Physics 物理学

# Physics 物理学

Global physics properties and helper methods.

全局物理属性和辅助方法。

### Class Variables**类变量**

* [gravity](Physics.gravity.html)
  The gravity applied to all rigid bodies in the
  scene.
  场景中应用到所有刚性物体的重力。
* [minPenetrationForPenalty](Physics.minPenetrationForPenalty.html)
  The minimum contact penetration value in order to apply a
  penalty force (default 0.05). Must be
  positive.
  两个物体接触碰撞时，物体间最小渗透(穿透)深度值。默认 0.05.取值范围从 0 到无穷大。必须是正数。
* [bounceThreshold](Physics.bounceThreshold.html)
  Two colliding objects with a relative velocity below this
  will not bounce (default 2). Must be
  positive.
  两个碰撞物体的相对速度如果在这个设定值之下，不会反弹。默认值 2.。取值范围 0 到无穷大。必须为正数。
* [sleepVelocity](Physics.sleepVelocity.html)
  The default linear velocity, below which objects start
  going to sleep (default 0.15). Must be
  positive.
  如果物体的线速度在这个速度设定值之下，物体将进入静止状态。默认 0.15。取值范围 0 到无穷大。必须为正数。
* [sleepAngularVelocity](Physics.sleepAngularVelocity.html)
  The default angular velocity, below which objects start
  sleeping (default 0.14). Must be
  positive.
  如果物体的角速度在这个速度设定值之下，物体将进入静止状态。默认 0.14。 取值范围 0 到无穷大。必须为正数。
* [maxAngularVelocity](Physics.maxAngularVelocity.html)
  The default maximimum angular velocity permitted for any
  rigid bodies (default 7). Must be positive.
  物体的最大角速度值。默认是 7。必须为正数。
* [solverIterationCount](Physics.solverIterationCount.html)
  The default solver iteration count permitted for any rigid
  bodies (default 7). Must be positive.
  默认的求解迭代次数允许使用任意刚体（默认为 7）。必须为正数。

### Class Functions**类函数**

* [Raycast](Physics.Raycast.html)
  Casts a ray against all colliders in the
  scene.
  在场景中投下可与所有碰撞器碰撞的一条光线。
* [RaycastAll](Physics.RaycastAll.html)
  Casts a ray through the scene and returns all
  hits.
  投射一条光线并返回所有碰撞。
* [Linecast](Physics.Linecast.html)
  Returns true if there is any collider intersecting the line
  between start and end.
  从开始位置到结束位置做一个光线投射，如果与碰撞体交互，返回真。
* [OverlapSphere](Physics.OverlapSphere.html)
  Returns an array with all colliders touching or inside the
  sphere.
  返回球型半径之内（包括半径）的所有碰撞体 [collider](../Collider/Collider.html)[]。
* [CapsuleCast](Physics.CapsuleCast.html)
  Casts a capsule against all colliders in the scene and
  returns detailed information on what was
  hit.
  对场景中的碰撞体进行胶囊的投射，如果相交，返回碰撞体的 raycasthit 信息。
* [SphereCast](Physics.SphereCast.html)
  Casts a sphere against all colliders in the scene and
  returns detailed information on what was
  hit.
  投射球型物体来判断是否与场景中物体交互，返回 Raycasthit 信息。
* [CapsuleCastAll](Physics.CapsuleCastAll.html)
  Like Physics.CapsuleCast, but this function will return all
  hits the capsule sweep intersects.
  和 [Physics.CapsuleCast](Physics.CapsuleCast.html) 不同的是这个函数返回所有交互的碰撞体信息。
* [SphereCastAll](Physics.SphereCastAll.html)
  Like Physics.SphereCast, but this function will return all
  hits the sphere sweep intersects.
  和 [Physics.SphereCast](Physics.SphereCast.html) 不同的是这个函数返回所有交互的碰撞体信息。
* [CheckSphere](Physics.CheckSphere.html)
  Returns true if there are any colliders touching the sphere
  defined by position and radius in world
  coordinates
  如果定义的球体和物体发生碰撞，返回真。球体定义在世界坐标系下。
* [CheckCapsule](Physics.CheckCapsule.html)
  Returns true if there are any colliders touching the
  capsule defined by the axis going from start and end and having radius in world
  coordinates
  如果定义的胶囊和任意碰撞器发生碰撞，返回真。精灵定义在世界坐标系下。
* [IgnoreCollision](Physics.IgnoreCollision.html)
  Makes the collision detection system ignore all collisions
  between collider1 and collider2.
  使碰撞体 1 和碰撞体 2 的碰撞侦测无效。
* [IgnoreLayerCollision](Physics.IgnoreLayerCollision.html)
  Makes the collision detection system ignore all collisions
  between any collider in layer1 and any collider in
  layer2.
  使碰撞侦测忽略层 1 和层 2 之间的所有碰撞器。
* [GetIgnoreLayerCollision](Physics.GetIgnoreLayerCollision.html)
  Are collisions between layer1 and layer2 being
  ignored?
  是否层 1 和层 2 之间的碰撞检测被忽略？