| origin | 2D座標におけるその図形の原点 |
| radius | The radius of the shape. |
| direction | 図形の角度を表すベクトル |
| results | Array to receive results. |
| distance | 図形を投げかける最大距離 |
| layerMask | 特定のレイヤーのコライダのみを判別するためのフィルター |
| minDepth | この値よりも大きなZ座標（深度）にあるオブジェクトのみを含みます。 |
| maxDepth | この値よりも小さなZ座標（深度）にあるオブジェクトのみを含みます。 |
int The number of results returned.
Casts a circle into the scene, returning colliders that contact with it into the provided results array.
This function is similar to the CircleCastAll function except that the results are returned in the supplied array. The integer return value is the number of objects that intersect the circle (possibly zero) but the results array will not be resized if it doesn't contain enough elements to report all the results. The significance of this is that no memory is allocated for the results and so garbage collection performance is improved when performed frequently. 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 クラス, RaycastHit2D クラス, CircleCast, CircleCastAll,, DefaultRaycastLayers, IgnoreRaycastLayer, raycastsHitTriggers.