the results differently, such as by layer mask, Z depth, or normal angle.
results The array to receive results. The size of the array determines the maximum number of results that can be returned.
distance The maximum distance over which to cast the circle.
Returns
int Returns the number of results placed in the results array.
Description
Casts a circle against Colliders in the Scene, returning all Colliders that contact with it.
A CircleCast is conceptually like dragging a circle through the Scene in a particular direction. Any Collider making contact with the circle can be detected and reported.
This function returns the number of contacts found and places those contacts in the results array. The results can also be filtered by the contactFilter.
See Also: ContactFilter2D and RaycastHit2D.
Declaration
public static int CircleCast(Vector2 origin, float radius, Vector2 direction, ContactFilter2D contactFilter, List results, float distance = Mathf.Infinity);
Parameters
origin The point in 2D space where the circle originates.
radius The radius of the circle.
direction A vector representing the direction of the circle.
contactFilter The contact filter used to filter the results differently, such as by layer mask, Z depth, or normal angle.
results The list to receive results.
distance The maximum distance over which to cast the circle.
Returns
int Returns the number of results placed in the results list.
Description
Casts a circle against Colliders in the Scene, returning all Colliders that contact with it.
A CircleCast is conceptually like dragging a circle through the Scene in a particular direction. Any Collider making contact with the circle can be detected and reported.
The integer return value is the number of results written into the results list. The results list will be resized if it doesn’t contain enough elements to report all the results. This prevents memory from being allocated for results when the results list does not need to be resized, and improves garbage collection performance when the query is performed frequently.
The results can also be filtered by the contactFilter.
See Also: ContactFilter2D and RaycastHit2D.